You will get a Full Stack SaaS Code Review & Security Audit
Project details
Thorough end-to-end testing that catches bugs before your users do. What sets this apart: I don't just click around — I design structured, repeatable test cases focused on the critical paths where failures actually hurt your business, then test complete user journeys across real devices and browsers. You get clear bug reports with steps to reproduce, severity, and visuals, plus regression testing and a final quality report with recommendations. Backed by 10+ years of full-stack engineering experience, I understand how software breaks from the inside — which means I know where to look.
Testing Platform
Website Testing, Mobile Testing, Software Testing, Game TestingDevice
PC, Mac, Linux, iPhone, iPad, Android Mobile Phone, Android Tablet, Windows Phone, Windows Tablet, Game ConsoleLanguage
English, Arabic, German, Persian, TurkishWhat's included
| Service Tiers |
Starter
$50
|
Standard
$200
|
Advanced
$500
|
|---|---|---|---|
| Delivery Time | 4 days | 6 days | 10 days |
Number of Revisions | 4 | 6 | Unlimited |
Number of Pages Tested | 4 | 12 | 30 |
Screen Recording Time (Minutes) | 15 | 30 | 60 |
Test Scenario | |||
Summary Report | |||
Annotated Screenshots | |||
Test Desktop | |||
Test Mobile |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$200 - $500
Additional Revision
+$50
Additional Page Tested
(+ 1 Day)
+$20
Additional Screen Recording Minutes
(+ 1 Day)
+$50
8 reviews
(8)
(0)
(0)
(0)
(0)
This project doesn't have any reviews.
MA
Mohammad A.
Nov 12, 2024
Expert Laravel Developer for Large-Scale Project
EK
Eric K.
Apr 21, 2024
Experienced React Professional needed to update and improve UI
Great experience working with Mohammad, always going above and beyond the scope.
AB
Arvin B.
Nov 29, 2023
Discovery work
VP
Vivek P.
Oct 2, 2022
Looking for a talented JavaScript developer
Mohammad is a great developer and delivered the high quality work in this project.
VP
Vivek P.
Sep 6, 2022
Looking for a talented JavaScript developer
Mohammad impressed me with his absolute dedication to his work and attention to detail. He also demonstrated problem-solving and an overall positive attitude and drive that is hard to find in the workforce. He would be an extremely valuable addition to any project.
About Mohammad
Senior Full Stack Developer
Antalya, Turkey - 1:52 am local time
✅ Trusted by FedEx, and enterprise Healthcare brands.
👨💻 Senior Full-Stack & React Native Engineer (10+ years) - financial, crypto, healthcare, fintech, gaming, and AI
📱 One of the few React Native devs who ships on-device computer vision - no cloud, no latency
🚀 I build from idea to production: architecture, API design, deployment, and debugging after launch
✔ Brought in by founders for MVP launches, enterprise rebuilds, and production fires
🤝 I work like a product partner — clear trade-offs, honest scope, no handoffs at "the AI part"
As a Full Stack Engineer, I'm usually brought in for MVP builds, product rebuilds, and "this is breaking in production" moments. The difference between hiring me and hiring someone who only ships features: I own the outcome, not just the ticket.
Here's what I do:
1. Full-Stack Development
🔹 End-to-end SaaS and MVP delivery - from architecture decision to production deploy
🔹 Clean code, clear documentation, and a codebase your team can actually maintain
2. React Native + On-Device Computer Vision
🔹 I build real-time CV pipelines directly inside React Native - OpenCV, image processing, object detection, and biometric flows running fully on-device
🔹 New Architecture (Fabric/TurboModules), native-grade performance, no cloud round-trip
3. Healthcare & Healthtech
🔹 I led the technical team at iCareBetter (Boston healthtech), building a platform that connects patients with vetted surgeons — location-aware provider search, Stripe payments, and EMR integration
🔹 Built a double-blinded peer vetting workflow where clinical surgeons review and certify each other, raising the quality bar across the network
🔹 HIPAA-aware development: secure data handling, access controls, and the reliability healthcare products actually require
4. Front-End (React, Next.js, TypeScript, Shadcn)
🔹 Dashboards, product UIs, and modular CMS - built to stay fast as you grow
🔹 SSR, performance audits, and PWA delivery (shipped this at FedEx at enterprise scale)
5. Back-End (Nest.js, Node.js and Laravel)
🔹 APIs, auth (Auth0, JWT), permissions, and business logic built for real usage - not demos
🔹 Background jobs, WebSocket services, and webhooks that hold up when requirements change
6. Database (PostgreSQL, MongoDB, Supabase)
🔹 Data modeling, migrations, and query performance - designed for production, not just MVP
🔹 GraphQL APIs and clean data layers wired to your front end
7. Cloud & Deployment (AWS, Vercel)
🔹 Reliable deployments with clean environments and predictable releases
🔹 AWS Beanstalk for real control; Vercel when you need speed and iteration
8. Fintech & Payment Systems
🔹 Stripe integration, EMR services, and full crypto wallet apps with Web3 signing flows
🔹 Ethereum, Bitcoin, and Binance network integrations - production-grade, not toy demos
9. AI & LLM Integrations
🔹 OpenAI and Anthropic integrations with rate limiting, cost control, and fallback logic
🔹 I wire the AI features into your actual product stack, not a bolt-on
Common projects I handle
SaaS product development — full 0 to Hero ownership
React Native apps with on-device CV and real-time features
MVP builds under real production constraints (Next.js + NestJS + PostgreSQL or Laravel)
Backend systems: auth, APIs, queues, business logic
Fintech and payment systems: Stripe, crypto wallets, Web3
AWS deployments and production stabilization
Performance audits and load testing (k6)
Codebase refactors and release safety improvements
LLM feature integration into existing products
Tools I use
✓ React, Next.js, TypeScript, Shadcn, Redux
✓ Node.js, NestJS, GraphQL, WebSocket
✓ PostgreSQL, MongoDB, Supabase
✓ AWS (Beanstalk), Vercel
✓ Auth0, Stripe, Sentry, Cypress
✓ OpenCV, React Native New Architecture (Fabric/TurboModules)
✓ OpenAI, Anthropic, Web3
If you're building a SaaS, launching an MVP, or fixing something broken in production, let’s chat. I’ll give you a straight-up answer on the scope, timeline, and if I'm the right person for the job.
Steps for completing your project
After purchasing the project, send requirements so Mohammad can start the project.
Delivery time starts when Mohammad receives requirements from you.
Mohammad works on your project following the steps below.
Revisions may occur after the delivery date.
Scope & Test Planning
I review your app, key user flows, and requirements to define what needs testing. We agree on coverage priorities — the critical paths where a bug actually costs you users or money come first.
Test Case Design
I write clear, structured test cases covering the main flows, edge cases, and error states, so you have documented, repeatable coverage rather than ad-hoc checking.