I'm a senior full-stack web developer with over a decade of experience building web applications for organisations ranging from startups to the NHS, Tesco, and Sky. I've built and maintained applications across a wide range of domains: internal tools, customer-facing SaaS products, data-heavy business systems, and greenfield MVPs. I care about code quality, test coverage, and building things that are easy to maintain long after the initial sprint is over. A few past projects: - A burglary tracking and prevention system for a major UK supermarket chain - A document-management system for an investment company - An AI-powered tutor for technical topics - MVPs for early-stage founders, from scoping what to build first to shipping fast and setting up for growth I also bring experience beyond code: product design, copywriting, and growth engineering (onboarding flows, programmatic SEO, the things that matter after launch). I think like a product person and build like an engineer. Whether you need help with an existing app (upgrades, performance, new features, deployment) or you want someone to build something from scratch, send me a message. Technical skills: - Back-end: TypeScript (Node, Express, Hono), Ruby (on Rails), Go - Front-end: React (Next.js & Vite), Astro, Hotwire, Stimulus, TailwindCSS - Databases: PostgreSQL, MySQL, Redis - Infrastructure: Hetzner, AWS, Kamal, Docker, GitHub Actions

"An excellent experience. Sam quickly picks up on both the technical requirements of a job and also immediately contributes to the overall strategic analysis and goals. So valuable." - Tim, Cazenovia Software "Sam very quickly understood the context of my project, which has multiple moving parts/technologies/languages. He was able to advise on a clear way forward in a way that addressed my concerns and goals. Thanks Sam!" - Daniel, SimpleDiagrams "Sam was a very good communicator, he understood my requirements without too much direction and went above and beyond what was required of him to deliver a job very well done!" - Brad, Insure and Away I am a professional Ruby on Rails developer with over 15 years experience developing web applications on a variety of technologies and platforms. I have a strong focus on best practices, and test driven development (both front and back end). I prefer to get things done right the first time so you don't have to keep coming back to them. I enjoy working on challenging projects, and have experience in the following areas: - Testing (RSpec, Capybara, Cucumber, MiniTest, Teaspoon/Mocha) - Guard - ActiveRecord (prefer working with Arel, but I also have a lot of experience with SQL) - Devise, CanCan, Pundit - RailsAdmin, ActiveAdmin - Front end (many years experience working with JavaScript) - Heroku - DevOps (Vagrant, Puppet) - Linux - Deployment (Capistrano) Due to the many years experience I have with a large number of different technologies however, I can very quickly pick up new technologies. I would love to help you build a state of the art web application just as much as I would enjoy working on existing or legacy projects (developing new features, updating technologies, or bringing best practices and testing in to unstable or poorly structured code). English is my first language, and you can expect my communication to be prompt, polite and friendly. I will however not hesitate to speak out if I feel something is being done incorrectly, or can be improved upon. So if you have a project where you feel I can help out, please don't hesitate to get in touch!

⭐⭐⭐⭐⭐TOP RATED Senior Frontend & Backend Developer with a Passion for Building High-Performance Web Applications I am a seasoned backend developer with over 9 years of experience in designing, developing, and deploying scalable web applications. My expertise spans a diverse range of technologies, including: Backend Development: - Ruby: Ruby on Rails - MERN/MEAN Stack - Python: Django, Flask, Pandas, NumPy, Redis, Celery - Java: Spring, Hibernate, Lambdas - Databases: PostgreSQL, MySQL, SQLite, MongoDB, DynamoDB, Elasticsearch, Redis - DevOps: Docker, Kubernetes, AWS, Azure, Digital Ocean - Other: Apache stack, Git, Github, CircleCI, Jenkins, Sonar, Jira, Azure, Zendesk Frontend Development: JavaScript: React, Next.js, Vue.js, AngularJS, My Strengths: -Problem-solving: I thrive on tackling complex technical challenges and finding efficient solutions. -Collaboration: I am a strong team player who values open communication and knowledge sharing. -Quality & Delivery: I am committed to delivering high-quality work on time and within budget. -Continuous Learning: I am passionate about staying up-to-date with the latest technologies and trends. Long-Term Partnerships: I believe in building long-term relationships with clients and colleagues based on mutual trust and respect. My top priorities are integrity, quality, and timely delivery. Passion for Code: Coding has been my passion since childhood, and I find immense satisfaction in crafting elegant solutions to challenging problems. I am eager to contribute my skills and experience to your next project.

React & React Native as well as Angular 2-9 development I am a Full-stack Expert with over than 8 years of web development background I have a lot of experience working with React, Angular 2-9 & React Native. I have strong skills at: ✅ React ✅ React Native ✅ Angular 2-9 and latest ✅ Javascript ✅ Typescript Other skills: ✅ Github, Jira, Bitbucket ✅ git ✅ AWS ✅ APIs: google maps, youtube API, facebook, etc. On the back-end, I work with Node.js JavaScript framework and various databases such as MongoDB, MySQL, PostgreSQL database. You can see examples of web sites, web applications and services in my portfolio.

Hi, I'm Kanwal. I've been building mobile apps and web platforms for twelve years, and the last three of those have been almost entirely AI work - building agents, integrating LLMs, and helping founders figure out what's actually worth automating. On Upwork specifically: 4,638 hours, 43 jobs, $100K+ earned, 86% Job Success. Those numbers matter because they mean I've been through the full lifecycle on this platform many times, including the hard projects where things didn't go to plan and we figured it out together. Here's what I'm good at and what I enjoy working on. AI agents and LLM integration Most of my recent work is here. Real agents that do useful things inside real companies - qualifying leads inside a CRM, answering Tier-1 support tickets, matching buyers and sellers on a marketplace, turning messy documents into structured reports. I work with OpenAI, Claude, and the open-source models (Llama, Mistral) when self-hosting makes sense. LangChain, vector stores like Pinecone and pgvector, RAG setups, and workflow automation with n8n. If you've been disappointed by a ChatGPT wrapper and want the next level up, this is where I live. Mobile apps (my long-standing strength) Flutter and React Native are my primary tools. I've shipped 70+ apps over the years across food delivery, logistics, marketplaces, fintech, and on-demand services. Real-time chat, live tracking, push notifications, Stripe and Razorpay integration, secure auth, and role-based access. I write mobile apps that feel native on both iOS and Android because getting that right is most of what makes an app feel trustworthy to users. Marketplace and SaaS platforms Upwork-style talent marketplaces, multi-vendor platforms, service marketplaces, B2B SaaS with admin panels, mobile and web synced from the start. I've built enough of these to know where the hidden complexity sits (search, ranking, payments split, dispute flows, notification timing) and I can help you avoid the usual pitfalls before we write any code. Backend and architecture Node.js, Python (Django, FastAPI), Laravel, Ruby on Rails. PostgreSQL, MySQL, MongoDB, Redis. REST and GraphQL APIs. AWS deployment. I write backend code that holds up when you grow past the first hundred users. Integrations I ship most often Payments: Stripe, PayPal, Razorpay AI: OpenAI, Claude, Llama, custom fine-tunes CRM: HubSpot, Salesforce, Zoho Automation: n8n, Zapier, custom webhooks Third-party APIs and IoT/BLE when the project calls for it A bit about how I work I like to understand your business before I start writing code. The first conversation is usually 30 minutes on a call where you walk me through the problem, and I ask the questions that help both of us figure out whether this is the right project to start with or whether something smaller would get you moving faster. If we decide to work together, you get a written scope and timeline within two days, and I stay your main point of contact throughout the build. I also run Genboot, a small engineering studio based in Chandigarh with around 30 engineers. For bigger projects I bring in the right specialists from the team, and I stay personally involved as the technical lead so you always have one person who knows the whole picture. For smaller projects it's often just me. Free 30-minute consultation if you'd like to talk through what you're building. Whether we end up working together or not, I'll give you my honest read on the shortest path to your first working version. Looking forward to hearing from you.

I help startups and businesses build clean, scalable web applications using React, Node.js, and modern Full Stack Development architecture. I build SaaS products, dashboards, and automation systems with AI features. Over the last 8+ years, I have worked on MVPs, admin panels, dashboards, reporting tools, automation systems, and business platforms as a Full Stack Developer. Most of my work has involved turning ideas, Figma designs, and business requirements into working products that are practical, fast, and ready for real users. I usually help clients with SaaS MVPs, React frontends, Node.js backends, admin panels, dashboards, reporting tools, API integrations, and full stack web apps built from scratch. My core stack includes React, Next.js, Node.js, Express, MongoDB, PostgreSQL, Supabase, JavaScript, and TypeScript. I focus on clean code, strong communication, and building products in a way that keeps them maintainable as they grow. If you need help building an AI-enabled MVP, dashboard, admin panel, or full stack web application, I can help you scope it properly and build it the right way. 🚀Let’s build something valuable🤝

Python • AI Integration • AI Automation • FastAPI • Flask • Django • Backend Development • SaaS Development • MVP Development • AI Agent Development • Prompt Engineering • N8N • Zapier • Data Engineering • Business Process Automation I build production-grade SaaS platforms, AI-integrated products, and business automation systems for founders and CTOs who need an engineering partner: not a task executor. Over 10+ years and 190+ completed projects, I've learned that the real value isn't writing code on request: it's understanding the business problem well enough to make the right technical call, then owning that decision through to production. What I Deliver AI Integration & Automation : OpenAI and Claude API integration with proper prompt engineering, AI agent workflows for multi-step task automation, plus process automation built in N8N and Zapier that removes manual steps from a client's process. Backend & SaaS Development : Production-grade backends built primarily with Python (FastAPI, Flask, Django) full SaaS products and MVPs built end to end. Also comfortable working in Ruby on Rails when a client's existing codebase or team calls for it. I design APIs for real production load authentication, async processing, clean data models. Business Process Automation & Data Engineering, Python-based ETL pipelines and data acquisition systems that turn scattered information into structured, usable business intelligence collection, cleaning, transformation, delivery into a database or dashboard your team can use. Chrome Extension Development, Custom browser extensions for automation, data capture, and workflow tools, shipped and used in production. Proven Results Euka AI: AI-powered CRM for social commerce. Built core platform features including dashboard workflows, creator discovery and outreach automation, campaign management, and API integrations. ContentDrafter: AI SaaS platform for automated content generation with subscription-based access. Built the AI integration layer, prompt workflow system, authentication, and scalable backend APIs. Optima CRM: Custom CRM for sales pipeline and customer management. Delivered dashboards, lead management, role-based access control, and reporting end to end. Qreates: AI-powered SaaS platform converting product images into interactive 3D visualizations. Built the end-to-end pipeline: image workflows, AI processing, rendering integration. Market Intelligence Pipeline : Python data pipeline surfacing pricing and inventory signals across marketplaces for automated sourcing decisions. Brand Protection System: Automated data acquisition tool paired with an AI-driven analysis dashboard for continuous competitive monitoring. Tech Stack Python • FastAPI • Flask • N8N • Zapier • React • Next.js • Node.js • Express • MongoDB • OpenAI API • Claude API • PostgreSQL • AWS • REST APIs • Selenium • Scrapy • Playwright How I Work I start by understanding the business problem before touching the stack what the automation needs to solve, what the AI feature needs to do for the user, what "done" looks like for the MVP you're asking for. I scope clearly, flag risks early, and build for where your product is going in six months, not just this week's ticket. Why Clients Hire Me Clients consistently cite fast communication, daily progress updates, and code that doesn't need a second developer to fix it later. On more than one project, I've flagged a requested feature that would have caused problems at scale and proposed an alternative before writing a line of code. Let's Build If you need a Python developer who can integrate AI meaningfully, automate a manual process, or build your SaaS MVP end to end, let's talk about what you're building.

I'm an adaptable Web Developer who strongly values clean and accessible design which lends itself to practical usage. Always interested in new challenges. I am proficient in React, Redux, Angular, and Ruby on Rails, and eager to learn more languages and frameworks.

20 years experience as a full stack and DevOps developer. Have worked in everything from personal and business web design to complex web applications, healthcare/EMR, Big Data/MapReduce/machine learning/AI applications. Typescript/NodeJS/Fastify/Express, React, Vue, Angular, Ruby & Ruby on Rails, Python/Flask/Django, Rust, Golang, Angular, PHP, Perl, Elixir, Haskell, C, C++, C#, Wordpress, Joomla, Drupal, Docker, Kubernetes, nginx, lighttpd, Redis, memcached, Apache, Linux/BSD, PostgreSQL, MySQL, DynamoDB, SQLite, MongoDB, Elasticsearch/Kibana/Logstash/Grafana, Neo4j, DB2, Oracle, MSSQL, and others. AWS, Google Cloud Platform, Azure, DigitalOcean, Linode, Heroku, Vultr, Bluehost, HostGator, etc..

I help startups and businesses build production-ready AI products using OpenAI, Claude, Gemini, RAG architectures, AI Agents, and modern LLM infrastructure. Over the past 10+ years, I've led engineering teams delivering SaaS products, automation platforms, internal AI assistants, document intelligence systems, and AI-powered business tools. Today my primary focus is AI engineering: • RAG (Retrieval-Augmented Generation) • AI Agents & Multi-Agent Systems • OpenAI, Claude, Gemini Integrations • AI Chatbots & Internal Knowledge Assistants • Vector Databases (Pinecone, Weaviate, pgvector) • LangChain & LangGraph • AI Search Systems • Document Processing & OCR • AI Workflow Automation • Custom AI SaaS Platforms Recent AI projects include: * Internal AI assistants connected to company knowledge bases * AI-powered document processing systems * Competitive intelligence platforms * AI lead generation and enrichment tools * AI copilots for operational teams * Custom RAG platforms with secure knowledge retrieval Technology Stack OpenAI, Anthropic Claude, Gemini, LangChain, LangGraph, LlamaIndex, Pinecone, pgvector, Python, FastAPI, Node.js, Next.js, PostgreSQL, Supabase, AWS. I focus on building reliable AI systems that solve real business problems, not just AI demos.