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As stewards of the Polkadot and Substrate ecosystem, Parity is laying the foundation for a better web. We believe in a decentralised web that respects the freedom and data of individuals and empowers developers to create better services. Our vision is to create a world based on truthful, rather than trustful, interactions.
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.
With a remote-first, global team, Parity is building open-source technologies for developers and organisations to implement and build upon. Our Web3 tech stack includes Polkadot, Substrate, and Kusama.
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
The Proof of Personhood team is responsible for the design, development and maintenance of Polkadot's decentralized proof of personhood mechanism based on novel ZK cryptography to maintain privacy for participants. This involves implementing cutting edge methods for determining a person's individuality and features available only to proven people, such as Sybil-resistant voting.
We are looking for new engineers to join the Proof of Personhood team. In this position, you will:
Design and implement the people-related business logic that will be used for the Polkadot Proof of Personhood protocol and teams building applications on it
Work on complex, multi-chain problems
Work with ZK cryptography to innovate and find new ways of providing decentralized and privacy-focused functionality to recognized people
Design end-to-end test suites to test multi-chain applications
Work autonomously and solve problems independently
Collaborate with others in an open-source culture, work well with peer review as a reviewer and reviewee
Possess a good understanding of system design and an ability to work with complex systems
Take ownership of their work and be responsible for outcomes. They know that finishing a project doesn’t mean finishing the first version of the code. They evangelise their work and seek and incorporate feedback
Have good communication skills, they can present their work in “plain English” in blog posts or conferences
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
Teammates 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, Switzerland and the U.K. also enjoy benefits such as health care, parental leave, PTO (28 days per year), local team events, yearly L&D budget, and language classes.
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.
Apply Now:
About Aztec At Aztec, our goal is to add privacy to Ethereum. In the current public blockchain paradigm, users and entities unknowingly broadcast data in the public, compromising privacy and security to get trustlessness. Not only are unencrypted blockchains inherently privacy-exposing, they require significant redundancy to compute and verify the legitimacy of transactions. Implementing scalable encryption in a public blockchain paradigm requires cutting-edge math and engineering. Thankfully, our team of scientists and engineers invented Plonk, the industry-standard zkSNARK, and Noir, the universal language of zero knowledge. Now, we’re building a first of its kind Layer 2 with private smart contracts. This requires new cryptographic primitives, a zero-knowledge DSL for writing contracts, a privacy-friendly execution environment, a carefully designed set of circuits that prove the validity of the chain to L1, a decentralized block-building and proving mechanism, and a top-tier user and developer experience. And it’s now time to bring it to market. We’ve raised $125 million from industry-leading investors including a16z crypto, Paradigm, Variant, Consensys, and a_capital, and we’re growing quickly.In this role, you will:
Craft accurate and engaging technical documentation for the Aztec tech stack (SDK, APIs, infrastructure, zk-SNARK circuits) that supports developers building on our platform. Write technical blog posts, guides, tutorials, and partner content that bridges engineering depth with marketing clarity. Collaborate with engineering and developer relations teams to create onboarding materials, FAQs, and integration guides that help developers get started and go deep. Support go-to-market efforts by contributing technical content for announcements, partner integrations, and product launches. Own and evolve Aztec’s technical content standards, ensuring consistency, clarity, and approachability across all developer-facing materials. Collect and synthesize developer feedback, identify documentation gaps, and proactively fill them with targeted content. Partner with the marketing team to ensure technical accuracy in messaging and campaigns while maintaining brand alignment. Be a champion for external developers inside Aztec—advocating for their needs and helping the team communicate with them effectively.
About you:
4–6+ years of total experience, including 3+ years as a technical writer, developer advocate, or similar role at a technology-focused company. Deep familiarity with software engineering concepts; bonus points if you’re a self-taught or former developer. Demonstrated experience writing for both developer and non-developer audiences. Experience working with Ethereum or similar blockchain ecosystems is strongly preferred. Exceptional communication skills—you can explain deeply technical ideas clearly and concisely, adapting your voice and level of detail to the audience. You thrive in a fast-moving, ambiguous environment and take initiative to identify and solve problems. Passionate about zero-knowledge cryptography, blockchain, and the broader crypto space.
Bonus points for:
Prior experience working at a developer-focused company or managing developer community content. Experience writing video or presentation scripts for dev-focused events or product demos. Fluency in additional languages (Spanish, French, Hindi, Mandarin).
What We Offer:
Flexible, remote-first culture with HQ in London. Competitive salary + equity/token options. 25 days annual leave + bank holidays. Health, dental, and retirement benefits (based on location). Quarterly offsites for team collaboration and bonding. Conference and learning budget for continual professional development. A chance to work on truly cutting-edge zero-knowledge infrastructure with some of the best minds in the field.
Aztec Labs is an equal opportunity employer and we value creativity, diversity, and intellectual curiosity. If you're passionate about leveraging your creative talents to make a real-world impact, and if you want to be part of a team that's shaping the future of digital privacy, then we would love to hear from you.
Apply Now:
Blockstream is the leading Bitcoin company, providing cutting-edge infrastructure solutions for enterprises, institutions, and individual Bitcoin users. We develop industry-leading Bitcoin self-custody solutions, Bitcoin-based financial products, second-layer scaling technologies, and enterprise-grade blockchain infrastructure.We are looking for a Developer Advocate to join our Research team, with a focus on Simplicity. This role sits at the intersection of engineering, research, and community, helping developers, researchers, and ecosystem partners understand and build with advanced blockchain technologies. You will act as a bridge between our research engineers and the wider developer community, promoting understanding of Simplicity and other advanced Bitcoin technologies, gathering feedback, and contributing to developer tools, documentation, and educational content. What You’ll Be Doing (Responsibilities):
Champion Simplicity and related research-driven technologies to the developer ecosystem. Create technical content: tutorials, documentation, blog posts, videos, sample code, and reference applications. Speak at conferences, meetups, and online events to represent Blockstream research and Simplicity.Engage with developers on forums, GitHub, and other channels, answering questions and providing guidance. Work closely with the research team to translate complex ideas into accessible resources.Collect feedback from the community to inform product and research directions. Contribute to open-source projects, developer tooling, and demos that make using Simplicity easier.
What We Look For In You (Required Qualifications):
Proficiency in Rust, OCaml, Haskell, or similar functional programming languages. Strong background in software engineering, ideally in a Bitcoin-related field, cryptography, or functional programming. Experience writing and delivering developer-focused educational materials. Excellent communication skills, both written and verbal. Familiarity with Bitcoin, blockchain protocols, and smart contract systems. Comfortable engaging with technical communities online and in person. Self-starter who thrives in a distributed, research-driven environment.
Nice To Haves (Preferred Qualifications):
Prior experience with formal verification, type theory, or DSL design. Active contributor to open-source projects.
Apply Now:
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.
Vac builds public good protocols for the decentralized web. We do applied research based on which we build protocols, libraries and publications.
This role is within the the Vac Incubator Project “Nescience”, which is developing a state separation architecture with selective privacy.
In this role, you will be responsible for maintaining our Rust code base, transforming research prototypes into production and collaborating with researchers, prototyping ideas, measuring performance, and conducting code reviews, and shaping engineering culture.
Your responsibilities will include planning, implementing, and shipping end-to-end functionality in monthly release sprints. As well as profiling bottlenecks, hardening cryptographic components, and writing property-based tests.
The ideal candidate should be comfortable with modern cryptography, familiar with zero-knowledge virtual machines (zkVMs) and experienced with blockchain or other peer-to-peer systems, and motivated by decentralisation and privacy.
[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. Just explain to us why in your cover letter].
The hiring process for this role will be:
The expected compensation range for this role is negotiable, dependent on how we assess your skills and experience throughout our interview process. We are happy to pay in any mix of fiat/crypto.
About SSV Labs SSV Labs is the core team behind the SSV Network - pioneering decentralized infrastructure for Ethereum staking. We’re building tools, protocols, and standards to make staking more secure, scalable, and trustless. Our flagship upgrade, SSV 2.0, brings that vision to life. It’s a fully modular, next-gen staking layer that enables anyone to run validators with decentralized, non-custodial node operators. With built-in MEV support, advanced slashing protection, and performance at scale, SSV 2.0 is the foundation for Ethereum’s future. 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. If you're a Solidity Developer looking to make an impact at a fast-growing crypto startup, this is the position for you! You will play a pivotal role in defining the next generation of secure, scalable blockchain infrastructure. Your innovations will directly impact a global network of validators and the integrity of Layer‑2 ecosystems. You will be a crucial member of a small team that is building the future of decentralized staking. Responsibilities:
Design and develop secure and robust smart contracts following security and efficiency best practices. Research and study existing and upcoming protocols and applications of leading players in the Ethereum Staking ecosystem to evaluate and design means of integrations. Define and execute comprehensive test suites—unit tests, integration tests, fuzz testing, property‑based tests, and scenario simulations. Work as a key member of the contracts team to architect, specify, and implement your research findings. Continuously evaluate and improve the security, scalability, and efficiency of our contracts. Collaborate with product managers, designers, frontenders, and other developers. Report progress in a transparent, accountable manner; escalate risks and failures promptly; share learnings and documentation. Work at a rapid pace with substantial ownership and autonomy.
Your Experience & Qualifications:
Deep conceptual and technological understanding of Ethereum At least 3 years of experience in Solidity development At least 5 years of development experience Experience with at least one other programming language (Go/ Python/ JavaScript) and Ethereum development framework (Hardhat/ Foundry) Deep familiarity with Optimistic Rollups: challenge periods, fraud‑proof design, sequencing. Deep familiarity with ZK‑Rollups (e.g. zkSync, StarkNet, Polygon zkEVM): validity proof systems, prover/ verifier pipelines, circuit design. Familiarity with trust‑minimized cross‑chain protocols. "Can-do" mentality and team player qualities Experience with picking up existing open-source solutions and working with them - Advantage Strong knowledge of common algorithms and data structures, specifically within the Solidity scope where gas optimization is important Previous experience integrating systems/apps in Ethereum, such as bridges, connecting dApps, or contracts Familiarity with cryptography - Advantage BSc degree in Computer Science or relevant field or equivalent - Advantage Any knowledge of Blockchain/ Digital Currencies / Staking - Advantage *We offer equal opportunities and ensure an inclusive recruitment for our global teams without consideration of race, gender, culture, or sexual orientation.
Apply Now:
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 requires a specialized role to bring in-depth knowledge and experience with ZK proofs and related tools and frameworks. This expertise will facilitate expedited prototyping, research, design of the proving system, and help in developing ZK-friendly solutions for the requirements of multiple components of the Nomos blockchain. The constant flux of tasks, varying in size and scope, requires a team member who can seamlessly integrate into the team and contribute immediately.
[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 hiring process for this role will be:
The expected compensation range for this role is $110,000 - $190,000 (negotiable, dependent on how we assess your skills and experience throughout our interview process). We are happy to pay in any mix of fiat/crypto.
OKX will be prioritising applicants who have a current right to work in Singapore, and do not require OKX's sponsorship of a visa.
Who We Are
At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom. OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. Across our multiple offices globally, we are united by our core principles: We Before Me, Do the Right Thing, and Get Things Done. These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more.
About the Opportunity
OKX is undertaking a significant global team buildout within its Internal Audit function, and we are looking for an experienced and visionary Head of Infrastructure & Developer Operations Audit. This is a unique opportunity to lead the assessment and assurance of our critical infrastructure and DevOps practices within a leading crypto organization, ensuring the highest levels of resilience, scalability, and security for our global operations. You will build and lead a high-performing audit team, drive strategic assurance initiatives, and directly impact the robust and efficient delivery of innovative crypto products and infrastructure by thoroughly assessing the organization's codebase, build, test, and release processes, as well as technical infrastructure maintenance and management.
What You’ll Be Doing
Lead and manage a global Infrastructure & Developer Operations audit team, including hiring and developing individuals across key regions.
Drive the execution of global audit programs, specifically assessing the design and operating effectiveness of controls over infrastructure, cloud computing platforms, operating systems, networking, virtualization, containerization, storage systems, DevOps practices, and Secure CI/CD pipelines. This includes a deep dive into the codebase, build, test, and release processes.
Oversee the independent validation of IT incidents related to infrastructure and development operations, and provide critical audit support for group-wide IT certifications.
Collaborate effectively with other functional and regional Internal Audit portfolio leads to provide expert infrastructure and DevOps controls testing and assurance for integrated audits.
Develop and implement advanced audit methodologies tailored to the unique complexities of high-performance, distributed crypto systems, emphasizing the assessment of automated and secure deployments, and ongoing maintenance and management processes.
Provide strategic audit insights and independent assurance on emerging infrastructure and DevOps risks in the cryptocurrency space to senior leadership and the Audit Committee.
What We Look For In You
We are seeking a seasoned IT audit professional with demonstrable experience in independently assessing infrastructure and DevOps practices within the crypto exchange or crypto product space. The ideal candidate will possess a deep understanding of resilient and secure infrastructure principles applied to novel technical and control environments, coupled with strong leadership and analytical skills. Key Qualifications:
Prior Crypto Exchange/Crypto Product Experience is Essential.
Strong Critical Thinking and Problem-Solving Skills: Capacity to analyze complex, often novel, technical and control environments unique to crypto, identify intricate root causes of issues, and propose effective, context-specific solutions.
Fundamental Understanding of Blockchain Technology: Basic knowledge of distributed ledger technologies, consensus mechanisms (e.g., PoW, PoS), cryptography (hashing, public-key), and the lifecycle of a cryptocurrency transaction.
Data Analytics/SQL for Infrastructure & DevOps Auditing: Expert ability to analyze complex data across the entire technology stack, including CI/CD pipeline logs, git commit history, dependency manifests, configuration management logs, system logs, network flow data, infrastructure-as-code configurations, and cloud provider logs, specifically for audit purposes.
Infrastructure Auditing: Comprehensive knowledge of IT infrastructure components, with a specialized focus on independently auditing the resilience, scalability, and security of blockchain nodes, low-latency trading systems, and high-availability wallet infrastructure.
Cloud Computing Platform Auditing: Expert-level auditing of cloud infrastructure (AWS, Azure, GCP) specifically for mission-critical crypto workloads, including container orchestration (Kubernetes), serverless functions, multi-region deployments, and ensuring geo-redundancy for key assets.
Operating System (OS) Auditing (for Blockchain Nodes & Exchange Servers): Deep dive capability to assess the hardening, patching, kernel configurations, and user access controls for operating systems hosting blockchain nodes, trading engines, and critical exchange services.
Networking Auditing: Advanced knowledge of networking protocols, DDoS mitigation strategies, and the ability to audit low-latency, high-throughput network architectures essential for competitive crypto exchange operations, including peering arrangements and BGP configurations.
Virtualization & Containerization Auditing: Expertise in independently auditing virtualized environments and container orchestration platforms (Docker, Kubernetes) specifically for secure isolation of critical workloads, supply chain security for container images, and resource management to prevent denial-of-service.
Storage System Auditing: Ability to independently assess the security, integrity, availability, and immutability of storage systems (SAN, NAS, object storage) for critical blockchain data, cryptographic keys, and sensitive audit logs.
DevOps Auditing: Deep understanding of DevOps principles (e.g., build, test, release), automation, and continuous delivery with a focus on independently auditing the security and compliance of rapid, automated deployments in a high-stakes crypto environment (e.g. GitLab, GitHub, etc.)
Secure Continuous Integration/Continuous Delivery (CI/CD) Auditing: Expertise in independently auditing CI/CD pipelines for integrated security tools (SAST, DAST, SCA), automated security gates, secure artifact management, and robust deployment controls for smart contracts and exchange software. This includes assessing the codebase, build, test, and release processes.
Automation and Scripting Auditing (for Infrastructure as Code & Smart Contracts): Ability to independently assess the security and integrity of automation scripts (e.g., Python, Go, Shell), Infrastructure as Code (IaC) tools (e.g., Terraform, CloudFormation), and configuration management tools (e.g., Ansible) used to manage crypto infrastructure.
Cloud Deployment & Management Auditing (Automated & Secure): Expertise in independently auditing automated cloud provisioning, configuration, and management processes, emphasizing security best practices, least privilege, and immutable infrastructure principles for critical crypto components, as well as ongoing maintenance and management.
Agile Development Methodologies Auditing: Ability to independently assess the deep integration of security activities and controls within agile development processes, including proactive threat modeling for new features, security champions within development teams, and rigorous peer review for smart contract code.
Code Review & Secure Coding Practices: Familiarity with secure coding principles for languages commonly used in blockchain development (e.g. Solidity, Rust, Go, Python) and the ability to independently evaluate the effectiveness of code review processes for identifying operational and security flaws.
Risk Management Principles for Infrastructure & DevOps Auditing: Advanced grasp of risk identification, assessment, mitigation, and monitoring methodologies specifically tailored to the high-stakes, real-time, and often irreversible nature of crypto transactions.
Knowledge of Specific Regulatory Requirements impacting Infrastructure & DevOps: Understanding of specific regulatory requirements impacting crypto exchanges globally (e.g., anti-money laundering (AML), combating the financing of terrorism (CFT) as per FATF, sanctions compliance, specific licensing requirements for Virtual Asset Service Providers (VASPs)) and how these translate to technical controls relevant to infrastructure and DevOps.
Perks & Benefits
Competitive total compensation package
L&D programs and education subsidy for employees' growth and development
Various team building programs and company events
Wellness and meal allowances Comprehensive healthcare schemes for employees and dependants More that we love to tell you along the process!
Apply Now:
Building the Future of Blockchain & AI in Asia-Pacific
Nethermind is seeking an experienced technical leader to drive our product innovation and engineering excellence across Asia-Pacific. Reporting to the APAC Regional Managing Director (RMD), you’ll lead the technical execution of our regional strategy while building world-class products that bridge blockchain and AI technologies for enterprise clients.
This is a senior technical leadership role where you’ll have significant autonomy over product and engineering decisions while working closely with regional leadership to achieve our ambitious growth targets. You’ll have the autonomy of a founder with the backing of a global blockchain leader, shaping the future of enterprise blockchain and AI solutions across the world’s most dynamic markets.
Transform Nethermind’s APAC presence from a promising footprint into a revenue-generating powerhouse by building world-class products that bridge blockchain and AI technologies for enterprise clients across the region.
As a key member of the APAC leadership team reporting to the Regional Managing Director, you will:
The RMD sets the overall regional strategy and business targets, while you ensure technical execution excellence and product delivery to meet those objectives.
We offer an entrepreneurial compensation package that aligns your success with Nethermind’s growth in APAC. While our base salary is competitive, the real opportunity lies in building significant wealth through equity participation and performance-based incentives. We’re looking for leaders who see beyond immediate compensation to the massive value creation opportunity in building APAC’s blockchain infrastructure.
At Nethermind, we celebrate diversity and are committed to creating an inclusive environment for all team members. We believe a variety of perspectives drives innovation and leads to better solutions for the blockchain community.
If you’re passionate about blockchain and eager to make an impact, we’d love to hear from you. Click Apply for this job to start your journey with Nethermind.
Job Description:
Winnables.com is looking for a creative front-end-leaning Full Stack Developer who loves bringing slick, engaging user experiences to life while still caring about the behind-the-scenes details.
You’ll collaborate closely with designers and product leads, iterate quickly on new ideas, and see the direct impact of your work in the hands of players around the world.
If you enjoy mixing imaginative front-end polish with just enough back-end know-how to make the magic happen, we’d love to hear from you.
Key Responsabilities:
What You’ll Be Building
Tech Stack:
What We're Looking For
Nice to Have
Winnables.com is on a mission to re-imagine iGaming through full on-chain transparency. We believe players deserve provably fair odds, transparent math, and no black-box RNGs. Every spin and ticket purchase is recorded immutably on Ethereum, so anyone can audit the outcome, track prize pools, or even build their own analytics on top of our contracts.
All of our games are designed and engineered 100% in-house by a small, senior team that blends game design, cryptography, and smart-contract security. We currently operate two flagship experiences:
We’re still just getting started. The roadmap is full of green-field challenges—and real, measurable impact on an industry ripe for change. Join us and help craft the next generation of fair, fun, and truly player-owned gaming.
Apply Now: