Samir Kumar Patnaik

Full-Stack Developer for Web Applications, APIs & E-commerce

I help businesses build, modernize, troubleshoot, and maintain reliable web applications using Angular, Node.js, TypeScript, PHP, WordPress, and WooCommerce.

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12+ years experience · Enterprise & freelance projects · Open to remote collaboration

Portrait of Samir Kumar Patnaik
12+Years of web development
4+Years on a recent enterprise platform
RemoteUS & global collaboration
Full StackAngular · Node.js · PHP · WordPress

About

Enterprise delivery with freelance ownership.

Headshot of Samir Kumar Patnaik

I am a senior full-stack developer with over 12 years of experience delivering enterprise web applications, custom business websites, e-commerce platforms, and application modernization for remote and global clients.

My strongest areas are Angular and TypeScript frontends, Node.js and Express.js APIs, PHP/MySQL solutions, and WordPress/WooCommerce development. I work comfortably with existing codebases—adding features, integrating APIs, resolving issues, improving performance, and making applications easier to maintain.

Whether you need an experienced developer for an ongoing product or focused help with a web application, I bring practical delivery, clear communication, and ownership from requirements through release.

Services

How I can help your team or product.

  • Web Application Development

    Build or enhance responsive web applications with Angular, TypeScript, Node.js, PHP, and REST APIs.

  • Bug Fixing & Application Maintenance

    Troubleshoot production issues, improve existing features, resolve API/UI problems, and provide ongoing application support.

  • WordPress & WooCommerce Development

    Build and customize WordPress websites and WooCommerce stores, including themes, plugins, checkout flows, integrations, performance, and maintenance.

  • REST API Development & Integration

    Develop and integrate REST APIs, third-party services, authentication, and data workflows for web applications.

  • Legacy Application Modernization

    Improve older PHP or JavaScript applications with cleaner architecture, modern frontend patterns, API-driven integration, and maintainable code.

Featured work

Selected projects that show how I work.

A focused selection of enterprise, financial, WordPress, and e-commerce work. Open a project screenshot for a closer look.

Enterprise retail · Remote

Enterprise Retail Web Application — Angular & TypeScript

Long-term enterprise engagement (March 2022 – July 2026) contributing to a US retail platform across organization, inventory, ordering, reporting, and related workflows.

Problem
Complex enterprise workflows needed reusable UI components, reliable API integration, and maintainable frontend patterns.
Approach
Built and enhanced Angular interfaces with TypeScript and RxJS, integrated REST APIs, resolved application issues, and collaborated through Azure DevOps pull-request and release workflows.
Stack
Angular, TypeScript, RxJS, JavaScript, REST APIs, Azure DevOps
Result
Supported continuous delivery and maintenance of a large production application over a multi-year remote engagement.

Fintech · Remote

Financial Web Application — Angular, TypeScript & RxJS

Developed and enhanced data-heavy financial workflows with reusable Angular components, reactive forms, secure HTTP handling, and performance-focused frontend patterns.

Representative portfolio visual for financial web application development

Representative portfolio visual; client application screens are not publicly available.

Problem
Data-heavy tables and multi-step forms were slow to load and hard to keep secure and consistent.
Approach
Applied lazy-loaded routes and OnPush change detection, centralized HTTP interceptors for token injection / errors / audit logging, and designed reactive form flows with strict validation rules.
Stack
Angular, TypeScript, RxJS, HTTP interceptors
Result
Improved runtime efficiency on critical screens and production-ready forms aligned with US product and backend partners.

E-commerce · Freelance

Custom WooCommerce and storefront architecture

As an independent full-stack and CMS developer, I built scalable WooCommerce and e-commerce platforms with custom plugins, checkout flows, and payment / ERP integrations for international clients.

Problem
Off-the-shelf store setups could not support bespoke checkout rules, gateway needs, or operational integrations.
Approach
Architected custom WooCommerce plugins and storefront workflows, integrated third-party payments and ERP hooks, and hardened performance (Core Web Vitals, caching) and security for higher-traffic stores.
Stack
WordPress, WooCommerce, PHP, payment gateways, caching
Result
End-to-end store delivery with milestone ownership and strong client satisfaction across remote engagements.

WordPress · Fitness & membership

Life of a Fighter — Fitness & Membership Website

Developed and customized a responsive WordPress website for a fitness and personal training business, presenting programs, memberships, nutrition services, athlete results, and partner information.

Problem
The business needed a clear, responsive site to organize multiple fitness services and make its membership offering easy to understand.
Approach
Implemented and customized the WordPress site, integrated content, structured service sections, and supported responsive presentation across the customer journey.
Stack
WordPress, PHP, MySQL, JavaScript, HTML5, CSS3
Result
A structured business website showcasing training programs, membership benefits, nutrition services, facilities, and athlete progress.

Have a project in mind?

Need help building, fixing, or modernizing a web application?

Send me a short description of the project, current stack, and what you need help with. I’ll reply with availability and next steps.

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Skills

Technologies I use to build and maintain web solutions.

Frontend

  • Angular · TypeScript · RxJS
  • TypeScript & JavaScript
  • RxJS & reactive UI patterns
  • HTML5, CSS3, Bootstrap, Tailwind
  • Responsive web design

Backend & APIs

  • Node.js & Express.js
  • PHP & MySQL
  • RESTful APIs & microservices
  • Authentication & third-party integrations

CMS & Commerce

  • WordPress themes & plugins
  • WooCommerce checkout & payments
  • REST API & headless WordPress
  • Security hardening & performance
  • ERP / third-party integrations

Data & DevOps

  • MongoDB & MySQL
  • Azure DevOps & CI/CD
  • Git / GitHub
  • Jira & Agile / Scrum
  • Cursor AI–assisted development

More client work

Selected websites from previous client engagements.

Screenshots represent the websites at the time of development. Some sites may have since been redesigned, changed ownership, or gone offline. Click any project to view the archived screenshot.

Experience

A long runway of remote and client-facing delivery.

  1. Mar 2022 – Jul 2026

    Senior Software Developer · NSR Information System

    Client: Upshop — US enterprise retail · 100% remote

    Enterprise Angular development, REST API integration, modular application architecture, Azure DevOps pull-request reviews, and Cursor AI integrated into daily delivery.

  2. Feb 2021 – Feb 2022

    Angular UI Developer · US Fintech Startup

    100% remote

    Lazy loading, OnPush performance work, secure HTTP interceptors, and complex reactive financial forms in close partnership with US product managers.

  3. Jul 2019 – Jan 2021 & Mar 2016 – Dec 2018

    Freelance Full-Stack & CMS Developer

    Remote / global clients

    Custom WooCommerce platforms, MEAN and headless WordPress modernizations, Core Web Vitals tuning, and full project lifecycle ownership.

  4. Apr 2013 – Feb 2016

    Team Leader – Web Development · Maxim Solution Provider

    Custom WordPress / PHP · international clients

    Led a 4-developer team, owned SOW / SLA delivery, and turned client wireframes into production software as primary technical contact.

  5. May 2003 – Mar 2013

    Senior Web Programmer → Programmer

    Maxim Solution Provider / E-Softech System

    Progressive web, PHP, and custom CMS delivery across a decade of evolving client needs.

Contact

Ready to discuss your next web project?

Share a short brief, stack, and timeline — I will reply with availability and next steps.

Email samir_patnaik@hotmail.com LinkedIn profile
Upwork Fiverr Freelancer.com GitHub
  • Location Bhubaneswar, Odisha, India
  • Availability Open to remote roles & freelance projects

IBM Application Developer Certification (IBM-ACE) · B.Com, Utkal University