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VLADYSLAV PAVLISHCHUK
Senior Python Engineer
@ [open contact info](look above in the "contact info" section) Ukraine, Chernivtsi

EXPERIENCE SUMMARY
Senior Python Engineer - MobiDev Senior Python Engineer with 6+ years of
experience building production backend
MobiDev services, REST APIs, data pipelines,
10/2022 - 03/2026 Chernivtsi, Ukraine integrations, and AI-driven applications
implemented in production systems.
• Designed and implemented a Snowflake-based big data processing
Participated in 10+ projects across AI,
system from scratch, using optimized SQL for complex aggregation,
sports, services, and banking. Skilled in
analytics, and reliable data delivery.
Python, FastAPI, Django, SQLAlchemy,
• Implemented AI-driven backend applications in production systems,
PostgreSQL, Redis, Snowflake, Docker,
integrating web scraping, Milvus vector search, and OpenAI API for
performance optimization, and refactoring.
personalized recommendations.
• Worked with Mapbox for geocoding, reverse geocoding, coordinate
processing, and geospatial data workflows relevant to map-based KEY ACHIEVEMENTS
services.
• Integrated app-to-PSTN calling with third-party services; improved
communication reliability and production stability by resolving Geospatial / ATAK Integration
defects. Built a Signal-to-ATAK project that
• Refactored and modularized a complex legacy codebase, improving validates coordinates, formats CoT
architecture, maintainability, clean-code practices, and developer events, and delivers map updates
productivity. through TAK infrastructure.
github.com/kaaaama/signal_to_atak
Ruby on Rails Engineer
MobiDev Performance Optimization
08/2019 - 10/2022 Chernivtsi, Ukraine Improved performance by 25% through
caching, SQL optimization, and query
• Boosted performance for ~1500 concurrent users through effective
tuning.
caching, SQL optimization, and query tuning.
• Improved security controls, helping the system successfully pass
external security audits and better protect sensitive data. Codebase Optimization
• Created production and staging infrastructure from scratch and
implemented CI/CD with GitLab CI, collaborating with DevOps for Reduced codebase size by 15% with
strategic refactoring and modularization.
stable releases.
• Refactored and upgraded GraphQL architecture, restructuring
schema and resolver logic to improve performance,
frontend-backend integration, and stability. LANGUAGES

EDUCATION English
Upper-Intermediate

Computer Engineering
Yuriy Fedkovych Chernivtsi National University
SKILLS
2019 Chernivtsi, Ukraine
• Master's Degree, with honors
Python FastAPI Django

DRF REST API SQLAlchemy

PostgreSQL SQL Optimization

Snowflake Redis Celery

RabbitMQ Docker Kubernetes

GitLab CI GraphQL LangChain

Mapbox Geospatial Data Selenium

Ruby Rails