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Back end програміст
- City of residence:
- Dnipro
- Ready to work:
- Remote
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Andrii Zaichenko
Back-End Developer
■ [open contact info ](look above in the "contact info" section) ■ @Azay322 (Telegram)
SUMMARY
Results-driven Back-End Developer with 5+ years of experience designing and delivering scalable systems, RESTful
APIs, and cloud-native solutions. Proven track record of working directly with multinational clients as a key contributor in
cross-functional teams, consistently delivering high-quality, performance-optimized code. Deep expertise in distributed
architectures, third-party integrations, and multi-cloud environments (GCP & AWS). Actively leverages AI-assisted
development tools and agents to accelerate delivery, improve code quality, and solve complex engineering challenges
more efficiently.
SKILLS
Languages C#, JavaScript, TypeScript
Frameworks ASP.NET Core, Entity Framework Core, SignalR, Dapper, Autofac, XUnit
Cloud & Infra Google Cloud Platform (GCP), AWS, BigQuery, Pub/Sub, Kubernetes, Docker
Databases PostgreSQL, MSSQL
Services & APIs Auth0, SendGrid, Firebase, Slack API, GettyImages API, MessageBird, Zapier
Tools Git, Jira, Swagger, Postman, Redis, PuppeteerSharp, Grafana, DBeaver
English B2 (Upper-Intermediate)
EXPERIENCE
Back-End Developer Extrums (AdVon Commerce) 08/2023 – Present
Tech: ASP.NET Core, Dapper, PostgreSQL, GCP (BigQuery, Pub/Sub), Kubernetes, Docker, Auth0, Autofac, XUnit, PuppeteerSharp,
Slack API
• Designed system architecture and database structure for a high-throughput affiliate-commerce billing engine
• Built AI content-generation and web-scraping pipelines at scale
• Developed and optimized RESTful APIs across distributed microservices
• Implemented CPC and GMV rate calculation engines and automated invoice generation for multinational clients
• Built and maintained integrations with third-party services and external APIs
Back-End Developer VrealSoft 09/2021 – 08/2023
Tech: ASP.NET Core, Entity Framework Core, SignalR, MSSQL, AWS, Docker, SendGrid, MessageBird, Firebase, Zapier
• Built a full product from scratch on .NET 5, covering architecture, data modeling, and core business logic
• Designed and integrated multiple third-party services (SendGrid, MessageBird, Firebase, Zapier) into a unified platform
• Deployed and maintained cloud infrastructure on AWS, ensuring high availability and scalability
Software Engineer Absolutist Ltd. 11/2019 – 09/2021
Tech: JavaScript, TypeScript, ActionScript, SVN, Jenkins
• Transpiled Flash games to HTML5 via reverse engineering
• Optimized game performance on Android and iOS devices
• Adapted games for various mobile form factors
EDUCATION
Master's Degree in IT, System Analysis · 2014 – 2019
National Technical University «Dnipro Polytechnic»
Back-End Developer
■ [
SUMMARY
Results-driven Back-End Developer with 5+ years of experience designing and delivering scalable systems, RESTful
APIs, and cloud-native solutions. Proven track record of working directly with multinational clients as a key contributor in
cross-functional teams, consistently delivering high-quality, performance-optimized code. Deep expertise in distributed
architectures, third-party integrations, and multi-cloud environments (GCP & AWS). Actively leverages AI-assisted
development tools and agents to accelerate delivery, improve code quality, and solve complex engineering challenges
more efficiently.
SKILLS
Languages C#, JavaScript, TypeScript
Frameworks ASP.NET Core, Entity Framework Core, SignalR, Dapper, Autofac, XUnit
Cloud & Infra Google Cloud Platform (GCP), AWS, BigQuery, Pub/Sub, Kubernetes, Docker
Databases PostgreSQL, MSSQL
Services & APIs Auth0, SendGrid, Firebase, Slack API, GettyImages API, MessageBird, Zapier
Tools Git, Jira, Swagger, Postman, Redis, PuppeteerSharp, Grafana, DBeaver
English B2 (Upper-Intermediate)
EXPERIENCE
Back-End Developer Extrums (AdVon Commerce) 08/2023 – Present
Tech: ASP.NET Core, Dapper, PostgreSQL, GCP (BigQuery, Pub/Sub), Kubernetes, Docker, Auth0, Autofac, XUnit, PuppeteerSharp,
Slack API
• Designed system architecture and database structure for a high-throughput affiliate-commerce billing engine
• Built AI content-generation and web-scraping pipelines at scale
• Developed and optimized RESTful APIs across distributed microservices
• Implemented CPC and GMV rate calculation engines and automated invoice generation for multinational clients
• Built and maintained integrations with third-party services and external APIs
Back-End Developer VrealSoft 09/2021 – 08/2023
Tech: ASP.NET Core, Entity Framework Core, SignalR, MSSQL, AWS, Docker, SendGrid, MessageBird, Firebase, Zapier
• Built a full product from scratch on .NET 5, covering architecture, data modeling, and core business logic
• Designed and integrated multiple third-party services (SendGrid, MessageBird, Firebase, Zapier) into a unified platform
• Deployed and maintained cloud infrastructure on AWS, ensuring high availability and scalability
Software Engineer Absolutist Ltd. 11/2019 – 09/2021
Tech: JavaScript, TypeScript, ActionScript, SVN, Jenkins
• Transpiled Flash games to HTML5 via reverse engineering
• Optimized game performance on Android and iOS devices
• Adapted games for various mobile form factors
EDUCATION
Master's Degree in IT, System Analysis · 2014 – 2019
National Technical University «Dnipro Polytechnic»
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The candidate's resume is posted at https://www.work.ua/resumes/19045671/