Senior Backend Engineer

I am a Senior Backend Engineer with 8+ years of production experience building scalable Java services and AI-integrated systems. My core focus is on Java, Spring Boot, and LLM application development, and I have worked extensively on high-throughput microservices that serve millions of daily requests.

I have designed and shipped backend systems for analytics, fintech, and marketplace products, with a strong emphasis on reliability, performance, and maintainability. I am comfortable working across the full backend stack, from REST APIs and event-driven architectures to PostgreSQL optimization, caching, and observability.

A major part of my recent work has involved integrating AI capabilities into customer-facing products. I have built chatbot backends using LangChain4j and OpenAI APIs, including structured tool-use patterns, token management, retry logic, and escalation workflows that improved operational efficiency.

I also have deep experience modernizing legacy systems and decomposing monoliths into microservices using Domain-Driven Design and clean architecture principles. In these projects, I focused on reducing coupling, improving team autonomy, and creating systems that can scale under production constraints.

Beyond implementation, I value engineering quality and team growth. I have built comprehensive automated test suites, set up CI/CD pipelines, improved observability with Prometheus, Grafana, ELK, and OpenTelemetry, and mentored junior developers through code reviews and system design discussions.

I am based in Romania and have worked in remote and on-site environments across international teams. I speak English and bring a collaborative, problem-solving mindset to backend engineering, distributed systems, and AI-enabled product development.