Masih Jahangiri

Senior Software Engineer · Full-Stack & Platform Engineering

Senior Full-stack and platform engineer with 12+ years of experience building and operating production systems end-to-end. Most recently ran a globally distributed platform — 100 nodes across 20 countries, 5,000+ paying subscribers, 100K+ transactions. Previous experience spans CTO of a 15-person engineering team, senior engineer at an AI startup ($1M fundraise), and senior engineer at a Hostelworld-backed product company (2× revenue growth). Comfortable across the full stack (TypeScript, React, Node.js, PostgreSQL, Docker, Kubernetes, AWS) from architecture through deployment and monitoring.

Experience

Senior Software Engineer & Founder

Radshim

  • Built, shipped, and operated a globally distributed subscription platform end-to-end as the sole engineer — architecture, infrastructure, product, payments, and customer support.
  • Designed and ran a 100-node server fleet across 20 countries on Linux — provisioning, load balancing, health checking, automated failover, zero-downtime deployments, and production observability (Prometheus, Grafana, Alertmanager).
  • Grew to 5,000+ paying subscribers and 100K+ transactions across 20 countries, sustaining 15K+ concurrent sessions on a 100-node fleet — single operator throughout
  • Developed the full application stack: NestJS + GraphQL + PostgreSQL backend; Next.js + React frontend.
  • Full codebase published as open-source on GitHub. Platform paused in 2026 due to regional internet restrictions.

Senior Software Engineer

Cobl (formerly Thinkeo) · Paris, France · Remote

  • Senior engineer at an AI document generation startup. Owned features end-to-end across product, platform, and the AI pipeline. Work directly supported the company's first $1M raise.
  • Built and shipped core product features using Node.js, React, and TypeScript — from API design to production-ready user interfaces.
  • Owned CI/CD pipelines, containerized deployments (Docker), and AWS cloud infrastructure — improved deployment reliability and developer velocity.
  • Mentored engineers across frontend and backend; contributed to system design decisions and raised the bar on DevOps practices for the team.

CTO & Technical Co-founder

Pelas

  • Co-founded a real estate SaaS platform for the agency market and led engineering as CTO. Owned architecture, infrastructure, hiring, and delivery for a 15-person team across frontend, backend, and infra.
  • Designed multi-tenant SaaS architecture serving 4,000+ B2B customers (real estate agencies and agents).
  • Built CI/CD from scratch: Docker containerization, automated testing, deployment pipelines, production monitoring.
  • Established coding standards, ran architecture reviews, and coordinated cross-team delivery.

Senior Software Engineer

Goki · backed by Hostelworld · Sydney · Remote

  • Senior engineer at a Hostelworld-backed product company. Product team doubled revenue in the first year — Named by the founders as a standout contributor during a year the product team doubled revenue
  • Drove a company-wide codebase refactoring initiative that improved maintainability and developer velocity.
  • Built component libraries and complex UI features with React and TypeScript.

Full-Stack Engineer

Clansell

  • Built and operated a digital commerce platform from scratch — search, payments, and infrastructure. First end-to-end product I shipped and ran in production.
  • Built a search indexing pipeline that achieved #1 Google ranking for the primary keyword, driving 10x revenue growth.
  • Designed multi-currency payment processing with automated reconciliation.

Open Source & Community

  • StackOverflow: Top 1% globally — 13M+ developers reached, 11,000+ reputation, 4 gold badges.
  • GitHub: Open-source projects including NestJS + GraphQL API, Next.js frontend, Docker/Postgres backup tools, and monitoring stacks.