Douro Labs builds market data infrastructure used across decentralized finance. The engineering team develops backend systems, smart contracts, SDKs, monitoring tools, and open-source components that support Pyth-related products. In this Software Engineer role, you’ll work on both on-chain and off-chain projects, contribute to developer-facing tooling, and participate in shaping product...

Spearbit, along with its Cantina platform, builds tools that address security needs across the Web3 ecosystem. The team provides infrastructure that supports collaborative security reviews, security competitions, bug bounties, incident response workflows, and AI-driven code analysis. The Full Stack Engineer will contribute to the design and development of core user-facing...

Offchain Labs is seeking a Site Reliability Engineer to support and scale infrastructure powering the Arbitrum ecosystem. The role focuses on maintaining Kubernetes-based deployments, automating infrastructure using declarative tooling such as Terraform, and working within GitOps workflows using tools like ArgoCD. The candidate will diagnose complex reliability issues across distributed...

Offchain Labs, the team behind the Arbitrum scaling ecosystem, is hiring a Security Engineer focused on securing cloud and blockchain infrastructure. The role involves working across AWS-based environments, Kubernetes, multi-region access systems, VPN-based security, and secrets management tools such as Vault or KMS. This position will support architecture analysis, threat...

Ava Labs is hiring a Staff Backend Engineer for their Institutional Custody division, focused on designing and scaling secure blockchain and wallet infrastructure. This role sits at the intersection of technical leadership and hands-on engineering, leading long-term architectural direction and backend development using Golang. The position works closely with cross-functional...

This internship is intended for MSc/PhD students interested in contributing to research and engineering in large-scale AI model development at Tether. The role involves participation in building and improving SOTA models in domains such as LLMs, video models, and multimodal architectures. Interns will also work on enhancing distributed training infrastructure...

This role focuses on implementing and optimizing cryptographic systems related to zero-knowledge proof generation. Axiom develops verifiable and privacy-preserving software components, including the OpenVM zkVM framework, which supports flexible verification of program execution. The ZK Proof Engineer will contribute to building and refining ZK-enable infrastructure, integrating low-level computing, compiler frameworks,...

This open application internship is offered by Nethermind for individuals interested in contributing to blockchain, Ethereum infrastructure, Web3 technologies, cryptography, research, and related fields. Applicants may come from various technical or analytical backgrounds and will have the opportunity to collaborate with distributed teams on research, engineering, infrastructure, or product-focused work.The...

This role focuses on frontend engineering for Phantom’s multi-chain self-custodial crypto wallet. The engineer will be responsible for building and enhancing user-facing features across the Phantom browser extension and website, contributing to UI performance, responsiveness, and quality. The position includes driving product enhancements that expand blockchain support, improving cross-chain usability,...

This role contributes to the engineering of Phantom’s multi-chain self-custodial wallet, enabling users to interact with crypto assets across Solana, Ethereum, Polygon, and Bitcoin. The position is full-stack, encompassing both user-facing interfaces and backend development, including APIs and service infrastructure that connects blockchain data to frontend experiences. The engineer will...

ENS Labs, the development team behind the Ethereum Name Service protocol, is seeking a Web3-focused Integrations Engineer to advance ENS adoption across wallets, SDKs, dApps, L2 networks, developer libraries, and other crypto infrastructure. This role combines hands-on engineering work with external collaboration, contributing code directly to open-source projects that integrate...

SatoshiLabs, the company behind Trezor and the first hardware wallet in the industry, such as Recovery Seeds and Shamir Backup, is seeking a Backend Developer to support and expand its blockchain infrastructure. The role involves developing services that interface with multiple crypto networks, integrating external data services, managing backend performance,...

ENS Labs, the core development team behind the Ethereum Name Service protocol, is hiring a Senior/Staff-level DevOps Engineer to manage and maintain the infrastructure that supports ENS resolution across multiple chains. This role oversees operational reliability for core services such as metadata systems, indexing services, CCIP-Read gateways, and emerging Namechain/L2...

This role supports Consensys’s Data team, responsible for transforming raw data into reliable, analysis-ready models that power KPIs across Finance, Product, and Leadership. As a Senior Analytics Engineer, you will design, build, document, and maintain data models and semantic layers, while ensuring accuracy, governance, and consistency across the organization. You...

This role supports MetaMask’s API Platform team, which builds backend services powering key product experiences across MetaMask clients. As a Backend Engineer, you will develop Node.js services that support APIs such as Price, Token, Account, and NFT, contributing to reliable and scalable infrastructure used by millions of users. The position...