About Kirill
Full-stack engineer with a background in .NET and React, focused on
fintech and developer tooling. I build production-grade systems not prototypes.
Recent work: rehooks (rehooks.app) — a webhook relay platform for
fintech teams. ASP.NET Core API handling HMAC validation, event
queuing (1,000 req/min), exponential backoff delivery, 90-day
history, and AI-powered analytics via GPT-4o mini. React dashboard
with real-time SSE streaming and event replay.
Stack I work with:
- Backend: ASP.NET Core, C#, REST APIs, Entity Framework
- Frontend: React, TypeScript
- Infra: webhook integrations, Stripe, payment APIs
- Other: Node.js, MongoDB, PostgreSQL
I understand the fintech domain at a practical level — PSP
integrations, payment flows, fraud signals, and partner
coordination. This means less back-and-forth on domain context
and faster delivery.
Based in Riga, Latvia (UTC+3). Available for both project-based
and ongoing engagement.
Russian
Native or bilingual
Ukrainian
Native or bilingual
Czech
Fluent
English
Fluent
Can work on-site
Riga (up to 50km)
Experience
- SEBES Technology:Project ManagerApril 2025 - Today (1 year and 2 months)Riga, LatviaSEBES TECHNOLOGY of ers cutting-edge payment solutions, seamless integration, and expert business support.• • Orchestrated end-to-end merchant onboarding process, reducing integration time and ensuring seamless go-live for new clients• • Developed custom Slack bot from scratch based on finance department requirements, automating operational workflows and improving internal efficiency• • Maintained strategic partnerships with acquiring banks to enhance transaction processing stability and minimize payment disruptions
- IDEA StatiCa:Software Development EngineerFebruary 2023 - May 2025 (2 years and 3 months)Brno, Czechia• • At this job, I learnt my basic skills, such as organising work in the SCRUM system, parallel programming, understanding OOP to produce a quality product, covering functionality with tests, presenting my work in front of people and understanding and communicating with the customer.• • Developed software using the MVVM pattern with WPF and .NET Core.
- ALVAO:Q&A TesterAugust 2022 - January 2023 (5 months)Brno, Czechia• • Conducted manual testing using MSSQL and wrote unit tests in C# using NUnit and xUnit.• • Learned effective communication with developers and IT professionals.
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Education
- B.S.European University2026B.S.