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TALENT-77612

Harun
Backend Developer
Senior
Turkey
Professional Summary
Candidate is a Senior Backend Engineer with over 7 years of experience specializing in scalable backend systems, microservices architecture, and event-driven communication across industries including industrial automation, pharmaceuticals, software development, and information technology. Skilled in designing high-performance distributed systems using messaging queues such as RabbitMQ, Kafka, and NATS, with a strong command of Node.js, TypeScript, PostgreSQL, MongoDB, and Redis. Demonstrated expertise in decomposing monolithic applications into modular microservices, implementing service discovery, and optimizing system reliability with outbox/inbox and retry patterns. Proficient in developing and maintaining REST APIs, building CI/CD pipelines, and introducing standardized design and development practices. Experienced in NLP-driven chatbot development with Rasa and real-time system integration using WebSocket and event buses. Adept at mentoring engineers, leading backend architecture improvements, and delivering robust backend solutions for mission-critical systems, including autonomous robotics platforms and supply chain infrastructure.
Video of Talent
Portfolio
Education
Firat University / Faculty of Technology, Software Engineer
2011 - 2016
βCertifications and Trainings
Experience
Senior Backend Engineer
Industry: Industrial Automation
Oct 2024 β Present
β’ Designing and implementing event-driven dynamic service discovery using NATS KV store.
β’ Building in-memory queue system for NATS message retries.
β’ Developing event-bus module with NATS and WebSocket for real-time frontend and IoT updates.
β’ Creating REST-based map service for generating and managing map data.
β’ Implementing centralized config service for scalable device and settings management.
β’ Establishing code standards, branching strategies, and review policies.
Lead Full-stack Engineer
Industry: Software Development
Sep 2023 β Oct 2023
β’ Led maintenance and enhancements of Volt/VAR automation system.
β’ Implemented proxy pattern in service discovery to resolve connection issues.
Senior Backend Engineer
Industry: Pharmaceutical Manufacturing
May 2024 β Jul 2024
β’ Completed migration to internal order service module.
β’ Migrated open-source npm packages to internal packages for improved maintainability.
Senior Backend Engineer
Industry: Technology, Information and Internet
Sep 2019 β Sep 2023
β’ Designed hybrid distributed system architecture with saga, outbox, and inbox patterns.
β’ Architected secure and resilient queue-based messaging system with retry logic.
β’ Developed distributed caching layer to improve inter-microservice performance.
β’ Engineered versioning and CI/CD pipeline for internal npm packages.
β’ Led migration from HapiJs to NestJs for scalability and maintainability.
β’ Documented and standardized design patterns and business workflows.
β’ Mentored junior engineers in DDD and event-driven architecture.
β’ Integrated key services such as SAP purchase orders and e-waybill.
β’ Developed critical REST APIs for inventory, supply chain, and product transfer.
β’ Created robust unit and integration tests using Jest.
Full-stack Engineer
Industry: Information Technology & Services
Apr 2018 β Sep 2019
β’ Developed AI-powered chatbot with Rasa NLP for psychological diagnostics.
β’ Built admin panels for public transit and traffic data visualization.
β’ Engineered computer vision libraries across multiple programming languages.
β’ Designed plugin for real-time IoT event streaming to Thingworx platform.



