Defi Engineer Jobs

DeFi Engineer

DeFi Engineer

DeFi Engineer

Senior Operations Engineer DeFi Infrastructure

From $462/yr

Tasks We’re hiring a Senior Operations Engineer to own the reliability, security, and observability of institutional-grade DeFi operations infrastructure. This role is focused on operating production DeFi systems at scale — including vaults, multisigs, on-chain treasury infrastructure, automation pipelines, monitoring, and security tooling across Ethereum and L2 ecosystems. 🔧 What You’ll Work On • Security automation and transaction policy controls • Automation reliability, testing, and failure handling • Monitoring and alerting systems for multi-chain operations • Production-grade DeFi operational infrastructure • Wallet security, vault operations, and transaction validation Requirements Requirements • 5+ years in software engineering • 3+ years in DeFi/Web3 operations • Experience operating multisigs, vaults, or on-chain treasury systems • Strong experience with Safe (Gnosis Safe) SDK and transaction flows • Security tooling integration experience (Hypernative, Blockaid, Forta, etc.) • Strong testing and automation engineering background ⭐ Nice to Have • Datadog, Grafana, PagerDuty, or custom monitoring systems • ERC-4626 vault experience • Fireblocks / BitGo familiarity • Multi-chain operations across Ethereum \& L2s • Rapid prototyping using AI tools

DeFi Engineer

DeFi Engineer

From $10/yr

About Flow Foundation Flow is a layer one blockchain designed from the ground up as a platform for a new generation of Web3 apps, games, and the digital assets that power them. Flow is home today to millions of users and apps from top tier creators including Genies, Cryptoys, Doodles, and Dapper Labs (NBA, NFL, Disney) as well as industry leaders such as Mattel (Barbie, Hot Wheels), LiveNation / Ticketmaster, and many more. Our mission is to take Web3 mainstream by making blockchain technology simple, safe, and delightful for builders and consumers alike. We operate as a distributed, low-hierarchy organization where humble, inquisitive entrepreneurs thrive. Why this role matters Total value locked (TVL) on Flow is growing quickly, and DeFi is a critical catalyst. As a DeFi Engineer you will drive the next wave of decentralized-finance innovation on Flow—shipping novel protocols, strengthening existing integrations, and inspiring builders across the ecosystem. You’ll pair deep DeFi expertise with Flow-native super-powers such as protocol-level account abstraction, Cadence’s capability-based security model, and seamless EVM equivalence to unlock experiences impossible elsewhere. What you’ll do * Build \& ship DeFi primitives – Design, implement, and audit smart contracts for AMMs, lending markets, liquid staking, cross-chain bridges, yield strategies, and novel financial instruments. * Expand DeFi partnerships – Collaborate with leading Web3 teams to port or co-create protocols on Flow, guiding them through architecture, security, and launch. * Level-up existing protocols – Profile on-chain activity, identify UX or economic friction points, and deploy improvements that increase capital efficiency and TVL. * Prototype future-state concepts – Explore account abstraction–enabled UX (e.g., gasless transactions, passkeys) and multi-VM composability to invent the next generation of DeFi experiences. * Advocate \& educate – Publish reference implementations, write deep-dive blog posts, speak at conferences, and mentor community devs to demystify DeFi on Flow. * Security first – Own end-to-end security: formal verification, fuzzing, audits, monitoring, and rapid incident response. About you * Software engineering experience focused on Web3/DeFi (Solidity, Move, Cadence, Rust, etc.). * Hands-on experience shipping and maintaining at least one major DeFi protocol (AMM, lending, bridge, LST, derivatives, etc.) to mainnet. * Strong grasp of smart-contract security patterns, economic/game-theoretic exploits, and incident triage. * Comfort working across the stack: writing Cadence contracts, scripting deployments, instrumenting on-chain analytics, and contributing to dApp front-end. * Curiosity for emerging primitives (restaking, intent-based execution, L2 interoperability) and the creativity to adapt them to Flow’s architecture. * Effective communicator who can translate complex technical ideas to diverse stakeholders. * Bonus: experience with account-abstraction wallets, formal verification tools, or multi-VM execution environments. What we’ll accomplish together * Double the number of high-quality DeFi protocols live on Flow. * 10× TVL growth through improved capital efficiency and seamless cross-chain liquidity. * Set new UX/security standards for consumer-friendly DeFi using Flow’s unique capabilities. * Foster a vibrant community of external DeFi builders and researchers.

Director, Engineering Manager- Digital Asset Management- Blockchain, DeFi

About the position An ideal candidate for this role will bring deep expertise in blockchain technologies to drive design, development and deployment of decentralized systems for financial asset management. The candidate will combine strong leadership and architecture skills with hands-on experience in DeFi protocols, smart contracts, and scalable distributed systems with a passion for enabling business outcomes and developing leaders and associates. The Engineering Manager -will lead a cross-functional team of full stack engineers, collaborate with product managers, architects and business stakeholders for Fidelity Digital Asset Management within Asset management Technology. In this role the individual will play a key role in defining the product and technology roadmap aligned to the business strategy. The candidate will be responsible for fostering a vibrant environment of growth, development, and continuous improvement for the software engineering practices. They will also be responsible for actively seeking feedback and maintaining strong partnership with leadership across business, product and technology. The candidate will be responsible for influencing decisions to improve delivery capabilities and realize business outcomes. The value you deliver will include: Contributing to the delivery of functional capabilities to meet the business goals of offering digital asset based products to our customers Establishing and promoting engineering excellence through compliance to coding standards, security protocols and quality practices Contributing to the definition of the blockchain architecture and system design aligned with business goals and IT blueprint Championing the culture of innovation and research to remain at the forefront of blockchain technology and thought leadership Responsibilities • Contributing to the delivery of functional capabilities to meet the business goals of offering digital asset based products to our customers • Establishing and promoting engineering excellence through compliance to coding standards, security protocols and quality practices • Contributing to the definition of the blockchain architecture and system design aligned with business goals and IT blueprint • Championing the culture of innovation and research to remain at the forefront of blockchain technology and thought leadership Requirements • 12-14 years of software engineering experience; at least 3 years in blockchain development • Proficiency in smart contract development (Solidity, Rust) and auditing, deep understanding of blockchain consensus mechanism, cryptography, tokenomics and transaction lifecycle • Design and implement scalable blockchain based system for tokenization, smart wallets and integration with DeFi protocols for primarily public blockchains like Ethereum, Solana and private DLTs • Lead the development of smart contracts, interoperability between blockchain components and integration with traditional financial systems • Knowledge of cloud-native architecture (AWS) and containerization (Docker, EKS) • Effectively manage delivery timelines for product roadmap along with stakeholder communication • Lead a team of blockchain engineers, smart contract developers and full stack engineers • Promotes and demonstrates a learning mindset by staying abreast of emerging trends in blockchain technology • Committed and inspirational leader capable of developing associates & leaders to achieve their fullest potential within their job family and career goals • Strong in communication, interpersonal and relationship building skills with which you influence decisions and engagement across all levels of the organization. • Proven ability to collaborate across teams, with peers and leadership teams to align with technology objectives, KPI's and standards to accelerate business delivery. • Ability to proactively share your knowledge, expertise and perspectives and nurture a learning culture across your team and the broader organization • Ability to fulfil HR duties such as developing performance plans, setting goals, and providing constructive feedback • Work closely with globally distributed product, engineering and business teams across regions which may include working across time zones and travel for business workshops, planning sessions and meetings Benefits • comprehensive health care coverage and emotional well-being support • market-leading retirement • generous paid time off and parental leave • charitable giving employee match program • educational assistance including student loan repayment, tuition reimbursement, and learning resources to develop your career

Remote Blockchain Engineer – Cross-Border & DeFi

Position: Remote Blockchain Engineer – Cross-Border Payments & DeFi A forward-thinking payment platform is seeking a talented Blockchain Engineer to drive the development of their innovative cross-border payment solutions. This role involves collaborating with product teams, translating technical requirements, and delivering quality code while operating within a flexible hybrid working environment. Ideal candidates will have a strong background in blockchain technologies and proven experience in programming, particularly Java and Springboot. Competitive compensation and opportunities for travel are offered. #J-18808-Ljbffr