TS

TsimaFei Sniazhkou

Available to hire

I am a passionate Java Back-End Developer with over 3 years of experience designing and building scalable microservices using Spring Boot, PostgreSQL, and Docker.

About

I am a passionate Java Back-End Developer with over 3 years of experience designing and building scalable microservices using Spring Boot, PostgreSQL, and Docker. I specialize in RESTful API development, test-driven development, and clean architecture principles. I am dedicated to delivering high-quality code, continuous improvement, and effective collaboration in remote and agile team environments. My experience extends to diagnosing legacy system bugs, developing automation bots, and contributing to blockchain infrastructure to optimize key processes and improve performance.

I enjoy streamlining workflows, reducing manual efforts, and enhancing system stability and uptime. My technical expertise encompasses a wide range of frameworks and tools such as Spring Security, Hibernate, Kubernetes, Git, Swagger, Postman, and messaging systems like Apache Kafka and RabbitMQ. I have hands-on experience in microservice architecture, CI/CD processes, and multiple databases including PostgreSQL, MySQL, MongoDB, and Redis.

  • 4 years' experience
  • Joined August 2025

Languages

  • EnglishIntermediate
  • BelarusianFluent
  • RussianFluent

Industry experience

  • Software & Internet
  • Education
  • Healthcare
  • Financial Services

More experts in Warsaw, Poland

Work experience· 4 roles

Freelance Developer – Java Back End DeveloperMay 2023 – Present · 3 yrs 7 mos

Developed RESTful APIs for clients, enabling seamless integration with multiple front-end applications and enhancing user experience. Diagnosed and resolved legacy system bugs, improving uptime and system stability by 10–15%. Built automation bots using Java/JavaScript/Chromium to streamline workflows, reducing manual effort by 75%. Contributed to deployment and maintenance of blockchain infrastructure, optimizing key processes and boosting performance.

Java Backend Developer · Amadei ClinicNov 2022 – Aug 2025 · 2 yrs 10 mos

Refactored internal systems to automate service processes, speeding up workflow by 25% and improving overall service efficiency. Designed and maintained a Java-based microservice architecture using Spring Framework, enhancing system modularity and scalability. Optimized database queries and introduced Redis caching, boosting data response by 15%. Created RESTful APIs and documentation for third-party service integrations. Implemented comprehensive test coverage using JUnit and Mockito, significantly improving code quality and reducing bugs by 20%.

Java Developer Training Program · EPAM SystemsAug 2022 – Aug 2025 · 3 yrs 1 mo

Contributed to the development of educational software for Java training. Designed practice tasks and solutions to improve learning outcomes for students. Participated in full software lifecycle: planning, development, testing, and deployment.

Java Developer (University Work)May 2022 – Aug 2025 · 3 yrs 4 mos

Education

Bachelor in Computer Engineering · Francisk Skorina Gomel State University2019 – 2022

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