# Senior Backend Engineer

Location RomaniaDesired Salary UnspecifiedWork preference Full TimeLinks Joined29 Jun 2026Field / Industry Software Engineering

* SharePreferences:Status: Actively lookingRelocation: NoNotice Period: ImmediateSkill Assessments:This user has not passed any tests yet

Languages:  English -

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[Overview](#overview)

## About Me

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.

## Skills

### [AWS](https://jobicy.com/talent/aws.md)[Kubernetes](https://jobicy.com/talent/kubernetes.md)[Java](https://jobicy.com/talent/java.md)[Docker](https://jobicy.com/talent/docker.md)[Terraform](https://jobicy.com/talent/terraform.md)[PostgreSQL](https://jobicy.com/talent/postgresql.md)[MySQL](https://jobicy.com/talent/mysql.md)[Mentoring](https://jobicy.com/talent/mentoring.md)[Microservices](https://jobicy.com/talent/microservices.md)[MongoDB](https://jobicy.com/talent/mongodb.md)[Redis](https://jobicy.com/talent/redis.md)[Grafana](https://jobicy.com/talent/grafana.md)[Spring Boot](https://jobicy.com/talent/spring-boot.md)[Hibernate](https://jobicy.com/talent/hibernate.md)[Spring MVC](https://jobicy.com/talent/spring-mvc.md)

## Education

Polytechnic University of the Philippines  Jun 2013 - Apr 2017  Bachelor's degree in Information Technology

Studied Information Technology in San Juan, Philippines.

## Experience

Senior Backend Engineer @ Andersen Lab  Nov 2023 - Apr 2026 Built a core analytics API service in Spring Boot 3 with full async support using CompletableFuture and virtual threads. Designed and shipped an AI chatbot backend using LangChain4j and OpenAI API. Implemented Kafka-based event streaming, migrated a legacy PHP reporting backend to Java/Spring Boot, led monolith decomposition into microservices, established observability infrastructure, and mentored junior developers.

Full Stack Developer @ Trixicon LTD  Sep 2019 - Nov 2023 Built Java/Spring Boot backend APIs for a fintech marketplace platform, including authentication, product catalog, order processing, payment reconciliation, and seller management. Designed PostgreSQL schema and optimized slow queries, integrated third-party payment and shipping APIs, and built automated test suites and CI/CD pipelines.

Junior Software Developer @ Accenture Philippines  Jul 2017 - Sep 2019 Implemented REST API endpoints in Java/Spring Boot and Node.js/Express. Wrote SQL queries for reporting, data validation jobs, and ETL scripts, and maintained unit tests and API contracts to support frontend integration and QA workflows.