Where the work happened. Three companies, seven years.

AI-First Development

Drive AI-first workflows with Claude Code — custom skills for planning, testing, code review, and live API testing — plus MCP integrations for Bitbucket, Jira, Oracle, and PostgreSQL across the full lifecycle.

E-Invoicing Compliance

Develop the French e-reporting (e-invoicing) solution within a microservice architecture.

Resilience

Built Kafka-based retry mechanisms with a scheduler across services, improving fault tolerance of asynchronous message processing.

AWS

Build and dev-test workflows across S3, Lambda, API Gateway, Amazon MQ, and Kafka.

SAP Partner Management Platform

B2B solution for SAP's partner ecosystem (Spring Boot, React, SAP UI5). Developed core modules for quarterly planning and reseller tracking, engineered KPI calculation and prediction over quarterly partner data, and added multi-currency support across service and presentation layers.

CI/CD & Quality

Built GitHub CI/CD pipelines with automated testing (JUnit, QUnit) and SonarQube quality gates; deployed on AWS EKS, EC2, and S3.

Internal AI Assistant (Onyx RAG)

Built EPAM's RAG assistant on Onyx, wiring in internal docs, knowledge bases, and comms channels; integrated corporate SSO and improved answer relevance via prompt engineering.

UKG Workforce

Shipped React and proprietary-Java features for a platform with millions of daily users — resource cloning across companies, per-employee multi-currency payroll, hardened API security via TDD, and an OpenAI skill-to-CV matcher.

PIFC (EU-Funded)

Built a Public Internal Financial Control platform mandated across all institutions of Bosnia and Herzegovina — risk registers, process maps, KPIs, trainings, and annual self-assessment reports.

Auth & Access

Implemented Keycloak SSO and JWT-based authentication with role-based access control across government applications.

MESPH (UNDP)

Extended Java EE/JSF/Hibernate modules supporting Montenegro's EU accession; added Word export and reworked the reporting engine.

Infrastructure Topology

Built an app modeling server → VM → container → application with mindmap visualization and JPQL/native-SQL filtering; containerized and deployed with Docker.