Available to hire
I’m Rufat Babayev, a Backend Engineer focused on building scalable REST APIs for large-scale European platforms. I design and implement microservices with Java and Spring Boot, and deploy them with Docker and Kubernetes, while upholding strong CI/CD practices to improve reliability.
I enjoy optimizing deployment pipelines, collaborating with cross-functional teams, and delivering robust backend integrations. I bring hands-on experience with EU systems, microservices, and test-driven development, and I am fluent in multiple languages and frameworks.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Language
French
Fluent
Azerbaijani
Fluent
English
Fluent
Russian
Advanced
Turkish
Intermediate
Work Experience
Lead Backend Engineer at eu-LISA
December 1, 2024 - PresentLed backend initiatives for the European Biometric Matching System, improving platform stability by 12% and onboarding time by 10% through backend feature delivery. Strengthened test coverage and CI/CD reliability across the full stack, reducing deployment issues and regressions. Researched and prototyped backend integrations with decentralized technologies to assess production feasibility. Collaborated with cross-functional teams to optimize API performance and ensure seamless system integration.
Back End Engineer at Fedasil National Reception Management System
November 1, 2023 - December 1, 2024Designed and implemented scalable REST APIs with Java (Spring Boot) to support administrative and reception workflows. Containerized and deployed microservices using Docker and Kubernetes from staging to production. Ensured code quality with unit and integration tests (JUnit, Mockito), achieving high reliability. Participated in Agile ceremonies and maintained technical documentation for continuous delivery.
Back End Developer at OL TB Multi Banking Core Platform
October 1, 2022 - November 1, 2023Refactored core Java backend logic to boost system performance (+15%) and built scalable REST APIs to meet business needs. Led backend development and ensured dedicated delivery support within a shared banking platform. Implemented a robust test suite (JUnit, Mockito) achieving >80% coverage, reducing production bugs. Streamlined CI/CD and deployment processes using Maven, SoapUI, Linux shell, and PuTTY, improving speed and consistency.
Backend Engineer at EU-LISA / Fedasil - European Biometric Matching System
November 1, 2023 - December 31, 2024Designed scalable REST APIs with Java (Spring Boot). Deployed microservices using Docker/Kubernetes; improved reliability. Strengthened CI/CD coverage; reduced deployment issues and regressions. Delivered backend integrations for large-scale European systems using REST APIs, Docker, Kubernetes.
Backend Engineer at National Reception Management System
December 1, 2024 - PresentDelivered backend features with Java and Spring Boot; improved onboarding time by delivering backend features using Java and Spring Boot. Improved platform stability and reliability; designed REST APIs and integrated with Docker/Kubernetes; continued CI/CD improvements.
Education
Bachelor of Law & Criminology at Université libre de Bruxelles
January 1, 2019 - January 1, 2022Bachelor of Computing Science at ISFCE
January 1, 2022 - January 1, 2025Full Stack Web3 Solidity Bootcamp at Metana
March 1, 2025 - September 1, 2025Bachelor of Computer Science at Université libre de Bruxelles
January 1, 2020 - January 1, 2023Qualifications
Bachelor of Law & Criminology
January 11, 2030 - December 15, 2025Oracle Certified Associate — Java SE 8 Programmer
January 11, 2030 - December 15, 2025CI/CD Certification
January 11, 2030 - December 15, 2025Industry Experience
Software & Internet, Professional Services, Government, Financial Services, Other
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Hire a Full Stack Developer
We have the best full stack developer experts on Twine. Hire a full stack developer in Brussels today.