You will get React Developer | React.js Developer | Senior React Developer
Top Rated
Project details
If you are facing issues like messy code, an unresponsive web app, or something that broke the moment real users showed up, you already know how frustrating that is.
That is exactly what we fix and prevent. We are senior React and React.js developers who have shipped edtech platforms, healthcare apps, SaaS products, AI tools, and real estate platforms. All live, all running clean. I can walk you through it.
When we pick up your project, we think about:
• State structure that does not become a mess at scale
• Performance optimization before it bottlenecks
• Responsive design that works on every device
• Clean code, the next developer can actually read
Our stack covers everything a modern React project needs:
• React.js, Next.js, TypeScript, Tailwind CSS, HTML5, CSS3
• Redux Toolkit, Zustand, Context API
• REST APIs, GraphQL, third-party API integration, and webhook handling
• SPAs, PWAs, dashboards, admin panels, SaaS frontends
You talk directly to the senior React developer building your product. Daily updates, clean handover, no middlemen.
If you need a React.js developer, frontend developer, or Next.js developer, send a message and let us see if we are the right fit.
That is exactly what we fix and prevent. We are senior React and React.js developers who have shipped edtech platforms, healthcare apps, SaaS products, AI tools, and real estate platforms. All live, all running clean. I can walk you through it.
When we pick up your project, we think about:
• State structure that does not become a mess at scale
• Performance optimization before it bottlenecks
• Responsive design that works on every device
• Clean code, the next developer can actually read
Our stack covers everything a modern React project needs:
• React.js, Next.js, TypeScript, Tailwind CSS, HTML5, CSS3
• Redux Toolkit, Zustand, Context API
• REST APIs, GraphQL, third-party API integration, and webhook handling
• SPAs, PWAs, dashboards, admin panels, SaaS frontends
You talk directly to the senior React developer building your product. Daily updates, clean handover, no middlemen.
If you need a React.js developer, frontend developer, or Next.js developer, send a message and let us see if we are the right fit.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$700
|
Standard
$2,000
|
Advanced
$4,000
|
|---|---|---|---|
| Delivery Time | 7 days | 21 days | 35 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 3 | 10 | 25 |
Design Customization | |||
Content Upload | - | ||
Responsive Design | |||
Source Code | - |
Frequently asked questions
9 reviews
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Nils Fredrik R.
Jun 22, 2026
Running work on the Talket site when needed.
I hired Adan to build one of the most technically ambitious parts of my product, Talklet: a real-time AI voice participant that joins live multi-user conversations — something with very little precedent to copy from. He delivered a working end-to-end pipeline (Deepgram speech-to-text, OpenAI for LLM and text-to-speech, integrated into our Daily.co + Next.js + Supabase stack), including in-session Stripe activation and turn-taking logic so the AI listens, waits for silence, and contributes without dominating the room.
What stood out most was how he worked. Adan is a genuinely clear communicator who kept me updated throughout, documented his findings in detail, and was always honest about what was working and what still needed iteration. He’s cost-conscious by default — he proactively proposed an architecture that cut our per-minute voice cost significantly — and highly solution-oriented when the hard, novel problems appeared. He stayed with complex real-time audio and speaker-attribution challenges that many developers would have walked away from. Committed to quality, reliable to work with, and someone I’d happily recommend.
What stood out most was how he worked. Adan is a genuinely clear communicator who kept me updated throughout, documented his findings in detail, and was always honest about what was working and what still needed iteration. He’s cost-conscious by default — he proactively proposed an architecture that cut our per-minute voice cost significantly — and highly solution-oriented when the hard, novel problems appeared. He stayed with complex real-time audio and speaker-attribution challenges that many developers would have walked away from. Committed to quality, reliable to work with, and someone I’d happily recommend.
DM
Dakota M.
May 11, 2026
Looking for a Developer to Build a Zillow-Integrated Real Estate Tool
Adan was an incredible partner and developer. Not only did his work succeed but his communication skills were timely and robust. What I asked him to do was relatively complicated and he took it all in stride. In addition, he has allowed me to stay in touch to follow up on some remaining questions I've had even after our last sprint.I plan to work with Adan again in the futre.
SA
Shamoka A.
Mar 1, 2026
Full-Stack Web App Developer Needed for Bug Fixes and Enhancements
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Anjali B.
Feb 11, 2026
Sr Full-Stack Engineer /Architect for cool LLM App! (Svelte, SvelteKit + Supabase + Python, FastAPI)
Adan is a really great engineer and I genuinely enjoyed working with him. His communication was top-notch throughout the entire project and he was quick to respond whenever I reached out. He kept me in the loop on progress and made the whole collaboration feel smooth and easy. What I really appreciated was how diligent he was about code changes. He took the time to make sure everything was solid and well thought out before moving forward, and when I needed updates or adjustments, he turned them around quickly without sacrificing quality.
Beyond his technical chops, Adan also took real ownership of his work and you could tell he cared about the final product. He brought a level of accountability that you don't always find and was committed to making sure the end result was right.
We worked on a Supabase, Svelte, SvelteKit, Python, and FastAPI stack. And he absolutely knocked it out of the park. I truly enjoyed working with him and would wholeheartedly recommend him to anyone looking for a skilled and reliable engineer. I'd absolutely work with him again.
Beyond his technical chops, Adan also took real ownership of his work and you could tell he cared about the final product. He brought a level of accountability that you don't always find and was committed to making sure the end result was right.
We worked on a Supabase, Svelte, SvelteKit, Python, and FastAPI stack. And he absolutely knocked it out of the park. I truly enjoyed working with him and would wholeheartedly recommend him to anyone looking for a skilled and reliable engineer. I'd absolutely work with him again.
DD
Devon D.
Feb 8, 2026
Remote React Dev | Mobile-First Stat Tracker PWA (Social + Leaderboards + Profile System)
Adan has been a pleasure to work with and will be someone I continue to work with in the future! He is highly intelligent, understands the end goal and provides invaluable feedback and ideas to optimize the project.
About Adan
AI Agent & Voice AI Engineer | Next.js, Python, Supabase | RAG, LLMs
100%
Job Success
Lahore, Pakistan - 1:29 pm local time
WHAT I BUILD
- Autonomous AI agents: multi-step workflows that call tools, recover from failures, and run without a human watching. LangChain, OpenAI, Claude.
- Real-time voice AI: conversational agents with sub-second response. Daily, WebRTC, ElevenLabs, GPT-4o.
- RAG systems: retrieval over your documents that returns accurate answers instead of confident guesses. Pinecone, pgvector, Supabase.
- AI features in existing SaaS: shipped into live codebases with real users, without breaking what already works.
RECENT WORK
- 1500+ hours and counting on a production autonomous AI workflow platform, the longest-running engagement in my history.
- Real-time AI avatar participant that joins live video calls: Daily + GPT-4o + ElevenLabs + Supabase + Next.js.
- AI-powered interactive course platform at Educative serving 28,000+ users.
- DevPath: multi-tenant B2B learning platform for enterprise clients.
HOW I WORK
Long-term and fixed-price where possible. I write the spec first, ship in reviewable increments, and tell you early when something won't work rather than late. Full-stack, so I handle the AI layer and the product around it, no handoff gaps.
BACKGROUND
Senior AI Engineer at Turing, working directly with Anthropic. Software Engineer at Educative (3M+ users). Top Rated Plus on Upwork with a 100% Job Success Score across 20+ jobs and 1,500+ hours.
STACK
Next.js, React, TypeScript, Javascript, Python, FastAPI, Node.js, Supabase, PostgreSQL, LangChain, OpenAI API, Claude, ElevenLabs, WebRTC, Pinecone, pgvector, Vercel, AWS.
NOT A FIT IF
You want a no-code chatbot, an AI prototype with no path to production, or the cheapest developer available.
Send a message with what you're building, or where you're stuck. I'll assist you in taking it from there.
Steps for completing your project
After purchasing the project, send requirements so Adan can start the project.
Delivery time starts when Adan receives requirements from you.
Adan works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements & Kickoff
Share your project requirements, any designs or references, and your expected timeline. We review everything and confirm the full scope before starting.
Planning & Architecture
We finalize the component structure, state management approach, API integration plan, and delivery roadmap. You know exactly what gets built and when.