Available for New Projects

I Build Web Apps That Grow Your Business

Full-stack developer specializing in modern web applications, SaaS platforms, and e-commerce solutions for startups and businesses.

6+

Projects Delivered

9+

Years Experience

8+

Happy Clients

Explore My ProjectsBook a Free Call
Mursalin

Trusted by innovative companies

TechVenturesCloudScaleStartupHubDataFlowWebCraftNovaSoftTechVenturesCloudScaleStartupHubDataFlowWebCraftNovaSoft
★★★★★

“Mursalin built our real-time collaboration platform with WebSocket and WebRTC — not easy stuff. The app handles 1000+ concurrent users without breaking a sweat. His code quality and communication are top-notch.”

Alex Turner

Alex Turner

Technical Co-Founder, DevCollab

Featured Projects

A selection of recent work I'm proud of

FinPay — Fintech Payment Gateway
Completed

FinPay — Fintech Payment Gateway

A PCI DSS Level 1 compliant payment processing platform built for PayStream, a fintech startup serving small and mid-size e-commerce merchants. The platform handles multi-currency payment processing across 15 currencies, real-time transaction monitoring with custom fraud scoring, automated daily reconciliation, and a merchant self-service onboarding portal. Currently processing $2M+ monthly transaction volume with a 99.99% success rate and 98.5% fraud detection accuracy.

$2M+ monthly volume with 99.99% success rate and real-time fraud detection

ReactTypeScriptNestJSPostgreSQL+4
DetailsDemoCode
DevCollab — Real-Time Code Review Platform
Completed

DevCollab — Real-Time Code Review Platform

A real-time code review and pair programming platform built for distributed engineering teams. DevCollab combines Google Docs-style collaborative editing with GitHub PR workflows, live cursors, inline threaded comments, peer-to-peer video chat via WebRTC, and session recording for async review. The platform reduced code review turnaround from an average of 48 hours to under 2 hours for CodeBridge's 40+ person engineering team, and now serves 120+ active teams with 8,000+ review sessions monthly.

Code review turnaround from 48 hours to under 2 hours — for teams that ship fast

Next.jsTypeScriptSocket.IOWebRTC+4
DetailsDemoCode
SaaS Analytics Platform
In Progress

SaaS Analytics Platform

A multi-tenant product analytics platform built as an affordable alternative to Amplitude and Mixpanel for mid-market SaaS companies. The platform ingests 50M+ events daily from 500+ business tenants, provides sub-second query responses via ClickHouse, and offers a drag-and-drop dashboard builder with funnel analysis, cohort tracking, and automated reporting. Currently in active development with the event pipeline and core analytics engine complete, and the dashboard builder in its final phase.

Enterprise-grade product analytics at 1/10th the cost — processing 50M+ events daily

ReactTypeScriptNestJSClickHouse+4
Details
View all projects →

Services

How I can help bring your vision to life

Full-Stack Web Development

$3,000

End-to-end web application development — from database design to polished UI. I build fast, scalable, and maintainable apps using React, Next.js, and NestJS.

  • React / Next.js Frontend
  • NestJS API Backend
  • PostgreSQL Database
  • Authentication & Authorization
  • Payment Integration
  • Deployment & CI/CD
Get Started

E-Commerce Solutions

$5,000

Custom online stores with inventory management, payment processing, and analytics. Optimized for conversions and built to handle high traffic.

  • Product Catalog
  • Stripe / PayPal Payments
  • Order Management
  • Inventory Tracking
  • Customer Accounts
  • Analytics Dashboard
Get Started

UI/UX Design & Frontend

$2,000

Beautiful, accessible interfaces with smooth animations. I turn Figma designs into production-ready code with pixel-perfect attention to detail.

  • Responsive Design
  • Motion & Animations
  • Design System Creation
  • Accessibility (WCAG 2.1)
  • Performance Optimization
  • Cross-Browser Testing
Get Started

API Development & Integration

$2,500

RESTful and GraphQL APIs that are secure, documented, and built to scale. I also integrate third-party services like Stripe, Cloudinary, and more.

  • REST & GraphQL APIs
  • Swagger / OpenAPI Docs
  • Rate Limiting & Caching
  • Third-Party Integrations
  • Webhook Handling
  • Database Optimization
Get Started

Technical Consulting

$200

Architecture reviews, code audits, and technology strategy for startups and growing teams. I help you make the right technical decisions early.

  • Architecture Review
  • Code Quality Audit
  • Performance Profiling
  • Tech Stack Selection
  • Scaling Strategy
  • Team Mentoring
Get Started

MVP Development

$4,000

Rapid prototyping to validate your idea. I build functional MVPs in 4-8 weeks that are production-quality — not throwaway code.

  • User Research & Planning
  • Rapid Prototyping
  • Core Feature Build
  • User Authentication
  • Cloud Deployment
  • Post-Launch Support
Get Started
Discuss Your Project
Career

My Journey

9+ years of building digital experiences

Jun 2023 — Present2 yrs 8 mos

Senior Full-Stack Developer

TechVentures Inc. · Remote

Leading development of scalable SaaS products serving 50K+ users. Architected a multi-tenant analytics platform, built real-time collaboration features, and mentored a team of 4 junior developers.

Next.jsNestJSPostgreSQLRedisDockerAWS
2
Mar 2021 — May 20232 yrs 2 mos

Full-Stack Developer

StartupLab · San Francisco, CA

Built and shipped 3 client-facing products from scratch. Migrated legacy Express APIs to NestJS, reducing response times by 40%. Introduced CI/CD pipelines and automated testing.

ReactNestJSTypeScriptMongoDBDocker
3
Aug 2019 — Feb 20211 yr 6 mos

Frontend Developer

DesignCraft Agency · New York, NY

Developed pixel-perfect, responsive interfaces for 20+ client projects. Introduced component-driven architecture with Storybook. Won "Best UI Implementation" award for a fintech dashboard.

ReactTypeScriptTailwindCSSFramer Motion
4
Jan 2018 — Jul 20191 yr 6 mos

Junior Web Developer

WebFlow Studios · Dhaka, Bangladesh

Started my professional journey building WordPress sites and custom PHP applications. Transitioned to modern JS stack within the first year. Delivered 30+ websites for local and international clients.

JavaScriptPHPMySQLWordPressHTML/CSS
5
Jun 2016 — Dec 20171 yr 6 mos

Freelance Developer

Self-Employed · Remote

Took on freelance projects while studying CS. Built a portfolio of small business websites, landing pages, and e-commerce stores that generated real revenue for clients.

HTMLCSSJavaScriptBootstrap

Tech Stack

Technologies I work with daily

Frontend

95
React
92
Next.js
90
TailwindCSS
85
Framer Motion
72
Vue.js

Languages

93
TypeScript
95
JavaScript
70
Python
82
SQL

Backend

90
NestJS
92
Node.js
88
Express
75
GraphQL

Database

85
PostgreSQL
88
Prisma
78
Redis
72
MongoDB

DevOps

80
Docker
72
AWS
90
Git

Digital Products

Ready-made tools and templates to accelerate your projects

$199.00
Full App

Full-Stack E-Commerce Kit

Complete e-commerce solution with Next.js storefront, NestJS backend, Stripe checkout, and admin panel. Ready to customize and deploy.

(38)
Next.jsNestJSPostgreSQLStripe+1
DetailsBuy
$49.00$29.00
Template

Portfolio Website Template

A stunning developer portfolio template with Liquid Glass design, blog support, and project showcase. Built with Next.js 16 and TailwindCSS v4.

(156)
Next.jsTypeScriptTailwindCSSFramer Motion+1
DetailsBuy
$59.00
Template

NestJS API Template

Enterprise-grade NestJS API template with authentication, caching, rate limiting, and Swagger docs out of the box. Start building in minutes.

(83)
NestJSTypeScriptPrismaPostgreSQL+1
DetailsBuy
Browse all products →

What People Say

Feedback from clients and collaborators

★★★★★

“Mursalin built our real-time collaboration platform with WebSocket and WebRTC — not easy stuff. The app handles 1000+ concurrent users without breaking a sweat. His code quality and communication are top-notch.”

Alex Turner

Alex Turner

Technical Co-Founder at DevCollab

★★★★★

“We hired Mursalin to build our payment dashboard and he delivered a PCI-compliant, enterprise-grade solution. His understanding of both security requirements and UX is impressive. Would absolutely work with him again.”

Priya Sharma

Priya Sharma

VP of Engineering at FinPay Solutions

★★★★★

“The Liquid Glass UI Kit is phenomenal. Every component is accessible, beautifully animated, and easy to customize. It elevated the quality of my client projects significantly.”

David Kim

David Kim

Freelance Designer

★★★★★

“The SaaS starter kit I purchased saved our team at least 6 weeks of development. Excellent code quality and the documentation is thorough. Best investment for our startup.”

Lisa Thompson

Lisa Thompson

CEO at GreenLeaf Digital

★★★★★

“Mursalin's full-stack expertise was exactly what we needed. He built our analytics dashboard from scratch — real-time charts, complex filters, and it handles millions of data points effortlessly.”

Michael Park

Michael Park

Engineering Lead at DataFlow Systems

★★★★★

“The attention to detail in both the UI and the backend logic was outstanding. Mursalin turned our complex requirements into an elegant, performant solution. Our users love the result.”

Emily Watson

Emily Watson

Product Manager at DesignCraft

Latest Posts

Thoughts on development, design, and building products

·11 min read

Optimizing React Performance: Beyond the Basics

You know about memo and useMemo. Let's go deeper — virtualization, bundle analysis, render profiling, and architecture patterns that keep React apps fast at scale.

Web DevelopmentTutorial
Read more →
·14 min read

How I Went from Junior to Senior Developer in 4 Years

The strategies, habits, and mindset shifts that accelerated my career — from writing basic PHP to architecting SaaS platforms.

Career
Read more →
·10 min read

Docker for Full-Stack Developers: A Practical Guide

Stop copying Docker configs blindly. Learn how Docker actually works and build production-ready containers for your Next.js and NestJS applications.

DevOpsTutorial
Read more →
Read all posts →

Let's Work Together

Have a project in mind?

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Have a question? Drop me a line and I'll get back to you within 24 hours.

Frequently Asked Questions

Common questions about working with me

I specialize in the modern JavaScript/TypeScript ecosystem — React, Next.js, NestJS, PostgreSQL, Prisma, and Docker. I also have experience with Python, GraphQL, Redis, MongoDB, and AWS services.

It depends on scope. A landing page or simple website takes 1-2 weeks. A full-stack web application typically takes 6-12 weeks. An MVP can be delivered in 4-8 weeks. I provide detailed timelines during our initial consultation.

I offer both project-based fixed pricing and hourly rates. Fixed pricing works best for well-defined projects with clear requirements. Hourly billing ($100-150/hr) is ideal for ongoing work or evolving requirements. All projects include a detailed proposal upfront.

Absolutely. I offer monthly retainer packages that include bug fixes, security patches, performance monitoring, minor feature additions, and priority support. Packages start at $500/month.

Yes! I frequently join existing projects. I start with a thorough code audit to understand the architecture, identify technical debt, and create a plan for improvements. I can work alongside your team or as a solo contributor.

I use a combination of async updates (weekly progress reports via email/Slack) and sync check-ins (30-min weekly calls). You get access to a project board where you can track progress in real-time. I believe in over-communicating rather than under-communicating.

Digital products are non-refundable once the download link is accessed, since the product has been delivered. However, if you encounter bugs or the product doesn't match its description, I'll fix the issue or issue a full refund within 14 days of purchase.

Yes, I'm available for both project-based freelance work and part-time contracts (10-20 hrs/week). For full-time engagements, I prefer contract-to-hire arrangements. Let's chat about what works best for your needs.