Dejan Simic
Co-Founder at Adaptive Technologies Inc.
Zurich, Zurich, Switzerland
Summary
👤
Senior🎓
Top SchoolDejan Simic is a Zurich‑based co-founder and engineer with nine years of experience building large-scale financial and actuarial models using open-source and cloud technologies, with a strong focus on IFRS 17, Python and PySpark. He founded Adaptive Technologies to design pipelines that process billions of records, train clients on IFRS 17 implementations, and deliver production workflows on Palantir Foundry. Before founding the company he held progressive roles at Swiss Re—from analyst to Head of Performance Data Integration—bringing deep domain expertise in economic valuation and data performance. Dejan also contributes to open-source testing efforts, having migrated and refactored SQL logic tests for Apache DataFusion to strengthen its SQL test-suite. His profile blends actuarial rigor with software engineering pragmatism, enabling auditable, scalable finance systems.
8 years of coding experience
4 years of employment as a software developer
Exchange Semester, Exchange Semester at The George Washington University - School of BusinessM.A. HSG, M.A. HSG at University of St.Gallen
German, English, Serbian
Github Skills (8)
fusion10
query-engine10
rust10
test-automation10
sql9
arrow-keys7
arrows7
arrow-js7
Programming languages (7)
Github contributions (5)
apache/datafusion
Apr 2021 - Jan 2024
Apache DataFusion SQL Query Engine
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:12 reviews, 8 PRs, 21 comments in 2 years 9 months
Contributions summary:Dejan focused on migrating existing unit tests to sqllogictest format and refactoring existing tests, specifically targeting DataFusion's SQL functionalities. Their contributions involved porting tests for order, predicates, references, and repartition functionalities. This included modifying test files and removing obsolete unit tests, ultimately aiming to streamline and improve the testing infrastructure.
querypythonquery-enginedataframerust
simicd/blog-posts
May 2020 - Aug 2020
Contributions:17 commits, 2 PRs, 2 pushes in 3 months
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