RainbowSoft
About us

Engineers who care about your outcome

Rainbow Soft is a tight-knit team of senior engineers. We help founders and companies turn ideas into reliable software, and we stay around to help it grow.

Our story

Every color of the stack, one team.

Our name comes from a simple idea: great products need the whole spectrum. Strategy, design, frontend, backend, mobile, cloud and AI have to work together, and too often they're split across vendors who never talk to each other.

At Rainbow Soft, one senior team covers the entire spectrum. Our leadership brings more than a decade of experience each in architecture, automation and AI-powered products. We have shipped internal platforms that cut a client's SaaS spend by CAD 10k a month, live-commerce marketplaces and cross-platform apps with hundreds of videos.

What we value

How we work with clients

Senior by default

Your project is built by the people you meet, experienced engineers rather than a rotating bench of juniors.

Radical transparency

Weekly demos, a shared board and honest estimates. You never have to guess where your project stands.

AI-native

We use AI where it adds real leverage, in our own workflow and in the products we build.

Ownership

We treat your product like our own. Clean code, documentation and a smooth handover come standard.

The team

Meet the people

The same people from the first call to launch day.

Feng Jin, Founder & CEO
Feng Jin
Founder & CEO

Hands-on technical leader with 10+ years of experience turning ideas into reliable software.

Zhou Qia, CTO
Zhou Qia
CTO

Technical leader with 10+ years of experience in architecture, automation, and AI-powered products.

Hao Jia, Senior Software Engineer
Hao Jia
Senior Software Engineer

Problem solver focused on clean architecture, code quality, and reliable delivery.

Yuan Zhi, Full-stack Developer
Yuan Zhi
Full-stack Developer

Full-stack engineer focused on clean code, fast performance, and seamless user experiences.

Our process

Discovery → Design → Build → Launch → Support

  1. 01

    Discovery

    We dig into your goals, users and constraints, then turn them into a prioritized scope, timeline and budget.

  2. 02

    Design

    We map user flows and build clickable Figma designs, so you see and test the product before we write code.

  3. 03

    Build

    We work in short, transparent sprints with weekly demos, so you always know what shipped and what's next.

  4. 04

    Launch

    We handle QA, deployment, app-store releases, monitoring and analytics, and launch day goes smoothly.

  5. 05

    Support

    After launch we keep improving: fixes, new features, scaling and performance tuning as you grow.

Clients

Trusted by founders

“Working with RainbowSoft on our web development project was a fantastic experience: they understood our requirements precisely and delivered a polished website that exceeded our expectations, right on schedule. Their transparent communication and quick responses gave us confidence throughout, and we would gladly work with them again.”
Ramy Daas
Ramy Daas
Founder & CEO, VTS Labs · United States
“RainbowSoft delivered an AI solution that fit our business needs perfectly, turning a complex idea into a reliable, well-performing product that has already improved our workflow. Their team combined deep technical expertise with clear, patient communication throughout the project, and we would confidently recommend them to anyone looking for a trusted AI development partner.”
Michael Goulden
Michael Goulden
Co-Founder & CEO, Kerbo Charge · United Kingdom

Have an idea? Let's build it together.

Tell us what you're working on. You'll hear back from a senior engineer, not a salesperson.