Junior Data Engineer at Optasia | Athens, 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!

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.

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.

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.

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.

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.

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.

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.

Join a pioneering leader in education technology, recognized globally for excellence in the assessment and certification of professional skills across more than 200 countries. PeopleCert is actively seeking a talented Data Engineer to enhance our dynamic Data & AI team. This position is crucial in architecting, developing, and sustaining the infrastructure and data solutions that empower our AI-driven projects. The ideal candidate will possess substantial practical experience with Microsoft Azure technologies and demonstrate a strong passion for data engineering practices that facilitate machine learning, advanced analytics, and large-scale data processing.In this role, you will collaborate closely with the AI Center of Excellence, working alongside data scientists, ML engineers, software developers, analysts, and business stakeholders to enable data accessibility and drive intelligent applications.Your responsibilities will include:Designing, implementing, and maintaining scalable data pipelines and workflows to facilitate AI/ML model training, evaluation, and inference.Building and optimizing data integration solutions utilizing Azure data tools such as Synapse Analytics, Azure Data Factory, Databricks, and Delta Lake.Partnering with data scientists and AI engineers to ensure data is available in the correct format and quality for modeling purposes.Developing and maintaining APIs and data services that power AI-driven applications and insights delivery.Supporting the development of data lakes and lakehouses tailored for advanced analytics and AI use cases.Writing efficient, reusable Python and SQL code for data processing, cleaning, and transformation.Participating in code reviews and knowledge-sharing sessions within the team to cultivate best practices and continuous learning.Keeping abreast of emerging tools, cloud services, and trends in data engineering and AI infrastructure.

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.

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.

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

Join Our TeamAt Orfium, we are at the forefront of transforming music rights and royalties through innovative technology and data solutions. As a Senior Data Engineer on our CORE team (Centralized Orfium Revenue Engine), you will play a pivotal role in establishing the data foundations for our essential billing and reporting systems. Your expertise will ensure accuracy, scalability, reliability, and cost efficiency, which are crucial for timely invoicing, revenue recognition, and maintaining healthy cash flow for our global clientele.Your responsibilities will include designing, building, and optimizing modern data workflows leveraging technologies such as Airflow, dbt, Snowflake, and AWS. You will enhance data quality, observability, performance, and cost-effectiveness. Working in an Agile Scrum environment, you will collaborate with cross-functional teams including engineering, product, BI, and service delivery to enhance our platform and develop new capabilities that empower creators to receive payment whenever their music is played. As a senior engineer, you will lead by example, mentor team members, influence architectural decisions, engage in design reviews, and promote continuous improvement across our data pipelines and platform reliability.If you are seeking a position where your insights are valued, your ideas can thrive, and your efforts contribute to significant industry advancements while addressing real-world data challenges in a collaborative setting, this opportunity at Orfium is designed for you.

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.

At Satori Analytics, we are dedicated to transforming industries through innovative algorithms, enhancing clarity for global brands using Data & AI. Our advanced solutions range from cloud-based systems for fintech to predictive analytics for airlines, effectively managing the entire data lifecycle from ingestion to AI application.As a rapidly expanding scale-up with a team of over 100 technical professionals—including Data Engineers, Data Scientists, and more—we provide cutting-edge analytics solutions across sectors such as FMCG, retail, manufacturing, and financial services. Join us in leading the data revolution in South-Eastern Europe and beyond!What to Expect in Your Role: Independently design and sustain scalable ETL pipelines within a collaborative project team, delivering clean, analytics- and AI-ready data. Utilize SQL, Python, PySpark, and tools like MS Fabric, Azure Data Factory, Databricks, and Snowflake to develop, optimize, and automate data processes. Create resilient ETL processes, scalable data models, and optimized design patterns for analytics and BI workloads. Guarantee data quality and governance via automated checks, monitoring, source-to-target mapping, data lineage, and continuous enhancements. Collaborate with cross-functional teams to comprehend data requirements, business semantics, and deliver high-quality solutions. Troubleshoot, optimize, and support production pipelines to ensure seamless data flow. Employ Git and Agile methodologies to work efficiently in collaborative, iterative projects.

METRO AEBE operates a large network of retail stores in Greece and Cyprus, including My Market, My Market Local, METRO Cash & Carry, and BEST VALUE. With more than 11,000 employees, the company has been recognized as a Top Employer for both 2025 and 2026. As the company continues to expand, it remains committed to business growth alongside sustainable practices. The Data Warehouse (DWH) team in Athens is adding a Data Engineer to support these efforts. Role overview This Data Engineer position focuses on designing, improving, and optimizing enterprise data products. The work directly supports data-driven decision-making throughout METRO AEBE.

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.

Location: Athens, Greece Company: d-one About d-one d-one is a consultancy focused on data, artificial intelligence, and transformation strategies. The firm helps organizations turn their ambitions into tangible results by aligning strategy, building strong data foundations, delivering large-scale solutions, and fostering trust through effective governance and a people-first approach. With offices in Zurich, Munich, and Athens, d-one supports clients across Europe and covers the entire data value chain using a pragmatic, people-centered methodology. Role Overview: Data & AI Engineer Based in the Athens consulting hub, the Data & AI Engineer works closely with project teams to advise clients through the conception, planning, and implementation of data and AI solutions. The role involves hands-on collaboration and occasional travel to Switzerland or other international locations for client work and team meetings at the Zurich headquarters. Key Responsibilities Analyze client requirements and design tailored data solutions. Contribute to projects in areas such as cloud engineering, infrastructure, data engineering (ETL), data science, and generative AI applications. Communicate findings and insights to stakeholders and management. Travel occasionally for client engagement and collaboration with the Zurich team. What We Look For University degree in Computer Science or a related field. Proficiency in technologies and programming languages such as SQL, Python, and Spark. Experience working with large datasets, streaming data, and databases. Background in cloud development and architecture, especially with Azure, AWS, or GCP. Hands-on experience with Databricks, Microsoft Fabric, or Palantir Foundry. Pragmatic, down-to-earth, and focused on results. Excellent communication skills in English. What d-one Offers A calm, focused work environment that values what matters most. An international team of talented, ambitious colleagues who enjoy both challenges and camaraderie. Opportunities for growth through the D ONE Academy, including mentoring, knowledge-sharing, expert groups, and tailored soft-skill and leadership training. Regular offsite social events. What Helps You Succeed Here Commitment to fully understanding client needs. Ability to deliver clear, high-value results. Intellectual agility and a client-friendly approach to problem-solving. Appreciation for creative, collaborative teamwork.

At Kpler, we are committed to empowering our clients to navigate complex market dynamics with confidence. By streamlining global trade information and delivering actionable insights, we enable organizations to make informed decisions in the commodities, energy, and maritime sectors.Since our establishment in 2014, we have prioritized providing superior intelligence through intuitive platforms. Our diverse team of over 700 experts from more than 35 countries works diligently to convert complex data into practical strategies, ensuring our clients maintain a competitive edge in an ever-evolving market landscape. Join us to harness innovative technology for meaningful outcomes and enjoy exceptional support on your path to success.Your Future RoleThe Junior Data Analyst will play a pivotal role in comprehending, analyzing, and transforming data to elevate Kpler’s analytical capabilities and product offerings within the maritime sector. This position merges data proficiency with industry insight to ensure data solutions meet market demands, enhancing data quality and relevance across applications and maritime content. The analyst will engage in all phases of the data lifecycle, including evaluation, collection, management, visualization, and interpretation, with a strong emphasis on generating impactful insights that support decision-making.