mah-tee-yah moon-yah-ko-vitch
🇪🇺 Zagreb (UTC+01:00)
mmunjako@gmail.com GitHub LinkedIn Esploro Apidex Book a call! matija.eu mmunjako@gmail.com
10 years building products end to end. APIs, backend, frontend, infra. Mostly in fintech and payments. Currently at DTR, working on payment infrastructure. Partner at Kodius. Building Esploro.app and Apidex.dev.
Built compliance logic for backend systems handling over $100M in transactions. Integrated third-party providers with a focus on reliability and failure handling. Used TypeScript, SQL, and AWS serverless. Worked with product, compliance teams, and external partners to ship safely in a regulated environment.
Hands-on CTO — coded, led teams, and owned architecture. Hired and managed engineers across multiple concurrent client projects. Set engineering standards and delivery processes. Primary technical contact for clients in the US, UK, Germany, and Australia. Grew the engineering team while keeping delivery consistent.
Led a team of engineers building backend and frontend features. Coded alongside the team using TypeScript, PostgreSQL, and React. Stack also included Python, Ruby, Java, and Keycloak. Mentored engineers, reviewed code, and worked with product to navigate changing priorities without dropping technical quality.
Built data pipelines and backend systems to support expansion into new markets. Translated regulatory requirements into system behavior with product and business teams. TDD-first environment, large Rails codebase, frequent releases. Used Ruby on Rails and TypeScript.
Ran large-scale data migrations across changing system boundaries. Designed event-driven pipelines for microservices workflows. Helped with roadmap planning and unblocking technical risks. Used Ruby and TypeScript.
Built full-stack web applications, often as tech lead on a project. Worked with Ruby, TypeScript, SQL, and React. Mentored junior engineers through code reviews and design discussions.