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Suleyman Kaya

@suleymankaya

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Data Engineer and Python Developer building large-scale ETL and analytics platforms across regulated industries.

Poland

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What I'm looking for

I’m looking for a team where I can build reliable data infrastructure and backend services with Python, PySpark, and cloud platforms. I want an Agile, collaborative environment focused on clean, tested code and measurable impact through analytics.

I’m a Python Developer and Data Engineer with 7+ years of experience building backend systems, data pipelines, and analytical platforms across finance, healthcare, energy, and marketing. I focus on clean, well-tested, SOLID-principled engineering and thrive in Agile, collaborative environments.

Since May 2024, I’ve been building data infrastructure and analytical tooling within UBS Technology. I developed and optimised large-scale ETL workflows for financial data using PySpark, Databricks, Pandas, and Azure—handling datasets in the hundreds of millions of rows—while designing storage and retrieval systems across RDBMS and NoSQL backends with compliance in mind.

Earlier, at Zealic Health (May 2022–Apr 2024), I architected microservices-based backend systems with FastAPI, SQLAlchemy, Pydantic, and Django Rest Framework, and I introduced asynchronous messaging via RabbitMQ to improve resilience. I also established CI/CD (Jenkins + Bitbucket) with SonarQube and Pytest-based test suites, and I owned API design and documentation via Swagger and Postman.

My background also includes building a marketing analytics platform with Django and ML tooling, leading R&D initiatives for IoT and machine learning in the energy sector, and supporting software quality through manual and automated testing. I bring strong analytical and problem-solving skills to deliver actionable insights that directly influence high-stakes decisions.

Experience

Work history, roles, and key accomplishments

Current

Data Engineer

Current

UBS

May 2024 - Present (2 years 1 month)

Developed and optimized large-scale ETL workflows for financial datasets (hundreds of millions of rows) using PySpark, Databricks, Pandas, and Azure. Built internal finance data interfaces and designed compliant data storage/retrieval systems across RDBMS and NoSQL backends.

Pyspark Databricks ETL Pandas Azure RDBMS NoSQL Data Compliance Gitlab Agile

Python Developer

Zealic Health

May 2022 - Apr 2024 (1 year 11 months)

Architected and implemented microservices-based backend systems using FastAPI, SQLAlchemy, Pydantic, and Django REST Framework for pharmaceutical clinical and operational workflows. Improved resilience and delivery confidence by introducing RabbitMQ messaging, Docker/AWS deployments, and Jenkins/Bitbucket CI/CD with SonarQube and Pytest.

fastAPI SQLAlchemy Pydantic Django REST Framework RabbitMQ Docker AWS Jenkins SonarQube Pytest

Python Developer

Telescope

Aug 2021 - May 2022 (9 months)

Built a data-driven marketing analytics platform using Django (MVT) and integrated Scikit-Learn, Pandas, NumPy, and Matplotlib for actionable campaign and audience insights. Developed responsive UI views with HTML/CSS/JavaScript/Bootstrap and managed Azure deployments with GitHub/Git version control.

Django scikit learn Pandas NumPy Matplotlib HTML CSS JavaScript Bootstrap Azure

R&D Engineer

Dicle Elektrik

Dec 2017 - Jul 2021 (3 years 7 months)

Led energy-sector R&D projects applying IoT and machine learning to real-time sensor and customer consumption datasets. Built Python-based analytical tools and delivered dashboards so non-technical stakeholders could interpret complex energy data independently.

IoT Machine Learning Python Pandas NumPy Matplotlib scikit learn Data Visualization Dashboards Sensor Data

Software QA Engineer

ModaCruz

Jul 2017 - Sep 2017 (2 months)

Designed and executed manual and automated test plans covering functionality, performance, and edge cases. Partnered with developers to triage bugs, provide reproducible steps, and track resolution to improve release quality.

Test Planning Manual Testing Automated Testing Performance Testing Edge Cases Repro Steps Regression Testing xUnit