Part-time Senior TypeScript Engineer (React + Express + tRPC) – Long-term SaaS

# Part-time Senior TypeScript Engineer (React + Express + tRPC) – Long-term SaaS ## About the Project I'm the founder of an established SaaS platform built over the past year. The application is live, actively used, and consists of approximately 81,500 lines of TypeScript across a modern full-stack architecture. The core platform is complete. I'm looking for an experienced full-stack TypeScript engineer to help finish the remaining features, improve the product, and become the long-term technical partner for ongoing development and maintenance. This is not an MVP or a short-term project. I'm looking for someone interested in building familiarity with an existing codebase and working together over the long term. ## Tech Stack - React 19 - TypeScript - Express 4 - tRPC 11 - Drizzle ORM - MySQL (TiDB Cloud) - Cloudflare R2 - Brevo - OpenAI & Manus Forge integrations ## Responsibilities - Build new features - Fix bugs and production issues - Improve and refactor existing code where appropriate - Optimise performance - Review and improve AI-generated code - Contribute to technical decisions and architecture ## Requirements - 4+ years of professional TypeScript experience - Strong React experience - Strong Node.js and Express experience - Experience working with SQL databases - Experience working with existing production codebases - Ability to work independently - Excellent written English communication - Clean, maintainable coding practices - Comfortable using Git and pull requests ## Nice to Have - tRPC - Drizzle ORM - AI API integrations - Cloudflare services - SaaS product experience ## Working Arrangement - Part-time (approximately 10–20 hours per week to start) - Flexible schedule - Fully remote - Long-term engagement preferred - Async communication ## Hiring Process 1. Short introductory video call 2. Paid trial task (8–10 hours) using the real codebase 3. Ongoing monthly retainer if we're a good fit ## To Apply Please include: - A brief introduction about yourself - Relevant React/TypeScript projects you've worked on - Your GitHub profile (if available) - **Your hourly rate** - Your availability (hours per week) - A few sentences describing your experience working with existing production codebases rather than building new projects from scratch