I'm
Volodymyr Khrystian
About Me
Experienced Backend Developer with 10+ years of practical experience designing high-load microservices and scalable web architectures using PHP (Symfony, Laravel) and Node.js (NestJS, Express). Built systems in e-commerce, fintech, and automation domains. Strong in database optimization (MySQL, ClickHouse, MongoDB), API design, CI/CD, Git and Docker. Worked in cross-functional and international teams, frequently involved in code review, mentoring, and project planning. Delivered real-time systems, automated workflows, and high-availability platforms. Currently located in Bavaria, Germany with full EU work permit.
Looking for a Backend Developer or Fullstack (backend-focused) role in a team that values clean architecture, automation, and impactful software. Interested in challenging backend tasks, system design, API development, and solving performance problems. Open to working in international teams, startups or established companies, and willing to relocate within Germany or EU. Flexible on remote, hybrid, or on-site arrangements. Main priority: meaningful projects and strong technical collaboration.
Languages & Frameworks
PHP
10+ years
Symfony
4 years
Laravel
1 year
Yii
6 years
JavaScript / TypeScript
5 years
Node.js
5 years
NestJS
5 years
Express
1 year
Databases / Storages / Queues
MySQL
10+ years
PostgreSQL
2 years
MongoDB
4 years
ClickHouse
1 year
Elasticsearch
1 year
Redis
6+ years
RabbitMQ
8 years
Tools & Infrastructure
Git
10+ years
Docker / Docker Compose
6 years
AWS
4 years
Architecture
REST APIs
8 years
Microservices
5 years
GraphQL
2 years
Testing & DevOps
Test-Driven Development (TDD)
10 years
CI/CD pipelines
5 years
Linux
7 years
Frontend (used occasionally)
React
2 year
React Native
>6 months
Languages
German
B1
English
~ B2
Ukrainian
Native
Russian
Native
Professional Timeline
⏸ Career break
- Focused on job search.
- Learning English language.
- Upskilling and personal project.
- Learning new technologies and frameworks like Python, FastAPI, React Native, Expo.
🎓 VHS integration course — Lohr am Main — Germany
- VHS German language course B1
- VHS Living in Germany course
💼 Softum — Senior Backend Developer — Remote — E-commerce sector
- Built high-load microservices using PHP/Symfony and Node.js/NestJS for SMS/email marketing automation
- Developed a real-time reporting service with Node.js and ClickHouse — reduced report generation time significantly
- Designed microservices for microloan platform (PHP, Symfony)
- Participated in project planning and mentoring junior developers
💼 JBW Soft — Senior Fullstack Developer — Kyiv, Ukraine — E-commerce (essay writing service)
- Migrated a legacy monolith (PHP/Yii) to microservices (PHP/Symfony, Node.js) — improved deployment speed and system stability
- Built notification system and Telegram bot using NestJS and MongoDB to automate client interactions
- Created a real-time request processing system using React, NestJS, and Socket.IO
- Led planning, code reviews, and mentoring; created new API endpoints for internal and external services
💼 Finko Finance — Backend Developer — Dnipro, Ukraine — Fintech sector
- Worked on multiple fintech and ERP systems
- Integrated third-party financial services and optimized API response times
- Improved performance and handled incident development
💼 Noosphere Ventures — Backend Developer — Dnipro, Ukraine — E-commerce
- Created and maintained APIs for high-availability e-commerce systems
- Designed and implemented a data warehouse (DWH) that significantly improved access speeds for analysts
- Optimized database queries and implemented Redis caching
- Led system monitoring and 3rd-party integrations
💼 KTTSoft, Ukraine
- Worked as a PHP developer in outsourcing company.
- Developed and maintained web applications using PHP, MySQL, and JavaScript.
- Developed API for IOs mobile application using Yii framework.
- Developed Magento online store for client from USA (Shop4Seats).
💼 Worked in a different industry (not directly related to current career focus).
🎓 Dnipro National University, Ukraine
Master’s Degree in Engineering.
🛠️ Projects
Contact
Volodymyr Khrystian
Backend Developer
Lohr am Main, Bavaria, Germany