Web3 Core Engineer\n\nRemote\nAbout Brave\n\nBrave is on a mission to protect the human right to privacy online. We’ve built a free web browser that blocks creepy ads and trackers by default, a private search engine with a truly independent index, a browser-native crypto wallet, and a private ad network (opt-in!) that directly rewards you for your attention. And we’re just getting started. Already 80 million people have switched to Brave for a faster, more private web. Millions more switch every month.\n\nThe internet is a sea of ads, hackers, and echo chambers. Big Tech makes huge profits off our data, and tells us what’s true and what’s not. Brave is fighting back. Join us!\nSummary\n\nBrave is looking for an experienced Senior Software Engineer with a focus on blockchain integrations with Brave.  You'll work on our Brave Wallet.  This is a high profile and impactful, hands-on position.  Work together with our product designers, developers and privacy/security experts to help us take our wallet to the next level.\n\nYour responsibilities:\n\n\n* Work closely with the backend team to understand intricacies and help iterate on components used to build our wallet libraries.\n\n* Integrate new features in brave-core that help our front-end team connect prototypes to live data.\n\n* Be up-to-date with upcoming protocol upgrades, BIPs, EIPs, etc.\n\n* Be involved in investigating bugs around blockchain edge cases.\n\n\n\n\n \nRequirements\n\n\n* 5+ years experience with application development.\n\n* Strong C++ development skills required.\n\n* Some JavaScript / TypeScript development skills are a plus.\n\n* History of open source contributions.\n\n* Good understanding of blockchain protocols (Bitcoin, Ethereum, Solana, etc.) and the DeFi ecosystem are a plus.\n\n* Familiarity with cryptocurrency wallet stack (mechanics, UX, etc.).\n\n* Experience with software development via distributed development teams.\n\n* Comfortable working in an open source setting.\n\n* A passion for helping protect users' privacy and security.\n\n* Written and verbal communication skills in English.\n\n* Proven record of getting things done.\n\n\n\n\n \nWorking at Brave\n\n\n* Industry-leader in privacy, with a research and engineering team that’s innovating everyday to keep people safer online and beat Big Tech\n\n* Highly competitive salaries & benefits, and generous home-office stipends\n\n* Fully remote team (no office, no commute)\n\n* Welcoming, humble, ridiculously smart teammates, and a truly flat org structure\n\n* Opportunity to get in early at a hyper-growth company, and revolutionize the web\n\n* Oh, and did we mention Brendan, our CEO & co-founder, invented JavaScript?\n\n\n\n \n\n  \n\n#Salary and compensation\n No salary data published by company so we estimated salary based on similar jobs related to Web3, Crypto, JavaScript, Typescript, Ads, Senior, Engineer and Backend jobs that are similar:\n\n $60,000 — $95,000/year\n
\n\n#Benefits\n 💰 401(k)\n\n🌎 Distributed team\n\n⏰ Async\n\n🤓 Vision insurance\n\n🦷 Dental insurance\n\n🚑 Medical insurance\n\n🏖 Unlimited vacation\n\n🏖 Paid time off\n\n📆 4 day workweek\n\n💰 401k matching\n\n🏔 Company retreats\n\n🏬 Coworking budget\n\n📚 Learning budget\n\n💪 Free gym membership\n\n🧘 Mental wellness budget\n\n🖥 Home office budget\n\n🥧 Pay in crypto\n\n🥸 Pseudonymous\n\n💰 Profit sharing\n\n💰 Equity compensation\n\n⬜️ No whiteboard interview\n\n👀 No monitoring system\n\n🚫 No politics at work\n\n🎅 We hire old (and young)\n\n
\n\n#Location\nSan Francisco, California, United States

\nAragon is a small team of people that spans a broad range of backgrounds, interests, and geographies. We're entrepreneurs and Ph.D.s, technologists and skeptics, troublemakers and problem solvers, who are striving to realize the Aragon Manifesto by designing and building unstoppable tooling for the creation and management of Decentralized Autonomous Organizations (DAOs).\n\n\nAragon has overseen the production of the leading smart contract framework for DAOs, with toolkits for developers to seamlessly integrate their own apps with DAO functionality.\n\n\nAs a Senior Smart Contract Developer at Aragon, you will be joining the OS squad, where you'll play a pivotal role in building, maintaining, and shaping the future of the Aragon OSx protocol. Our platform empowers both in-house and third-party developers to craft the next wave of digital organizations.\n\n\n\n💪 What do we expect from a Senior Smart Contract Developer?\n* Transform developer needs into technical designs and production-ready code, always considering the user.\n* Understand developer motivations behind choosing our protocol, ensuring their needs are reflected across the whole developer experience.\n* Lead projects from inception to live maintenance, emphasizing secure and high-quality delivery at every phase.\n* Exhibit deep expertise in Solidity, having not just deployed smart contracts but designed intricate contract architectures addressing real-world business challenges.\n* Own and champion one or more components of our tech stack, upkeeping in-depth documentation and being the “go to” source of truth, yet help ensure knowledge stays distributed across the team.\n* Foster enthusiastic collaboration with other product and engineering squads, further deepening everyone’s knowledge of the ever-expanding technologies of web3.\n* Engage in daily stand-ups, knowing when your expertise is critical, and step up to proactively solve your teammate’s challenges.\n\n\n\n⚠️ Minimum requisites\n* 5+ years delivering software to real users, ideally in a fast-paced startup environment\n* Expert-level Solidity experience, including the design and optimization of advanced smart contract systems\n* Familiarity with or contributions to Ethereum EIPs\n* Mastery in JavaScript and, in particular, advanced Ethers.js functionality\n* Deep understanding of ENS integrations, meta-transactions, account abstraction, and Layer 2 solutions\n* Proven contributions to open-source projects within blockchain, cryptography, decentralized systems, or the broader web3 ecosystem\n* Understanding of how to work in an agile environment, using git flows, and tools like Jira and Github\n* Passionate about the possibilities of decentralized autonomous organizations and the impacts they may have on how humans work together to solve problems\n* Excellent English and technical communication - both written and oral\n\n\n\n💡 Bonus skills\n* Strong foundation in smart contract security, with a history of successful audits and knowledge of common vulnerabilities\n* Experience or certification in formal verification of smart contracts\n* Knowledge or hands on experience working with other parts of our stack, like React, GraphQL, IPFS, and Hardhat\n* Demonstrated experience using Go or Rust\n* Proven mentoring skills, fostering a culture of growth and learning within teams\n\n\n\n\n\nWe value freedom and responsibility among our contributors. In practice, this means that we're a remote distributed organization that's flexible as to where you want to work and your schedule. We will trust you to accommodate and support your team, and communicate if you ever feel stretched thin.   You will get all of the resources needed to be effective, whether its for setting up your remote work environment or a personal development budget.   This role reports to Eagle Ops, a Swiss AG dedicated to advancing the Aragon Project. We are an Equal Opportunity Employer supporting a community of DAO creators, developers, and users experimenting with new forms of social coordination and governance. \n\n#Salary and compensation\n No salary data published by company so we estimated salary based on similar jobs related to Design, Web3, Solidity, Ethereum, JavaScript, Git and Senior jobs that are similar:\n\n $60,000 — $105,000/year\n
\n\n#Benefits\n 💰 401(k)\n\n🌎 Distributed team\n\n⏰ Async\n\n🤓 Vision insurance\n\n🦷 Dental insurance\n\n🚑 Medical insurance\n\n🏖 Unlimited vacation\n\n🏖 Paid time off\n\n📆 4 day workweek\n\n💰 401k matching\n\n🏔 Company retreats\n\n🏬 Coworking budget\n\n📚 Learning budget\n\n💪 Free gym membership\n\n🧘 Mental wellness budget\n\n🖥 Home office budget\n\n🥧 Pay in crypto\n\n🥸 Pseudonymous\n\n💰 Profit sharing\n\n💰 Equity compensation\n\n⬜️ No whiteboard interview\n\n👀 No monitoring system\n\n🚫 No politics at work\n\n🎅 We hire old (and young)\n\n
\n\n#Location\nRemote - Europe

**About Rolla**\n\n[Rolla](https://rolla.finance) is a DeFi (Decentralized Finance) Options trading platform built on Polygon. With Rolla, you'll be able to trade crypto options for free, instantly, in a permissionless and easy to use web and mobile app. We are blurring the line between DeFi and regular finance, starting with permissionless option trading.\n\nOur team is a tenacious, fun and optimistic group spread out across the world working towards a decentralized financial future. You’ll be joining a highly technical team that values shipping beautiful, usable products to give people real control over their financial future. \n\nWe’re also backed by the top investors and market makers in the cryptocurrency space that believe in our vision. At Rolla, you’ll have access to industry leaders, developers, exchanges and traders to collaborate and engage with as you pioneer the next frontier of DeFi.\n\n\n**Role**\n\nYou'll be leading the charge to let anyone trade crypto options from their iOS or Android, in a completely permissionless app. You'll optimize a fast, simple and enjoyable experience across the Rolla mobile platforms.\n\n\n**Requirements**\n\n* At least 3 years of professional software engineering experience\n* At least 2 years of professional experience working with React Native in a Senior or Lead position\n* Strong algorithms and data structures background\n* Passion for DeFi, and are an active power user\n* In European or Asian timezone\n\n\n**What we offer**\n\n* Work with a small, remote, motivated and proven team building something people want. \n* Token Options. Get an early share of Rolla’s future token and be able to participate in Rolla’s upcoming DAO\n* Flexible work hours and location, with the ability to work in person with some team members in Asia\n* World Class investors. We're backed by the top VC's in crypto and you'll have access to industry experts \n\n#Location\nWorldwide

## Argent\nWe believe that the future of money and the internet should be more open and fair. That everybody should have equal access to economic opportunities, and that this brave new future is possible. It can be realised through crypto.\n\nThat's why we started Argent: the world's most simple and secure smart wallet. Empowering you to control and prosper from your digital assets and identity.\n\nWe launched in 2018 and are fortunate to be backed by Silicon Valley and Europe's top investors, including Paradigm, Index Ventures, Creandum and firstminute capital.\n\nWe're now getting ready to bring crypto's benefits to millions more people.\n\n## The role\nWe're looking for a talented senior engineer to join our backend development team. Our backend consists mostly of Java micro-services and a serverless data processing pipeline in Node.js. Our infrastructure runs on AWS (Docker/Beanstalk), deployed and maintained with Terraform.\n\n## Requirements\n* 5+ years experience as a software engineer developing cloud-native solutions\n* Strong computer science, security and networking fundamentals\n\n*You'll have expert knowledge of:*\n* Java (Spring Boot, J2EE) and Javascript (Node.js)\n* Database design (Postgres) and data processing (queues, caches)\n* API design, management and security\n* Functional programming and building serverless systems (AWS Lambda)\n* Unit and integration testing to deliver high quality code\n* Deploying, monitoring and scaling apps in a production environment\n\n*We're also looking for experience with:*\n* Ethereum blockchain\n* Big Data & Data Engineering experience (Spark/EMR/Kinesis)\n* Open source software and contributions\n\n## Benefits\n* Work remotely - anywhere in Europe (but Europe only). No commute. Lots of flexibility. \n* Plenty of time to care for your kids or cats.\n* Equity in a high growth startup backed by the investors of Spotify and Slack.\n* Autonomy - you decide how to achieve your best work.\n* Trips across Europe - for one week every three months we collaborate in person, explore new solutions and have fun. So far we’ve stayed in Nice, Toulouse, Brussels, Lisbon and Barcelona. We'll resume these when safe following COVID.\n* Equipment - pick the tech setup of your choice.\n* Parental leave - generous package for new parents.\n* Build a new industry - help define the future of the web. \n\nPlease mention the words **BUS BOUNCE JUNGLE** when applying to show you read the job post completely (#RMjE2LjczLjIxNi4xMjQ=). This is a feature to avoid spam applicants. Companies can search these words to find applicants that read this and see they're human.\n\n \n\n#Salary and compensation\n $90,000 — $120,000/year\n \n\n#Location\nEurope

\nJoin the team accelerating the financial evolution\n\n\nBitfinex is on a mission to create the most innovative and industry-leading cryptocurrency trading platform.\n\nOur team is built from many enthusiastic individuals who each hold an ownership mentality. That means that no one is waiting to be told what to do. Each member is a self-starter who is highly motivated. To put it another way, when we’re not working, we dream about work. While each member is motivated and self-starting, we are also a group who will not put our individual egos before the best interests of the team.\n\nOur team is globally distributed, so clear communication is critical. We are in constant contact as we hustle to develop, support, and deliver the best platform possible for our users. Our goal is to find more hard-working, skilled people who will be excited to join us on this journey.\n\nIf you get excited about being in an industry that is breaking new ground and have a disposition of confidence towards challenging technical feats, we want to talk to you.\n\nWho you are\n\nWe’re currently looking for a Senior Backend Developer experienced with distributed systems and matching engine concepts. The position is remote and available to anyone self-driven, and with the experience, motivation and capacity to contribute to our vision.\n\nSelf-motivation is essential for all our team members. No one on the team will micro-manage you. We are looking for team members who are comfortable using their initiative and seeing it through to completion. You will be part of a dynamic, fast paced team, and have the chance to shape the direction of Bitfinex as we grow.\n\n\n* Knowledge and experience with microservices architecture\n\n\n\n\n\n* Knowledge and experience with distributed systems and trading engines\n\n\n\n\n\n* Experience with blockchain integration\n\n\n\n\n\n* Comfortable with high-availability concepts\n\n\n\n\n\n* Have actively participated in the development of a sophisticated platform as one of the leading developers\n\n\n\n\n\n* Ability to quickly learn new technologies\n\n\n\n\n\n* Expert level C++\n\n\n\n\n\n* Exceptional JavaScript skills, ability to performance optimise code, Ruby or Rust skills are a plus\n\n\n\n\n\n* Other technologies of interest: Message queues (ZeroMQ, RabbitMQ), Job Queues\n\n\n\n\nKey responsibilities\n\n\n* Developing and improving matching engine performance\n\n* New feature implementation \n\n* Work towards improving test automation framework and maintaining scalable data sets\n\n* Develop and contribute to long-term technical solutions and strategies of the engineering department\n\n* Assisting with delivering high-quality code to a huge client base\n\n* Identifying and recording bugs, verifying fixes\n\n* Leverage monitoring and reporting tools to provide quality metrics\n\n* Assisting development team by reproducing issues\n\n\n\n\n\n---------------------------------------------------------------------------------------------------------------------------\n\nTo learn more about us, please visit Bitfinex and check out our documentation.\n\nPlease see the relevant descriptions, and email [email protected] with your github profile, CV, and cover letter if you see a match. \n\n#Salary and compensation\n No salary data published by company so we estimated salary based on similar jobs related to Crypto, Senior, Backend, Web3, Blockchain, Developer, Digital Nomad, JavaScript and Ruby jobs that are similar:\n\n $65,000 — $130,000/year\n
\n\n#Benefits\n 💰 401(k)\n\n🌎 Distributed team\n\n⏰ Async\n\n🤓 Vision insurance\n\n🦷 Dental insurance\n\n🚑 Medical insurance\n\n🏖 Unlimited vacation\n\n🏖 Paid time off\n\n📆 4 day workweek\n\n💰 401k matching\n\n🏔 Company retreats\n\n🏬 Coworking budget\n\n📚 Learning budget\n\n💪 Free gym membership\n\n🧘 Mental wellness budget\n\n🖥 Home office budget\n\n🥧 Pay in crypto\n\n🥸 Pseudonymous\n\n💰 Profit sharing\n\n💰 Equity compensation\n\n⬜️ No whiteboard interview\n\n👀 No monitoring system\n\n🚫 No politics at work\n\n🎅 We hire old (and young)\n\n

This is a unique opportunity to join super early a team that is conceiving, designing and developing an entirely new marketplace on the blockchain, which can unlock a new asset class that can have a tremendously positive impact in the world. For this position, we’re looking to hire a Senior Blockchain Engineer with a strong focus on designing and developing decentralized applications on Ethereum. We’re expecting to hire an outstanding developer that has the potential to grow as a team leader. You will be working together with the rest of the Engineering team, building the different parts of our smart contracts architecture, while clearly documenting your work. We’re a small, distributed team with a focus on rapid development and constant iteration based on users’ feedback.\n\n# Responsibilities\n * Designing and developing hands-on our smart contracts infrastructure and applications. \n* Documenting thoroughly your work for an effective team coordination. \n* Communicating effectively with the entire team. \n\n# Requirements\n* Demonstrable experience as an ever-evolving software engineer. \n* Deep understanding of algorithms and data structures. \n* Deep understanding of smart contracts architecture and design. \n* Strong knowledge and experience developing decentralized applications. \n* Experience developing smart contracts on Solidity. \n* Experience writing web3, React and Javascript dApp code. \n* Experience developing and documenting API. Experience writing unit and integration tests.\n\n**Desirable:**\n* Game theory knowledge. \n* Trading experience. \n* Familiar with technologies such as 0x, Dharma, dydx, ZeppelinOS, Aragon. \n\nPlease mention the words **MESSAGE MIDNIGHT PATH** when applying to show you read the job post completely (#RMjE2LjczLjIxNi4xMjQ=). This is a feature to avoid spam applicants. Companies can search these words to find applicants that read this and see they're human.\n\n \n\n#Salary and compensation\n No salary data published by company so we estimated salary based on similar jobs related to JavaScript, React, Crypto, API, Design, Web3, Blockchain, Solidity, Smart Contracts, Developer, Digital Nomad, Senior and Engineer jobs that are similar:\n\n $60,000 — $130,000/year\n
\n\n#Benefits\n 🌎 Distributed team\n\n

Mothership is looking for you if you identify as a senior backend engineer with at least 6 years of experience behind you. You will have a challenge to design and implement a cryptocurrency exchange and it's sub-systems to handle dozens of thousands operations a second, make it scalable and reliable. As a senior engineer you will design micro-services and APIs, apply the best development practices with the high requirements for security, performance and reliability.\n\nYou should be able to use a modern technology stack and follow best design, coding and devops practices. You have strong skills, but are technology agnostic and can work with any tool to solve a problem. You think before you do and can articulate your decisions to teammates, provide specification and delivery roadmap. If you believe this sounds like you, then we'd love to welcome you to the Mothership Engineering team. \n\nPlease mention the words **CASE FIRST ABILITY** when applying to show you read the job post completely (#RMjE2LjczLjIxNi4xMjQ=). This is a feature to avoid spam applicants. Companies can search these words to find applicants that read this and see they're human.\n\n \n\n#Salary and compensation\n No salary data published by company so we estimated salary based on similar jobs related to JavaScript, Crypto, Node, Senior, Golang, Backend, Web3, Blockchain, Bitcoin, Developer, Digital Nomad, DevOps and Engineer jobs that are similar:\n\n $60,000 — $120,000/year\n