Solidity jobs in crypto and blockchain companies

About Us Parity is one of the world's most experienced core blockchain infrastructure companies, having built and pioneered some of the most advanced technologies in the blockchain sector. Parity was founded by Dr. Gavin Wood, co-founder and former CTO of Ethereum, the primary engineer behind the Ethereum Virtual Machine (EVM), inventor of the Solidity programming language, and primary author of the Ethereum Yellowpaper. People in Our Collective Are Highly motivated to contribute to Parity’s mission and be part of something bigger Excited to work on projects that are groundbreaking and complex Autonomous workers that self-initiate, but also collaborate well with others Taking maximum accountability and having minimum ego at work Comfortable with chaos and adapting to the ever-changing Web3 space Continuously educating themselves about Parity and the wider ecosystem About the Team The Parity DevOps team is part of the Parity Infrastructure & Data department, made of more than 20 people. We are remote-first, but can also work from offices in Berlin, Lisbon, and London About the Position As the DevOps/SRE Team Lead, you will lead a team of 5 DevOps/SRE engineers responsible for maintaining the infrastructure and tools that support the development of Parity’s Polkadot SDK. Within the Product Engineering department, you will collaborate closely with cross-functional teams to ensure the reliability, scalability, and security of our systems. Your leadership and expertise will play a crucial role in advancing automation, enhancing efficiency, and optimising the performance of our entire technology stack. Lead a team of DevOps engineers, providing guidance, mentorship, and support Define and implement best practices for infrastructure automation, continuous delivery and cloud operations Provide strategic direction and contribute to the overall technology roadmap Drive the adoption of DevOps culture, practices, and tools across the organisation Collaborate with software development teams to streamline the build, deployment, and release processes Establish and maintain robust monitoring, alerting, and logging systems to ensure system reliability and availability Continuously evaluate and implement new technologies and tools to improve efficiency and productivity Liaise with stakeholders to gather requirements, prioritise projects, and communicate progress About You Strong leadership and team management skills, with the ability to inspire and motivate others Strong understanding of containerization technologies such as Docker and orchestration tools like Kubernetes Experience with multiple cloud providers such as AWS, GCP, Azure, DigitalOcean, OVH, Scaleway, etc. Experience leveraging Infrastructure as Code (eg. Terraform, Ansible) and GitOps (eg. ArgoCD, FluxCD) tooling. Expertise in Linux-based systems Proven experience managing infrastructure teams, and  overseeing large scalable, resilient and observable systems Strong communication, collaboration, and interpersonal skills About Working for Us Competitive remuneration packages based on iterative market research, including tokens (where legally possible) “Future of work” environment that’s remote-first and self-initiating with flexible hours Team mates that are genuinely excited about their impact and projects Access to the brightest minds in this space to learn about Web3 and develop your skills and knowledge while on the job Becoming part of the wider ecosystem (career and networking opportunities) Team and company-wide retreats Work laptop Opportunity to relocate to Germany or Portugal (with visa sponsorship) Those joining our collective as an employee in Germany, Portugal, and the UK, also enjoy benefits such as healthcare, parental leave, PTO (28 days per year) and local team events. Parity is an Equal Opportunity Employer. We welcome diversity in our global team and care about everyone in our collective feeling included and welcome. View our Applicant Notice to see how we use your data. Is this position not quite your match? Browse our other open roles.

The Role:   We are looking for a Senior Symfony developer for one of our clients. You are a perfect candidate if you are growth-oriented, you love what you do, and you enjoy working on new ideas to develop exciting products and growth features.  What we are looking for: 5+ years experience working with PHP 3+ years experience working with Symfony 4 or newer Strong, demonstrated experience writing PHP unit tests Strong experience with DDD Regular experience working with Docker Familiarity with queue systems such as RabbitMQ and Amazon SQS Familiarity with MySQL, Redis, and MongoDB Understanding of event-driven architecture, microservices patterns and JSON Working knowledge of Javascript development Strong written and verbal communication skills Ability to think and work independently   Responsibilities:  Work as part of a team to deliver digital solutions across web and mobile platforms Translate high-level requirements into executable software designs Implement software solutions using Symfony  Ensure all code is thoroughly tested and meets development criteria Identify and address technical debt in the codebase    What Proxify offers   Career-accelerating positions at cutting-edge companiesDiscover exclusive long-term remote engagements at the world's most interesting product companies. Hand-picked opportunities, just for youSkip the typical recruitment roadblocks and biases with personally matched engagements. Fast-track your independent developer careerStart small and gain more freedom to take on new engagements as you build your independent developer career. A recruitment process that values your timeOnly one hiring process with the possibility of several positions, without any additional tests.

About us Founded in 2015 with the mission to protect the open economy, OpenZeppelin is the world leader in securing blockchain applications and smart contracts.  Its bedrock open source Contract Libraries are a public good and industry standard for smart contract development. OpenZeppelin’s professional expertise, unified with the Defender developer security platform, integrates through clients’ development lifecycles, so teams can plan, code, audit, deploy and operate projects faster and more safely. Please note: Always refer to OpenZeppelin's official job page for the most accurate information about our open roles, as we have seen multiple third party job sites posting inaccurate information. About the role: OpenZeppelin is seeking an experienced, customer-facing Technical Project Manager with a proven track record of delivering on time to join the Security Research team and take ownership of the entire security audit delivery process.  This person will work closely with other constituencies across the organization including the Sales, Marketing, Operations, and Executive Leadership teams. What you'll be doing: Own and nurture relationships with OpenZeppelin’s client base. Respond to inquiries from existing customers, ensuring client retention and satisfaction. Establish trusted relationships with each client to drive continued value from our products and services. Ensure that clients' technical needs are met and exceeded. Follow up on client interactions to identify and develop new business opportunities. Lead client kick-off meetings and serve as the primary point of contact for all communications throughout the delivery process. Manage scope creep by utilizing a structured change order process, ensuring project scope remains controlled and clearly defined. Evaluate and escalate issues to management as necessary, facilitating prompt and effective resolution. Oversee the entire end-to-end process of client deliveries, including final review and coordination of publishing. Collaborate with Security Research team leaders to manage and ensure quality control throughout the project lifecycle. Monitor team performance against key metrics, such as resource utilization and allocation, to ensure optimal efficiency and project success. Automate and enhance the delivery process using our internal tools (GitHub, Notion, Slack, HubSpot) to improve efficiency and streamline workflows. You have: 5+ years of experience in Technical Project Management, Technical Program Management, Technical Account Management , Solutions Architect or similar roles. An advanced English level and great communication skills (oral and written). Passion about the blockchain space and decentralization. You have a technical background and are comfortable with reviewing code at a high-level for estimation purposes and code management tools (GitHub especially). Superb organization and project management skills with the ability to work on and manage multiple complex projects with many stakeholders at the same time. Excellent interpersonal and communication skills and a demonstrated ability to communicate with clients on both technical and non-technical topics. Advanced knowledge of project management tools and familiar with Notion, Linear and GitHub. Demonstrated experience working with professional services scheduling software. Nice to have: Technical experience with blockchain technologies, Solidity, or cybersecurity. Project management certification (PMP, Scrum Master, etc). Advanced knowledge of GitHub. PMO or other people management experience. Logistics: All positions at OpenZeppelin are 100% remote, however you must be located/able to work in the Americas or European time zones to be considered for this position. Our interview process takes place on Zoom and tends to consist of the following stages: Recruiter Call (45mins) Hiring Manager Call (45mins) PM Team Interview 60mins) Leadership Interview (30mins) Paid work test (Lasting up to 10 days) Reference checks Benefits Company in-person gatherings in different locations around the world 😎 Fully remote work 🌎 Flexible time off 🏝 Paid parental leave for primary or second caregiver 💙 One time work-from-home equipment stipend of up to $500 USD 🪑 Co-working (up to $250/month) 👩‍💻 Medical coverage Annual Learning & Development budget 🧠 Referral program Work with a global team in a fast-growing industry 🚀 At OpenZeppelin, we are an equal opportunity employer and we value different perspectives. We are committed to building a diverse workforce. This includes but is not limited to gender, race, sexual orientation, religion, national origin and other characteristics that make each one of us unique. In this uniqueness, we find the most value. Come join us!  

About us Founded in 2015 with the mission to protect the open economy, OpenZeppelin is the world leader in securing blockchain applications and smart contracts.  Its bedrock open source Contract Libraries are a public good and industry standard for smart contract development. OpenZeppelin’s professional expertise, unified with the Defender developer security platform, integrates through clients’ development lifecycles, so teams can plan, code, audit, deploy and operate projects faster and more safely. Please note: Always refer to OpenZeppelin's official job page for the most accurate information about our open roles, as we have seen multiple third party job sites posting inaccurate information. The ZK Practice The Zero-Knowledge Practice at OpenZeppelin is responsible for the execution and delivery of cryptography audits and circuit audits for the world’s leading web3 organizations and protocols. The team currently consists of security researchers, applied cryptographers and theoretical cryptographers who perform audits and advisory with direct client contact and conduct independent zk-research that culminates in academic publications, blog posts and conference talks. We are now looking to expand this team by one additional applied cryptographer to increase the overall capacity and expand the diversity of academic backgrounds. What you'll be doing Analyzing the security of circuit construction and cryptographic components in support of audits of succinct and/or zero-knowledge proofs for blockchain protocols. Researching new mathematical approaches based on novel cryptography research available in academia. Teaming up with other auditors to review zero-knowledge circuits line by line to try to hack them. Educating the community about zero-knowledge technology and relevant security considerations through series of blog posts. Leading research and contributing to OpenZeppelin’s projects and knowledge bases. Training new team members in zero-knowledge technology. Speaking at ZK conferences around the world. You have PhD or equivalent experience in cryptography, computer science, mathematics, engineering, or related field. In depth algorithmical and mathematical understanding of zero-knowledge proof systems and related cryptographic primitives. Experience implementing cryptographic components in one or more of: Rust, Go/Golang, Solidity, Circom, ZoKrates, Cairo. Proven track record of achieving significant results as demonstrated by grants, fellowships, patents. Publications at leading workshops or conferences at any of the IACR flagship conferences (EUROCRYPT, CRYPTO, ASIACRYPT, etc.). Intellectual curiosity and the capability to learn complex topics independently. An advanced English level and great communication skills (oral and written). The ability to work independently, with minimal supervision. Passion about the blockchain space and decentralization. Ability to work collaboratively in a distributed team. Nice to have Experience analyzing the security of blockchain protocols. Experience building or analyzing STARK-based and/or FRI-based systems. Experience contributing to a major zk library (e.g. Halo2). In-depth knowledge of implementations of elliptic curve cryptography. Experience developing applications using PLONK or recursive zk-proofs. Experience working with L2 scaling protocols or privacy applications Experience participating in zk-themed CTF competitions. Logistics Our interview process takes place on Zoom and tends to consist of the following stages: Recruiter call (45 minutes) Hiring Manager call (1 hour) Team member interview (1 hour) Paid work test (Lasting multiple days) Reference checks Please let us know if you require any accommodations for the interview process, and we’ll do our best to provide assistance. Benefits Company in-person gatherings in different locations around the world 😎 Fully remote work 🌎 Flexible time off 🏝 Paid parental leave for primary or second caregiver 💙 One time work-from-home equipment stipend of up to $500 USD 🪑 Co-working (up to $250/month) 👩‍💻 Medical coverage Annual Learning & Development budget 🧠 Referral program Work with a global team in a fast-growing industry 🚀 At OpenZeppelin, we are an equal opportunity employer and we value different perspectives. We are committed to building a diverse workforce. This includes but is not limited to gender, race, sexual orientation, religion, national origin and other characteristics that make each one of us unique. In this uniqueness, we find the most value. Come join us!  

The Sui Foundation exists to support the development, growth and adoption of the Sui network. Sui is the first permissionless Layer 1 blockchain designed from the ground up to enable creators and developers to build unique Web3 experiences from gaming to finance. The Sui Foundation is committed to three decentralization principles; Embrace transparency and level the playing field, Communicate openly to build a culture of trust, and Engage directly with the community.Mission:Onboard the next billion users to web3 by supporting the advancement and global adoption of the Sui blockchain.Vision:To create a better world that unlocks opportunities through universal access and individual ownership.The Role:The Developer Relations team engages with the developer community online and in person to provide expert help and guidance in building next-generation Web3 applications on Sui. By talking to the community and understanding developer pain points, the team creates a rapid and positive feedback loop between the developer community and the protocol.As an engineer on the Developer Relations team, you will have or develop a technical understanding of the Sui protocol as well as a proficiency in writing Sui Move. You will have or develop an understanding of the Sui ecosystem by using developer tooling and testing apps. You will use your newly-developed knowledge to collaborate and connect with developers, enabling them to build and innovate on Sui.You will use your excellent communication skills to explain complex concepts to a wide variety of audiences, such as Web2 developers and Solidity developers, and through a variety of mediums, including documentation, tutorials and workshops.As an experienced engineer, you will be able to operate on your initiative, prioritize work streams based on impact, and manage cross-functional teams.This role is an exciting opportunity for someone who enjoys high-impact, complex, and multi-disciplinary programs. Experience of Move (or Rust) is a positive that will enable the role to be picked up quickly, but fast learners are also welcome!Responsibilities:Understand the community's goals, and provide technical expertise and direction to help the developers navigate their journey of building on Sui.Create and own the feedback loop between the community and the network.Translate developer feedback into meaningful product insights for future product development.Develop and deliver remote and in-person training sessions and workshops for new and existing Sui developers.Requirements:Based in APAC.7+ years of Software Engineering or combination of Software and DevRel Engineering experience.Strong written and verbal communication skills.Strong interest in Web3.Good understanding of developer profiles, developer markets and trends within Europe, gained either through developer-facing work experience or personal intuition.Nice to Have:Prior DevRel experience, or related developer-facing function (e.g. Solutions Engineering).Experience with blockchain, cryptography and/or Web3 engineering.Experience with Move and/or Rust programming language(s).Our team is 100% remote and we are hiring across the world. Here at the Sui Foundation, you’ll be joining a world-class team with tremendous growth potential as we bring the next billion users to web3.