# Junior Data Engineer, Fintech

> Optasia · Athens, Greece (Hybrid) · — · Posted 2026-03-23

**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 data-driven automated decision making.  We are currently leveraging and ingesting data from multiple sources from MNOs into our large-scale big data clusters and we are in the process of optimizing and modernizing our processes and infrastructure as the company scales.

We are looking for a **Junior** **Data Engineer** to join our growing Data Engineering team. As part of our team, you will be able to design and implement highly scalable end-to-end batch and streaming data pipelines and contribute to Optasia’s success.

**What you will do**

-   Work closely with Data Architects, ML engineers and Data Analysts for the design, delivery and support of the company’s ETL and ML pipelines
-   Develop and maintain our core libraries for batch processing and ingestion of large volumes of data
-   Design and develop new processes for real-time streaming of data from multiple sources
-   Develop and maintain the fast, accurate and efficient injection of data to the big data infrastructure
-   Experiment with and adopt novel data engineering design patterns and technologies

**What you will bring**

-   Bachelor's or Master's degree in Computer Science or Informatics
-   Knowledge of data modeling, mining and warehousing techniques
-   Good knowledge of one or programming languages, preferably Java, Scala or Python
-   Good knowledge of SQL
-   Strong analytical skills and attention to detail
-   Passion for learning new technologies and eagerness to collaborate with other creative minds

**Will be considered a plus**

-   Hands-on experience with Big Data technologies (Apache Spark, YARN, HDFS, MapReduce)
-   Hands-on experience with NoSQL databases
-   Experience on mathematical modelling, algorithms development, and machine learning

**Why you should apply  
**What we offer:  
👟 Flexible hybrid working  
💸 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/86459166F6/apply)

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