Machine Learning & Data Operations Engineer - Fintech

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 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!

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 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.

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.

Do you have a passion for Artificial Intelligence? At Satori Analytics, we are on a mission to revolutionize the world through innovative algorithms that provide insights to global brands using Data & AI. Our state-of-the-art solutions encompass the full data lifecycle—from data ingestion to advanced AI applications—serving various sectors including fintech, airlines, FMCG, retail, manufacturing, and financial services.As a rapidly expanding scale-up with a team of over 100 technology specialists—including Data Engineers, Data Scientists, and more—we are at the forefront of the data revolution in South-Eastern Europe and beyond. Come and be part of our journey!Your Daily Responsibilities:Collaborate and Learn: Work alongside Solution Architects, Developers, and Business Analysts to ensure the successful delivery of projects.Build Data Solutions: Assist in the design and development of ETL pipelines utilizing tools such as Azure Data Factory and Databricks.Get Hands-On: Participate in data migrations, cloud transitions, and automation of routine tasks.Solve Problems: Help troubleshoot and debug data processes under the mentorship of senior engineers.Grow Your Skills: Thrive in a dynamic environment with ample opportunities for professional development.

Join our dynamic team as a Senior Site Reliability Data Engineer, where you will play a pivotal role in enhancing and optimizing our data systems. Your expertise will drive the reliability and scalability of our platforms, ensuring seamless user experiences and high availability.In this role, you will collaborate closely with cross-functional teams to implement best practices in data reliability and performance. You will be responsible for monitoring, troubleshooting, and enhancing our data pipelines and infrastructure.

We are actively seeking a talented Data and AI Engineer specializing in Intelligent Manufacturing to join our dynamic R&D team. This position is open to candidates fluent in English, and you can work remotely from Athens, Greece, or Luxembourg. As a member of our esteemed team, you will collaborate with diverse experts focused on achieving shared objectives. We value individuals who exemplify responsiveness, integrity, and reliability, complemented by exceptional analytical and organizational skills. Your role will support projects funded by the European Commission and national research initiatives, where you'll be expected to demonstrate initiative, flexibility, and accountability. If you have significant experience in intelligent manufacturing production lines, robotics, IoT applications, or related technologies with a software focus, we encourage you to apply. Experience with European-funded R&D projects will be an asset.Key Responsibilities:Oversee and execute projects funded by the European Commission;Develop comprehensive document deliverables and reports for R&D projects and business development (requirements, conceptual models, specifications, integration plans, etc.);Design, develop, and document innovative manufacturing technologies and solutions, including AI for manufacturing and eco-friendly production lines;Implement new manufacturing processes and technologies for next-generation intelligent production lines.

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.

Role overview tgndata is hiring a Data Engineer in Athens, Attica. This hybrid role focuses on building and maintaining the data infrastructure that supports the company’s analytics and decision-making. What you will do Design, develop, and maintain data pipelines Work closely with teams to ensure reliable data flows for analytics and reporting Use Python to create scalable and efficient solutions for extracting insights from company data Location This position is based in Athens, Greece, with a hybrid work arrangement.

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.

Uni Systems delivers ICT integrated solutions and services across more than 20 European countries. Our team covers consulting, design, implementation, and ongoing support for clients seeking digital transformation. About the Initiative We are participating in the "Engineering the World: Addressing Data Scarcity 2026" event, a flagship gathering focused on technology and innovation. This initiative brings together experts and forward-thinking professionals to tackle challenges around data scarcity. Connect with Us Uni Systems welcomes candidates interested in transformative projects and innovative solutions. Submit a CV to join us during the event and explore how your skills can contribute to our shared vision. Location Athens, Attica, Greece

Role overview Kaizen Gaming seeks a Product Manager in Athens, Greece to help drive the direction of its Gaming Platform. The focus is on developing and refining products that appeal to users and encourage them to stay engaged. Building new features and improving user experiences are central to keeping the platform strong in a competitive market. What you will do Collaborate with teams from different departments to set the product vision and define clear goals. Create and update the product roadmap, shaping long-term strategy. Lead improvements that boost user engagement and enhance the overall experience. Support efforts to keep the platform at the forefront of the gaming industry.

Join Mercier Consultancy as a German Speaking Customer Support Representative in our Virtual Job & Freelance Platforms Department! In this vital entry-level position, you will be the primary point of contact for our German-speaking clients, delivering top-notch support and guidance as they explore our platforms. Your proficiency in German will allow you to foster strong relationships and ensure our clients enjoy a smooth experience with our services.If you are a proactive problem-solver with a passion for helping others, we encourage you to apply and make a meaningful contribution in a collaborative and supportive environment.Key Responsibilities Respond promptly to customer inquiries in German via email, phone, and chat. Assist clients with questions about job postings, freelance opportunities, and platform features. Accurately document customer interactions and solutions in our CRM system. Collaborate with internal teams to troubleshoot and resolve complex client issues. Guide clients on optimizing their profiles and job applications. Collect client feedback to enhance service delivery and user experience. Engage in training sessions to stay informed about platform updates.

Join our dynamic team at finartix as a Mid-Level Data Engineer! We are seeking motivated individuals with a passion for data to enhance our clients' technological landscape across various industries in the Greek market. In this pivotal role, you will be instrumental in developing, implementing, and managing innovative technology solutions that elevate our clients' data ecosystems and optimize overall delivery.Key Responsibilities:Engage in the complete software development lifecycle by designing, testing, and maintaining tailored data solutions.Utilize effective methods for data collection and analysis to provide strategic recommendations that align with client business objectives.Serve as a trusted technical consultant for clients, guiding them through data challenges.Collaborate as an essential member of an Agile Team, contributing to a fast-paced and collaborative work environment.

At Sunlight Group, we are pioneering the future of energy storage for industrial and advanced technology applications, fueled by our commitment to performance and continuous improvement. Our vision is to revolutionize energy storage solutions, empowering a sustainable tomorrow while upholding a strong sense of environmental responsibility. Our culture is rooted in openness and respect, and we strive to deliver innovative, customer-centric solutions that drive an all-electric future through high-quality, state-of-the-art technologies. With an entrepreneurial spirit, we cultivate an agile and collaborative environment where our team members are encouraged to grow, innovate, and achieve their full potential.We are seeking an experienced IT Digital Platforms Architect to champion key enterprise digital initiatives, such as CRM–ERP integration, IoT platform consolidation, and customer-facing digital platforms. This role requires translating business and platform strategies into effective, scalable solution architectures while providing guidance to delivery teams across multiple projects, combining hands-on design, coordination, and technical leadership.Key responsibilities include:Crafting end-to-end solution architectures for systems including Microsoft Dynamics 365 CRM, SAP (ECC/S4), IoT platforms, and customer-facing portals.Defining integration patterns (APIs, events, middleware) among enterprise systems.Contributing to the target-state platform architecture and roadmap.Ensuring solutions comply with cloud, security, and data standards.Supporting CRM ↔ SAP integration projects.Facilitating the consolidation of two IoT platforms, including data flows and platform capabilities.Assisting in the evaluation of build vs buy vs lease options for customer portals.Guaranteeing the seamless integration of customer portals with CRM, SAP, and IoT data.Collaborating with product owners, delivery teams, and vendors to ensure successful implementation.Reviewing solution designs and technical decisions.Identifying and addressing architectural and integration risks early on.Supporting technical decision-making during delivery phases.Acting as a technical liaison between business stakeholders, IT teams (Cloud, Security, and Data Management), external vendors, and system integrators.Communicating architectural decisions effectively to non-technical audiences.

Join Mercier Consultancy as a Dutch Speaking Customer Support Representative in our dynamic Virtual Job & Freelance Platforms Department! In this essential role, you will serve as the primary point of contact for our Dutch-speaking users, offering expert guidance and support as they explore job opportunities and freelance options on our platforms. Your exceptional communication skills and customer service experience will be crucial in assisting users to successfully navigate their career paths.This role presents an exciting opportunity for individuals who are enthusiastic about supporting others in the gig economy. If you are proactive, friendly, and excel in a team-oriented environment, we invite you to apply!Key ResponsibilitiesHandle customer inquiries in Dutch via email, phone, and chatGuide users on platform-related queries, account management, and job search techniquesAccurately document customer interactions and solutions in our support systemCollaborate with internal teams to resolve user issues and enhance the platformProvide insights on freelancing best practices and job market trendsGather user feedback to improve service quality and user experienceEngage in training sessions to remain updated on platform changes and features

Mercier Consultancy seeks a Swedish-speaking Helpdesk Expert to support a well-known restaurant platform from the Athens office. This role provides technical and customer support to Swedish-speaking clients in the restaurant industry, focusing on both troubleshooting and guiding users through the platform's features. Role overview The Helpdesk Expert serves as the first point of contact for Swedish-speaking users. Day-to-day work involves resolving technical issues, assisting with onboarding, and ensuring clients have a smooth experience using the platform. Strong command of Swedish and solid technical skills are key for this position. Main responsibilities Provide helpdesk support to restaurant clients in Swedish via phone, email, and chat. Troubleshoot and resolve technical problems related to the platform. Assist clients with onboarding, training, and using platform features effectively. Document support cases and client communications in the ticketing system. Collaborate with product and development teams by sharing client feedback. Stay updated on platform changes and industry trends to offer relevant support. Location This is an on-site role based in Athens, Attica, Greece.

Join Mercier Consultancy as a German Speaking Messaging Platform Support Specialist in our vibrant Athens office. In this pivotal role, you will deliver outstanding support to our clients utilizing our cutting-edge messaging platforms. Your fluency in German will be crucial as you assist German-speaking clients in navigating any challenges they may face, ensuring their experience with our services is both smooth and rewarding.In this position, you will engage directly with clients to troubleshoot issues, provide valuable guidance on best practices, and help them unlock the full potential of our platform. This role offers an exceptional opportunity to thrive in a dynamic and collaborative environment, where you can expand your technical skills and deepen your expertise in messaging technologies.

Join Mercier Consultancy as a passionate Dutch Speaking Customer Support Representative within our dynamic Online Auction & Bidding Platform Department. In this pivotal role, you will serve as the primary liaison for our Dutch-speaking clientele, addressing their inquiries regarding our auction and bidding services. Your contributions will be crucial in ensuring a seamless and enjoyable experience for our users.If you have a strong affinity for customer service and a keen interest in online auctions and bidding, we invite you to apply! Help us empower our clients to maximize their interactions on our platform.Key Responsibilities Address customer inquiries in Dutch through phone, email, and chat channels. Guide users on bidding processes, auction regulations, and platform functionalities. Thoroughly document customer interactions and feedback within our support system. Collaborate with internal teams to swiftly resolve customer issues. Provide insights and information regarding forthcoming auctions and bidding opportunities. Engage in ongoing training to remain informed about platform updates. Gather and communicate customer feedback for continuous service enhancement.