Martynas Čepas
@martynasepas
I build and lead scalable banking platforms from data model to delivery.
LithuaniaWhat I'm looking for
At Danske Bank, I own an internal document platform used by 9,000 people, covering its data model, .NET and React code, AWS infrastructure, and delivery. I migrated 80,000 documents and 400,000 items from an undocumented legacy system and designed the public API for the replacement.
I proposed a move to AWS S3 and PostgreSQL when the existing platform could not meet versioning and concurrency needs. I built Terraform across three environments, set up GitHub Actions CI/CD, and am adding Redis caching to stay within upstream API limits at peak load.
Previously at AB SEB, I built a counterparty risk classification system for enterprise clients, supporting 30 calculation models used in credit and capital processes. At Elitnet, I built fraud-detection alert views, drilldowns, and rule-building tools for international telecom clients.
I refine requirements with stakeholders before planning delivery, and I regularly review PRs, mentor developers, and interview candidates. I also built multi-model, multi-agent AI development workflows that colleagues adopted, and hold an MSc in Cybersecurity.
Experience
Work history, roles, and key accomplishments
Owns a 9,000-user document platform end to end, including data model, .NET and React code, AWS infrastructure, and delivery. Migrated 80,000 documents and 400,000 items from a legacy system, rebuilt the editor on Lexical, and designed the data model and public API.
Senior Full-Stack Developer
AB SEB
Mar 2024 - Jun 2025 (1 year 3 months)
Built a counterparty risk classification system for enterprise clients with 30 models, each with its own calculation steps and data inputs. Promoted to Senior in January 2025.
Full-Stack Developer
UAB Elitnet
Nov 2021 - Mar 2024 (2 years 4 months)
Built the alerts interface for a fraud detection platform used by international telecom companies, including alert views, drilldowns, and a rule builder. Worked fully remote with a Swiss client.
No-Code Developer
MB IdeaLink
Dec 2020 - Nov 2021 (11 months)
Delivered client projects with low-code and custom-code approaches, including third-party API integrations. Promoted to lead developer within six months, coordinating a small team.
Programming Intern
UAB Satalia Lithuania (Datadog)
Apr 2019 - Jun 2019 (2 months)
Developed internal tooling with React and Laravel, handling MySQL data and integrating external APIs.
Education
Degrees, certifications, and relevant coursework
Kaunas University of Technology
Master of Science, Cybersecurity
2022 - 2025
Pursued a Master of Science in Cybersecurity, completing the degree in 2025.
Kaunas University of Technology
Bachelor of Science, Software Engineering
2018 - 2022
Earned a Bachelor of Science in Software Engineering, graduating in 2022.
Tech stack
Software and tools used professionally
Availability
Location
LithuaniaAuthorized to work in
Salary expectations
Social media
Job categories
Skills
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