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Paxful is the world’s largest people-powered marketplace, connecting over 14 million users across 140+ countries to move, save, and store money - even without a bank account. Founded in 2015 and based in the United States, Paxful offers safe, fast, and reliable access to the global economy through cryptocurrencies bought and sold on a borderless peer-to-peer payment network. With over 500 payment methods for accessing Bitcoin, USDT, and other popular digital and local currencies, Paxful is building a financial system allowing all users to participate in the digital economy.
The Senior Blockchain Developer is responsible for designing, building, and maintaining robust blockchain-based systems that power Paxful’s platform. This role requires deep expertise in blockchain technologies, hands-on experience with API integrations (e.g., BitGo, Fireblocks), and the ability to work with advanced blockchain solutions such as Solana Smart Contracts. You will play a critical role in building secure wallet systems, optimizing transaction processing, and integrating new blockchain features to support Paxful’s expanding ecosystem.
What will you do:
Who you are:
What we are looking for:
Recommended Skills:
We encourage a remote-first approach for geographically distributed teams, being open to skilled professionals from around the world. Beyond that, we are committed to transparency, openness, and supporting each other to build great things together.
You can expect:
We are a fully remotely distributed team. However, we are currently unable to provide visa sponsorship for employment.
Due to legal restrictions, we are unable to hire individuals residing in countries currently under international sanctions.
Upon submitting your application, you consent to receive future communications. The communication will depend on the alignment of your qualifications with this position. Only eligible candidates will receive correspondence.
Interested in Paxful but don't think this role is the best fit for you? View our other positions: https://paxful-crypto.workable.com
Base compensation is dependent on the candidate's residence.
—
To recruitment agencies and outsourcing entities: Paxful maintains a strict policy of not accepting third-party applications from recruitment agencies or individual recruiters. Furthermore, any collaboration with outsourcing partners remains outside of our strategic planning.
Apply Now:
Solana, founded by Anatoly Yakovenko in 2017, is a high-speed, decentralized blockchain platform using the innovative “Proof of History” mechanism. Solana offers fast, secure, scalable apps and marketplaces. With over 1,400 validators and significant involvement in projects like Wormhole Bridge, Pyth, Neon EVM, and Lido on Solana, P2P has supported Solana from its genesis, managing over $50M. The platform sees heavy DeFi usage, with over 30,000 daily active addresses and millions of transactions. Solana’s ecosystem includes developments like Solana Pay for instant, low-fee transactions and the Solana Mobile flagship phone, Saga.
At P2P.org we have a team of experts with their own unique approach and ownership culture. Together we gain experience and make dreams come true! 🌟
P2P.org is an equal opportunity employer. All applicants will be considered for employment without regard to race, color, national origin, religion, sex, sexual orientation, gender identity, veteran status, or disability.
General Requirements:
We are seeking a Site Reliability Engineer to join our team to help streamline operations and maintain critical infrastructure. You’ll write custom code to automate operational tasks and support a fleet of nodes for multiple blockchain networks. You’ll also provide guidance and expertise to development teams to ensure their applications follow modern best practices. Your work will directly impact the health and stability of our L1.
ZetaChain is the first Universal Blockchain with native access to Bitcoin, Ethereum, Solana, and more, offering seamless UX and unified liquidity to the next billions of users. With its Universal EVM, ZetaChain empowers developers to build Universal Apps that operate natively across any blockchain, creating a fluid crypto ecosystem from a single platform.
Find out more about our ecosystem.
Find out more about our hiring culture: Dream Team Culture
Our ideal candidate description is a wish list, not a checklist. We don’t expect every applicant to tick every box. If you have a strong alignment with many of the qualifications and a passion for learning, we’d love to hear from you.
A candidate who is a coder at heart with a diverse set of experiences. They should enjoy streamlining operations and building new services that include comprehensive monitoring.
We are a team of builders and researchers on a mission to empower enterprises and developers worldwide to access and build on decentralized systems.
Our expertise covers several domains: Ethereum and Starknet protocol engineering, layer-2, AI, cryptography research, protocol research, decentralized finance (DeFi), security auditing, formal verification, real-time monitoring, smart contract development, and dapps and enterprise engineering.
Working to solve some of the most challenging problems in the blockchain space, we frequently collaborate with renowned companies, such as Ethereum Foundation, Starknet Foundation, Gnosis Chain, Flashbots, Forta Protocol, Lido, EigenLayer, Open Zeppelin, RISCZero, Aleph Zero, and many more.
Today, we are a 350+ strong team working remotely across 66+ countries.
Join a team of brilliant minds and hardcore engineers dedicated to solving some of the most challenging problems in software engineering today. We offer a unique opportunity to work on algorithmically intensive, design-heavy projects that are novel and groundbreaking. If you’re an excellent problem solver motivated by tackling complex challenges, and you thrive on innovation and collaboration, we’d love to have you on board.
If you’re driven by complex challenges and excited by the prospect of working with cutting-edge technologies, this role is for you. We’re looking for individuals who are not just engineers but innovators—those who are eager to collaborate with the best minds in the industry and make a significant impact on the future of technology.
Algorithm and System Design:
Software Development:
Collaboration and Leadership:
Research and Innovation:
Technical Expertise:
Personal Attributes:
Experience:
Collaborate with Leading Organizations:
Innovate in a Non-Boring Environment:
Keep up to date on what we are working on by following us on our social channels:
Logos is a movement supporting the development of the decentralised web. Logos technologies lay the foundations for a freer internet upon which communities can evolve into network states. Each protocol in the Logos stack seeks to empower its users while upholding civil liberties and fundamental freedoms.
Nomos is a sovereign, modular, zk-encrypted network of blockchains. The trustless agreements layer of the Logos stack. The forthcoming Nomos network will provide a common infrastructure layer upon which communities and aspiring network states can build social, governance, and financial services that uphold their community members’ fundamental rights and values.
This position is a hybrid engineering and applied research role. Primarily, as an engineer, you will contribute by implementing the specifications developed during research. As a researcher, you will contribute to the design of new protocol solutions. You will design, specify, verify and build distributed systems by leveraging formal and experimental techniques; build proof of concepts and prepare executable specifications for the development team.
It’s expected you understand papers in depth and are able to take all necessary steps for their evaluation, adaptation and implementation. The project will expose you to the newest ideas and allow you to stay up-to-date with what is emerging in the space (blockchain, p2p networks, distributed systems, cryptography, Zero-Knowledge proofs, MPC, etc.). You will conduct theoretical and practical analysis of the performance of distributed systems and present research results.
We are happy to pay in any mix of fiat/crypto.
About SSV Labs SSV Labs is a fast growing startup applying Distributed Validator Technology (DVT) to significantly enhance the security and decentralization of Ethereum staking. The protocol provides an open and simple infrastructure for splitting and distributing a validator key into multiple KeyShares, for the purpose of running an Ethereum validator across multiple non-trusting nodes. At the heart of a DAO-driven ecosystem, SSV Labs is dedicated to fostering a participatory and inclusive environment. Why join our team? We are a global team that are looking for people with diverse professional backgrounds to join and contribute their ideas and help in the company's success. You'll get to work in a transparent environment with the most innovative technologies, be constantly challenged and learn from like-minded professionals and leaders in the industry. We offer a platform for you to develop and achieve your career goals. We look forward to hearing from passionate, goal-oriented applicants ready to make their mark in the blockchain space.We are seeking a highly motivated and experienced Go developer to join our innovative team at SSV.network. In this role, you'll have the opportunity to work on cutting-edge technologies in the blockchain space, contributing to the development of distributed systems and cryptographic solutions. This is a unique chance to make a significant impact in a rapidly evolving crypto industry with a direct involvement on the ethereum ecosystem. If you’re passionate about building robust, scalable systems and thrive in a fast-paced, collaborative environment, we’d love to hear from you. Responsibilities:
Understanding of complex procedures and technologies. Work at a rapid pace with substantial ownership and autonomy. Work with the blockchain team to write tools and automations. Perform rigorous testing and debugging to ensure reliability and security across the network. Collaborate with all internal teams to deliver impactful solutions. Understand and work with complex algorithms dealing with DVT and cryptography. Optimize and maintain codebases for reliability, performance, and scalability.
Job Requirements:
At least 2 years of experience in go development. Any knowledge in blockchain/cryptocurrencies - Big Advantage! Startup background. Understanding of concurrency patterns and experience with multi-threaded programming. Strong technical and analytical skills, fast learner, independent, and able to deep dive into complex problems & find their root cause. Strong communication skills and a track record of collaborative problem-solving. Familiarity with distributed systems design and P2P networking - Big Advantage! Highly motivated, into details, self-starter, team player, eager to learn.
*We offer equal opportunities and ensure an inclusive recruitment for our global teams without consideration of race, gender, culture, or sexual orientation.
Apply Now:
We are seeking a Site Reliability Engineer to join our team to help streamline operations and maintain critical infrastructure. You’ll write custom code to automate operational tasks and support a fleet of nodes for multiple blockchain networks. You’ll also provide guidance and expertise to development teams to ensure their applications follow modern best practices. Your work will directly impact the health and stability of our L1.
ZetaChain is the first Universal Blockchain with native access to Bitcoin, Ethereum, Solana, and more, offering seamless UX and unified liquidity to the next billions of users. With its Universal EVM, ZetaChain empowers developers to build Universal Apps that operate natively across any blockchain, creating a fluid crypto ecosystem from a single platform.
Find out more about our ecosystem.
Find out more about our hiring culture: Dream Team Culture.
Our ideal candidate description is a wish list, not a checklist. We don’t expect every applicant to tick every box. If you have a strong alignment with many of the qualifications and a passion for learning, we’d love to hear from you.
A candidate who is a coder at heart with a diverse set of experiences. They should enjoy streamlining operations and building new services that include comprehensive monitoring.
Does this feel like the perfect fit for you or someone else you know? Reach out to email or hop in our Discord to get in touch with a team member.
The Nimbus team is looking for a Senior Engineer who will take ownership of Developer Experience. Someone who enjoys researching new technologies and building products for the decentralized web while being amid Open Source Libraries and P2P networks. This means writing cool products in Nim for Ethereum and Web3, crafting documentation and SDKs, plus representing the team at developer conferences and online events.
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.
Building the stack from the ground up, we’re translating the latest Ethereum research into practical, performant and reusable libraries to provide fertile exploration ground for further R&D. Check our latest update!
[Don’t worry if you don’t meet all of these criteria, we’d still love to hear from you anyway if you think you’d be a great fit for this role!]
[The steps may change along the way if we see it makes sense to adapt the interview stages, so please consider the above as a guideline. We’re looking for you to join our team as soon as possible].
We are happy to pay in either 100% fiat or any mix of fiat and/or crypto.
Gelatois an all-in-one Ethereum Rollup as a Service Platform built without limits. Designed to be super-fast, incredibly secure, and infinitely scalable, Gelato rollups allow anyone to build and deploy their fully serviced Layer 2 chains on Arbitrum, Optimism, Polygon, Celestia and more at a pace natively integrated with Web3’s favorite tools and services like Etherscan, The Graph, Pyth, Layer Zero and many more launching a production-ready web3 development environment from the Genesis block.
Technologies we use and teach: