Senior Windows Systems Engineer - Fintech Solutions

Optasia is a cutting-edge B2B2X financial technology platform specializing in scoring, financial decision-making, disbursement, and collection. Our mission is to promote financial inclusion for everyone. We are transforming the financial landscape in our unique way.We are on the lookout for passionate professionals who are energetic, results-oriented, and possess a can-do attitude. Join our dynamic team of innovators dedicated to delivering top-notch solutions in an exhilarating environment.As a vital member of the Systems Engineering team at Optasia, you will oversee the efficient provisioning, installation/configuration, operation, and maintenance of our systems hardware and software, along with associated infrastructure. Your contributions will include participating in technical research and development to foster ongoing innovation within our infrastructure. You will ensure compliance with organizational values by upholding high standards in system hardware, operating systems, software systems, and related procedures, thereby empowering staff, volunteers, and partners.

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.

Optasia is a cutting-edge B2B2X financial technology platform specializing in scoring, financial decision-making, disbursement, and collections. Our mission is to promote financial inclusion for everyone, and we pride ourselves on transforming the world in our own unique way.We are on the lookout for passionate and proactive professionals who are driven by results and possess a can-do attitude. Join a team of like-minded individuals dedicated to delivering innovative solutions in an exciting environment.We invite you to apply for the position of Data Engineer within our expanding Data Engineering team. In this role, you will design and implement highly scalable end-to-end batch and streaming data pipelines, contributing to the overall success of Optasia.Your responsibilities will include:Enhancing the scalability, stability, accuracy, speed, and efficiency of our existing data systems.Designing and developing end-to-end data processing pipelines.Navigating a diverse technology stack, including Scala, Spark, Python3, Bash/Python scripting, Hadoop, and SQL.Designing, constructing, testing, and deploying new libraries, frameworks, or complete systems while adhering to the highest standards of testing and code quality.Developing, maintaining, and optimizing core libraries for batch processing and large volume data ingestion into our big data infrastructure.Building and maintaining CI/CD orchestration.What we expect from you:Bachelor's or Master's degree in Computer Science or Informatics.A minimum of 2 years experience in Data Engineering.Proven experience in software/data engineering and/or operations/DevOps/DataOps.Familiarity with the Apache Hadoop ecosystem (YARN, HDFS, HBase, Spark).Hands-on experience with both relational and NoSQL databases.Proficient in systems administration with Linux.Experience in deploying, configuring, and maintaining distributed systems and data/software engineering tools.Your key attributes:Experience with fluid virtual infrastructures such as containers (e.g., Docker, Kubernetes).Familiarity with data and ML flow engines and tools, such as Apache Airflow.A strong passion for learning new technologies and collaborating with other creative professionals.Why you should join us:We offer a range of benefits including: Flexible hybrid working options Competitive remuneration package An extra day off on your birthday Performance-based bonus scheme‍ Comprehensive private healthcare insurance All the tech gear you need to work efficientlyExperience the Optasia perks: Join our multicultural working environment Engage with a unique and promising business and industry Gain insights into the future market landscape Enjoy a solid career path within our working family.

Optasia is a cutting-edge B2B2X financial technology platform specializing in scoring, financial decision-making, disbursement, and collection processes. Our mission is to foster financial inclusion globally, as we strive to transform the financial landscape in our unique way.We are on the lookout for passionate professionals who are energetic, results-oriented, and possess a proactive mindset. Join our dynamic team at Optasia, where you will contribute to delivering innovative solutions in a stimulating environment. As a member of the Solution Architecture team, your main responsibility will be to collaborate closely with clients, product management, and software development teams, showcasing your high level of technical expertise, product knowledge, and effective communication skills.Your Responsibilities:Translate business requirements into effective technology solutions utilizing Optasia’s proprietary platform.Engage with various stakeholders from clients to ensure IT solutions meet business goals.Develop technical documentation including use cases, flow diagrams, integration specifications, and solution documentation.Work collaboratively with internal teams such as Engineering, Quality Assurance, Product Management, Business, and Operations to implement innovative solutions.Assess and prototype APIs for seamless third-party integrations.Partner with the Software Architecture team to identify opportunities for enhancements to the Optasia platform.Provide technical guidance to the sales team, including product demonstrations and support for RFP responses.

Join our dynamic team as a Senior Engineering Manager in the Fintech domain at efood, where you will be pivotal in developing a robust, scalable, and adaptive platform that underpins customer payments and internal financial operations.This is a high-impact leadership position within a critical business sector, overseeing the complete lifecycle of efood's payment and financial transaction processes. Your responsibilities will span from customer order payments through downstream operations, inclusive of refunds, cancellations, fraud checks, vendor payouts, reporting, and regulatory compliance. Your engineering expertise, leadership acumen, and ability to navigate a complex stakeholder landscape will be essential.You will collaborate closely with Product Managers, Finance stakeholders, Engineering leaders, C-level executives, and Delivery Hero teams to enhance operational efficiency, elevate technical standards, and support the growth of the domain as our business expands. Technical EnvironmentOur architecture employs microservices, with over 80 services managing high volumes of requests through both synchronous and event-driven communication.Our technology stack includes Golang, REST APIs, gRPC, Kubernetes, AWS, GCP, PostgreSQL, MongoDB, Redis, and messaging platforms like SNS, SQS, Kafka, and cloud messaging services.As part of the Delivery Hero group, we maintain close collaboration with their Global Services teams. Your Responsibilities:Lead the Fintech engineering domain, managing a hybrid team structure that includes an Engineering Manager and senior engineers, adapting the team layout as priorities evolve.Collaborate with Product Managers to drive the delivery of innovative payment capabilities and domain enhancements, while providing valuable technical insights, tradeoffs, and prioritization guidance.Engage with Finance stakeholders to optimize finance flows, minimize discrepancies, enhance automation, and clarify cross-team issues and dependencies.Provide technical leadership by guiding architectural and design decisions, mentoring engineers and managers, and raising the standard for engineering quality, ownership, and systems thinking.Ensure execution across multiple services and teams, managing dependencies with Delivery Hero services by maintaining clear priorities, surfacing risks early, and tracking progress, challenges, and outcomes.Assist the team in balancing feature delivery, system reliability, and technical enhancements, with hands-on involvement as needed to remove obstacles or support critical choices.Mentor and support the development of engineers and managers to foster their growth.

Role overview Speechify seeks a Senior Software Engineer with experience in Windows and desktop applications for its Athens, Greece office. The focus is on building software that enhances user experience and accessibility for a broad audience. What you will do Design, develop, and maintain desktop applications for Windows platforms Collaborate with colleagues across teams to deliver high-quality software Contribute to technical decisions and help guide project direction Work to ensure applications are scalable, efficient, and reliable

uni-systems seeks a Senior Solutions Manager for its Data Analytics and AI Unit in Athens, Attica. This role guides clients through the adoption and optimization of data, analytics, and AI solutions, balancing technical consulting with business development. The focus spans both enterprise and public sector organizations. Key responsibilities Collaborate with enterprise clients to identify and address business needs using data-driven and AI-powered solutions. Deliver technical consulting across data, analytics, and AI domains. Review and analyze tender requirements, especially for complex public and enterprise procurement projects. Lead the creation of technical proposals, prepare responses to RFPs and RFIs, and develop supporting documentation. Develop and present clear demonstrations that highlight the value of analytics and AI solutions. Work with Account Managers on the financial aspects of proposals and coordinate internal approvals. Maintain relationships with vendors and partners, staying informed about product updates, pricing, and co-selling opportunities. Conduct forecasting and business planning for vendor products and solution areas. Monitor market trends in data, analytics, and AI, translating insights into actionable strategies for clients and internal teams. Organize and participate in events to promote solutions and support business development efforts. Serve as a liaison among sales, delivery teams, and technology partners to ensure effective communication. Location This position is based in Athens, Attica, Greece.

Join our rapidly expanding team at uni-systems as a Senior Network Engineer, where your expertise will play a crucial role in our Networking department. In this exciting position, you will be tasked with the design, implementation, integration, optimization, and support of sophisticated converged networks, contributing to large-scale IT projects both domestically and across EU countries.Your Contributions:We value diverse backgrounds and encourage our UniQue team members to bring their passion for technology and innovation to the table. As a Senior Network Engineer, your responsibilities will include: Engaging in client discussions to gather requirements and provide consultancy on cutting-edge technologies and solutions. Collaborating with cross-functional teams during the presales process. Creating and updating project documentation. Leading the implementation of projects and solutions. Executing tasks related to project and solution implementation. Ensuring adherence to project timelines. Upgrading and performing other relevant tasks on client infrastructures. Providing ongoing support and troubleshooting for existing infrastructures. Conducting fault investigations in a lab environment. Mentoring and guiding colleagues on technical matters. Developing technical expertise in specific products, technologies, and solutions. Participating in events for continuous education and professional development.

Join our dynamic team at Netcompany A/S as a Senior System Engineer. In this pivotal role, you will leverage your technical expertise to design, implement, and maintain advanced systems that drive our operations forward. You will work closely with cross-functional teams to ensure the seamless integration of technology solutions that meet business needs.Your contributions will be vital in optimizing system performance and enhancing user experience. If you are passionate about technology and innovation, we invite you to apply and be part of our mission to deliver excellence.

At Uni Systems, we are dedicated to transforming digital aspirations into tangible outcomes. As we continue to expand, we are seeking a Senior Solutions Manager to become an integral part of our UniQue Telecom team.Your Contributions to the Team:Engage with clients to gather their needs and requirementsDevelop and deliver impactful presentations and demonstrations that effectively convey our unique value propositionEvaluate the requirements and specifications of tendersContribute to the technical proposal writing, including responses and all necessary documentationOversee all technical components of RFP/RFI responsesParticipate in training sessions on new technologies from vendorsStay updated on specialized solutions from partners and vendorsPrepare the financial aspects of proposals at the cost levelReview proposals for clients and tendersCommunicate with vendors regarding product invoicing and pricingAddress urgent client requests and facilitate internal communicationsFollow up with clients post-meetings and presentationsMonitor market trends regarding new technologies/productsDrive business development initiativesResearch solutions or synergies for specialized offeringsCreate marketing materials to promote solutionsConduct forecasts related to solutions

Optasia is a cutting-edge B2B2X financial technology platform that encompasses scoring, financial decision-making, disbursement, and collection services. Our adaptable AI platform fosters financial inclusion, facilitates responsible financing decisions, and enhances customer experiences across 39 countries, supported by 7 regional offices.We are on the lookout for dynamic and driven professionals who possess a proactive attitude and a results-oriented mindset. Join our innovative team to deliver exceptional solutions in an exciting and collaborative environment.Your Responsibilities:Conduct market research and identify distribution partners across Africa.Uncover underserved market segments.Identify new asset classes.Examine regulatory and market shifts.Analyze competitors to identify product gaps.Define and prioritize product features.Manage product backlog effectively.Oversee the prioritization of customer requests (CR).Support the initial rollout and integration of new products.Create comprehensive use cases and business requirements.Perform feasibility studies and draft business plans.Lead product design, development, and release processes.Coordinate the collection and prioritization of product functionality requests.Monitor developments in the fintech credit space.Evaluate new credit product propositions.Assess distribution partners and tailor products to meet their needs.Prepare detailed business requirements and product specifications.Define go-to-market (GTM) strategies.Draft user manuals and sales support documentation.Collaborate with legal teams on contract templates.Engage with various stakeholders to piece together product elements.Train commercial and operations teams on new products and distribution partners.Monitor and optimize new products and partnerships during the first year of operations.

Optasia is a cutting-edge B2B2X financial technology platform focused on providing scoring, financial decisioning, disbursement, and collection services. Our mission is to promote financial inclusion for everyone. We are reshaping the financial landscape in our unique way.We are looking for passionate and energetic professionals who are results-oriented and possess a proactive mindset. Join our team of like-minded individuals dedicated to delivering innovative solutions in an exciting and dynamic environment.As an Integration Support Engineer (ISE), you will assess operational changes proposed by external systems integrated with Optasia, evaluate their technical impact, and create appropriate rollout strategies. You will also be responsible for ensuring that all new or existing projects meet the technical criteria necessary to initiate the System Integration Testing phase, collaborating closely with a Solutions Architect to ensure architectural alignment.This position is focused solely on integration readiness, excluding live production support, low-level solution design, software development, and the maintenance of test environments.Your ResponsibilitiesAssess change requests including platform upgrades, protocol migrations, and topology modifications by quantifying technical impacts and rollback risks, outlining mitigation strategies, and securing a consensus on rollout plans with both internal and external stakeholders. Engage with the Solutions Architect as needed for modifications to the solution design.Communicate configuration and development prerequisites that third-party systems must fulfill to achieve System Integration Testing readiness, collaborating directly with system owners.Conduct a targeted suite of HTTP-based API smoke tests (REST, SOAP, RPC, etc.), troubleshoot any anomalies, and escalate unresolved issues to third-party counterparts and the Solutions Architect.Develop Integration Acceptance Testing (IAT) test cases for execution by Optasia developers, guided by the Solutions Architect.Maintain transparency and traceability by updating Jira and Confluence records for change requests and SIT preparations.Foster continuous improvement by converting lessons learned into reusable templates, including change request assessments, SIT readiness checklists, and smoke test scripts, to standardize future integrations.Transition smoothly to an Associate Solution Architect role once you demonstrate proficiency in design and business insight.

Optasia is a cutting-edge B2B2X financial technology platform focused on providing innovative solutions in scoring, financial decisioning, disbursement, and collection. We are dedicated to fostering financial inclusion for everyone and transforming the financial landscape.We are on the lookout for passionate and energetic professionals who are results-oriented and possess a can-do attitude. Join our vibrant team of like-minded individuals who are committed to delivering exceptional solutions in a dynamic and innovative environment.Data is the backbone of Optasia’s growth strategy, and our Data Engineering team plays a pivotal role in our success through data-driven decision-making and risk management. We ingest and process data from diverse sources into our expansive data lakehouses, utilizing state-of-the-art open-source big data technology stacks to create robust analytical pipelines.We are searching for a seasoned Senior Data Engineer – Team Leader to guide and motivate a team of two to three Data Engineers. In this role, you will blend hands-on expertise in constructing data infrastructure and pipelines with leadership responsibilities, empowering your team to produce high-quality, scalable, and dependable data solutions that advance Optasia’s objectives.Your ResponsibilitiesLead, mentor, and nurture a team of Data Engineers, promoting collaboration, technical excellence, and professional development.Provide technical guidance and expertise in data engineering, steering the team toward delivering high-quality, scalable data analytical pipelines.Assist in selecting, testing, and deploying data engineering tools, technologies, and methodologies.Design, construct, and enhance end-to-end batch and streaming data analytical pipelines.Develop, maintain, and evolve the organization’s big data infrastructure and core libraries for large-scale data ingestion and processing.Collaborate closely with Solution Architects, Data Assurance Engineers, ML Engineers, and System Administrators for the design, delivery, and support of comprehensive data workflows.Promote best practices in code quality, testing, CI/CD, and data governance, ensuring scalability, performance, and adherence to data protection regulations (e.g., GDPR).Oversee code reviews, align coding standards, and manage the configuration of the big data infrastructure.

Join our dynamic team at uni-systems as a Senior Microsoft Systems Engineer within the UniQue Modern Workplace & Cloud Services division, part of our ICT Services Technical Division. We are on a continuous growth path and passionate about technology and innovation!Your role will involve designing, implementing, optimizing, and supporting complex IT systems based on Microsoft technologies. You will be responsible for managing both remote and on-site IT infrastructure for our clients while also investigating and resolving technical issues.

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.

Athena Cloud Limited is actively seeking a Senior Systems Engineer (Linux and Storage) to join our dynamic and skilled team. As a premier provider of Sovereign Cloud, Sovereign AI, and Sovereign Data solutions, we are committed to empowering our clients' digital transformations through secure and cutting-edge services. In this key position, you will utilize your extensive expertise in Linux systems and storage technologies to design, implement, and maintain systems that support our innovative offerings.Your profound knowledge of Linux and advanced storage solutions will be crucial in optimizing system performance, executing effective data management strategies, and ensuring the uninterrupted operation of our infrastructure. You will work closely with engineering teams and other stakeholders to create scalable, high-availability systems tailored to meet the diverse needs of our clients.As a Senior Systems Engineer, you will lead complex projects, mentor junior engineers, and spearhead initiatives aimed at continuous improvement in Linux and storage operations. If you are passionate about leveraging technology to safeguard data sovereignty while driving innovation in a fast-paced environment, we invite you to explore this opportunity with us.

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.

At Sunlight Group, we are at the forefront of revolutionizing energy storage solutions tailored for industrial and advanced technology needs. Our commitment is driven by a profound passion for performance and an unwavering pursuit of continuous improvement. We maintain a conscientious approach to our environmental footprint, fostering a culture grounded in openness and respect across all interactions. With a robust customer focus, we harness data and insights to craft innovative solutions that empower our clients and enrich our collective ecosystem. Embracing an entrepreneurial spirit, we cultivate a dynamic and collaborative environment, inspiring our team through transparent communication, ongoing learning, and opportunities to realize their full potential.Our Vision: Transforming Energy Storage Solutions To Power A Sustainable Tomorrow.Our Mission: We deliver cutting-edge, high-quality energy storage solutions for industrial and advanced technology applications, steering us toward an all-electric future.We are actively seeking a Senior Systems & Cloud Engineer with extensive expertise in Microsoft technologies and Microsoft Azure to spearhead cloud migration and transformation initiatives. This role demands hands-on technical leadership, the ability to mentor engineering teams, and profound knowledge of security and networking. The selected engineer will be instrumental in designing, implementing, and securing modern cloud and hybrid environments while collaborating closely with internal customers and stakeholders.

As a part of our continuous growth, we are seeking a Senior Cloud Solutions Architect to enhance our UniQue Enterprise & Presales Solutions Business Unit. In this pivotal role, you will be instrumental in designing, defining, and implementing intricate IT projects that translate common services and product requirements into robust, end-to-end technology solutions.What You Will Bring to the Team:Our UniQue team is composed of diverse professionals from various backgrounds and industries, each sharing a common passion for technology and innovation. For the Senior Cloud Solutions Architect position, your responsibilities will include:Creating and defining complex IT solutions utilizing PaaS cloud services and cloud-native technologies.Facilitating white-boarding sessions and architectural reviews with clients.Conducting demonstrations and Proof of Concepts (PoCs) on public cloud platforms.Generating high-quality documentation for solution designs.Serving as a trusted advisor to both internal and external clients, providing guidance on the usage and optimization of cloud technologies.Effectively managing multiple projects while taking ownership of architecture design.Collaborating with internal teams such as Account Management, Professional Services, Delivery, and public cloud vendors.Staying updated with emerging technologies and employing a creative approach to designing innovative solutions.