WhoDevelop
Technical Consulting & Software Architecture
Blockchain | DevOps | Web3 | UK Registered Company
We build accessible, high-performance digital experiences for the decentralized web.
WHO DEVELOP LTD is a UK-registered IT consultancy with over 15 years of experience building enterprise-grade solutions across the blockchain ecosystem.
Our work lies at the intersection of decentralized technology and robust engineering, creating systems that are not only innovative but meticulously built for security, scalability, and performance.
Led by Sebastien Bramille, Technical Lead (consultancy) at LI.FI, we supervise remote teams of fullstack developers and DevOps experts, maintaining and enhancing cross-chain infrastructure for the Web3 ecosystem.
We've delivered solutions across diverse sectors — from fintech startups and health tech companies to blockchain consultancies and enterprise solutions.
About Us
Building the future of decentralized technology
WHO DEVELOP LTD | Est. 2014 | London, UK
2014
Founded
15+
Years Experience
50+
Projects Delivered
10+
Blockchain Protocols
Core Technologies
WHO DEVELOP LTD brings over 15 years in software development and a deep specialization in blockchain technology, offering a unique combination of technical expertise and business acumen to every project.
Our journey spans from early-stage startups to enterprise solutions, working across multiple blockchain ecosystems including Ethereum, Bitcoin, EOS, IOTA, Ripple, Quorum, Corda, and Hyperledger. This breadth of experience allows us to recommend and implement the right technology stack for each unique challenge.
As technical leaders, we've built and managed engineering teams, established development best practices, and delivered products that handle billions in transaction volume. Our approach combines technical excellence with pragmatic problem-solving.
Beyond blockchain, we maintain deep expertise in cloud infrastructure (AWS, GCP, Azure), container orchestration (Kubernetes, Docker), and modern frontend development (React, Next.js, TypeScript). This full-stack capability enables us to deliver complete solutions.
Certifications & Recognition
- CybSafe Certification in Security Awareness
- StructureFlow - Product of the Year, ALM European Legal Tech Awards 2025
Experience
Where deep tech meets a human mindset.
Technical Lead (consultancy) · LI.FI
Supervise a remote team of 4 Fullstack developers and DevOps experts, maintaining and enhancing jumper frontend and backend. Lead frontend development focusing on Next.JS, React, WebSocket, and Web3 integration.
Head of Engineering · StructureFlow
Managing a team of Fullstack developers and DevOps, doing business prioritization in relation to the Product Owner. Responsible for building, scaling, and protecting the product.
Blockchain Developer · Quant Network
Worked on interoperability platform cross-blockchains including Ethereum, Bitcoin, EOS, IOTA, RIPPLE, Quorum, Corda, and Hyperledger. Built Dapps with Web3 and implemented microservices architecture.
Fullstack Blockchain Developer · Applied Blockchain
Development firm/consultancy helping companies realize blockchain projects. Smart contract development, rapid prototyping, and coordinating development work in small teams.
Founder & CTO · Atchy
Built an application in NodeJS/React-Redux with full PCI Compliance Vault, AES encryption, serverless architecture on AWS Lambda, and blue-green deployment.
What I Do
Our collection of tech services spans every stage of the transformation process.
Contact
Let's talk about your project
We're always interested in hearing about new projects and opportunities. Whether you need blockchain expertise, full-stack development, or technical consulting, let's discuss how we can help.
Location
124 City Road, London, EC1V 2NX