You will get a modern MVP for your AI-powered SaaS website
Rising Talent
Rising Talent
Project details
You have an idea for a new AI website or platform, but you need a developer to jump in and bring it to life! Well, here I am — I'm a full-stack engineer (with a focus on AI products) in the United Kingdom who has worked at multiple startups (including a Y Combinator company) and knows exactly how to create modern web apps that your users will come to love. I write neat, efficient code and I do it super fast, so together we can turn your vision into reality within a matter of weeks.
My preferred tech stack is Next.js with Supabase, and using CSS modules for styling. But I've used pretty much every modern tool available so I'm comfortable with a different setup if you'd prefer.
Please get in touch with any questions!
My preferred tech stack is Next.js with Supabase, and using CSS modules for styling. But I've used pretty much every modern tool available so I'm comfortable with a different setup if you'd prefer.
Please get in touch with any questions!
What's included
| Service Tiers |
Starter
$2,000
|
Standard
$4,000
|
Advanced
$8,000
|
|---|---|---|---|
| Delivery Time | 14 days | 21 days | 28 days |
Number of Revisions | 2 | 4 | 8 |
Number of Pages | 6 | 12 | 18 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | ||
Source Code |
Optional add-ons
You can add these on the next page.
Custom ML features
(+ 7 Days)
+$2,000Frequently asked questions
7 reviews
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GN
Gramm N.
Feb 7, 2026
React/Supabase Developer Needed for Payment System Optimization & Data Migration
PG
Prisma G.
Jan 14, 2025
Developer for AI projects
One of the most skilled guy I've ever met. Fast, precise and proactive freelancer!
SK
Steven K.
Dec 23, 2024
Next.js Website with 2 API Integrations
William is fantastic! Definitely hire him! He made a realistic proposal and was able to complete it on time and on budget. He saw the vision of the project and when he faced problems, he did the research and communicated tangible solutions. You will not be disappointed. I would hire him again.
SS
Saif S.
Apr 27, 2024
Full-Stack Developer for MVP for a secure data storage solution
I needed to develop an MVP for a project and hired William after reviewing his proposal and discussions about my expectations.
Overall, William impressed me with his professionalism and commitment to delivering high-quality work.
I noted that William has strong technical skills, and did his best to understand the project requirements, adding in his expertise to help find more efficient solutions. Furthermore, when I suggested using new tools or libraries that he had not used before, William was very adaptable, and implemented these into the stack.
When discussing technical details, William tailored technical explanations to my level of understanding, which was critical, as it helped me be engaged in the MVP development. Furthermore, William set up the entire system in a way that was easy for me to understand and manage going forward, which speaks volumes about his approach to client satisfaction and service delivery.
Throughout the project, William maintained excellent communication, keeping me updated with regular progress reports. He was consistently professional in all interactions, providing insights and clear explanations at each milestone.
When changes in scope occurred (primarily due to my interference), William was straightforward about what could realistically be achieved within the desired timelines. He showed dedication to meeting agreed deadlines, making well-reasoned adjustments as needed without compromising the project's integrity.
Overall, the MVP William developed is technically solid and aligns with my current needs.
Therefore, based on my experience, I would highly recommend William to anyone looking for a competent, professional, and reliable full-stack developer. His work ethic and output quality are exceptional.
Overall, William impressed me with his professionalism and commitment to delivering high-quality work.
I noted that William has strong technical skills, and did his best to understand the project requirements, adding in his expertise to help find more efficient solutions. Furthermore, when I suggested using new tools or libraries that he had not used before, William was very adaptable, and implemented these into the stack.
When discussing technical details, William tailored technical explanations to my level of understanding, which was critical, as it helped me be engaged in the MVP development. Furthermore, William set up the entire system in a way that was easy for me to understand and manage going forward, which speaks volumes about his approach to client satisfaction and service delivery.
Throughout the project, William maintained excellent communication, keeping me updated with regular progress reports. He was consistently professional in all interactions, providing insights and clear explanations at each milestone.
When changes in scope occurred (primarily due to my interference), William was straightforward about what could realistically be achieved within the desired timelines. He showed dedication to meeting agreed deadlines, making well-reasoned adjustments as needed without compromising the project's integrity.
Overall, the MVP William developed is technically solid and aligns with my current needs.
Therefore, based on my experience, I would highly recommend William to anyone looking for a competent, professional, and reliable full-stack developer. His work ethic and output quality are exceptional.
JM
Joey M.
Nov 29, 2023
Make a presentation based SAAS website
William is very professional, is great at communicating your project needs and is very good at what he does. He helped me produce a prototype within a few days. Had a great experience overall and would recommend working with William!
About William
Full-stack + LLM engineer | AI agents, SaaS MVPs | 5yrs at AI startups
100%
Job Success
Bath, United Kingdom - 8:58 pm local time
What I work on:
- LLMs & generative AI: OpenAI, Anthropic, ElevenLabs, FAL, Modal, Gemini
- Agentic workflows, tool-use, RAG, vector databases, Pinecone
- Image & video generation (Flux, Stable Diffusion, ComfyUI, fine-tuning, ControlNets)
- Voice & audio (Whisper, ElevenLabs, Cartesia, HeyGen)
- Frontend: React, Next.js, TypeScript, Tailwind, Vite
- Backend: Node.js, Python, FastAPI, Supabase, PostgreSQL
- Cloud & infra: Vercel, AWS, GCP, Kubernetes
Where I've worked:
🪄 Glif (2024–2026) — One of three engineers building Glifchat, an AI agent platform that has since become the core product of the company (valued at $100m). Built character and memory systems with Anthropic and Vercel, plus an agent builder that intelligently selects its own tools. Agentic image and video generation software for content creators and marketers.
🎨 AlpacaML (2023–2024, acquired by Captions) — First developer hired. Built the full product — model training platform, inference infra, Next.js web app, Photoshop plugin. Scaled from 5k to 170k users. Fine-tuning LoRas and ControlNets for Stable Diffusion.
🦾 Mystic AI (2021–2022, YC W21) — Built one of the first public APIs for generative AI. Deployed inference pipelines for GPT-J, DALL-E Mini and others, serving 2.5M+ requests. ML deployment across an in-house GPU farm.
Steps for completing your project
After purchasing the project, send requirements so William can start the project.
Delivery time starts when William receives requirements from you.
William works on your project following the steps below.
Revisions may occur after the delivery date.
30 minute consultancy call / video call (optional)
If you want, we can spend half an hour discussing the project and making sure we're both on the same page before I dive in on building out your website. If you'd prefer to discuss over text, that's fine with me too.
Initial designs and layout
I'll send you some screenshots of a 'skeleton' of your app so that you can approve the shape of the website. And we can make any high-level adjustments then!