# Data Assurance Engineer, Fintech

> Optasia · Athens, Greece (Hybrid) · — · Posted 2026-05-26

**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.**

Since company’s inception, over a decade ago, we have grown to become a global leader in the Fintech fields, constantly expanding and adding new solutions, offerings, and untapped monetization opportunities for all our partners and clients.

As member of the **Data Assurance** team in **Optasia,** you will work closely with the Data Architect to perform automated sanity checks in large scale volumes of pre-processed and post-processed data and test various algorithms used in the Credit Risk Assessment procedure for nano and micro-finance.  
Working closely with other creative minds, the **Data Assurance Engineer** will be able to demonstrate his/her expertise on data assurance, statistical models and machine learning as well as his/her high level of analytical and creative skills. He/she will have the opportunity to further develop knowledge and expertise on data assurance, AI, machine learning, predictive and risk analytics.

**What you will do**

-   Automation of data assurance and data validation processes.
-   Perform sanity checks in large scale volumes of pre-processed and post-processed data.
-   Research analyze and document data elements that are missing and/or reported as inaccurate by our clients. Determine course of action for resolution using independent thought and judgment
-   Perform data pre-processing.
-   Automate testing procedures of Risk Models and various algorithms used in Credit Risk Assessment.
-   Document and track production problems, processes, procedures, and changes within the data amendment

**What you will bring**

-   BSc/MSc in Mathematics, Physics, Computer Science, Computer Engineering or other Natural Sciences from an accredited institution.
-   Hands-on experience at least in any of the following (with descending significance): Data assurance/quality, Automation of QA processes, Software testing, Credit risk models, Risk Analytics
-   Strong analytical and problem-solving skills with a strong attention to detail.
-   Passion for learning, exploring, and testing machine learning models and AI algorithms.
-   Ability to succinctly report status and results.
-   Familiar with Linux.
-   Experience with tools such Microsoft Excel.
-   Communicates effectively in English in written and verbal form
-   Self-motivated, self-directed, resourceful and in possession of a high level of personal initiative
-   Ability to hit tight deadlines and work under pressure and strict attention to detail.

**Will be considered a plus**

-   Hands-on experience of big data processing and analytics.
-   Hands-on experience of data bases (SQL and NoSQL).
-   Creative skills.
-   Programming skills.
-   Hands-on experience of Spark, Python (secondarily Java, MATLAB, R).
-   Hands-on experience of Grafana or any other Data Visualization Tool.
-   Hands-on Experience of Automation Tools e.g. Jenkins.
-   Experience in working with secure code development guidelines and coding practices (i.e. OWASP, NIST)

**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  
🍜 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/604638C8A7/apply)

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