- Freelance Developer
- Full Stack Developer
- Freelance Developer
- Full Stack Developer
- Freelance Developer
- Full Stack Developer
- Freelance Developer
- Full Stack Developer
Aboutme
Rising from the Ashes
I’m Gurwinder Singh, a Full-Stack Developer with 9+ years of hands-on professional experience — from native Android apps to full-stack product engineering, and now as an independent developer partnering directly with clients worldwide. I deliver SaaS platforms, custom solutions, CRM/ERP systems, e-commerce solutions, and custom automation tools that drive real business growth. My focus is on creating end-to-end web solutions — from front-end interfaces that delight users to back-end systems that power efficiency, data integrity, and performance.
What I Build
- SaaS Platforms: Scalable, secure, and user-friendly software-as-a-service applications tailored to your business model.
- Custom Business Solutions: Bespoke web applications and internal tools that streamline workflows and automate operations.
- CRM & ERP Systems: Intelligent platforms that centralize data, enhance collaboration, and optimize resource management.
- E-Commerce Solutions: Modern, conversion-focused online stores with smooth user journeys and automated integrations.
- Process Automation: API-based workflows, integrations, and dashboard systems that reduce manual effort and increase efficiency.
Technical Expertise
- Front-End: React, Next.js, Redux, Hooks, Context API, TailwindCSS, and modern UI frameworks.
- Back-End: Node.js, Express, REST APIs, GraphQL, and authentication systems (JWT, OAuth).
- Databases: MongoDB, PostgreSQL, MySQL — optimized for scalability and performance.
- Deployment & DevOps: AWS, Netlify, Vercel, and DigitalOcean for reliable and secure hosting.
- Integrations: Stripe, Firebase, Google Maps, CMS platforms, CSV/PDF handling, and third-party APIs.
Why Work With Me
- Results-Driven Development: Every project is engineered for scalability, usability, and measurable business impact.
- Full Lifecycle Delivery: From planning and architecture to deployment and long-term support.
- Proven Track Record: 9+ years across product companies and freelance work, a 100% Upwork job success score, and long-term client relationships.
- Cross-Industry Experience: From startups to enterprises — I’ve built solutions that power SaaS products, online stores, and internal systems.
- Collaborative & Transparent: I partner with clients to turn complex requirements into simple, elegant, and effective solutions.
Let’s collaborate to build powerful SaaS applications, intelligent CRM/ERP platforms, or custom web solutions that move your business forward. Your vision + my technical execution = results that last.
Services
You don't buy code — you buy an outcome. Here's what I'm handed, and what you get back.
Web Development
Websites and web apps that load fast, rank on Google and turn visitors into enquiries.
- Marketing sites & landing pages
- SaaS platforms, CRM & ERP
- E-commerce stores that convert
API Development
The plumbing behind the scenes — secure, documented and built so your tools finally talk to each other.
- REST & GraphQL APIs
- Payments, Stripe & third-party integrations
- Automation that kills manual work
Mobile Development
One codebase, both app stores. Native-feeling apps your customers keep on their home screen.
- React Native for iOS & Android
- Native Android (Java / Kotlin)
- Store submission handled for you
Not sure which of these you need? That's exactly what the free call is for.
Howitworks
Hiring a developer is risky when you cannot see what you are paying for. So I made the whole thing visible from day one.
Free Consultation
30 minutesWe get on a call and I listen. You walk away with a clear picture of what should be built, what it will realistically cost, and how long it will take — whether or not you hire me.
Fixed Plan & Quote
48 hoursYou get a written scope, milestone breakdown and a fixed price. No hourly surprises, no vague estimates. You approve it before a single line of code is written.
Build in the Open
Weekly demosYou see working software every week on a live staging link, not a status report. Feedback goes straight into the next sprint, so nothing drifts away from what you asked for.
Launch & Support
30 days includedI deploy it, hand over the code and documentation, and stay on for 30 days of free bug fixes. You own everything: repository, servers, accounts.
Frameworks
ReactJs
NodeJs
Android
iOS
Flutter
Testimonials
FAQ
The questions every client asks before saying yes — answered before you have to ask them.
Because you never pay for work you haven't seen. The project is split into milestones, each one ends with working software on a live link, and you approve each milestone before the next starts. If you ever want to stop, you stop — and you keep every line of code written so far.
Most small business sites land between a few hundred and a few thousand dollars; custom SaaS, CRM and ERP builds are quoted per scope. You get a fixed price in writing before we begin, so the number you approve is the number you pay. Full breakdown lives on the rates page.
I've worked with clients across the US, UK, Canada, Australia and the UAE for years. I keep overlapping hours with your working day, reply within a few hours, and we agree on a communication rhythm up front — Slack, email, WhatsApp or a weekly call, whatever suits you.
You do. Entirely. The repository, hosting, domain, database and third-party accounts are created in your name or transferred to you at launch. No lock-in, no hostage situations — any developer can pick up where I left off.
Yes, and it's a large part of what I do. I'll audit the existing codebase, tell you honestly whether it's worth rescuing or rebuilding, and give you both options with costs. You decide.
That's the most common reason people book the call. Come with the problem, not the spec. We'll turn the fuzzy idea into a scoped, prioritised plan — and if the honest answer is that you don't need custom software, I'll tell you that too.
- Aug 2026 — Now
NowAI Engineer
Last Koin · Freelance
- Oct 2022 — Sep 2026Freelance
Full Stack Developer
F Koin Tech
- Nov 2019 — Sep 2022
WorkFull Stack Developer
Asrit Technologies Pvt. Ltd.
- Jan 2018 — Oct 2019
WorkAndroid Developer
Sachtech Solutions Pvt. Ltd.
- 2017 — 2018
WorkIntern
Solitiare Infosys
- 2014 — 2017
EducationMaster of Computer Applications
Punjabi University, Patiala
- 2011 — 2014Education
Bachelor of Computer Application
Punjabi University, Patiala
- 2011
EducationSchool +2
Govt. School, Punjab
- 1993
LifeBorn
Punjab, India
Taking on new projects this month
Let's turn your idea into something your customers can actually use.
One call is all it takes to know whether we're a fit. Bring the problem — I'll bring the plan, the timeline and an honest price. Worst case, you leave with a clearer roadmap than you arrived with.
- Free 30-minute call — no obligation, no sales pitch
- Fixed quote in writing before any work starts
- You own the code, the accounts and the servers
- 30 days of free bug fixes after launch
Prefer email? dev.whoguri@gmail.com — I reply within one business day.