Александр

Oleksandr Kulakov
Senior Java Developer
Phone [open contact info](look above in the "contact info" section) E-mail
[open contact info](look above in the "contact info" section)
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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.

Links

• [open contact info](look above in the "contact info" section)

Skills

Java Bamboo
Angular TypeScript
Spring Hibernate
Kubernetes Helm
AWS(EC2, S3, RDS, EKS, ECS) Linux
Prometheus Grafana
Jenkins PostgreSQL
Docker JUnit
Mockito GraphQl
MySQL Redis
Kafka Maven
Git ELK

Professional Experience

Aug 2024 - Senior Full Stack Developer
Current Accenture
• 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.

Jan 2024 - Aug Java Developer
2024 Freelance (Self-employed)
• 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.

Aug 2023 - Jan Senior Software Engineer
2024 Windmill Digital, Lisbon
• 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.

Jul 2021 - Mar Middle Java Developer
2023 EPAM Systems
• 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.

Dec 2020 - Jul Middle Java Developer
2021 GlobalLogic, Kharkiv
• 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.

Aug 2020 - Java Software Engineer
Dec 2020 proarea.com, Kharkiv
• 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.

Feb 2019 - Jul Java Software Engineer
2020 Sednor Holdings Limited, Kharkiv
• 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

Jan 2016 - Jan Bachelor's Degree: Computer Engineering
2020 Kharkiv National University of Radio Electronics - Kharkiv

Languages

Ukrainian English

Native or Bilingual Full Professional

Portuguese

Elementary