Assist in developing secure software by writing and optimising Rust code for security-critical components.
Conduct deep manual and automated code audits to identify and mitigate security vulnerabilities.
Design and implement machine learning models for automated security analysis and threat mitigation.
Parity builds core blockchain infrastructure for a decentralized web, including Polkadot and Kusama. Our remote-first global team develops open-source software and is committed to a respectful, innovative culture.
Own threat modeling and secure code reviews for new products and features.
Maintain and tune AppSec tooling, and run the bug bounty program.
Design and evolve the secure SDLC, and partner with engineering teams to implement secure-by-default patterns.
Ondo Finance is building institutional-grade financial infrastructure for tokenized real-world assets. The company operates at the intersection of traditional finance and on-chain systems, with a focus on security and innovation.
Act as the primary security partner for the Walrus team, providing architectural guidance and embedding security practices throughout the development lifecycle.
Lead security assessments for new features and contribute to ecosystem-wide security initiatives, identifying systemic risks and actionable remediation plans.
Drive a security-by-design culture, leveraging AI and automation to focus on high-impact, complex security research and mentor engineers.
Mysten Labs builds foundational infrastructure to accelerate the adoption of decentralized protocols based on blockchain technologies. They are a well-funded, remote-first team with over $300M in Series B funding from top venture firms, fostering a culture of innovation and growth.
Design and implement new features within the Data Product space, including trust-minimized off-chain computation and aggregation of external data in blockchain environments.
Own end-to-end delivery of data products that power the largest market share of DeFi by total value secured.
Build core products with Smart Contracts using Solidity, Move, and Rust.
Chainlink is the industry-standard oracle platform bringing capital markets onchain and powering the majority of decentralized finance. The company has enabled tens of trillions in transaction value and fosters a collaborative, autonomous engineering culture.
Threat model new product features and integrations, hardening systems with effective controls.
Operate and evolve the application security toolchain, keeping it high-signal for developers.
Own day-to-day security operations across the detection stack, triaging and resolving incidents.
Gauntlet builds the financial systems of the future, operating across the entire onchain finance stack to offer vault products for institutional clients. They serve over $1.5B in client TVL and combine traditional finance with crypto-native expertise.
Lead threat modeling and secure design reviews across C++, Go, and Rust
Build and tune application security testing (SAST, SCA, secret scanning, DAST) and fuzzing harnesses
Operate PSIRT and build security champions program to raise the security bar
Redpanda is a unified platform for agent-data interaction, combining streaming, SQL analytics, and intelligent connectivity with governance for enterprise AI agents. It is a fast-moving, people-first organization with a small, high-trust security team and team members across the globe.
Protect applications trusted by millions of users in the Web3 ecosystem.
Combine hands-on security engineering with threat modeling, code reviews, and developer enablement.
Embed security throughout the software development lifecycle to build resilient products.
This company builds products and infrastructure for the Web3 ecosystem, focusing on digital assets, identities, and blockchain technology. It is a globally distributed, remote-first team with a culture of security, autonomy, and innovation.
Build secure-by-default infrastructure and automation to eliminate entire vulnerability classes across money-moving systems.
Own application security, threat modeling, and vulnerability disclosure from design review to production.
Partner with engineering to set security standards, make risk-based decisions, and ship fast without compromising safety.
Flex is building the AI-native private bank for business owners, re-architecting the entire financial system for entrepreneurs. Since launching in 2023, Flex has scaled to nine-figure annualized revenue, raised $100M+ in equity and $300M+ in debt, and operates with a high-bar, low-ego culture focused on speed and execution.
Design and improve high-volume transaction broadcasting pipelines and wallet infrastructure for scalability.
Manage transaction lifecycle, including detection, retry, rebroadcast, and recovery of stuck transactions.
Build reliable cross-chain and DeFi integrations handling non-atomic multi-step journeys and swap execution.
MoonPay builds the operating system for value movement, enabling crypto, stablecoins, and tokenized assets. With 30M+ customers and 500+ ecosystem partners, the company maintains a high-standards, high-velocity culture and is regulated across multiple regions.
Build and operate Go backend services for key management and signing at scale.
Design and implement cryptographic recovery and trust models for non-custodial wallets.
Work with external auditors, Kubernetes, and distributed systems in a security-critical environment.
Offchain Labs builds the Arbitrum stack, the leading Ethereum scaling solution. They are a well-funded company with $124 million in backing, a small but high-ownership team, and a culture of security-first engineering and collaborative review.
Lead strategic client engagements, guide onboarding and adoption, and build long-term partnerships to drive success on Arbitrum.
Collaborate with product, engineering, and research teams to relay feedback and improve the platform from protocol to application layers.
Own developer success across leading application teams, solving challenges and accelerating their development.
Offchain is pioneering blockchain scalability and security, transforming how the world interacts with decentralized applications. The team consists of thinkers and doers backed by $124 million in funding, working on the Arbitrum stack that powers the most widely adopted Ethereum scaling solution.