Machine Learning Infrastructure Engineer At Optasia Athens Greece jobs in Athens – Browse 1,950 openings on RoboApply Jobs

Machine Learning Infrastructure Engineer At Optasia Athens Greece jobs in Athens

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companyOptasia logo
Full-time|On-site|Athens, Attica, Greece

Optasia builds B2B2X financial technology for scoring, decision-making, disbursement, and collections, with a focus on expanding financial inclusion worldwide. The company’s growth relies on data-driven strategies, and the Machine Learning Engineering team is at the center of this effort. The Machine Learning Infrastructure Engineer role supports automated decision-making and risk management. This position involves working with large data sets, integrating information from multiple sources, and managing analytical pipelines built on a modern big data technology stack. What you will do Build and maintain resilient machine learning pipelines that support business-critical decisions Design and develop statistical and machine learning algorithms for credit risk management Deploy and operationalize ML solutions to improve automated risk assessment and decision processes What we are looking for Strong experience with end-to-end machine learning workflows Background in developing and deploying advanced algorithms Motivation, energy, and a results-oriented approach Ability to thrive in a collaborative team environment This position is based in Athens, Greece, and offers the chance to make a direct impact on Optasia’s data-driven initiatives.

Apr 29, 2026
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companyOptasia logo
Full-time|On-site|Athens, Attica, Greece

We are looking for a motivated and skilled IT Support Engineer to join our dynamic team at Optasia, a leading player in the fintech industry. In this role, you will be responsible for providing exceptional technical support, troubleshooting issues, and ensuring the smooth operation of our IT systems. Your expertise will help us maintain high service levels and deliver outstanding solutions to our clients.If you are passionate about technology and customer service, and thrive in a fast-paced environment, we want to hear from you!

Mar 17, 2026
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companyOptasia logo
Full-time|Hybrid|Athens, Attica, Greece

Join Optasia, a pioneering B2B2X financial technology platform that is revolutionizing financial inclusion through advanced scoring, decision-making, disbursement, and collection solutions. We are dedicated to changing the world of finance for the better.At Optasia, we thrive on innovation, and we are looking for passionate individuals who are results-oriented and eager to collaborate in a dynamic team environment. Data is the backbone of our growth strategy, and the Data Engineering team plays a crucial role in driving data-driven automated decision-making processes.We invite you to become a part of our expanding Data Engineering team as a Junior Data Engineer. In this role, you will have the opportunity to design and implement robust batch and streaming data pipelines, significantly contributing to our mission.Your ResponsibilitiesCollaborate with Data Architects, Machine Learning Engineers, and Data Analysts to design, deliver, and support the company's ETL and ML pipelines.Develop and maintain essential libraries for batch processing and large-scale data ingestion.Create and implement new processes to facilitate real-time data streaming from various sources.Enhance the efficiency and accuracy of data injection into our big data infrastructure.Explore and apply innovative data engineering patterns and technologies.Your QualificationsBachelor's or Master's degree in Computer Science, Informatics, or a related field.Understanding of data modeling, mining, and warehousing methodologies.Proficiency in at least one programming language, preferably Java, Scala, or Python.Solid SQL skills.Strong analytical abilities with meticulous attention to detail.A genuine enthusiasm for learning new technologies and working collaboratively with creative professionals.Preferred QualificationsPractical experience with Big Data technologies (e.g., Apache Spark, YARN, HDFS, MapReduce).Experience with NoSQL databases.Familiarity with mathematical modeling, algorithm development, and machine learning.Why Optasia?What we offer: Flexible hybrid working environment Competitive salary package Additional day off on your birthday Performance-based bonuses‍ Comprehensive private health insurance All necessary tech gear to work efficientlyJoin our multicultural team at Optasia and be part of a unique and rewarding workplace!

Mar 23, 2026
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companyOptasia logo
Full-time|On-site|Athens, Attica, Greece

Optasia is an innovative B2B2X financial technology platform dedicated to enhancing scoring, financial decision-making, disbursement, and collection processes. We are passionate about fostering financial inclusion and transforming the world through our unique approach.We are seeking a dynamic and driven Program Manager (Revenue) to join our team and collaborate closely with the Chief Revenue Officer (CRO) to implement strategic initiatives that span the CRO organization.This role serves as an integral extension of the CRO, facilitating the definition, coordination, and execution of essential programs and projects across various regions and functions. You will be responsible for translating revenue and growth priorities into actionable initiatives, ensuring disciplined execution, and fostering alignment among stakeholders.Unlike traditional sales operations or performance management roles, this position emphasizes strategic execution and program leadership, empowering the CRO to advance priorities swiftly and transparently.This opportunity is tailored for an exceptionally organized, structured, and execution-focused professional who thrives in a fast-paced fintech environment and enjoys engaging with senior leadership.

Feb 9, 2026
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companyOptasia logo
Full-time|On-site|Athens, Attica, Greece

At Optasia, we are at the forefront of reshaping the financial technology landscape. Our innovative B2B2X platform provides comprehensive solutions for scoring, financial decision-making, disbursement, and collection, all aimed at promoting financial inclusion. Join us in changing the world.With over a decade of experience, we have emerged as a global leader in the Fintech sector, continuously evolving our offerings and exploring new monetization pathways for our partners and clients.As a vital member of the Systems Engineering team, your key mission will be to ensure the reliability and excellence of our backup and recovery operations. You will implement, optimize, and sustain the organization’s backup, retention, and disaster recovery strategies across all platforms.Your ResponsibilitiesOversee, monitor, and streamline backup and restore operations across diverse platforms.Support and enhance Veeam, Barman, and NiFi backup environments to ensure data integrity and readiness for recovery.Engage in disaster recovery planning, testing, and execution utilizing VMware vRealize Automation and related VMware tools.Address incidents, conduct root cause analyses, and guarantee prompt resolution of backup or recovery challenges.Manage and refresh backup configurations, retention policies, and recovery procedures.Document operational processes, test outcomes, and technical setups.Collaborate with the Team Leader to enhance performance, scalability, and robustness of backup and disaster recovery systems.Ensure adherence to compliance, audit, and data protection standards.Contribute to capacity planning, automation, and initiatives aimed at service improvement.Your Qualifications3-5 years of experience in IT infrastructure with a focus on backup and disaster recovery operations.In-depth technical knowledge of Veeam, Barman, and NiFi.Practical experience with VMware disaster recovery environments (VRA, SRM, or similar).Strong grasp of RPO/RTO concepts, backup architecture, and data retention strategies.Experience in incident management, troubleshooting, and performance optimization.Familiarity with regulatory and compliance frameworks (ISO 27001, GDPR, or equivalent).Exceptional attention to detail, documentation skills, and a collaborative spirit.Why Optasia?We offer a comprehensive remuneration package that includes: Competitive salary An extra day off on your birthday Performance-related bonuses All the technology you need to work efficientlyJoin a diverse and multicultural team, and engage with a unique and promising industry while gaining insights into the future market landscape.

Nov 14, 2025
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companyOptasia logo
Full-time|On-site|Athens, Attica, Greece

At Optasia, we are pioneering a comprehensive B2B2X financial technology platform that encompasses scoring, financial decision-making, disbursement, and collection processes. Our mission is to promote financial inclusion on a global scale. Join us as we revolutionize the financial landscape.With over a decade of experience since our founding, we have established ourselves as a frontrunner in the Fintech industry, continuously innovating and expanding our suite of solutions to provide unparalleled monetization opportunities for our partners and clients.As a vital member of the Data Assurance team at Optasia, you will collaborate closely with the Data Architect to conduct automated sanity checks and validate vast amounts of pre-processed and post-processed data. You will also test various algorithms employed in our Credit Risk Assessment processes for nano and micro-financing. Working alongside a team of creative professionals, you will have the chance to showcase your expertise in data assurance, statistical models, and machine learning, while enhancing your analytical and innovative capabilities. This role offers a unique opportunity to deepen your knowledge in data assurance, artificial intelligence, machine learning, and predictive risk analytics.Your Responsibilities:Automate data assurance and validation processes.Conduct sanity checks on extensive datasets, both pre-processed and post-processed.Research, analyze, and document data discrepancies reported by clients, determining appropriate resolution strategies using independent judgment.Implement data pre-processing techniques.Automate testing procedures for Risk Models and algorithms utilized in Credit Risk Assessment.Document and monitor production issues, processes, procedures, and changes related to data amendments.

Feb 24, 2026
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companyOptasia logo
Full-time|On-site|Athens, Attica, Greece

Optasia is an innovative B2B2X financial technology platform dedicated to enhancing scoring, financial decision-making, disbursement, and collection processes. Our mission is to foster financial inclusion for everyone. Join us in transforming the financial landscape!We are on the lookout for passionate and driven professionals who thrive in a collaborative environment. As a member of our dynamic team, you will contribute to delivering innovative solutions that make a difference.Data plays a pivotal role in Optasia's growth strategy, with our ML Engineering team being a key contributor. We harness data from various sources into our extensive big data clusters and develop and manage multiple analytical pipelines using state-of-the-art big data technologies.As a Senior ML Infrastructure Engineer, you will play a crucial role in enhancing Optasia's data-driven decision-making and credit risk management by developing and optimizing scalable, end-to-end ML pipelines. Your key responsibilities will include: (i) building robust ML pipelines, (ii) designing statistical and machine learning algorithms, and (iii) operationalizing these solutions to bolster credit risk management, directly impacting Optasia's success.Your Responsibilities:Provide technical guidance in ML engineering to ensure the adoption of optimal tools and methodologies, staying ahead of emerging trends and delivering industry-leading solutions.Enhance the scalability, stability, accuracy, speed, and efficiency of ML workflows while maintaining stringent testing and code quality standards.Contribute to the design and development of microservices and tools that facilitate the Machine Learning lifecycle at Optasia.Collaborate on the design and implementation of scalable, real-time microservices utilized globally.Foster continuous improvements in the development lifecycle with the team.Design, develop, and maintain large-scale Spark jobs using PySpark and Scala.Build and manage CI/CD pipelines with Jenkins.Create automation scripts using Python or Bash.Develop and deploy scalable Airflow pipelines to support the Machine Learning lifecycle.Conduct data exploration and analysis to scope, build, and refine Machine Learning proof-of-concepts (PoCs).Partner with Engineers and the Credit Risk team to design and implement solutions that deliver business value at Optasia.Optimize the codebase through Spark job tuning and refactoring.Drive enhancements to our feature engineering engine for improved efficiency.

Sep 1, 2025
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companyKaizen Gaming logo
Full-time|On-site|Athens, Greece

Join Our Team at Kaizen GamingKaizen Gaming, the driving force behind Betano, ranks among the world's leading GameTech companies, operating across 20 markets. We are dedicated to leveraging advanced technology to deliver unparalleled experiences to our millions of customers who rely on us for their entertainment.Our diverse workforce comprises over 2,700 Kaizeners from more than 40 nationalities across three continents.We take pride in being recognized as one of the Best Workplaces in Europe and hold a Great Place to Work certification across our offices. Here, no two days are the same. Are you ready to Press Play on Your Potential?About the RoleAt Kaizen, our mission is to harness the capabilities of modern AI algorithms to enhance our products and business. The AI department, which includes product, platform, and research teams, is at the heart of this initiative. We craft AI solutions for a variety of applications, including fraud detection, personalized gaming recommendations, AI-powered co-pilots, and CRM enhancements.Our teams are structured to be self-driven, autonomous, and cross-functional. In this role, you will collaborate with Data Scientists, Machine Learning Engineers, Data Engineers, Data Analysts, Product Owners, and Agile Delivery Leads.As a Senior Machine Learning Software Engineer, your focus will be on delivering robust and scalable Machine Learning pipelines while supporting the operationalization of Machine Learning models.Key Responsibilities:Work closely with data scientists to create production-ready model training pipelines.Design scalable solutions in a distributed environment.Architect scalable inference pipelines.Implement model diagnostics, including evaluation and monitoring flows.Automate model deployments and enable REST API model endpoints.Develop scalable model serving flows.Optimize clusters for performance and scalability.Develop and maintain internal tools and libraries.Create CI/CD/CT pipelines.

Feb 20, 2026
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companyOptasia logo
Full-time|On-site|Athens, Attica, Greece

Optasia is a dynamic B2B2X financial technology platform that specializes in scoring, financial decision-making, disbursement, and collection. Our mission is to foster financial inclusion globally, as we are transforming the financial landscape.We are looking for passionate and energetic professionals who are results-oriented and possess a proactive mindset. Join our innovative team of like-minded individuals dedicated to delivering cutting-edge solutions in an exciting environment. At Optasia, data is central to our growth strategy, and our Data Engineering team plays a vital role in our success through data-driven insights and decision-making.As an ML & Data Ops Engineer at Optasia, you will be pivotal in ensuring the availability and performance of our workflows. You will monitor and optimize our existing data system infrastructure, prioritize issue resolution, and promote a culture of continuous improvement. Your contributions will be essential in maintaining high service standards and reinforcing our commitment to client success.Key Responsibilities:Oversee daily monitoring of ML workflows, service alerts, and all data system infrastructure, including storage, applications, databases, and resources.Act as an escalation point for critical ML and data incidents, diagnosing issues and resolving or escalating as needed.Champion continuous integration, continuous delivery, and automation practices to facilitate seamless software transitions from development to production.Manage customer inquiries efficiently to ensure prompt responses and resolutions within defined SLAs.Encourage a culture of continuous improvement by identifying enhancements in processes, tools, and technologies.Conduct health and quality checks of ML and data workflows to ensure operational excellence.Collaborate with cross-functional teams including ML/Data Engineering, Algorithmic Trading, and System & Network Administration to resolve internal and client-related issues effectively.Develop training materials and deliver sessions, maintaining comprehensive technical documentation.

Mar 23, 2026
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companyKiefer Tech logo
Full-time|On-site|Athens

Join Kiefer Tech, a pioneering technology firm in the Green Energy sector with over 12 years of engineering excellence. We specialize in developing advanced AI, robotics, and enterprise solutions, ensuring data sovereignty within the EU. Our commitment to privacy and impactful business results drives our mission to create cutting-edge AI infrastructure, including the first true Greek Large Language Models and intelligent automation solutions. Collaborating with NVIDIA, we aim to enhance Greece’s technological sovereignty and innovation landscape. Be part of our journey to shape the AI-powered future.Your Role:As a Senior Machine Learning Engineer, you will be instrumental in designing, optimizing, and scaling our AI systems that power the Sophea and Kiefer multi-product platform. This position requires a blend of hands-on ML engineering expertise and collaborative systems thinking. You will focus on production-grade ASR pipelines, enhancing Greek-language LLM performance, and developing cost-effective inference solutions while establishing technical benchmarks and elevating our ML practices organization-wide.Your contributions will significantly enhance product performance, customer satisfaction, and our capacity to deploy AI solutions across various public and enterprise sectors in Greece and beyond.Key Responsibilities:Develop and scale production-grade ASR and LLM pipelines, optimizing throughput, latency, and reliability while ensuring compliance with data sovereignty requirements.Enhance model performance through dataset-centric optimizations, broadening Greek-language capabilities and domain-specific expertise.Architect and implement scalable multi-agent AI systems to automate complex enterprise document analyses and decision-making processes.Lead cost and performance optimization efforts for model inference, utilizing techniques like quantization, caching, and intelligent routing to lower costs.Establish and maintain ML engineering standards, including evaluation frameworks, CI/CD practices, testing protocols, and mentorship initiatives within the ML team.

Jan 22, 2026
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companyOptasia logo
Full-time|On-site|Athens, Attica, Greece

Optasia is an innovative B2B2X financial technology platform that specializes in scoring, financial decision-making, disbursement, and collections. Our mission is to facilitate financial inclusion for everyone. We are transforming the world in our unique way.We are in search of a dynamic and results-oriented Internal Audit Specialist who possesses a proactive mindset and excels in a fast-paced, agile, and empowering environment. Join our expanding team of passionate professionals dedicated to delivering solutions in an exciting and innovative landscape. This position is perfect for individuals with Senior Associate or Manager-level expertise, particularly those with fintech experience.As part of our Risk, Compliance, and Assurance function, the successful candidate will report to the Head of Internal Audit. You will be instrumental in assessing and enhancing the effectiveness of our internal controls, risk management practices, and overall governance processes, ensuring we maintain compliance while scaling operations.The ideal candidate will showcase strong analytical abilities and communication skills, adept at converting audit findings into actionable insights that drive business value. Collaboration with cross-functional teams across finance, operations, commercial, product, risk, and compliance will be key to ensuring secure scaling while upholding robust control frameworks and operational discipline.Key Responsibilities:Lead comprehensive risk-based internal audits from scoping to reporting and follow-up.Develop an in-depth understanding of Optasia’s business model and evaluate key risks in Finance, Operations, Commercial, Product, Risk, Compliance, and third-party engagements.Assess the design and operational efficiency of internal controls, identify root causes, and propose actionable enhancements to support growth and compliance.Prepare detailed reports and communicate audit findings, offering clear, actionable recommendations to management.Collaborate with stakeholders to facilitate remediation and ensure measurable improvements in controls.Contribute to the ongoing development of the annual internal audit plan, methodology, and monitoring activities.Foster a culture of accountability and strong internal controls.Act as a trusted advisor—balancing risk and operational needs.

Apr 8, 2026
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companyOptasia logo
Full-time|On-site|Athens, Attica, Greece

Optasia is an innovative B2B2X financial technology platform dedicated to enhancing scoring, financial decision-making, disbursement, and collection processes. We are passionate about fostering financial inclusion globally and are on a mission to transform financial services.We are looking for energetic and enthusiastic professionals who are driven by results and possess a positive, can-do attitude. Join our team of like-minded individuals in an exciting and innovative environment. As a Software & Performance Engineer, you will play a crucial role in developing software solutions that address real-world challenges. You will be actively engaged in the full software development lifecycle, contributing to the design, coding, analysis, and documentation of application programs within the Spring Framework. Working closely with cross-functional teams, you will help evolve our products and implement modern technologies and methodologies for software development.

Feb 6, 2026
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company
Full-time|On-site|Athens, Attica, Greece

Role Overview Avis Greece is looking for a Seasonal Parking Agent in Athens. This role focuses on preparing vehicles for delivery and inspecting them when they return from rental. Main Responsibilities Prepare vehicles and check additional equipment such as GPS units and Wi-Fi devices before handing them over to customers. Inspect the condition of vehicles and any rented equipment when customers return them. Complete reservations by finalizing contracts in the system and recording any necessary damage compensation. Monitor and maintain the parking area to ensure it stays organized and safe. Provide helpful and attentive customer service throughout the process.

Apr 28, 2026
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companyOptasia logo
Full-time|On-site|Athens, Attica, Greece

At Optasia, we are pioneering a transformative B2B2X financial technology platform that encompasses scoring, financial decisioning, disbursement, and collection. Our mission is to promote financial inclusion for everyone. Join us as we revolutionize the industry.Since our establishment over ten years ago, we have emerged as a global frontrunner in the fintech sector, consistently enhancing our portfolio with innovative solutions and uncovering new monetization avenues for our partners and clients.As a vital part of the Systems Engineering team at Optasia, your key responsibility will be to guarantee the stability, security, and seamless operation of our Linux-based systems. This includes managing core platforms, supporting essential services, and ensuring optimal performance across both production and staging environments.Your ResponsibilitiesAdminister and maintain Linux systems (Red Hat and Debian) across production and staging environments.Execute regular patch management, system updates, and security enhancements.Oversee and monitor system performance utilizing Nagios, Grafana, and other relevant tools.Support and maintain applications such as Passbolt, DNS, FreeIPA, Radius, Jenkins, and Red Hat Satellite.Conduct incident management, troubleshooting, and root cause analysis to secure system reliability and uptime.Engage in operations and maintenance tasks as well as system improvement initiatives.Track and manage licenses, End of Support, and End of Life for Linux assets and software.Collaborate with cross-functional teams to bolster infrastructure and authentication services.Ensure precise documentation for configurations, changes, and operational procedures.Your Qualifications3-5 years of substantial experience as a Linux Systems Engineer or Administrator.Deep understanding of Red Hat Enterprise Linux and Debian administration.Proficient in FreeIPA, DNS, and Red Hat Satellite.Familiar with Nagios, Grafana, and Radius.Strong grasp of system patching, incident management, and operations & maintenance processes.Proficient in scripting or automation (Bash, Python, Ansible).Excellent documentation, communication, and collaboration abilities.Why You Should Join UsWe Offer: Competitive salary package Additional day off on your birthday Performance-related bonus scheme All the necessary tech to work efficientlyOptasia’s Benefits: Be part of a diverse and multicultural team Engage with a unique and promising business landscape Gain insights into the future of the marketOptasia’s Core Values #1 Drive to Thrive: Fully committed to continuous evolution. We embrace challenges and learning opportunities.

Nov 14, 2025
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companyKiefer Tech logo
Full-time|On-site|Athens

Kiefer Tech is the technology division of Kiefer, drawing on over 12 years of engineering experience in the Green Energy field. The team designs and delivers AI, robotics, and enterprise solutions for clients throughout Greece and the European Union. Project work includes building sovereign AI infrastructure with a focus on data privacy, deploying enterprise automation, and developing Greece’s first production-ready Large Language Models. Kiefer Tech emphasizes technical quality, innovation, and long-term relationships with clients. The company has a strategic partnership with NVIDIA, which brings together sustainable infrastructure and advanced AI systems. This collaboration aims to support Greece’s technological independence and deliver real-world benefits across multiple industries.

Apr 27, 2026
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company
Full-time|On-site|Athens, Attica, Greece

About Avis Greece Avis Greece is part of a global brand focused on reshaping how people move. The company develops integrated products and services that aim to make travel more flexible and convenient for customers worldwide. Why Work at Avis Greece? Supportive team culture: Colleagues work together to encourage new ideas and keep customer needs at the center of every decision. Purpose-driven work: Employees help shape the future of mobility, contributing to a more connected world. Rental Sales Agent – Athens Downtown The Athens Downtown team is looking for a Rental Sales Agent who will deliver excellent service, drive sales, and make the rental process smooth for every customer. Main Responsibilities Deliver friendly, reliable customer service for each car rental and build long-term relationships with clients. Promote relevant products and services to improve the customer experience. Monitor competitor offerings and market trends to help maintain competitive rates in line with company guidelines. Support daily station operations and suggest improvements for better results. Work with other departments to resolve customer issues and ensure high service standards. Location Athens, Attica, Greece

Apr 28, 2026
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company
Full-time|Hybrid|Athens, Attica, Greece

Work Model: Hybrid | Employment Type: Full-timeAt Accepted, we specialize in software and digital transformation services that empower clients to drive innovation across various sectors such as Finance, Energy, Gaming, Telco, and more. With over 20 years of engineering excellence, we pride ourselves on delivering outcome-focused solutions and cultivating high-performance teams that integrate seamlessly with your operations.We are on the lookout for an experienced Senior Machine Learning Engineer to enhance our hybrid delivery teams.Key ResponsibilitiesDesign, implement, and deploy machine learning solutions tailored for document-intensive environments, emphasizing automation and intelligent document processing;Develop and refine NLP and LLM-based applications for document comprehension, including classification, entity recognition, and semantic search;Construct and oversee comprehensive ML pipelines, covering data preprocessing, training, evaluation, deployment, and monitoring;Work on document ingestion and processing workflows involving PDFs, scanned documents, and unstructured data, facilitating metadata extraction and indexing;Implement and enhance RAG pipelines and LLM integrations for enterprise knowledge management systems;Collaborate closely with product, engineering, and business teams to convert document management and operational requirements into scalable ML solutions;Contribute to the design and ongoing development of internal AI platforms and automation workflows;Ensure the performance, scalability, and reliability of ML systems within production environments;Support experimentation, model optimization, and the continuous enhancement of ML solutions.

Mar 17, 2026
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companyOptasia logo
Full-time|On-site|Athens, Attica, Greece

At Optasia, we are a pioneering B2B2X financial technology platform dedicated to scoring, financial decision-making, disbursement, and collection. Our mission is to foster financial inclusion for everyone. We are reshaping the world in our unique way.Over the past decade, we have evolved into a global leader in the Fintech arena, continuously expanding our portfolio with innovative solutions, offerings, and unexplored monetization opportunities for our partners and clients.As a vital member of our Systems Engineering team, you will oversee the efficient provisioning, installation, configuration, operation, and maintenance of our Microsoft-based systems infrastructure. This role involves engaging in technical research and development to support ongoing innovation in our enterprise environment.Your responsibilities will ensure that Windows Server platforms, Azure services, Active Directory, and endpoint management systems are aligned with our organizational values and security standards, empowering our staff, partners, and stakeholders to function effectively and securely.Key Responsibilities:Lead the design, implementation, and enhancement of Microsoft-based systems focusing on scalability, security, and performance.Take responsibility for Windows and Azure architecture decisions, contributing to long-term infrastructure strategy and planning.Design and manage enterprise Active Directory environments, including GPO governance and identity management.Administer and optimize Windows Server 2022 / 2025 environments.Manage and enhance Microsoft Intune for endpoint lifecycle management, compliance enforcement, and secure device provisioning.Architect and support Azure environments, including identity management, networking, backups, and disaster recovery solutions.Act as a subject matter expert during critical incidents: diagnose, troubleshoot, and resolve complex Microsoft-related production issues under pressure.Drive automation initiatives using PowerShell and Azure-native tools to streamline operations and enhance reliability.Establish and uphold system hardening, compliance standards, and Microsoft security best practices (CIS, NIST, etc.).Administer and support collaboration platforms such as Jira, Confluence, and Bitbucket, ensuring integration with infrastructure workflows.Mentor and guide junior and mid-level engineers, promoting knowledge sharing and skill development.Collaborate with cross-functional teams to align infrastructure capabilities with business objectives.Evaluate and integrate new Microsoft technologies to improve system resilience and performance.

Mar 9, 2026
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companyOptasia logo
Full-time|On-site|Athens, Attica, Greece

Optasia is an innovative B2B2X financial technology platform dedicated to transforming financial decision-making, scoring, disbursement, and collection processes. Our mission is to promote financial inclusion for everyone, and we are making a significant impact in the world.We are looking for passionate individuals who are driven by results and possess a proactive mindset. Join our dynamic team of like-minded professionals who are committed to delivering cutting-edge solutions in an exciting and collaborative environment.As a Junior Quantitative Risk Data Scientist, you will play a vital role in enhancing Optasia's advanced risk management strategies and optimizing revenue as a key member of our Credit Portfolio Optimization team. This team specializes in credit scoring, model development, and managing large loan portfolios daily. Your responsibilities will include (i) creating statistical and machine learning algorithms for credit evaluation, (ii) optimizing revenues through effective risk management, (iii) conducting detailed risk analytics, and (iv) integrating models into day-to-day operations of extensive loan portfolios. You will collaborate within a robust team of 25 skilled professionals.Your ResponsibilitiesConduct comprehensive risk analyses and optimizations on microloans, comprising 80% of your role.Design predictive models, primarily focusing on statistical approaches with occasional machine learning applications.Provide actionable insights into credit risk utilizing advanced big data analytics.Assess and analyze credit risk factors through computational techniques on extensive datasets.Work closely with cross-functional teams to facilitate data-driven decision-making.Continuously enhance risk models to maximize financial outcomes while minimizing risks.Your QualificationsBachelor’s degree in Data Science, Statistics, Mathematics, or a related discipline.Strong background in statistical modeling; familiarity with machine learning is advantageous.Proficient in programming languages such as Python or R, with substantial experience in big data analytics.Thorough understanding of risk analytics and credit risk determinants.Adept at managing and analyzing large datasets to extract valuable insights.Excellent analytical and problem-solving abilities.Key AttributesExceptional interpersonal and communication skills.Capacity to meet tight deadlines while maintaining meticulous attention to detail.Strong judgment and problem-solving capabilities.Experience adhering to secure coding practices and guidelines (e.g., OWASP, NIST).Why Join Us? Experience the thrill of working in a forward-thinking company that is committed to driving change in the financial landscape.

Jan 21, 2026
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company
Full-time|On-site|Athens, Attica, Greece

Join Avis: Where Your Career Finds Purpose and We Redefine Mobility At Avis, we are revolutionizing the way people travel, spearheading transformation in the global mobility sector. Our mission is to innovate and deliver integrated products and services that create an array of new travel possibilities, defined by exceptional convenience and flexibility.Why Choose Avis: A Collaborative Work Environment: At Avis, we are more than just a business; we are a community that cherishes its employees. We take great pride in fostering a collaborative atmosphere, focused on innovation, and prioritizing customer satisfaction in every action we take. Your Career, Your Purpose: By joining us, you'll find that Avis is the place where your career can truly thrive. We are not merely offering jobs; we are inviting exceptional talent to contribute to our vision of a more connected world. Unlock Your Potential as a Rental Sales Agent with Avis Greece Avis Greece is searching for an outstanding Rental Sales Agent to join our team at the Athens Airport Station. This role is pivotal in delivering extraordinary customer service, driving sales, and ensuring an effortless rental experience for our clients. Your Key Responsibilities: Provide exemplary customer service for every car rental, building trust and fostering long-term client relationships. Promote additional products and services to elevate the overall customer experience. Remain knowledgeable about competitor offerings and market trends to ensure our deals are competitive and aligned with company policies. Contribute actively to the operations of the station, suggesting enhancements to improve performance. Monitor and address customer complaints in collaboration with relevant departments to guarantee outstanding service.

Mar 16, 2026

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