Kostiantyn Denysov

Leading release management and developer experience for a large, globally distributed engineering organization.

• Leading and coaching a team of release managers and engineers, building a high-trust, high-ownership culture
• Owning the end-to-end release process, balancing delivery speed with stability and compliance
• Setting the vision and roadmap for developer platform and release tooling, replacing manual steps with automated, self-service workflows
• Leading architecture and technical design of new platform services
• Running a blameless incident review practice that turns lessons learned into lasting improvements

Partnering with engineering leadership and product teams to help everyone ship faster and safer.

Delivered scalable, event-driven services using .NET, MongoDB and Azure.

• Built critical features with a focus on maintainability and performance

Led architecture and delivery of internal tools and data pipelines for early-stage startups.

• Delivered all projects as scoped

Led high-impact initiatives and mentored engineers to drive scalable backend architecture.

• Refactored application processing and introduced permission-based access, increasing application volume by 15%
• Delivered a gRPC, Docker and Kubernetes microservices architecture, boosting system performance by 25%
• Led cross-functional releases with a 95% on-time delivery rate
• Optimized critical database queries, achieving up to 1000x performance gains

Developed scalable backend services primarily in TypeScript.

• Designed gRPC APIs between backend systems, improving inter-service communication efficiency by 50%
• Optimized critical database operations, achieving up to 1000x faster query execution

Built core services for copyright protection of images.

• Developed image comparison algorithms, significantly improving match accuracy
• Automated data analysis workflows, reducing manual overhead by 50%
• Established a testing culture, cutting production bugs by 60%

Delivered a white-label fintech solution for BNL and led the migration to microservices.

• Migrated infrastructure to bare metal for performance and cost gains
• Integrated with EU financial systems and promoted high code quality standards

Launched a multichannel bill payment platform for small businesses on Node.js and MySQL microservices.

• Integrated ACH and Payoneer to extend payment capabilities
• Designed secure RESTful APIs and performance-tuned backend processes

Developed smart search and recommendation features for personalized travel bookings.

• Built web applications with Angular, React and TypeScript
• Designed RESTful APIs with Node.js and Express on MySQL and MongoDB

Short consulting engagements in e-commerce and data privacy.

• Built backend systems and REST APIs for a ticket reselling platform
• Built GDPR-aligned personal data search for the Prefender project

Migrated the CVO portal from Angular to React and built a real-time location and analytics platform.

• Full-stack development with Node.js, Express, MySQL, PostgreSQL and MongoDB