Arbitrum is a layer 2 scaling solution for Ethereum designed to increase transaction throughput and reduce gas fees while maintaining the security guarantees of Ethereum’s mainnet. It uses an Optimistic Rollup architecture, which batches multiple transactions off-chain and submits a compressed proof back to the Ethereum mainnet. This approach allows developers to build scalable decentralized applications (dApps) that can handle high volumes of user activity without compromising decentralization or security.

Avara builds innovative products leveraging blockchain technologies. Avara’s suite includes the Aave app, unleashing the Aave Protocol and its native stablecoin GHO, Lens, an open social network, and Family, a design-first mobile crypto wallet. Avara’s vision is to build a people-powered internet that benefits all.

Axiom is using zero knowledge proofs to scale smart contract applications in a new way. We are a small but incredibly strong team backed by the best investors in crypto. We’re looking for exceptional people who are excited to work on challenging and impactful problems in a fast-paced environment. Our office is in NYC and working in person in NY is our strong preference, but we're open to remote candidates as well.

At Aztec, our goal is to add privacy to Ethereum.

Base is a secure, low-cost, and developer-friendly Ethereum Layer 2 built by Coinbase. It leverages Optimism’s OP Stack to provide fast and affordable transactions while maintaining compatibility with Ethereum’s tooling and infrastructure. As a rollup, Base processes transactions off-chain and posts data to Ethereum mainnet, reducing fees significantly and allowing developers to build scalable decentralized applications without compromising on security or decentralization.

Cantina is a web3 security marketplace created to connect blockchain projects with top-tier independent security researchers. It was launched to make blockchain security services like smart contract audits, bug bounties, and penetration testing more accessible and transparent. By offering a platform where teams can find and collaborate with vetted experts, Cantina helps improve the security posture of decentralized applications and protocols.

CoW DAO is on a mission to protect Ethereum users from MEV and optimize trade execution across DeFi. We achieve this through the CoW Protocol, CoW Swap (a leading intent-based DEX aggregator), and the innovative MEV Blocker, which together help secure, aggregate, and route trades for optimal outcomes. We also fund values-aligned projects via the CoW Grants Program.

Codex is a decentralised data storage platform that provides exceptionally strong censorship resistance and durability guarantees. It serves as the storage layer of the Logos tech stack. Alongside the trustless agreement layer, Nomos, and the communications layer, Waku, it is one of the Logos Collective's foundational projects.

Dappnode is building the OS for the decentralized internet. Our mission is to make it easy for anyone, anywhere to run decentralized infrastructure — from Ethereum validators to AI inference nodes. We’re a small, globally distributed team with deep conviction in open source, self-sovereignty, and bottom-up systems change.

ETHGlobal is growing the most valuable developer community in web3. We're a small team and we’re looking for passionate engineers to join us. We’re building products and protocols for developers to help them learn smart contract development, creating new infrastructure, and managing payments at scale. We work closely with organizations like the Ethereum Foundation, Optimism, Base, IPFS, Uniswap, Polygon, Hack the North and more.

Edge City is a self-described “society incubator” focused on advancing human flourishing through immersive, experimental communities. Rather than traditional conferences or networks, Edge City brings together builders, scientists, creatives, and innovators to inhabit popup villages, temporary communities where residents live, work, and create together for one to two months. These villages emphasize creativity, health, and collaboration in environments designed to foster breakthroughs through shared space and momentum.

Eigen Labs is more than just a leading name in the blockchain space. We’re the driving force behind EigenLayer, a game-changing solution that revolutionizes crypto-economic security. Imagine a world where blockchain projects break free from the shackles of the scaling trilemma and capital limitations.

The EEA is the premier non-profit organization bridging Ethereum, Layer 2 solutions, and Enterprises. We promote the entire Ethereum ecosystem through education, standardization, and collaboration. Meet our members and board of directors. We believe Ethereum is more than technology, it’s a community built on openness and inclusion, designed to be accessible to everyone worldwide.

Ethena is a decentralized finance protocol that issues USDe, a synthetic stablecoin pegged 1:1 to the U.S. dollar. Unlike traditional stablecoins backed by fiat reserves, USDe uses a delta-neutral strategy to maintain its peg. The protocol holds long positions in cryptocurrencies like ETH or liquid staking tokens, while simultaneously taking short positions in perpetual futures markets. This approach allows it to earn yield from the funding rate spread while remaining market neutral. Over time, Ethena has expanded its backing to include assets like BTC and stablecoins, enhancing liquidity and risk resilience.

ether.fi is a noncustodial, decentralized liquid staking protocol built on the Ethereum network. Users can deposit ETH or other liquid staking tokens and receive in return the protocol’s native token, eETH. This token is a rebasing ERC-20 that represents staked ETH shares and automatically accumulates rewards from both Ethereum staking and EigenLayer restaking. Since its launch in 2023, ether.fi has seen rapid growth, managing billions of dollars in assets.

Blockchains are finally ready to deliver on their promise of upgrading the financial system to be more open, fair, transparent, fast, reliable, and efficient. Etherealize is making this vision a reality by bringing together the brightest minds from Ethereum and Wall Street to build institutional-grade products that move global finance on-chain.

Flashbots started in 2020 as a research and development organization formed to mitigate the negative externalities and existential risks posed by MEV. Since then, we have impacted the world of crypto through mev-geth, Flashbots Protect, MEV-Boost, MEV-Share, our open research and soon-to-be SUAVE.

GainForest is a decentralized science non-profit building a global conservation system that's transparent, fair, and scalable. We work with 35+ Indigenous and local communities across South & Southeast Asia, East Africa, and Latin America. 🌎

Genesys is a platform focused on community, developer education and mentorship agreements thru Smart Contracts. Sound interesting? Create your profile and apply to become a mentor today!

Geode is a spin-out of the Ethereum Foundation. We are a digital product studio focused on Ethereum ecosystem development. The story of Ethereum is a story of geography. From grassroots communities and meetups to universities, from local developers to startups, from policy to user adoption and more, the vitality of Ethereum stems from the geographic decentralization of its ecosystem. At Geode, we embody this spirit. Our North Star is the geographic decentralization of Ethereum.

Geth (Go Ethereum) is the official Go implementation of the Ethereum protocol, maintained by the Ethereum Foundation. As one of the most widely used Ethereum clients, Geth allows users to run a full Ethereum node, enabling them to mine Ether, deploy and interact with smart contracts, and participate directly in the peer-to-peer Ethereum network. It plays a critical role in supporting the decentralization, security, and integrity of the Ethereum blockchain.

Giveth is building a culture and economy that rewards and empowers those who give. Our goal is to use web3 to radically transform how public goods are funded by helping nonprofits evolve out of systems that depend on sacrifice into ones that create win-win situations for everyone involved. Beginning with a free and direct crypto donation platform on Ethereum, we onboard for-good projects and support them so that they can eventually blossom into DAOs with their own regenerative economies, with Giveth itself becoming an impact investment hub for public goods. Currently with its fundraising platform, Giveth rewards donors directly through the GIVbacks program with GIV, which they can then stake to support projects and earn returns via GIVpower.

Since launching in 2015, Gnosis has evolved from a prediction market platform into a comprehensive Web3 infrastructure provider. Our journey includes developing Safe, an industry-standard multisig wallet securing over $100 billion in assets, and CoW Protocol, offering MEV-protected decentralized trading. Gnosis also created Zodiac, a modular DAO toolset enabling customizable governance systems. In 2021 Gnosis launched the Gnosis Chain through a merger with xDai. This low-cost, reliable L1 supports decentralized applications with high security and uptime. Today, Gnosis focuses on scaling blockchain technology beyond infrastructure, delivering consumer-facing applications that rival traditional systems in user experience. The ecosystem aims to revolutionize key areas like payments, decentralized AI, and the open web. United by the GNO token, Gnosis's aligned projects work towards a decentralized future where users have greater control and privacy. Gnosis Chain serves as the secure, EVM-compatible foundation supporting this growing ecosystem of innovative products.

Immunefi exists to protect the future of money. Immunefi is Web3's last line of defense and leading bug bounty platform, preventing catastrophic hacks before user funds are stolen. Our team is highly specialized, so we’re looking for talented people who are willing to jump right in and use their expertise to help us protect Web3. If you’re looking to join a fast-paced, problem solving environment at the very core of decentralized finance, then read on.

Immutable is a global technology company, powering the leading platform for building games on Ethereum. We are on a mission to build the future of gaming by redefining how games are played and discovered. Founded in 2018, Immutable is one of the fastest Australian companies to hit unicorn status, having raised more than AUD $300M+ and a valuation of AUD $3.5 billion.

Kleros is a decentralized dispute resolution protocol leveraging blockchain technology to revolutionize dispute resolution across global industries. The platform serves as a decentralized third party capable of rendering decisions across various domains such as small claims, insurance, e-commerce, finance, freelancing, token listings, content moderation, intellectual property, and more. As Kleros continues to expand its innovative solutions, we seek a Web3 Marketing Manager to spearhead our marketing initiatives, enhancing our brand's presence and driving community engagement in the blockchain ecosystem and beyond.

Kotani Pay is a regulated fintech startup focused on cross border payments and remittances. We are backed by multiple venture capitals including Unicef Venture Fund. We enabled mobile money wallets such as MomoPay, to integrate with SMS mobile phones, to receive funds/salary/payments and withdraw cash in regions that do not have internet connectivity.

Lido is a liquid staking protocol backed by industry-leading staking providers that supports staking for Ethereum. Lido lets users stake their tokens - without locking tokens or maintaining infrastructure - whilst participating in on-chain activities, e.g. lending, farming and more.

Lisk is a Layer2 part of the OP Superchain, we are founder-focused and our main audience and growth is on emerging markets (Africa and SEA - Latam soon).

Morpho is a leading Decentralized Finance (DeFi) lending protocol that recently secured $50 million in funding from Ribbit Capital, a16z crypto, Coinbase Ventures, Variant, Brevan Howard, Pantera, Blocktower, and 50 others to support its mission of revolutionizing lending with an open, efficient, and resilient platform. Morpho is experiencing explosive growth, with over $8 billion in assets supplied on the protocol, solidifying itself as the new standard for DeFi lending. Now, Morpho is scaling its team of contributors to establish itself as a cornerstone, not just of DeFi, but of a new internet-native financial system.

We are a team of builders and researchers on a mission to empower enterprises and developers worldwide to access and build on decentralized systems.

Nimbus is a research team that focuses on developing an Ethereum client and library. We believe that the largest deployment of Ethereum will potentially be on embedded systems and Nimbus is designed to perform well on embedded, mobile and generally resource-restricted devices.

What we do The Nomic Foundation is helping create a more decentralized world that empowers individuals with greater autonomy and choice. As a software development platform, Ethereum can become a foundational component of this future, which is why we are solely focused on supporting its growth.

The Obol Collective is quickly becoming the foundation of layer 1 blockchains like Ethereum through Obol Distributed Validators (DVs) — our industry leading validator technology that improves performance, lowers risks and increases rewards. We’re already securing $1B+ of ETH through key partners like Lido & EtherFi and we’re expecting continued rapid growth. We’re backed by top tier angels like David Hoffman, Anthony Sassano, Sreeram Kannan, Dankrad Feist and tier 1 investors like Pantera, Archetype, Ethereal Ventures, Placeholder and more.

Odisea is an innovation lab accelerating the adoption of crypto and AI. We do this by backing early-stage founders, designing programs that turn ideas into products, and collaborating with leading protocols to scale globally.

Our team is committed to bridging the gap between the current state of blockchain and its potential. Our flagship product, Arbitrum One, is a dominant force in Ethereum scaling and is trusted by enterprises, developers, and users worldwide. But that’s just the beginning. Our passionate team is constantly building on this success, rolling out innovative tools such as Arbitrum AnyTrust, Arbitrum Orbit, Stylus, BoLD, and Arbitrum Nitro. Offchain Labs also contributes to the Ethereum core protocol with the Prysm consensus client.

OpenSea is a decentralized marketplace for non-fungible tokens (NFTs), founded in late 2017 by Devin Finzer and Alex Atallah. Built initially on Ethereum, it enables users to mint, buy, sell, and trade unique digital assets such as art, domain names, music, collectibles, virtual real estate, and utility tokens, all directly via smart contracts. OpenSea is non-custodial, meaning users retain full control of their assets through crypto wallets like MetaMask or Coinbase Wallet.

Founded in 2015 with the mission to protect the open economy, OpenZeppelin is the world leader in securing blockchain applications and smart contracts. Our Open-Source Contract Libraries are a public good that have facilitated the transfer of over $23 trillion and are considered the industry standard for smart contract development. Our professional expertise integrates seamlessly into clients’ development lifecycles, enabling teams to plan, code, audit, deploy, and operate projects more quickly and securely.

Optimism is a Collective of companies, communities and citizens working together to build a more equitable internet. Our vision for this citizen-governed network: a composable, unified constellation of blockchains that can support internet-level activity; powered by the MIT-licensed open source OP Stack.

The Ethereum Foundation (EF) is a global non-profit dedicated to supporting Ethereum’s long-term success. Our mission is to allocate resources to critical projects, advocate for Ethereum within the ecosystem, and promote its vision to the world.

Polygon is a modular, Ethereum compatible Layer 2 scaling ecosystem designed to address Ethereum’s inherent challenges such as high gas fees and slow settlement by operating independent sidechains and rollup networks that periodically anchor their state to Ethereum mainnet. Originally founded in 2017 as Matic Network, the project rebranded to Polygon in early 2021 to reflect its broader vision of an interconnected, multi-chain environment powered by tools like Polygon SDK, zkRollups, and the Polygon PoS chain.

The Ethereum Foundation (EF) is a global non-profit organization dedicated to supporting Ethereum and related technologies. Our mission is to do what is best for Ethereum’s long-term success. Our role is to allocate resources to critical projects, to be a valued voice within the Ethereum ecosystem, and to advocate for Ethereum to the outside world.

QuickNode is a cloud-based infrastructure company that powers the blockchain ecosystem. Our mission is to be the indispensable utility that empowers companies and innovators globally to build next-generation, Web3 enabled businesses & applications using blockchain technology. QuickNode is backed by some of the world's best investors including Tiger Global, Y Combinator, SoftBank, and the Seven Seven Six Fund. The QuickNode team has over 120 people maintaining high performance global data infrastructure for amazing customers serving billions of requests daily. We are a global remote company with an HQ in Miami, Florida.

The Ethereum Foundation (EF) is a global non-profit organization dedicated to supporting Ethereum to ensure its long-term success. As part of this mission, EF Research (EFR) is a collection of research teams, including the Robust Incentives Group (RIG). At RIG, we work on the protocol architecture and mechanisms through the lens of game theory, mechanism design, using formal methods, and empirical analysis. While our research has an economic focus, our work is inherently interdisciplinary, drawing insights from economics, computer science, cryptography, and distributed systems. We work and collaborate across these fields to find ways to improve Ethereum. This includes both longer-term foundational research and more immediate proposals for Ethereum mainnet upgrades—with a bias towards the latter.

RISC Zero is a pioneering technology company developing general-purpose zero-knowledge virtual machines (zkVMs) that allow developers to prove the correct execution of code without revealing sensitive data. By using the RISC-V instruction set and leveraging STARK-based cryptographic proofs, RISC Zero empowers developers to write verifiable programs in familiar languages like Rust and C++, rather than having to design custom circuits. This makes advanced privacy-preserving and trustless computing accessible to a much wider audience.

Remix is the premier onramp for developing smart contracts. The Remix Project is a rich toolset that can be used for the entire journey of contract development by users of any knowledge level, and as a learning lab for teaching and experimenting with Ethereum.

Scroll is a Layer 2 scaling solution for Ethereum, specifically focusing on zkRollups. Key aspects of Scroll are zkRollup technology, Scalability, Efficiency, Security, and Developer-friendly. Overall, Scroll plays a crucial role in addressing Ethereum's scalability challenges and facilitating the growth of decentralized finance (DeFi) and other blockchain-based applications by providing a scalable and efficient Layer 2 solution.

Self is a privacy-first identity verification platform designed for Web3 and universal apps: 1). Securely onboard Web3 users with private, trustless identity verification, 2). Enable Sybil-resistant polling for fair and transparent governance, 3). Check sanction lists to ensure compliance without exposing user data, 4) Facilitate wallet recovery with secure identity proofs.

The Sky Protocol, formerly known as Maker, powers the Sky Ecosystem, supporting the use of USDS and SKY tokens for financial transactions. It is non-custodial, ensuring users retain control over their assets. The protocol offers trading, saving, and rewards accumulation services. The protocol’s infrastructure includes permissionless pools, a stablecoin system, and governance, creating an open, transparent financial system.

The Starknet Foundation stewards the growth of Starknet, a cutting-edge Layer 2 blockchain built on Ethereum. Our mission is to scale Ethereum without compromising its security or decentralisation, making powerful, efficient decentralised applications accessible to all.

ZK proofs are one of the most critical technologies to blockchain scaling, interoperability and privacy, but are too complex for most developers today. Succinct’s mission is to make zero knowledge proofs accessible to any developer.

We are a non-profit aimed at protecting the future of crypto.

Uniswap Labs builds products that help millions of people access DeFi simply and securely ‒ from the Uniswap Web App and Wallet to crypto infrastructure like the Uniswap Trading API, and Unichain. Uniswap Labs also contributes to the development of the Uniswap Protocol, which has processed over $2.9 trillion in volume across thousands of tokens on Ethereum and 12+ other chains.

World is a network of real humans, built on privacy-preserving proof-of-human technology, and powered by a globally inclusive financial network that enables the free flow of digital assets for all. It is built to connect, empower, and be owned by everyone.