Dimitar Dulev

Led frontend development for a second-hand fashion P2P marketplace, collaborating closely with product on UI/UX decisions while also contributing to the Node.js API and admin backoffice.

• Implemented the majority of frontend flows in the app, owning core user-facing features end-to-end.
• Migrated the codebase from JavaScript to TypeScript with end-to-end Zod validation, dramatically reducing bug rates and improving developer confidence.
• Moved state management from Redux to React Query, enabling faster feature development across the team.
• Redesigned checkout into a streamlined single-page flow with Stripe integration and guest checkout, reducing drop-off points and improving conversion.
• Built the backoffice from scratch using Next.js and shadcn/ui, prioritizing great DX and team dev velocity.
• Took ownership of UI/UX design, delivering rapid clickable prototypes that replaced a costly external design contractor — cutting iteration cycles from weeks to days.

• React
• TypeScript
• Next.js
• Node.js
• shadcn/ui
• tRPC
• Prisma
• PostgreSQL
• AWS
• Stripe

Senior frontend engineer on a fertility tracking hybrid app with 2 million users and 200k+ community threads. Owned the dev-design collaboration. Worked closely with the designer to improve the design system and raise UX standards across the app. Worked across the Ionic/Capacitor frontend, Node.js community microservice, and internal backoffice.

• Led redesign of major app sections (News feed, Community, Calendar, My Fertility), measurably increasing community engagement.
• Replaced Redux with React Query + Jotai, simplifying state management and improving team velocity.
• Developed community forum microservice from scratch (Node.js/Koa/MongoDB/InversifyJS) with thread subscriptions, voting, and nested replies.
• Architected CI/CD pipeline with GitHub Actions for automated testing and app store deployment.
• Created internal backoffice (React/Material-UI) for marketing team to manage in-app advertising campaigns.
• Established frontend guidelines, REST API design standards, Sentry integration, and E2E testing.

• React
• TypeScript
• Ionic
• Capacitor
• Node.js
• MongoDB
• Jest
• Cypress
• AWS

Developed a cloud-based consent management platform for a major US healthcare insurance provider.

• Created React control panel and event-driven serverless backend.
• Managed AWS infrastructure; collaborated remotely with US-based team.

• React
• AWS Lambda
• Serverless

Contributed to a peer-to-peer science discovery platform built on Hyperledger Fabric.

• Designed and implemented smart contracts (Golang) and set up blockchain infrastructure with Docker.
• Developed the Express.js API layer.

• Hyperledger
• Golang
• Express.js
• Docker