Sergey Radzishevskyi
Senior Software Engineer at Contra
Vancouver, British Columbia, Canada
Summary
🤩
Rockstar🎓
Top SchoolSergey Radzishevskyi is a Senior Software Engineer with 11 years of experience building reliable backend systems and production-facing APIs, currently strengthening payment infrastructure at Contra in Vancouver. He brings a full-stack perspective—TypeScript/Node.js, PHP and Elixir—shipped across startups and enterprise tools, and has contributed backend logic to the notable open-source Stoplight/prism project for OpenAPI mocking and validation. Sergey combines hands-on engineering with product-minded collaboration, having built search microservices on AWS, Stripe-based payments, and user-facing React apps. He’s pragmatic about technical debt, experienced in refactoring legacy systems for high availability, and comfortable explaining complex choices to non-technical stakeholders. A master’s-trained systems engineer, he prefers solving correctness and edge-case problems (e.g., HTTP mocking, 204 handling, special-character query parsing) that often hide in production.
11 years of coding experience
13 years of employment as a software developer
Master's degree, Computer System and Networks, Master's degree, Computer System and Networks at Sevastopol State Technical University
Russian, English, Ukrainian
Stackoverflow
1,356reputation
546kreached
31answers
4questions
amazon-s3
top-5%
Github Skills (26)
apim10
javascript10
validations10
api-design10
typescript10
validation10
mock-server10
api10
typescript-types10
mocking10
typescripts10
openapi10
json-schema9
http9
amazon-s39
Programming languages (9)
Github contributions (5)
stoplightio/prism
Apr 2021 - Nov 2021
Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:34 reviews, 46 commits, 23 PRs in 7 months
Contributions summary:Sergey primarily contributed to the back-end logic of the `prism` project, specifically focusing on HTTP mocking and validation. Their work involved implementing features to handle example responses when request validation fails, including the ability to return specific examples based on provided keys. They also addressed bugs and improved the handling of 204 (No Content) responses and fixed issues related to special characters in query parameters.
oasxapiapi-testingpostman-collectionmocking
radzserg/rs-db-seeder
Oct 2019 - Jan 2023
node test DB seeder
Contributions:70 commits, 16 PRs, 29 pushes in 3 years 3 months
testingnodejsseeder
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