Piotr Obolewicz
Senior Software EngineerAI Engineering
Warsaw, PolandRemote
I build Java and distributed backend systems for banking and public infrastructure — and, more recently, LLM systems built to hold up in production.
JavaDistributed systemsMicroservicesLLM integrationRAGEvaluation & guardrails
Experience
- LLM systemsBuilt an LLM-driven medical interview system end to end — guardrails, evaluation, retrieval, cost control.
- Commercial Bank of DubaiSME online banking built from scratch — full cycle, from architecture planning to the user interface.
- SantanderBank operations integrated across twenty-one microservices.
- ING HubsCredit-risk platform engineering.
- National Institute of TelecommunicationsBackend services behind Poland's national road tolling system.