Oleksandr Kulakov
Senior Java Developer
Lisbon
Summary
Experienced Senior Java Developer with 6 years of hands-on experience in designing, developing, and implementing high-performance Java applications. Proficient in building scalable solutions using modern frameworks and cloud infrastructure. Strong problem-solver with excellent communication skills, and a collaborative team player with a passion for continuous learning and innovation. Adept at mentoring and leading teams in fast-paced environments.
Overview
6
6
years of professional experience
4
4
years of post-secondary education
3
3
Languages
Work History
Senior Full Stack Developer
Accenture
08.2024 - Current
- Contributed to the development and optimization of a web application.
- Integrated backend functionalities to ensure seamless client-server interactions.
- Collaborated with cross-functional teams to implement both frontend and backend enhancements, contributing to product stability and efficiency.
- Managed CI/CD processes to support consistent releases and effective deployment across AWS infrastructure.
Java Developer
Freelance (Self-employed)
01.2024 - 08.2024
- Provided ongoing support and development for tasks from multiple clients, ensuring timely and reliable solutions.
- Implemented custom requirements and features as per individual client needs, addressing specific project challenges.
- Maintained communication with clients to ensure project alignment and satisfaction.
Senior Software Engineer
Windmill Digital
08.2023 - 01.2024
- Participated in a large-scale fintech project, working on backend services to support high-volume data processing.
- Implemented real-time data streaming, enhancing the responsiveness of the application.
- Conducted comprehensive testing to ensure code quality and minimize deployment issues.
- Documented processes and workflows, facilitating knowledge sharing within the team.
Middle Java Developer
EPAM Systems
07.2021 - 03.2023
- Worked on fintech projects utilizing cloud technologies, primarily based on AWS, to ensure secure and scalable architecture.
- Designed and implemented RESTful APIs for microservices, supporting efficient data exchange and improved scalability.
- Conducted Unit and Integration testing to verify new features and enhancements, improving the quality and stability of the codebase.
- Optimized and refactored algorithms to enhance system performance, with a focus on reducing processing time.
- Collaborated with DevOps to design and improve Jenkins pipelines, enabling faster and more reliable deployments.
- Engaged in regular client meetings to present feature updates and discuss new requirements, ensuring alignment with project goals.
Middle Java Developer
GlobalLogic
12.2020 - 07.2021
- Contributed to a large-scale telecommunications project, primarily focusing on deployment and integration using Helm and Kubernetes.
- Played a significant role in various development and DevOps activities, assisting in both implementation and troubleshooting.
- Mentored two junior developers, supporting their professional growth and enhancing team productivity.
- Refactored legacy code, implemented new features, and executed testing using Unit, Integration, and Spring Contract tests.
- Enhanced system monitoring by deploying Prometheus and Grafana, and wrote scripts to display application metrics.
- Provided support to the release team, troubleshooting and fixing issues, and wrote comprehensive client and test documentation.
Java Software Engineer
proarea.com
08.2020 - 12.2020
- Served as a backend developer for a mobile application designed to assist individuals with physical disabilities.
- Implemented database structures and coordinated with mapping functionalities using PostgreSQL plugins for efficient spatial data handling.
- Developed and tested new features to enhance application functionality, ensuring high performance and reliability.
- Conducted Unit testing to validate code functionality and mitigate bugs before deployment.
- Key technologies used: Spring Framework, Mockito, PostgreSQL, JUnit, Hibernate.
Java Software Engineer
Sednor Holdings Limited
02.2019 - 07.2020
- Acted as the primary developer on a web and mobile platform for a U.S.-based flower trading application, focused on sales and purchase transactions.
- Implemented a full-text search feature utilizing Elasticsearch, integrated with Kibana and Logstash for data analysis, which improved search functionality significantly.
- Refactored legacy code to improve maintainability and efficiency, addressing memory leaks and enhancing overall performance.
- Deployed applications manually to test servers, conducting thorough QA and performance testing.
- Regularly communicated with clients to discuss new features and ensure that project development aligned with business objectives.
Education
Bachelor's Degree - Computer Engineering
Kharkiv National University of Radio Electronics
01.2016 - 01.2020
Skills
Java
Bamboo
Angular
TypeScript
Spring
Hibernate
Kubernetes
Helm
ELK
Linux
Prometheus
Grafana
undefinedTimeline
Senior Full Stack Developer
Accenture
08.2024 - Current
Java Developer
Freelance (Self-employed)
01.2024 - 08.2024
Senior Software Engineer
Windmill Digital
08.2023 - 01.2024
Middle Java Developer
EPAM Systems
07.2021 - 03.2023
Middle Java Developer
GlobalLogic
12.2020 - 07.2021
Java Software Engineer
proarea.com
08.2020 - 12.2020
Java Software Engineer
Sednor Holdings Limited
02.2019 - 07.2020
Bachelor's Degree - Computer Engineering
Kharkiv National University of Radio Electronics
01.2016 - 01.2020
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