Nicolas T.

Senior Full-Stack Engineer | Blockchain

Salaire / Taux journalier

Minde, Portugal

Freelance

Expertises

TypescriptReactPostgreSQLSolidityPythonReact NativeNodeNextPlaywrightRESTful APIsMicroservicesBlockchainLinuxIngénieur réseauDockerCommunity managementProduct OwnershipScrapingÉvénementielCybersécuritéJavascriptRequêtes SQLFlaskAWSAWS LambdaMariaDB

Langues

Anglais (Courant)

À propos

Introduction

Full-stack engineer with 7+ years building fintech and blockchain products, specializing in TypeScript, React, and Web3 infrastructure. Co-founded ventures serving 8500+ businesses, won 5 major hackathons, and architected complete systems from smart contracts to mobile apps. I deliver end-to-end solutions for startups—from treasury management systems to DeFi platforms—with focus on secure financial integrations and scalable architecture.

Liens

Expérience de travail

Full-stack Engineer

Stealth StartupFreelance

déc. 2025 - Présent

11 mois

Delaware, Ohio 43015, États-Unis

Working with an early-stage startup on a treasury management system connecting crypto and fiat accounts for startups. Scope includes: - Building treasury workflows and automation features - Building market-maker agregator - Connecting crypto wallets, exchange accounts and euro accounts - Designing backend flows around account events, balances, transfers and automation triggers - Building product features across frontend and backend - Integrating external financial/crypto services - Improving reliability, validation and error handling across money movement flows Tech: TypeScript, React, Node.js, oRPC, Transak, crypto APIs, event-driven architecture.

Co-founder

Vencer

sept. 2025 - mars 2026

7 mois

Portugalete, Biscaye, Espagne

Co-founded Portuguese public procurement platform, streamlining tender discovery for SMEs. Built complete service from scratch: end-to-end product ownership and technical leadership. Architected full-stack solution: TypeScript backend with Hono, PostgreSQL database, frontend with React. Developed automated scraper with Playwright for Portuguese public tender aggregation. Implemented AI-powered search and interactive chat interface for contract analysis. Bootstrapped entire technical infrastructure and product. Tech: TypeScript, Hono, PostgreSQL, Playwright, LLM integration

Full-stack Engineer

Rauva

avr. 2025 - oct. 2025

7 mois

Lisbonne, Portugal

Building next-generation fintech infrastructure for European SMEs - Architecting scalable REST APIs and microservices - Implementing secure payment integrations (Swan, Sibs) - Leading technical decisions for 8500+ active business customers Tech: TypeScript, React, PostgreSQL with Sequelize, Netlify, lambddas

Co-fondateur

Bangr labs

sept. 2022 - janv. 2025

2 ans 5 mois

Paris, France

Co-founded DeFi mobile app democratizing DeFi access through account abstraction - Led 3-person technical team, full product ownership from concept to production - Built complete stack: React Native app + Next.js/TypeScript backend + Solidity smart contracts - Architected smart contract wallet system with transaction relay infrastructure - Won 5 major hackathons with interoperability and wallet infrastructure solutions Tech: React Native, TypeScript, Solidity, Next.js, Prisma, PostgreSQL, Ethers.js Awards: - ETHCC Hack 2022 - 1st place (Nuclear Bridge: interoperability protocol) - ETHBerlin 2022 - Hyperlane 1st prize (Boomerang: browser extension for painless crosschain experience) - ETHLisbon 2022 - Safe award (EasySafe: simplified wallet interface) - ETHDenver 2023 - Axelar 1st prize + Covalent award (DeFiPooler: cost pooling protocol)

Founder | Hack'UTC Association

Université de Technologie de Compiègne (UTC)

juin 2019 - oct. 2022

3 ans 5 mois

60200 Compiègne, France

Founded cybersecurity student association at Université de Technologie de Compiègne - Built community of cybersecurity enthusiasts through workshops and meetups - Organized technical talks, experience sharing sessions, and hands-on training - Developed CTF (Capture The Flag) platform for cybersecurity challenges - Managed association operations under Technology & Entrepreneurship division Skills: Community Building, Cybersecurity, Event Management, Platform Development, Leadership

Community Manager and Technical Support

Klimatas B.V.

juil. 2019 - juil. 2020

1 an 1 mois

Remote, Oregon 97458, États-Unis

Drove community growth and provided technical support for blockchain masternode application - Managed Discord and Telegram communities, fostering user engagement and adoption - Provided technical support through ticketing system, collaborating with development team - Created social media content and facilitated discussions around masternode technology Skills: Community Management, Technical Support, Discord/Telegram, Blockchain, International Team

Développeur Blockchain

onepoint

sept. 2018 - janv. 2020

1 an 5 mois

Paris, France

Developed blockchain proof-of-concepts within TechStudio innovation community - Built decentralized applications on Ethereum and Stellar networks - Implemented smart contracts and DApp frontends (Solidity, Web3.js, Stellar SDK) - Authored technical RFCs and delivered public presentations on blockchain concepts - Worked autonomously on R&D projects for enterprise blockchain adoption Tech: Solidity, Python, JavaScript, Ethereum, Stellar, Web3.js, SQL

Administrateur systèmes

Nexton Consulting

juil. 2017 - oct. 2018

1 an 4 mois

Région de Paris, France

Managed IT infrastructure and automated deployment processes in a growing company: 150 to 350 people in 1.5 years - Administered Windows/Linux servers and an Active Directory environment - Deployed network services, VLANs, and Wi-Fi infrastructure - Automated system tasks using Python and Bash scripting - Managed hardware inventory with OCS Inventory Tech: Active Directory, Python, Bash, Linux, Windows Server, Networking, VMWare, Fortinet


Formation

Université de Technologie de Compiègne (UTC)

Diplôme d'ingénieur, Génie Informatique

2018 - 2021

3 ans 1 mois

Université Paris 13

DUT Informatique, Informatique

2016 - 2018

2 ans 1 mois

Diplôme universitaire technologique d'informatique. Deuxième année par apprentissage.


Licences et certifications

CLES B2

Délivré le : juil. 2026

Certifié par Ministère de l'Enseignement supérieur, de la Recherche et de l'Espace

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