Ledger - Senior Software Architect, Blockchain & DeFi
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Requirements
• 10+ years of experience in technical design, development, execution, testing and delivery. • Deep expertise/interest in backend system architecture, algorithm development, and optimization for high-throughput, high-reliability transactional services. • Profound, hands-on knowledge of how various blockchain technologies (e.g., Ethereum, EVMs, non-EVMs) work under the hood, and a curiosity to investigate deeply complex, distributed systems. • Ability to work effectively with internal teams to define scope, goals, project plans and deliverables. • Team player with excellent interpersonal skills and ability to work cross-functionally. • Excellent presentation and written communication. • Engineering degree. • Requirements based on target engineering team • Expert knowledge of backend development and architecting scalable, secure web services (e.g., Node.js, Python, Scala). • Experience with advanced software development practices and patterns for distributed, fault-tolerant systems. • Deep understanding of smart contract security, token standards (ERC-20, ERC-721, etc.), and the architecture of common DeFi primitives (DEXs, Lending Protocols, Yield Farming). • Practical experience with blockchain node interaction (RPC, WebSockets) and building robust, high-availability data indexing and transaction services. • Strong knowledge of database technologies (SQL/NoSQL) and message queues for asynchronous data processing in backend systems. • Open source experience or contributions, especially in the blockchain/crypto space. • Expert knowledge of cryptography and security practices applied to transactional systems. • Prior experience contributing to or integrating with major DeFi protocols. • At Ledger, we are dedicated to continually investing in our employees which is why we offer more than just salaries; we provide comprehensive compensation packages that include a wide range of benefits. Here are some of the benefits you can look forward to: • Flexible work options - Our hybrid policy allows employees to work from home up to 3 times per week • Health & Wellness support - Health and Life Insurance. • Financial growth opportunities - Employees can become shareholders in Ledger as well as other financial benefits depending on your country of work. • Commuter allowance - Ledger offers a commuter allowance to contribute to your preferred means of transportation. • Learning & Development - A comprehensive suite of training solutions providing a personalised learning experience for every employee. • For regionally specific benefits, your Talent Acquisition contact will be able to provide you with more information. • We’re committed to building an inclusive hiring process. If you need any adjustments or accommodations, just let us know, we’ll do our best to support you.
Responsibilities
• Lead the technical scoping, design, and architecture for integrating new blockchain protocols and tokens into the Ledger ecosystem. • Drive the research, understanding, and integration of complex Decentralized Finance (DeFi) protocols (e.g., DEXs, lending, staking) with Ledger services, ensuring security and scalability. • Collaborate closely with engineering leads, product managers and delivery managers to ensure design on most important initiatives are properly done and of good quality. • Partner with product teams to define, develop and implement development requirements for new product features. • Help Engineering managers identify, tackle and prioritize most critical technical debt in our transactional services stack. • Contribute hands on to the development activities of the squads being supported. • Become a Ledger solution expert to thoroughly understand all use-case scenarios, especially on areas identified in this job description. • An architect is also responsible for some transversal activities, including: • Be involved in our open source projects and foster our developer community by contributing and maintaining key Open Source software, and helping build our platform strategy. • Help build visibility on the roadmap by contributing to gross estimates of implementation difficulty. • Help contribute to Ledger visibility by presenting in conferences or in front of customers our technology know-how.
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