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Senior Full-Stack Engineer · California

I Build and Scale
Production Systems

10+ years shipping production software. Node.js, React, TypeScript, cloud infrastructure. Authorized to work in the United States. Open to full-time senior engineering roles.

La Canada Flintridge, CA · Authorized to Work in the US · Top 1% StackOverflow · 100K+ Transactions


Track Record

What I've Built

Production systems at every stage — from founding to scaling to leading teams.

Founder & CTO Sep 2023 – Present

RadShim

Multi-tenant subscription SaaS platform. Built from zero to 5,000+ paying subscribers, 100K+ transactions, and 15K concurrent sessions on self-managed infrastructure of 100 servers.

NestJS GraphQL Next.js PostgreSQL Docker Prometheus
Team Manager → Advisor Dec 2022 – Dec 2024

Cobl (formerly Thinkeo)

AI-powered document generation platform, Paris. Led engineering team, owned DevOps and infrastructure end-to-end. Engineering decisions directly contributed to the company's first $1M raise.

Node.js React TypeScript CI/CD Docker
CEO (promoted 3×) Dec 2019 – Dec 2022

pelas.ir

Real estate platform comparable to Zillow. Raised $200K in funding, led 15–20 employees, acquired 4,000+ B2B customers. Promoted from Senior Frontend Lead to CTO to CEO in one year.

Node.js React PostgreSQL Docker CI/CD
Senior Frontend Lead Jan 2018 – Dec 2019

Goki

Hostel booking platform backed by Hostelworld. Led frontend chapter across a 20–50 person org. Product team sales doubled in the first year. Recognized by founders as a standout contributor.

React Redux TypeScript

By the Numbers

11,000+

StackOverflow Reputation

100K+

Platform Transactions

5,000+

Paying Subscribers

10+

Years of Experience


What People Say

From People I've Worked With

"Masih's engineering leadership was central to our first $1M fundraise. He owned our infrastructure and DevOps end-to-end, and I continued relying on his expertise as a strategic advisor long after his management role ended."

Damien Hontang

CEO, Cobl · Paris, France

"Working with Masih was a turning point for our technical foundation. He brought a level of rigor to our DevOps and backend architecture that let the rest of the team ship faster and with real confidence."

Quentin Marquet

CTO & Co-founder, Thinkeo · Paris, France

"Masih led our frontend chapter and in his first year, our product team's sales doubled. He was genuinely a hero of the team — reliable, fast, and always thinking about the bigger picture."

Arash Karimzadeh

Founder & CTO, Goki · Sydney, Australia


About

Who I Am

I'm a senior full-stack engineer based in La Canada Flintridge, California. I've spent over ten years building and operating production systems — from early-stage startups to scaling to thousands of concurrent users. I'm authorized to work in the United States and open to full-time senior engineering roles.

On the application side: Node.js, React, TypeScript. On the operations side: Docker, Linux, custom CI/CD pipelines, monitoring, and infrastructure automation. I've built and managed systems end-to-end — from database design through deployment and production operations. Most of that experience is on self-managed infrastructure, which is significantly harder than relying on managed cloud services. I work well with US and European teams across time zones.

My biggest proof point: I built and operated a high-volume subscription SaaS platform — 100,000+ transactions, 5,000+ concurrent paying subscribers, and six-figure revenue. Self-managed infrastructure: Docker containers, custom deployment automation, production monitoring, multi-currency payment systems, and capacity planning. I made every technical decision from architecture through production operations.

On StackOverflow, I've earned 11,000+ reputation — placing me in the top ~1% of all users. Hundreds of answers on backend architecture, infrastructure, and system design. See my StackOverflow profile →


Based in California · Authorized to Work in the US · B.Sc. Computer Engineering · Open to Full-Time & Remote Roles


I'm looking for my next full-time role.

If you're building something meaningful and need a senior engineer who can own systems end-to-end — from architecture to production — I'd love to talk.

[email protected]