Іван

Ivan Parkhomchuk
Zhytomyr, Zhytomyrska oblast, Ukraine [open contact info](look above in the "contact info" section) [open contact info](look above in the "contact info" section) in/ivan-parkhomchuk-012885270

SUMMARY
As a Middle Backend Developer with over 4 years of commercial experience in PHP (Laravel) and Node.js, I have solid hands-on expertise in
designing clean architecture, building REST and GraphQL APIs, and working with both relational and NoSQL databases.
My experience spans the full backend lifecycle - from implementing business logic and integrating third-party services to maintaining production
systems and setting up Docker environments. I focus on writing maintainable, well-structured code that solves real business problems and meets
production standards.

EXPERIENCE
Middle Backend Developer
X6Sense March 2026 - Present
• Backend & AI Architecture: Engineered scalable NestJS microservices and LLM orchestrations across 2 B2B platforms, connecting dynamic multi-
agent debate frameworks.
• Media Pipelines & Moderation: Built automated ingestion and content-slicing pipelines to parse and process static images, videos, and landing
page assets, accelerating content-to-AI delivery speed by ~40%.
• Python/ML Exposure: Handled basic integrations with Python-based ML scripts and LLM APIs, enabling smooth data communication between AI
models and backend services for 100% of pipeline requests.
• Conversational Platform: Integrated key backend engines for interactive chatbot ecosystems, enabling instant retrieval of AI-processed data for
1,000+ daily active user interactions.
• Cross-Functional Ownership: Collaborated closely with a team of ML and data engineers to connect backend infrastructure with machine learning
pipelines, maintaining 99.9% API stability.
Backend developer
Olimp Digital March 2022 - Present, Zhytomyr, Ukraine
• Architecture & Delivery: Led backend design and production delivery for 3 high-traffic systems (E-commerce, Car-sharing, Casino affiliates)
using PHP (Laravel), Node.js (Express/NestJS), and RabbitMQ microservices.
• DevOps & Infrastructure: Streamlined deployment workflows via Docker, CI/CD pipelines, and AWS cloud infrastructure, optimizing release
cycles.
• Quality & AI Workflows: Developed comprehensive Unit and Feature test suites to cover core business logic, leveraging Claude Code to speed up
feature delivery and debugging workflows by 30%.
• Cost & Performance Optimization: Partnered with DevOps to optimize PostgreSQL memory and DB queries, successfully reducing infrastructure
costs by ~20% and boosting data sync speed by 35%.
• Leadership & Mentorship: Mentored 3+ junior/trainee developers through code reviews and task management, enhancing overall code quality
and reducing onboarding time.

EDUCATION
Bachelor's degree, Computer Software Engineering
Zhytomyr Polytechnic State University • Zhytomyr, Ukraine • 2025

SKILLS
Technologies: - Back-End: PHP (Laravel), Node.js (Nest.js, Express.js), Python
- Front-End (basic): Vue, React, Angular, HTML, CSS, JS
- Databases: PostgreSQL, MySQL, MongoDB
- Tools: Docker, CI/CD Pipeline, RabbitMQ, Claude Code
- API: RestAPI, GraphQL, gRPC
- Cloud: AWS, GCP
Computer Science: - OOP, DDD, TDD, SDD
- Algorithms, data structures
- Monolithic/distributed environments
- Unit/integration testing, basic automation testing
Languages: English, Ukrainian, Russian