Bogdan Melnychuk

As a Lead Engineer, supported the company in reaching product-market fit and onboarding initial clients. In a very dynamic setup with a small team, it was about making conscious tradeoffs between Speed and Quality, Performance vs. Scalability, User Requirements vs. Technical Feasibility. Primary was involved in high-level architecture, AWS infrastructure, backend development. Tech Stack: typescript, AWS, react, microservices, graphql, serverless

- Joined as one of the first developers, growing the team to 12 people - Laid out the foundation of a loosely coupled, event-driven architecture using DDD, TypeScript, and AWS as infrastructure that allowed the company to onboard 4 major clients in the first 1 year - Established best practices like CI/CD, testing, and coding patterns, which allowed up to 15 releases per day - Improved the performance up to 10 times by utilizing AWS infrastructure in a better way

- Brokedown large monolith system into 4 loosely coupled microservices by applying DDD and aligning software with business - Defined success metrics for new features to measure the impact on customers - Designed and developed the API to abstract the communication to 15 different third-party services using Java and SpringBoot - Build and shipped cross-platform native mobile application with doubled conversions using React Native Java, SprintBoot, AWS, React