You will get A High-Performance Backend API Built With FastAPI, Laravel, or Node.js
Project details
I'll design and build your backend API — fast, documented, secure, and production-ready.
I'm Sanaul Hawk Wasif. My team has built APIs powering FinTech platforms, real estate data services, and cross-border payment systems.
WHAT I BUILD:
• REST, GraphQL, gRPC, WebSocket — OpenAPI/Swagger docs included
• FastAPI (Python): async APIs, ML model serving, data pipelines
• Laravel (PHP): MVC backends, Eloquent ORM, job queues
• Node.js: real-time, microservices, event-driven systems
• Auth: OAuth2, JWT, Laravel Sanctum, API keys
• Caching: Redis — strategies that actually work
• AWS: EC2, RDS, S3, CloudFront, Lambda, Docker, Kubernetes
REAL SYSTEMS BUILT:
• Rate calculation API — under 50ms response time in production
• Cross-border payment API — multi-currency, compliance-aware
• Property valuation ML API — FastAPI + live market data
• Loan origination — state machine workflow with full audit trail
Every delivery: unit tests, load testing, and full OpenAPI docs.
Tell me your backend challenge. Let's solve it.
I'm Sanaul Hawk Wasif. My team has built APIs powering FinTech platforms, real estate data services, and cross-border payment systems.
WHAT I BUILD:
• REST, GraphQL, gRPC, WebSocket — OpenAPI/Swagger docs included
• FastAPI (Python): async APIs, ML model serving, data pipelines
• Laravel (PHP): MVC backends, Eloquent ORM, job queues
• Node.js: real-time, microservices, event-driven systems
• Auth: OAuth2, JWT, Laravel Sanctum, API keys
• Caching: Redis — strategies that actually work
• AWS: EC2, RDS, S3, CloudFront, Lambda, Docker, Kubernetes
REAL SYSTEMS BUILT:
• Rate calculation API — under 50ms response time in production
• Cross-border payment API — multi-currency, compliance-aware
• Property valuation ML API — FastAPI + live market data
• Loan origination — state machine workflow with full audit trail
Every delivery: unit tests, load testing, and full OpenAPI docs.
Tell me your backend challenge. Let's solve it.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$200
|
Standard
$500
|
Advanced
$1,000
|
|---|---|---|---|
| Delivery Time | 5 days | 12 days | 20 days |
Number of Revisions | 2 | 4 | Unlimited |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$50 - $150
Additional Revision
+$25Frequently asked questions
About Sanaul
Full Stack Web App & SaaS Developer | React, Next.js & Laravel
Gazipur, Bangladesh - 7:54 pm local time
I'm Sanaul Hawk Wasif — a Full Stack Web Developer and team lead with 5+ years of hands-on experience building high-performance SaaS platforms, FinTech applications, eCommerce stores, and enterprise web solutions. I lead a 5-member elite engineering team that operates with military precision across every layer of the stack.
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🔧 WHAT I BUILD
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→ SaaS Platforms — Multi-tenant architecture, subscription billing, API integrations
→ FinTech & Finance Apps — Real-time data, secure workflows, compliance-ready
→ eCommerce Stores — WooCommerce, Shopify, headless commerce, conversion-optimized
→ Custom WordPress — Bespoke themes, plugin development, speed optimization
→ Web Applications — React, Next.js, Laravel, Python/FastAPI dashboards & portals
→ REST & GraphQL APIs — High-throughput, scalable backend systems
→ Mobile Apps — React Native & Flutter cross-platform applications
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⚙️ TECH STACK
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Frontend: Next.js, React.js, Vue.js, Tailwind CSS, TypeScript
Backend: Laravel, FastAPI, Node.js, PHP, Python
Database: MySQL, PostgreSQL, MongoDB, Redis
DevOps: AWS, Docker, GitHub Actions, Nginx
CMS & eCommerce: WordPress, WooCommerce, Shopify
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🏆 PROVEN WORK
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✦ iRefinance Australia — FinTech refinancing platform with real-time rate calculations (Next.js, React, Tailwind CSS)
✦ MoneyHop Australia — Cross-border money transfer platform (React, Laravel, MySQL)
✦ MyHomePrice — AI-powered real estate valuation tool (Next.js, Python, FastAPI)
✦ AutoFunding — Vehicle financing platform (React, Node.js, MongoDB)
✦ Secure Business Loan — Enterprise lending platform with multi-step security workflows (Laravel, PHP, MySQL)
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✅ WHY CLIENTS CHOOSE ME
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→ Sub-second performance on every build — speed is non-negotiable
→ Enterprise-grade security built in from day one
→ Clean, documented, maintainable code — no spaghetti
→ On-time delivery with transparent communication
→ A full team behind every project — not a solo freelancer guessing
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If you need something built right the first time — let's talk.
Steps for completing your project
After purchasing the project, send requirements so Sanaul can start the project.
Delivery time starts when Sanaul receives requirements from you.
Sanaul works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements and Architecture Design
Analyze requirements, design the system architecture, define data models, and create an API contract document.
Core API Development
Build all endpoints with authentication, validation, error handling, and database integration.