# Senior Data Engineer, Fintech

> Optasia · Athens, Greece (Hybrid) · — · Posted 2025-10-06

**Workplace:** hybrid

**Department:** Data & Risk

## Description

**Optasia** is a fully enabled B2B2X **financial technology platform** covering scoring, financial decisioning, disbursement and collection. We are committed to enabling financial inclusion for all. **We are changing the world our way**.  

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 a **Senior Data Engineer** to join our growing Data Engineering team. As part of our team, you will be able to enrich and further evolve the company’s big data infrastructure, and the highly scalable end-to-end batch and streaming data pipelines, contributing to Optasia’s success. 

**What you will do**

-   Provide technical expertise by improving scalability, stability, accuracy, speed and efficiency of our existing Data systems
-   Design and develop end-to-end data processing pipelines
-   Develop, maintain and optimize our core libraries for batch processing and ingestion of large volumes of data to the big data infrastructure
-   Be comfortable navigating the following technology stack: Hadoop ecosystem, Hive, Scala, Spark, java, Python, scripting (Bash/Python), SQL etc.  
-   Design, build, test and deploy new libraries, frameworks or full systems for our core systems while keeping to the highest standards of testing and code quality
-   Work closely with experienced Data Engineers, Solution Architects, ML engineers and System Administrators for the design, delivery and support of the company’s end-to-end data processing workflows
-   Build and maintain CI/CD orchestration

**What you will bring**

-   Bachelor’s or Master’s degree in Computer Science or Informatics.
-   5+ 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.

## Apply

[Apply at Optasia](https://apply.workable.com/optasia/j/9F47B07512/apply)

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