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Driven by an insatiable curiosity and a relentless passion for innovation, I am a software engineer committed to staying at the forefront of the ever-evolving tech landscape. Equipped with the latest technologies and techniques, I thrive in fast-paced environments, always seeking to expand my knowledge and skills.…

Oleksandr Havrushkevych

Full Stack Developer, Back-End Developer, Front-End Developer, +2

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Driven by an insatiable curiosity and a relentless passion for innovation, I am a software engineer committed to staying at the forefront of the ever-evolving tech landscape. Equipped with the latest technologies and techniques, I thrive in fast-paced environments, always seeking to expand my knowledge and skills.…

Available to hire

Driven by an insatiable curiosity and a relentless passion for innovation, I am a software engineer committed to staying at the forefront of the ever-evolving tech landscape.

Equipped with the latest technologies and techniques, I thrive in fast-paced environments, always seeking to expand my knowledge and skills.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Russian

Intermediate

Ukrainian

Advanced

Work Experience

Software Engineer at TransferGo

March 1, 2026 - Present

Developed core logic for payment batches of up to 1,000 transactions, focusing on fault tolerance and data integrity. Implemented a state-check summing mechanism for Strong Customer Authentication (SCA) to secure payment confirmations. Built a custom .NET rate limiter using distributed storage, optimized API costs and protected against DDoS. Built a company-wide .NET knowledge base to standardize internal architectural patterns. Led Zendesk and Braze integrations to streamline customer support workflows. Implemented GDPR data deletion processes across Zendesk, Curity, and Braze.

Junior Software Engineer

January 1, 2025 - March 1, 2026

Designed the Sanctions SDD flow backend, automating high-risk industry identification via NACE/SIC codes. Built the multi-user invitation lifecycle, including automated background processes for invitation expiration and security checks. Implemented idempotency logic for booking endpoints to ensure reliability and prevent duplicate transactions under high load. Led GDPR data deletion processes across Zendesk, Curity, and Braze. Built Zendesk and Braze integrations to streamline customer support workflows.

Remote Junior Full-Stack Engineer

September 1, 2023 - December 31, 2024

Developed and maintained web applications using C#, .NET Core, ASP.NET Core, REST APIs, and frontend technologies. Integrated RabbitMQ, Angular/React, and RESTful services. Built and contributed to backend and frontend code in distributed environments.