Hardware Security Engineer - Supply chain

Status
Paris, France +1
Full time
Hybrid
Compensation is not specified
Role
Security Engineer
Description

At our organization, we are constantly pushing the boundaries of innovation and are committed to ensuring digital ownership in a dynamically evolving world. Our goal is to achieve true freedom and revolutionize the way security is defined in the digital age. We are looking for individuals who are passionate about exploring new technologies and creating products that set the standard for security.

Established in 2014, we are a global leader in digital assets and Web3, with a significant portion of the world's crypto assets secured through our Ledger Nanos. With a headquarters in Paris and Vierzon, and additional offices in the UK, US, Switzerland, and Singapore, we have a diverse team of over 700 professionals dedicated to developing products and services that empower individuals and businesses to securely engage with crypto assets. Our Ledger hardware wallets have already reached over 6 million units sold across 200 countries.

As part of the Donjon team responsible for the security of all Ledger products, the role of a security engineer involves testing our products and ecosystem rigorously to ensure our industry-leading position.

Primary Responsibilities

  • Conduct research on cutting-edge hardware supply chain attacks
  • Evaluate and model threats related to supply chain processes for Ledger hardware wallets
  • Develop and implement security best practices for supply chain processes in manufacturing and distribution
  • Write and maintain code for realistic attacks and present findings at various conferences worldwide

Desired Qualifications

  • Strong background in IoT or smartcard security
  • Familiarity with electronic manufacturing processes
  • Experience in embedded system development
  • Basic understanding of the cryptocurrency ecosystem is a plus

Benefits

  • Stock options to be part of our success and growth
  • Hybrid work policy for flexibility
  • Company-wide outings and social events
  • Comprehensive health insurance coverage
  • Opportunities for personal development, coaching, and fitness
  • Five weeks of paid leave annually
  • Access to high-performance office equipment including Apple products
  • Transportation reimbursement
  • Employee discount on our products

We are committed to fostering an inclusive work environment and provide equal opportunities to all individuals regardless of 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

Looking for a blockchain developer

Whiteman Air Force Base, USA
Whiteman Air Force Base, USA
Full time
Remote
We are looking for a skilled Full-Stack Blockchain Developer to help maintain, improve, and extend the RaiseHive platform. This role involves working across the frontend, backend, and smart contract layers to ensure a stable, secure, and scalable Web3 application.
The ideal candidate has hands-on experience with React, Node.js, Ethereum smart contracts, and real-world Web3 integrations.
Framework: React 18.2 (Vite 3)
Styling: Tailwind CSS 3.4, NextUI
Animations: Framer Motion
Web3: Thirdweb SDK v4, Ethers.js v5
Routing: React Router DOM v6
State Management: React Context API
Libraries: React Markdown, React Image Gallery, Replyke (comments), React Toastify
Runtime: Node.js
Framework: Express.js
Database: MongoDB Atlas (Mongoose ODM)
Email: Nodemailer
Scheduling: Node-cron
Logging: Pino
Network: Ethereum
Smart Contracts: Solidity ^0.8.19
Development Tools: Hardhat
Libraries: OpenZeppelin, Thirdweb Contracts
Wallet Integration: MetaMask
Frontend
Strong proficiency in React (hooks, context, routing)
Experience with Vite or modern build tools
Solid knowledge of Tailwind CSS and responsive design
Experience using component libraries (NextUI, Material UI, etc.)
Backend
Strong experience with Node.js and Express
Proficiency with MongoDB and Mongoose
REST API design and implementation
Environment configuration and deployment awareness
Blockchain & Web3
Hands-on Ethereum development experience
Solidity smart contract development
Experience with Ethers.js / Thirdweb SDK
Understanding of smart contract security and gas optimization
MetaMask wallet integration and transaction handling
General
JavaScript (ES6+)
Git version control
Async programming and debugging skills
Strong problem-solving ability
Payment in Crypto
125
Monthly
See details

Rust/blockchain

Houston, USA
Houston, USA
Part time
Remote
I am seeking a world-class Systems Engineer / Rust Architect to build a proprietary asset extraction engine on the Solana network. This is not a "Web3 App" or a "DEX UI." This is a purely backend, low-latency machine designed to capture micro-value from market volatility.​The system mimics a "digital sluice," using high-precision math to harvest fractional differences that standard rounded-math bots ignore. We are scaling from a prototype to a 30-node distributed network managing 100+ concurrent execution "hands."​Core Technical Requirements​Low-Level Rust Mastery: You must be an expert in the Tokio runtime, asynchronous programming, and memory-safe mathematical operations.​Solana Network Physics: Deep understanding of the Sealevel runtime, custom WebSocket/Lumen bridges, and avoiding gRPC bottlenecks.​Jito & MEV Optimization: Proven experience with Jito Bundles, transaction shredding, and tip-optimization to ensure first-block inclusion.​Distributed Orchestration: Ability to architect a master-node system that manages 30+ regional nodes with seamless failover and zero-loss state management.​Precision Math: All logic must operate on u64 integers (Lamports) to avoid floating-point rounding errors. We do not "round" to the dollar; we capture the 9th decimal.​Key Responsibilities​Engine Hardening: Audit and optimize the core Rust logic for 0-latency execution.​Node Orchestration: Build the "Master Switch" to deploy, monitor, and update 30 nodes across global regions simultaneously.​The "Tax" Logic: Implement a secure, automated "sweeper" protocol that collects fractional value from all child-nodes into a master treasury without interrupting execution.​Redundancy: Ensure the system is "Anti-Fragile"—if a validator or node fails, the 50-drop safety protocol must trigger an instant failover.
Payment in Crypto
3,000
Monthly
See details

Frontend Developer

Full time
Remote
Create intuitive, responsive user interfaces that deliver exceptional user experiences across our platform. You'll transform designs into pixel-perfect, performant applications while ensuring smooth interactions and real-time data visualization. We're looking for developers who are passionate about user experience, have an eye for design details, and can build complex web applications that handle large datasets efficiently while maintaining responsive, accessible interfaces across all devices and browsers.
Responsibilities:
Build responsive, performant web applications
Implement designs with attention to UX detail
Integrate with backend APIs and manage application state
Ensure cross-browser compatibility and accessibility
Payment in Crypto
2,500-3,000
Monthly
See details

Quant Dev

Full time
Remote
Build and maintain infrastructure for quantitative research and trading systems, bridging the gap between research and production. You'll work at the intersection of software engineering and quantitative finance, building high-performance systems for backtesting, simulation, and live trading. This role requires strong programming skills, understanding of financial markets, and the ability to translate complex mathematical models into reliable, production-ready code that executes strategies in real-time with minimal latency.
Responsibilities:
Develop backtesting frameworks and research tools
Implement trading algorithms and execution systems
Optimize code for performance and low latency
Collaborate with researchers to productionize strategies
Payment in Crypto
3,000-3,500
Monthly
See details

Full Stack Engineer

Full time
Remote
Build and maintain features across the entire stack, from user interfaces to backend services and databases. You'll work on diverse problems spanning frontend frameworks, API design, database optimization, and infrastructure. We're looking for versatile engineers who enjoy ownership of features from conception through deployment, collaborating closely with product and design teams to deliver exceptional user experiences while maintaining robust, scalable backend systems.
Responsibilities:
Develop end-to-end features from frontend to backend
Collaborate with design and product teams on user experience
Write clean, maintainable code with comprehensive testing
Participate in code reviews and technical discussions
Payment in Crypto
3,000-3,500
Monthly
See details