Masih Jahangiri — Senior Full-Stack Engineer & Technical Leader

Experience

Founder & CTO Sep 2023 – Mar 2026

RadShim · Remote

Built a multi-tenant subscription SaaS platform from zero to 5,000+ paying subscribers, 100K+ transactions, and 15K+ concurrent sessions across 20 countries.
Designed full architecture: NestJS + GraphQL backend, Next.js frontend, PostgreSQL + Prisma, Apollo Client with cache persistence, typed GraphQL codegen, Radix UI + Tailwind.
Managed 100 servers for load balancing with near-zero downtime using Docker, Nginx, custom CI/CD, rsync deployments, and Prometheus/Grafana/Alertmanager monitoring.
Built a reseller platform that acquired 50 B2B resellers as the primary distribution channel. Entire codebase is open-source on GitHub.

Team Manager (Part-time advisory) Sep 2023 – Dec 2024

Cobl (formerly Thinkeo) · Paris, France · Remote

Promoted from Senior Full-Stack Developer within 10 months. Led the engineering team for an AI-powered document generation platform.
Engineering team and technical decisions directly contributed to the company's first $1M raise.
Continued as strategic technical advisor (DevOps, infra, security, backend, frontend) for 1+ year after transitioning out of day-to-day management.

Senior Full-Stack Developer & DevOps Engineer Dec 2022 – Sep 2023

Primary DevOps resource: owned CI/CD pipelines, Docker deployments, server provisioning, and monitoring for the AI document generation platform.
Built full-stack features using Node.js, React, TypeScript, and integrated infrastructure tooling.

Co-Founder & CEO Jun 2022 – Dec 2022

pelas.ir — Real Estate Platform · Remote

Raised $200K in funding, led a team of 15–20 employees, and acquired 4,000+ B2B customers for a property listing platform (comparable to Zillow/Realtor.com).
Promoted through three roles in under 2 years (Senior Frontend Lead → CTO → CEO). Full P&L ownership and team management.

Chief Technology Officer Dec 2021 – Jun 2022

Designed core architecture: Node.js backend, React frontend, PostgreSQL, Docker, and automated CI/CD. Introduced monitoring and structured hiring.

Senior Frontend Developer & Chapter Lead Dec 2020 – Dec 2021

Senior Frontend Developer & Chapter Lead Jan 2018 – Dec 2019

Goki · Sydney, Australia · Remote

Led frontend chapter across a 20–50 person org at a product company backed by Hostelworld (one of the world's largest hostel booking platforms).
In the first year, product team sales doubled. Recognized by founders as a standout contributor ("hero of the team").
Refactored codebase to follow clean code principles; worked with React, Redux, TypeScript across multiple teams.

Founder 2015 – Jan 2018

Clansell — Gaming Marketplace

Solo-founded a gaming marketplace. Achieved #1 Google ranking for the primary keyword, driving a 10x increase in sales through SEO.
Designed and built the full product stack: frontend, backend, payment integration, and customer support.

Open Source & Community

StackOverflow: Top 1% globally — 11,000+ reputation, 13M+ people reached. Top answer: "TypeScript exports is not defined" (679K views, 105+ upvotes). Multiple answers with 60–85+ upvotes across TypeScript and React.
GitHub: Open-source production NestJS + GraphQL API (100K+ transactions), Next.js frontend (5K+ users), Docker Postgres backup tools, fleet monitoring stack.
Community: Coordinator for React & React Native Society of Iran (Isfahan chapter, 2018–2023).