Дмитрий

Dmitriy Krimskiy
[open contact info](look above in the "contact info" section) (Mobile) Languages
Telegram @Dmitriy_Krimskiy Ukraine - native
English - B2
[open contact info](look above in the "contact info" section)
Russian - native
Ukraine

Java Software Engineer
Java Software Developer with over 5 years of enterprise development experience at international
companies, collaborating closely with colleagues across the globe. I am proficient in designing, developing,
testing, and maintaining software systems using cutting-edge development tools. I possess a strong ability to
work as part of a productive Scrum team, delivering high-quality solutions in fast-paced environments.

SKILLS
Java, Spring, Apache Kafka, REST, SQL, Jenkins, JPA-Hibernate, Microservices, Docker, Junit, Mockito,
Swagger, PostgreSQL, Liquibase, AWS, Maven, Gradle, Gitlab CI/CD, K8s (Kubernetes), ELK Stack
(Kibana, Elasticsearch)

PROFESSIONAL EXPERIENCE

Deutsche Telekom
Java Software Engineer
April 2020 – January 2025 (4 years 10 months)
Worked on a project where our team was responsible for developing a backend API system from scratch. I
contributed to nearly every stage of the development cycle—from designing the system architecture to deploying it
in production. While primarily focused on coding, I also created new diagrams and explored potential architectural
solutions. Actively participated in discussions about new business features, providing technical insights on various
issues.

Responsibilities:
Feature Development: Implemented high-impact features aligned with stakeholder requests, focusing on
optimized data handling to support large-scale operations. Owned the full development lifecycle—from drafting
technical specifications and designing system architecture to production deployment.
Backend API Development: Led the design and implementation of a scalable backend API system, including
coding, testing, and deploying microservices. Designed robust data models and set up CI/CD pipelines,
optimizing the application for performance and scalability.
Code Reviews & Quality Assurance: Conducted regular code reviews, ensuring adherence to best practices.
Mentored junior developers to elevate overall code quality and maintainability.
Production Support & Release Management: Collaborated with DevOps to streamline CI/CD pipelines,
minimizing downtime during releases. Efficiently managed production issues and incident responses.
Architectural Design & Optimization: Participated in system architecture discussions, contributing to the design
of microservices and distributed systems. Suggested improvements to enhance system scalability, resilience,
and performance.
Workflow Optimization: Implemented new processes for sprint planning and task prioritization, boosting team
efficiency and communication.

Achievements:
Improved System Performance: Enhanced overall system performance through architectural optimization and
code improvements.
Enhanced Code Quality: Established a consistent and thorough code review process, resulting in better
maintainability and fewer bugs.
Streamlined Deployment: Reduced deployment time and shortened production rollout durations with CI/CD
automation, minimizing downtime.
Better Team Collaboration: Introduced workflow improvements that increased collaboration and reduced
project bottlenecks, leading to smoother project delivery.
Positive Stakeholder Feedback: Delivered reliable and impactful features that met business needs, earning
positive feedback from stakeholders for consistency and quality.