Senior Staff Front-end Engineer (f/m)

Status
Paris, France
Full time
Hybrid
Compensation is not specified
Role
Frontend Engineer
Description

We are dedicated to revolutionizing the accessibility and security of digital assets globally. Join us on this meaningful journey.

Established in 2014, Ledger serves as the worldwide hub for digital assets and Web3. Safeguarding over 20% of the world's cryptocurrency assets using our Ledger Nanos, we operate from headquarters in Paris and Vierzon, with additional offices in the UK, US, Switzerland, and Singapore. Our team of over 700 professionals tirelessly develops an array of products and services, empowering individuals and businesses alike to securely transact, store, exchange, grow, and oversee their digital asset portfolios. Our Ledger hardware wallets have already seen over 7 million units sold, spanning 200 countries.

At Ledger, our work ethic is grounded in values that set us apart - Pragmatism, Audacity, Commitment, Trust, and Transparency. Learn about the impact our team makes from firsthand accounts shared by our employees.

Ledger has innovated the Ledger Live application to facilitate the management of blockchain-powered assets comprehensively. This app, crafted using React.js (Electron for Desktop and React Native for Mobile), supports various blockchains, coins, NFTs, integrates DApps, and offers an SDK for seamless 3rd-party integration. Our hardware wallets provide the necessary security backing for managing your assets via Ledger Live. The project is sectioned into distinct teams, each focused on specific software components.

To support our company's progressive growth, we are seeking a seasoned professional to join the Wallet Experience business unit as a part of the Live Hub squad. As a Senior Staff Engineer in Front-End development, your core responsibility will revolve around crafting and sustaining the portfolio and account management UI flows.

Your primary obligations will include:

  • Spearheading the technical execution of desktop and mobile projects for Ledger Live Applications.
  • Collaborating actively with developers, QA testers, designers, and product teams associated with Ledger Live.
  • Demonstrating proactive initiative and proposing technical solutions.
  • Designing features in line with best practices, going from unit testing to end-to-end testing.
  • Engaging in code reviews to ensure quality control.
  • Ensuring the quality standard of Ledger's UI/UX framework.
  • Mentoring team members and promoting technical advancement, enforcing high standards within the team.
  • Contributing solely to Open Source projects consolidated within our monorepo.
  • Sharing insights and knowledge within Ledger and beyond.

Preferred qualifications:

  • A minimum of 10 years in software development.
  • A curious mindset with a collaborative approach.
  • Proficiency in JavaScript and TypeScript.
  • Extensive experience in React.js development, tools, and libraries.
  • Sound understanding of testing strategies.
  • Adequate knowledge of UI/UX practices within software development.

Desirable skills:

  • Familiarity with React Native and/or Electron.
  • Exposure to Web3 concepts and technical frameworks.
  • Experience in managing shared component libraries.

Perks on offer:

  • Ownership through stock options as we thrive together.
  • Hybrid work policy for flexibility.
  • Annual company outings and social gatherings.
  • Comprehensive health insurance packages covering medical, dental, and vision.
  • Personal development opportunities, coaching, and fitness amenities.
  • Generous paid leave allowance of five weeks annually.
  • High-performance office equipment, including Apple products.
  • Transportation reimbursement.
  • Employee discounts on our product range.

We are proud to foster an inclusive work environment, welcoming individuals without bias based on gender, ethnicity, religion, sexual orientation, social status, disability, or age.

Skills Required
Avatar
Ledger
Company size
Not specified
Location
United States
Description
Not specified
Status

More Full-time Jobs

Show more

Junior / Middle Metaverse Developer (Unity / Web3 / VR)

Manzhouli, China
Manzhouli, China
Full time
Remote
We are looking for a Metaverse Developer to help build interactive virtual environments and immersive digital experiences. The role involves developing 3D worlds, integrating Web3 technologies, and working with modern tools for real-time applications.
You will work with Unity, WebGL, and blockchain technologies to create engaging metaverse features and optimize them for performance across different devices. The developer will collaborate with designers and backend engineers to deliver scalable and stable products.
Requirements include experience with Unity and C#, understanding of 3D development, Web3 or blockchain basics, and familiarity with Git and API integration. Experience with VR/AR, NFTs, or multiplayer systems is a plus.
We offer remote work, flexible hours, crypto payments, and the opportunity to build innovative metaverse products.
Payment in Crypto
1,500-3,500
Monthly
See details

Junior/Mid Decentralized Infrastructure Engineer

Full time
Remote
Role:
Help build and scale decentralized infrastructure: contribute to compute networks, protocols, storage layers, and orchestration tools that power AI agents and open digital systems. You’ll write code, run tests, fix bugs, and ship real features fast.
Skills & Requirements: 
1–3 years in blockchain infra, distributed systems, or high-scale compute (or strong personal projects) 
Solid Python / Rust / Go skills 
Interest in libp2p, IPFS, GPU orchestration, or decentralized compute 
Quick learner who ships clean code and loves performance/cost challenges
Salary:
$110,000 – $165,000 USD base + meaningful equity (portfolio startup) + full benefits + Sirex carry
Description:
Sirex.vc doesn’t just invest — we plug strong builders straight into our portfolio companies.
This is your chance to work on the real infrastructure behind autonomous agents and the open digital economy. Full support from the Sirex team, fast growth, zero bureaucracy.
High risk. Zero apologies.
Payment in Crypto
9,167-13,750
Monthly
See details

Web3 Fullstack Developer

Part time
Remote
🌐 About Us
Neonflick is a tech organization specializing in Web3 development.
We believe Web3 solutions are not as popular as they could be — mainly due to complexity. Our mission is to simplify the user experience and make decentralized technology more accessible and easy to use for everyone.
🚀 About the Role
We are looking for a Web3 Fullstack Developer who is passionate about decentralized technologies and excited to contribute to building meaningful Web3 products. You will work on developing new products, improving existing ones, and fixing bugs, all while proposing innovative ideas to enhance our platform.
🔹 Responsibilities
Develop functional and user-friendly Web3 products
Improve and optimize existing products and features
Identify and fix bugs or issues in the system
Propose and implement new ideas for product development
Collaborate with the team to ensure high-quality software delivery
🔹 Requirements
Strong interest in Web3 / blockchain / decentralized technologies
Fullstack development experience (frontend + backend)
Experience with smart contracts and decentralized frameworks is a plus
Problem-solving skills and attention to detail
Ability to work independently and proactively
🔹 What You Get
Early-stage involvement in a Web3 tech organization
Influence over product development and feature design
Opportunity to build experience and a portfolio in the Web3 space
Potential long-term collaboration and future compensation as the project grows
A chance to contribute to making Web3 simpler and more accessible
⚠️ Important
This is an unpaid position. We are looking for someone motivated by vision, learning, and long-term impact rather than immediate salary.
If you are passionate about Web3 and building meaningful decentralized products, we’d love to hear from you.

Junior AI Engineer

Full time
Remote
Role:
Join one of our fast-growing portfolio startups and help build simple AI features. You’ll work with large language models, create basic automations and chat tools, test ideas, fix small bugs, and integrate AI into everyday products.
Skills & Requirements: 
0–2 years of experience (fresh graduates or self-taught welcome) 
Basic Python knowledge 
Interest in AI, LLMs or chatbots (personal projects are a big plus) 
Quick learner who enjoys trying new things 
Good English for team communication
Salary: $95,000 – $135,000 USD base + equity in the startup + full benefits
Description:
Sirex.vc not only invests — we actively help our portfolio companies hire great people. This Junior AI Engineer role is inside one of our AI-native startups. You’ll get real hands-on experience, learn from the best, and build things users actually use — all with full support from the Sirex team.
High risk. Zero apologies.
Payment in Crypto
7,917-11,250
Monthly
See details

Full Stack Developer – Kick-to-Earn Gaming Platform

Istanbul, Türkiye
Istanbul, Türkiye
Full time
Remote
About the Project
We're building a mobile-first competitive gaming platform where players step onto the virtual field and earn rewards through penalty kick matches. The platform includes real-time gameplay, tournaments, leaderboards, an in-app store, token management (deposit/withdraw), daily quests, and a player progression system. Think casual gaming meets Web3 — fast, competitive, and rewarding.Current StateThe frontend is actively under development with a strong foundation already in place:
~30+ reusable UI components (modals, tabs, cards, buttons, inputs, badges, etc.)
Multiple feature modules: penalty game, tournaments, leaderboard, user profiles, store, token management
Figma-driven design system with a polished dark-themed UI
Animated goalkeeper characters using Lottie/dotLottie with SVG body parts
SPA routing and responsive mobile-first layouts
Tech Stack
Frontend: Next.js 16, React 19, TypeScript, Tailwind CSS 4
Animations: Lottie / dotLottie
Design Pipeline: Figma with MCP integration for design-to-code workflow
Tooling: ESLint, PostCSS, Turbopack
What You'll Do
Build and maintain frontend features with pixel-accurate implementation from Figma designs
Architect and develop backend services (APIs, authentication, game logic, matchmaking, token transactions)
Integrate blockchain/token functionality for the earn-and-spend economy
Design and manage the database layer (user data, match results, tournament state, transaction history)
Set up real-time infrastructure for live matches and leaderboard updates
Write clean, scalable TypeScript across the full stack
Collaborate closely with design to maintain high visual fidelity
Requirements
3+ years of production experience with React and Next.js
Strong TypeScript skills
Solid backend experience (Node.js, Express/Fastify/Hono, or similar)
Database design and management (PostgreSQL, MongoDB, or equivalent)
Experience building and consuming REST or GraphQL APIs
Understanding of real-time systems (WebSockets, SSE, or similar)
Proficiency with Tailwind CSS and responsive, mobile-first design
Comfort working from Figma designs with attention to detail
Nice to Have
Experience with Web3 / blockchain integrations (wallet connection, token transactions)
Familiarity with Lottie animations and interactive game-like UIs
Experience with matchmaking or game server architecture
Knowledge of payment/transaction systems
Experience with CI/CD pipelines and deployment (Vercel, Docker, etc.)
If you enjoy building products at the intersection of gaming and crypto, and you care about clean architecture and polished UI, we'd love to hear from you.Feel free to adjust the engagement type, compensation details, timezone preferences, and any company-specific info before posting.
 
 
 
Payment in Crypto
1,200
Monthly
See details