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Senior Data Engineer (Team Leader), Fintech

Optasia
Remote friendly (Athens Attica Greece)
Worldwide

Optasia is a fully-integrated B2B2X financial technology platform covering scoring, financial decisioning, disbursement & collection. We provide a versatile AI Platform powering financial inclusion, delivering responsible financing decision-making and driving a superior business model & strong customer experience with presence in 30 Countries anchored by 7 Regional Offices.
We are seeking for enthusiastic professionals, with energy, who are results driven and have can-do attitude, who want to be part of a team of likeminded individuals who are delivering solutions in an innovative and exciting environment.

Data is at the core of Optasia’s growth plan, and the Data Engineering team is a significant contributor to our success, achieved through data-driven decision making and risk management. We leverage and ingest data from multiple sources into our large-scale data lakehouses, where data are processed in analytical pipelines. We develop and run the pipelines in a state-of-the-art open-source big data technology stack.
We are looking for an experienced Senior Data Engineer – Team Leader to lead and inspire a team of two to three Data Engineers. In this role, you will combine hands-on expertise in building data infrastructure and pipelines with leadership responsibilities, enabling the team to deliver high-quality, scalable, and reliable data solutions that contribute to Optasia’s success.

What you will do

  • Lead, mentor, and support a team of Data Engineers, fostering collaboration, technical excellence, and professional growth.
  • Provide technical expertise and direction in data engineering, guiding the team to deliver high quality scalable data analytical pipelines.
  • Support the testing, selection and deployment of data engineering tools, technologies, and methodologies.
  • Design, build, and optimize end-to-end batch and streaming data analytical pipelines.
  • Develop, maintain, and evolve the company’s big data infrastructure and core libraries for large-scale ingestion and processing.
  • Work closely with Solution Architects, Data Assurance Engineers, ML Engineers, and System Administrators for the design, delivery, and support of end-to-end data workflows.
  • Drive best practices in code quality, testing, CI/CD, and data governance, ensuring scalability, performance, and compliance with data protection regulations (e.g., GDPR).
  • Conduct code reviews, align coding standards, and oversee configuration management of the big data infrastructure.

What you will bring

  • Bachelor’s or Master’s degree in Computer Science or Informatics.
  • 3+ years of experience in Data Engineering.
  • Strong hands-on expertise with the Apache Hadoop ecosystem (HDFS, Hive, Spark, YARN).
  • Proficiency in Scala, Java, Python, SQL, scripting (Bash/Python).
  • Experience with relational and NoSQL technologies.
  • System administration skills in Linux.
  • Practical experience with deployment, configuration, and maintenance of distributed systems and data/software engineering tools.
  • Experience with CI/CD orchestration.

 Optional requirements (will be considered a plus):

  • Worked extensively in Hadoop / Spark / Spark Streaming / Hive.
  • Experience with data and ML flow engines and tools, e.g. Apache Airflow, Apache NiFi, Druid.
  • Hands-on exposure to modern data lake storage and table formats, e.g. Apache Iceberg, Apache Hudi.
  • Experience in working with secure code development guidelines and coding practices (i.e. OWASP, NIST).
  • Passion for learning new technologies and eagerness to collaborate with other creative minds.

Why you should apply

What we offer:
💸 Competitive remuneration package
🏝 Extra day off on your birthday
💰 Performance-based bonus scheme
👩🏽‍⚕️ Comprehensive private healthcare insurance
📲 💻 All the tech gear you need to work smart
Optasia’s Perks:
🎌 Be a part of a multicultural working environment
🎯 Meet a very unique and promising business and industry
🌌 🌠 Gain insights for tomorrow market’s foreground
🎓 A solid career path within our working family is ready for you
📚 Continuous training and access to online training platforms
🥳 CSR activities and festive events within any possible occasion
🍜 Enjoy comfortable open space restaurant with varied meal options every day
🎾 🧘‍Wellbeing activities access such as free on-site yoga classes, plus available squash court on our premises

Optasia’s Values 🌟

#1 Drive to Thrive: Fully dedicated to evolving. We welcome all challenges and learning opportunities.
#2 Customer-First Mindset: We go above and beyond to meet our partners’ and clients’ expectations.
#3 Bridge the Gap: Knowledge is shared, information is exchanged and every opinion counts.
#4 Go-Getter Spirit: We are results oriented. We identify any shortcomings that hold us back and step up to do what’s needed.
#5 Together we will do it: We are committed to supporting one another and to understanding and respecting different perspectives, as we aim to reach our common goals.