Github jobs in crypto and blockchain companies

The InfoSec team at Chainalysis is focused on maintaining the security and integrity of our solutions. We collaborate with various teams to integrate secure practices into our development processes, build and manage security tools and dashboards, and oversee the security operations and deployment across our products and infrastructure.The Product Security Engineer at Chainalysis is dedicated to maintaining and enhancing the security of our products.. This role involves collaborating with developers to embed security into every stage of the product lifecycle, building custom security tools, automating assessments, and ensuring a robust security posture within our CI/CD pipelines. The Product Security Engineer also leads proactive efforts in vulnerability management, penetration testing, and security reviews to safeguard our products and continuously enhance our security practicesIn this role, you’ll: Conduct penetration testing and security assessments to identify vulnerabilities and ensure robust security measures.Develop and maintain custom security tools and scripts to automate and enhance security processes.Collaborate with development teams to integrate secure coding practices and solutions into both front-end and back-end systems.Review and improve security within CI/CD pipelines, integrating tools like SonarCloud and Wiz for continuous security assurance.Perform security audits and code reviews, offering guidance through pull requests and collaborative sessions.Analyze and address security issues by providing expert advice and actionable solutions to maintain the integrity of applications.We’re looking for candidates who have: Hands-on experience in penetration testing and security assessments, with a strong ability to identify and mitigate vulnerabilities.Excellent communication skills, both verbal and written, for effective collaboration with cross-functional teams.Proficiency with security tools like Burp Suite, Sonarcloud, Jfrog, and Wiz, and the capability to create custom scripts using Python to enhance automation.Proficient coding skills with a focus on security, particularly in Java and/or JavaScript. Alternative languages include Python and Go.Extensive knowledge of cloud security practices, specifically on platforms such as AWS and GCP.Experience integrating security tools into CI/CD pipelines, and a demonstrated ability to automate security testing within development workflows.Nice to have experience:Familiarity with blockchain or cryptocurrency security challenges and solutions.Experience with Infrastructure as Code (IaC), particularly reviewing and securing Terraform code.Certifications such as CISSP, OSCP, or similar credentials, demonstrating a formalized knowledge of security principles and practices.Technologies we use and teach:Coding Languages: Java, Python, and JavascriptIaC: TerraformCloud: AWS, GCP, CloudflareCI/CD Pipeline: GitHub, GitHub Actions, JenkinsAPIs: REST APIsAbout ChainalysisBlockchain technology is powering a growing wave of innovation. Businesses and governments around the world are using blockchains to make banking more efficient, connect with their customers, and investigate criminal cases. As adoption of blockchain technology grows, more and more organizations seek access to all this ecosystem has to offer. That’s where Chainalysis comes in. We provide complete knowledge of what’s happening on blockchains through our data, services, and solutions. With Chainalysis, organizations can navigate blockchains safely and with confidence.You belong here. At Chainalysis, we believe that diversity of experience and thought makes us stronger. With both customers and employees around the world, we are committed to ensuring our team reflects the unique communities around us. Some of the ways we’re ensuring we keep learning are an internal Diversity Committee, Days of Reflection throughout the year including International Women’s Day, Harvey Milk Day, World Humanitarian Day, and UN International Migrants Day, and a commitment to continue revisiting and reevaluating our diversity culture. We encourage applicants across any race, ethnicity, gender/gender expression, age, spirituality, ability, experience and more. If you need any accommodations to make our interview process more accessible to you due to a disability, don't hesitate to let us know. You can learn more here. We can’t wait to meet you. 

Join Tether and Shape the Future of Digital FinanceAt Tether, we’re not just building products, we’re pioneering a global financial revolution. Our cutting-edge solutions empower businesses—from exchanges and wallets to payment processors and ATMs—to seamlessly integrate reserve-backed tokens across blockchains. By harnessing the power of blockchain technology, Tether enables you to store, send, and receive digital tokens instantly, securely, and globally, all at a fraction of the cost. Transparency is the bedrock of everything we do, ensuring trust in every transaction. Innovate with TetherTether Finance: Our innovative product suite features the world’s most trusted stablecoin, USDT, relied upon by hundreds of millions worldwide, alongside pioneering digital asset tokenization services.But that’s just the beginning:Tether Power: Driving sustainable growth, our energy solutions optimize excess power for Bitcoin mining using eco-friendly practices in state-of-the-art, geo-diverse facilities.Tether Data: Fueling breakthroughs in AI and peer-to-peer technology, we reduce infrastructure costs and enhance global communications with cutting-edge solutions like KEET, our flagship app that redefines secure and private data sharing.Tether Education: Democratizing access to top-tier digital learning, we empower individuals to thrive in the digital and gig economies, driving global growth and opportunity.Tether Evolution: At the intersection of technology and human potential, we are pushing the boundaries of what is possible, crafting a future where innovation and human capabilities merge in powerful, unprecedented ways. Why Join Us?Our team is a global talent powerhouse, working remotely from every corner of the world. If you’re passionate about making a mark in the fintech space, this is your opportunity to collaborate with some of the brightest minds, pushing boundaries and setting new standards. We’ve grown fast, stayed lean, and secured our place as a leader in the industry.If you have excellent English communication skills and are ready to contribute to the most innovative platform on the planet, Tether is the place for you.Are you ready to be part of the future? About the job Overview We're seeking an experienced Senior Systems Administrator to architect, deploy, and maintain mission-critical infrastructure for our Tether Data Division. The ideal candidate will combine deep technical expertise with a security-first mindset. A suitable candidate should be credible and exhibit Strong problem-solving and analytical abilitiesExperience managing mission-critical systems with 99.99% uptime requirementsExcellent documentation and communication skillsProven track record of incident management and resolutionAbility to work independently and as part of a global teamStrong security, threat detection and mitigation experience Responsabilities Design, implement, and maintain high-availability infrastructure solutions at scale with hundreds of serversOrchestrate deployments and updates across our infrastructureImplement and maintain robust monitoring, alerting, and incident response systemsCollaborate with development teams to optimize application performanceConduct internal security audits and implement hardening measuresProvide technical mentorship to junior team members 5+ years of hands-on experience with Linux systems administrationStrong expertise in:Infrastructure as Code (Terraform, Ansible)Container orchestration (Docker/Podman)GPU container optimization and managementVirtualization platforms (QEMU/KVM)Network architecture (VPN, SDN, Load Balancing)Security practices and infrastructure hardeningNodeJS application deployment and scalingMonitoring and observability tools (Prometheus, Grafana)CI/CD pipelines (Jenkins / GitLab / Github CI)Cloud platforms (AWS, GCP)Version control systems (Git)Usage of FIDO2 and Yubikeys for server administration

SORAMITSU is an award-winning global financial technology company with expertise in developing blockchain-based solutions for digital asset and identity management. Our mission is to use blockchain to promote innovation and solve pressing societal challenges.SORAMITSU is the developer of and major contributor to the open-source blockchain platform Hyperledger Iroha, which is tailored for enterprise and public-sector use. Hyperledger Iroha, a project of Hyperledger Foundation, part of the Linux Foundation, has a permissions system that is scalable and performant.Utilizing blockchain, SORAMITSU has developed a digital currency for the National Bank of Cambodia, a CBDC Proof-of-Concept with the Bank of the Lao PDR, a closed-loop payment system for the University of Aizu in Japan, an identity verification system prototype for Bank Central Asia in Indonesia, we were finalists in the Monetary Authority of Singapore CBDC Challenge, and are currently participating in Asia-Pacific's first proof-of-concept test of a cross-border, multi-currency security settlement system using distributed ledger technology with the Asian Development Bank. We have also conducted proof-of-concept tests for several major Japanese enterprises, and are active contributors to open source projects, such as Klaytn, South Korea's leading Layer-1 blockchain, KAGOME, the C++ Polkadot Host implementation, the SORA crypto-economic system, the Polkaswap DEX, and the DeFi wallet, Fearless WalletBased on these experiences, SORAMITSU aims to deploy cutting-edge technology on a global level in order to expedite financial inclusion and health, mitigate economic inefficiencies, and contribute to the fulfilment of the Sustainable Development Goals.You can find out more by visiting our homepage at soramitsu.co.jp or check out our Twitter profile.We are looking for a creative and motivated Web Developer to join our Brand Experience team. In this role, you will be responsible for creating engaging marketing websites, landing pages, and documentation websites for all of our brands and products. The ideal candidate will be passionate about creating engaging, on-brand websites and able to work independently while delivering high-quality results efficiently.You will be responsible for:Create and maintain all marketing and documentation websites for our brands and products.Execute on all phases of the web development process within the Brand Experience team, ensuring mobile and desktop compatibility.Collaborate with Marketing and Product teams to ideate and implement innovative web concepts and solutions.Ensure high-quality visual aesthetics by translating designs into functional websites through code.Develop interactive animated visuals for the web using the latest technologies.Ensure our websites deliver optimal performance across all targeted platforms and browsers.Optimise for SEO and website performance.Assist in the daily duties of the Brand Experience and Marketing teams.Manage your responsibilities autonomously in a remote-first work environment.You need to have:A portfolio showcasing your web development skills, with at least four years of professional experience.Expertise in delivering responsive, high-quality websites using Vue 3 and Nuxt 3, along with full proficiency in HTML/CSS/JS.Experience with Figma and working with design systems.Familiarity with SVG, Canvas, and WebGL visualisation libraries.Proficiency in Git/GitHub.Experience in creating static websites.Familiarity with AI tools and a strong willingness to explore the latest AI solutions to enhance efficiency.A strong general interest in Web3, crypto, and blockchain technologies.Creativity, problem-solving skills, and strong attention to detail.Excellent time management skills, with the ability to meet deadlines and multitask effectively.Ability to handle ambiguity and incomplete information.Ability to take ownership and drive projects to completion.Ability to maintain a positive attitude while giving and receiving constructive criticism with empathy and understanding of diverse perspectives and cultures.Excellent communication skills in EnglishCVs will not be considered without an accompanying portfolio.Would be nice if you had:General experience in Web3, crypto and blockchain-related projects.Personal experience of using cryptocurrencies, and familiarity with decentralised exchanges, wallets, and DeFi protocols.Knowledge and broad understanding of enterprise blockchain solutions, including payment systems and identity systems.Knowledge of meme magic and its relevance in the crypto space.What we offer:A relaxed remote-first (work from anywhere) environment with flexible working hours.A full-time permanent role within a rapidly growing international team.An educational budget to support your growth and development.Opportunities to attend global meetups and conferences for learning and speaking engagements.The opportunity to join an award-winning team designing a better world through decentralised technologies.This is a remote position. Our distributed team is mostly spread across Europe and Asia. Team meetings are held generally during European working hours, and it is expected that you would adapt if necessary and be available accordingly.If you have the required qualifications and are passionate about the Web3 industry, we encourage you to apply for this exciting opportunity.SORAMITSU values diversity and is committed to providing equal opportunities for all applicants and employees. Our employment decisions, such as hiring, promotion, discipline, and termination, are based solely on an individual's qualifications, performance, and business needs. We do not discriminate against anyone on the basis of their race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, veteran status, or any other protected status under federal, state, or local law.

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!