You will get Senior Full-Stack Developer – 40-Hour Development Sprint
Project details
Hey,
You’ll be working directly with a Senior Full-Stack JavaScript Developer experienced in building, scaling, and maintaining production-ready applications.
I’ve worked with US-based startups and businesses, contributing to live products like Leadr, Ubiqua, and several other real-world platforms. I’m comfortable owning features end-to-end—from architecture and development to deployment—while delivering clean, optimized, and maintainable solutions independently.
Core Expertise
Frontend: React.js, Next.js, TypeScript, Angular, Vue.js, JavaScript (ES6+), Tailwind CSS, HTML, CSS
Backend: Node.js, NestJS, Express.js, REST APIs, GraphQL
Databases: PostgreSQL, MySQL, SQLite, MongoDB, DynamoDB, Firebase, Redis
Integrations: Google & Outlook SSO, Stripe, Square, Slack API, SendGrid, Mailchimp
Tools: GitHub, GitLab, Bitbucket, Jira, Trello, Asana, Figma, Adobe XD
DevOps: AWS, DigitalOcean, Linode, Docker, Heroku, Dokku
This offering is a one-time, fixed-scope 40-hour development sprint focused on delivering specific features, improvements, or fixes within a defined timeline.
Happy to discuss your requirements and align on deliverables before getting started.
You’ll be working directly with a Senior Full-Stack JavaScript Developer experienced in building, scaling, and maintaining production-ready applications.
I’ve worked with US-based startups and businesses, contributing to live products like Leadr, Ubiqua, and several other real-world platforms. I’m comfortable owning features end-to-end—from architecture and development to deployment—while delivering clean, optimized, and maintainable solutions independently.
Core Expertise
Frontend: React.js, Next.js, TypeScript, Angular, Vue.js, JavaScript (ES6+), Tailwind CSS, HTML, CSS
Backend: Node.js, NestJS, Express.js, REST APIs, GraphQL
Databases: PostgreSQL, MySQL, SQLite, MongoDB, DynamoDB, Firebase, Redis
Integrations: Google & Outlook SSO, Stripe, Square, Slack API, SendGrid, Mailchimp
Tools: GitHub, GitLab, Bitbucket, Jira, Trello, Asana, Figma, Adobe XD
DevOps: AWS, DigitalOcean, Linode, Docker, Heroku, Dokku
This offering is a one-time, fixed-scope 40-hour development sprint focused on delivering specific features, improvements, or fixes within a defined timeline.
Happy to discuss your requirements and align on deliverables before getting started.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Performance Optimization, Security, DesignWhat's included $500
These options are included with the project scope.
$500
- Delivery Time 4 days
- Number of Revisions 2
- Design Customization
- Content Upload
- Responsive Design
- Source Code
About Hardik
Senior Full-Stack | SaaS Architect (Next.js/NestJS/AWS) | MVP to Scale
Ahmedabad, India - 6:43 am local time
With 11+ years of professional experience and 50+ successful projects delivered, I help startups, founders, and businesses transform ideas into secure, scalable, and high-performance digital products. From MVP development to enterprise applications, I focus on delivering clean code, modern architecture, and long-term business value.
While I'm new to Upwork, I'm not new to software development. Over the past decade, I've worked with clients across multiple industries, delivering production-ready web and mobile applications, AI-powered solutions, and cloud-based platforms.
> Services I Offer
Full Stack Web Development
Custom Web Application Development
SaaS Application Development
AI Application Development
OpenAI & ChatGPT Integration
React.js Development
Next.js Development
Node.js Development
NestJS Development
Laravel Development
REST API & GraphQL Development
Third-Party API Integration
Payment Gateway Integration (Stripe & PayPal)
CRM & ERP Development
Marketplace Development
Admin Dashboard Development
Android App Development
iOS App Development
Flutter App Development
Quality Assurance (QA) & Software Testing
Performance Optimization
Bug Fixing & Ongoing Maintenance
🛠 Core Technologies
> Frontend
React.js
Next.js
JavaScript
TypeScript
Tailwind CSS
> Backend
Node.js
NestJS
Express.js
Laravel
> Mobile
Flutter
Android
iOS
> Databases
PostgreSQL
MySQL
MongoDB
Redis
> Cloud & DevOps
AWS
Docker
CI/CD
Nginx
> AI & Automation
OpenAI
ChatGPT
AI Agents
Workflow Automation
> Quality Assurance
Manual Testing
Functional Testing
Regression Testing
API Testing
Performance Testing
Why Clients Choose Me
11+ years of professional software development experience
50+ successful projects successfully delivered
Expertise in SaaS, AI applications, web platforms, mobile apps, CRM, ERP, and marketplace solutions
Clean, scalable, secure, and maintainable code
Strong communication with proactive project updates
Fast debugging, optimization, and problem-solving
End-to-end ownership - from planning and architecture to deployment and ongoing support
Dedicated to delivering high-quality solutions on time
I believe successful software is built through clear communication, thoughtful architecture, and a deep understanding of business goals. My focus is not just on writing code, but on delivering reliable, scalable, and user-friendly solutions that help businesses grow.
Whether you need a Full Stack Developer, React Developer, Next.js Developer, Node.js Developer, Flutter Developer, AI Developer, SaaS Developer, Mobile App Developer, or QA support, I'm ready to help.
Let's discuss your project and build something exceptional together.
Steps for completing your project
After purchasing the project, send requirements so Hardik can start the project.
Delivery time starts when Hardik receives requirements from you.
Hardik works on your project following the steps below.
Revisions may occur after the delivery date.
Initial Stage
I'll understand your requirements and propose my approach to it