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Vadym Kolodiazhnyi

@vadymkolodiazhnyi

Python Software Engineer focused on high-performance APIs, microservices, and data pipelines using Python, PySpark, and Azure/GCP.

Ukraine

Message

What I'm looking for

I’m looking for a team where I can build and optimize Python services and data pipelines—improving performance, cost, and reliability—while working on cloud-native microservices and practical data security with strong engineering collaboration.

I’m a Python Software Engineer who automates workflows and optimizes system performance through clean, reliable backend services and data pipelines. I maintain and enhance a core product built with Python (Flask), where I improved response times and system throughput by 20% by identifying and resolving performance bottlenecks.

I also design solutions that reduce operational cost and speed up delivery—building a caching layer for sensitive customer data and optimizing API gateway usage to reduce paid request volume by 19% and cut operational costs by ~25%. Across projects, I’ve migrated monolith systems to Azure microservices, aligned security for sensitive medical data, reduced cloud costs by 17%, and refactored legacy codebases to boost execution speed 3x.

Experience

Work history, roles, and key accomplishments

Current

Python Software Engineer

Current

SpaceCrew Finance Company

Oct 2024 - Present (1 year 6 months)

Maintained and enhanced a Python/Flask core product, improving response times and increasing system throughput by 20%. Designed a caching layer for sensitive customer data and migrated inter-service communication from REST to RabbitMQ, reducing paid request volume by 19% and operational costs by ~25%.

Python 3 Flask Microsoft SQL Server Docker Compose RabbitMQ Caching Performance Tuning

Big Data Engineer

Vizient

Jun 2023 - Nov 2023 (5 months)

Migrated an on-premise monolith to Azure, split it into microservices, and aligned security controls for sensitive medical report data. Used Azure Data Factory, PySpark, and SQL Server to move jobs to Azure and reduce cloud costs by 17% while optimizing PySpark workloads.

Remote Apache Spark Pyspark Azure Data Factory SQL Server Cloud Migration Microservices Data Security Remote

Python Engineer

Blue Prism

Oct 2021 - May 2023 (1 year 7 months)

Built an automation framework that recorded customer activities and transformed data streams into robot-executable processes using Python, gRPC, and pandas. Refactored a legacy codebase, reducing technical debt and boosting execution speed by 3x.

Python 3 Pandas gRPC OpenCV Azure Docker Automation Framework Refactoring

Python software engineer

Ana Movie

Jul 2020 - Oct 2021 (1 year 3 months)

Developed a movie information system using Python 3, Django REST Framework (DRF), and Docker.
Optimized query performance for handling large datasets. Implemented a tree structure for quick movie
name suggestions, enhancing user experience. Used Pandas for fast ETL processes, enabling efficient
data processing, selection, and grouping.

Remote Remote Python Django Docker Docker Compose PostgreSQL Algorithms

Education

Degrees, certifications, and relevant coursework

Kharkiv National University of Radioelectronics

Master's Degree in Computer Science (Software Engineering), Computer Science (Software Engineering)

2025 -

Enrolled in a Master's program in Computer Science (Software Engineering) at Kharkiv National University of Radioelectronics, starting in 2025 with expected completion in 2027.