Java Backend Developer with 4+ years of experience in high-load systems and performance engineering within the financial sector. Experienced in building backend services using Java and Spring ecosystem, working with microservice architectures, observability stacks, and containerized environments. Strong background in system diagnostics, performance optimization, and distributed system stability. Actively developing modern backend systems for startup environments and building internal tools that integrate LLM APIs to automate real-world workflows. Regularly leverage AI-assisted development tools to accelerate feature implementation, improve debugging efficiency, and explore architectural solutions. Looking to contribute to a product-focused engineering team building scalable backend platforms.

Nikita Sipeykin

Java Backend Developer with 4+ years of experience in high-load systems and performance engineering within the financial sector. Experienced in building backend services using Java and Spring ecosystem, working with microservice architectures, observability stacks, and containerized environments. Strong background in system diagnostics, performance optimization, and distributed system stability. Actively developing modern backend systems for startup environments and building internal tools that integrate LLM APIs to automate real-world workflows. Regularly leverage AI-assisted development tools to accelerate feature implementation, improve debugging efficiency, and explore architectural solutions. Looking to contribute to a product-focused engineering team building scalable backend platforms.

Available to hire

Java Backend Developer with 4+ years of experience in high-load systems and performance engineering within the financial sector.
Experienced in building backend services using Java and Spring ecosystem, working with microservice architectures, observability stacks, and containerized environments. Strong background in system diagnostics, performance optimization, and distributed system stability.
Actively developing modern backend systems for startup environments and building internal tools that integrate LLM APIs to automate real-world workflows. Regularly leverage AI-assisted development tools to accelerate feature implementation, improve debugging efficiency, and explore architectural solutions.
Looking to contribute to a product-focused engineering team building scalable backend platforms.

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Experience Level

Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Work Experience

Backend Developer at Early-Stage Startup (Confidential)
January 1, 2024 - Present
Developed backend services for a microservice-based platform using Spring Boot; implemented geo-search with PostgreSQL + PostGIS; real-time match detection with Apache Kafka; integrated Matrix-based chat infrastructure for secure real-time communication; distributed caching with Redis; contributed to system design and backend architecture decisions.
Full Stack Developer at Telegram Bot & Admin Panel Project (Commercial)
June 1, 2024 - Present
Implemented Telegram bot backend and a React-based admin panel; developed complex business logic including multi-stage funnels and scheduled messaging; enabled dynamic content management; deployed within a Kubernetes cluster; set up CI/CD pipelines using GitHub Actions, Jenkins, and GitLab CI; added automated reminders and user analytics.
Back-End Developer at LTDI CI - Tec o / Vitte - Inno
January 1, 2026 - Present
Designed and implemented back-end and full-stack components; established CI/CD pipelines; built monitoring dashboards; containerized services with Kubernetes; integrated AI features via LLM APIs.
Back-End Developer at Personal Product Project
January 1, 2025 - Present
AI-powered job assistant backend in Java 21 with integration to LLM APIs (OpenAI, Anthropic); supported local LLM processing via Ollama; provided API and data persistence; deployed for local usage; built tooling for data processing and workflow management.
Game Developer at Personal Project
January 1, 2020 - Present
2D Adventure Game: implemented game logic and object-oriented patterns in pure Java (Swing).

Education

Bachelor's Degree at Moscow State University of Railway Engineering (MIIT)
January 11, 2030 - April 29, 2026
Java Developer Program at GeekBrains University
January 11, 2030 - April 29, 2026

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Professional Services, Media & Entertainment