Freelancer profile translated to English.

Description

Next.js | React.js | Typescript Full-Stack Developer specializing in Web3

Portfolio: wkieran.me

Looking for reliable, clear, and fast development to launch or accelerate your digital product. I build high-performance applications withNext.js**, **React.js**, **Typescript**, and mastered **Web3integrations.

I work on modern web applications, dashboards, SaaS platforms, and products integrating blockchain connectors. I cover design, development, deployment, and continuous optimization. I useNext.jsandReact.jsfor fast interfaces, Typescript for a stable foundation, and myWeb3skills (protocols, wallets, existing smart contracts, blockchain APIs) for seamless integrations.

Whether in Web2 or **Web3**, I have worked on MVPs, redesigns, back-offices, crypto payments, scalable architectures, front/back optimizations, as well as automations, dashboards, blockchain data tracking, and various on-chain data-oriented tools.

I offer a turnkey solution: a reliable, maintainable, and scalable product, with simple user journeys and readable code.

My toolkit:Next.js**, **React.js**, **Typescript**, **Node.js**, **Prisma**, **PostgreSQL**, common cloud solutions, and on the **Web3side: **ethers.js**, **wagmi**, standard providers, wallet integrations. Each project is structured, tested, and versioned to ensure a smooth delivery.

If you want to launch a project, define a need, or validate a technical direction, contact me. I can arrange a quick video call to understand your objectives and propose a clear approach. I respond within 24 hours.

Industry field of expertise

Languages

French
Native or bilingual
English
Native or bilingual
German
Conversational

Workplace preferences

Can work on-site

Paris (up to 50km), Lyon (up to 50km), Bordeaux (up to 50km), Lille (up to 50km), Marseille (up to 50km)

Metrix finance
Metrix finance
TECH
September 2024 - Today (1 year and 9 months)
→ Mission Objective:
Development and enhancement of features for a Web3 investment management and simulation application withover 20k monthly users.

→ Achievements:
- Improvement ofoffered DeFi datathrough the development of key features inNext.jsandTypescript, while providing smoother exploration and better performancefor Web3 users.

- Rapid delivery of critical fixes, increasing platformreliability, perceived quality,and uptime, while optimizing code.

- Integration of newDEXsto strengthenfunctional coverage, improve simulation accuracy, and save analysis timefor investors through an expanded Web3 ecosystem.

→ Technical Stack:
Next.js, Typescript, React, tRPC, Subgraphs, Viem
Next.js Typescript Web3 Fullstack Developer DeFi
Yieldbase
Web3 Full-Stack Developer
PRIVATE EQUITY
April 2025 - July 2025 (3 months)
→ Mission Objective:
Develop automation features for aDeFiyield farming platform on Avalanche by automating poolrebalancingtoincrease returnsandreduce maintenance.

→ Achievements:
- Design of an automated rebalancing system improving performance returns and operational efficiency.

- Development of a tracking dashboard to configure automations and monitor operation history.

→ Technical Stack:
Next.js, Typescript, React, tRPC, Viem
Next.js Typescript Web3 Fullstack Developer DeFi
BuildrWealth
Full-Stack Developer
PRIVATE EQUITY
August 2024 - September 2024 (1 month)
→ Mission Objective:
Create a visualization tool for hedging strategies (options, futures, Uniswap V3 LPs) to provide clearer and more actionable analyses.

→ Achievements:
- Complete creation of the interface to offer multi-chart views for a comprehensive understanding of strategies inNext.js.

→ Technical Stack:
Next.js, Typescript, React.js, TailwindCSS
Next.js Typescript Web3 Fullstack Developer DeFi