As stewards of the Polkadot and Substrate ecosystem, Parity is laying the foundation for a better web that respects the freedom and data of individuals and empowers developers to create better services through decentralised technology. The internet is too important to billions of people for it to be at the mercy of a few powerful companies.

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.

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. Our mission is to make Polkadot the most active and innovative community in blockchain.

About the Team

The role is part of the Smart Contracts team which is responsible for supporting the execution of smart contracts on Polkadot. This ranges from low level software like PolkaVM and revive to our smart contract execution environment.

About the Position

We are looking for new Software Engineers to join the team, specifically for work on PolkaVM and the revive recompiler. You will...

• Work on a state-of-the-art RISC-V based virtual machine and an LLVM-based EVM to RISC-V recompiler
• Create comprehensive benchmark suites to track and improve performance against competing technologies
• Integrate those technologies into our smart contract execution environment

About You

• You have experience or are excited to learn about things such as...
• Virtual machines, RISC-V, AMD64 assembly, dynamic recompilation, bytecode interpreters, compilers (in particular code optimization and machine code generation), low level memory management, low level operating system interfaces (Linux in particular), security sandboxing, performance engineering, zero knowledge proof systems in general and zero knowledge virtual machines in particular
• You work autonomously and solve problems independently
• You work well in a collaborative, open-source culture and environment
• You take ownership of your work and actively see it through to the end, gathering and incorporating feedback as you progress
• You have good communication skills and you can present your work in “plain English”, not only to your colleagues, but also in blog posts or at conferences

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

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.

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Brave is looking to hire a Computer Science PhD Intern - Machine Learning to join their team. This is an internship position that can be done remotely anywhere in North America, Europe or the United Kingdom.

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About us:

Avara builds innovative products leveraging blockchain technologies. Avara’s suite includes the Aave Protocol, along with the native stablecoin GHO, Lens, an open social network, and Family, a design-first mobile crypto wallet. Avara’s vision is to build a people-powered internet that benefits all.

Our culture:

Having cultivated a thriving, collaborative culture, our team is kind, welcoming and passionate about what we are building. We celebrate differences and seek to develop and retain the most talented people from a diverse candidate pool from all over the world. No matter where you are based, no ghost will be left behind and we appreciate every moment we get to work and have fun together.

About the Role:

As a Principal Engineer at Avara, you will lead the design and implementation of regulated payments infrastructure. Your expertise will enable seamless money movement and high-conversion payment acceptance across Avara’s products and partner ecosystem. Together, we will build bridges, remove toll booths, and increase financial access for billions of people.

How you can make an impact:

• Oversee the end-to-end process of designing, implementing, and deploying regulated payments infrastructure
• Ask questions, uncover edge cases, and tend to our documentation
• Go fast, be agile, but also know when to slow down. As a regulated payments business, we need to take some decisions slowly in order to design for zero-defects and massive scale
• Obsess over transaction processing speed and clear communication with Customers. This is how we build trust.
• Maintain short feedback cycles through communicating priorities, failing forward, and learn as a team

Let’s connect if:

• Minimum of 3 years in a Staff or Principal Engineering role, with a strong preference for experience in Fintech and Payments
• Advanced proficiency in TypeScript, Postgres, GraphQL, Restful and distributed backend system design
• Solid grasp of transaction processing and ledgering and asynchronous risk monitoring
• Experience building mission critical, API-first, services in a production environment for enterprise-scale customers
• Thrive in a dynamic, fast-paced environment
• Driven by the opportunity to make decentralized finance the backbone of fintech and to contribute meaningfully to its practical application in the real world

Haven’t quite met all the criteria? Let’s not miss out on the chance to speak. Whilst you might not meet every single requirement, you might bring other, more exciting skills to the companies!

Equal opportunity statement:

Avara celebrates diversity and view each and every team member as a separate individual with their own unique identity. No matter your race, religion, gender, ethnicity, age, (dis)ability, sexual orientation or even the wallet you use, we welcome you at Avara.

As an equal opportunities employer, we take accountability and believe in everyone’s potential to build, create and inspire changes. With a mission to build a diverse workforce, we are proud to foster a working environment in which everyone can feel safe and valued for who they are.

About Twinstake

Twinstake is a leading institutional staking provider which offers unrivalled knowledge and experience of the institutional market from on our founding heritage coupled with deep crypto expertise and technology from our team of core devs and industry veterans.

We stand out in:

• Compliance and Risk Mitigation
• Non-custodial Solution
• Enhanced Reporting and Data
• Optimised Performance
• Premier Service

About the role

We are seeking a proactive and skilled Senior QA Engineer to maintain and elevate the quality of our backend services, APIs, and frontend applications. This role is crucial in implementing Twinstake’s high standards for security, performance, and user experience, combining hands-on testing with strategic quality management. Key responsibilities include writing and maintaining robust test cases, leading QA for pre-release checks, building testing infrastructure for team-wide use, and providing first-line support for external quality issues reported.

What you’re good at:

• Implementing comprehensive test cases and scenarios that cover functional and non-functional aspects of the backend, API, and frontend services
• Performing detailed pre-release QA to identify defects and validate fixes
• Building and maintaining scalable testing frameworks and tools, including automation where applicable, that support the team’s ability to implement tests
• Developing test environments that are easily accessible and integrated into CI/CD pipelines for a smooth development workflow
• Serving as the primary point of contact for external quality issues, triaging, reproducing, and troubleshooting reported issues to resolution
• Working with the development and product teams to implement continuous improvements based on findings

What you bring:

• Proven experience as a Senior QA Engineer
• Experience in the crypto industry with an understanding of blockchain technologies, experience in staking mechanisms would be a plus
• Expertise with API testing tools (e.g., Postman, SoapUI) and frameworks (e.g., REST Assured, pytest), alongside familiarity with frontend testing tools (e.g., Selenium, Cypress)
• Proficient in scripting for test automation (e.g., Python, JavaScript) and knowledgeable in backend architecture for comprehensive API and database testing
• Experience with CI/CD pipeline integration and test automation within environments like GitHub Actions
• Demonstrated experience in designing and maintaining test automation frameworks that can scale. Ability to set up and document testing environments for easy adoption by the wider team
• Strong analytical skills with a systematic approach to identifying edge cases and building reliable test cases that ensure high-quality software releases
• Excellent problem-solving skills and the ability to work in a fast-paced, dynamic environment
• Strong communication skills and the ability to collaborate effectively with cross-functional teams

What makes you stand out:

• Strong background in setting up, managing, and optimizing metrics which later can be monitored using dashboards, visualizations and alerting tools (e.g. Grafana)
• Deep understanding and hands-on experience with AWS services, including but not limited to EC2, S3, RDS, Lambda, CloudWatch
• Interest in DevOps practices and experience with infrastructure as code (IaC) tools (e.g., AWS CDK, Terraform, Ansible)
• Contributions to open-source projects or active participation in the software development community
• Experience with containerization and orchestration technologies (e.g., Docker, Kubernetes)

What we offer:

• Exposure to innovative technologies in cryptocurrency and blockchain technology
• Great internal growth and development
• Competitive compensation, benefits, and perks
• Flexible hybrid working

About Twinstake

Twinstake is a leading institutional staking provider which offers unrivalled knowledge and experience of the institutional market from on our founding heritage coupled with deep crypto expertise and technology from our team of core devs and industry veterans.

We stand out in:

• Compliance and Risk Mitigation
• Non-custodial Solution
• Enhanced Reporting and Data
• Optimised Performance
• Premier Service

About the role

We are seeking a back-end software engineer for our platform team who is passionate about developing robust and scalable back-end systems. This role is pivotal in building and maintaining the technological backbone of our services, including API development, database management, and CI/CD processes. Your expertise will ensure our platform’s reliability, performance, and alignment with our compliance and risk mitigation strategies.

What you’re good at:

• Design and implement back-end services, including APIs, microservices, and database schemas, to support front-end applications and enhance user experience
• Lead the development and maintenance of CI/CD pipelines to streamline deployment and ensure high-quality code releases
• Manage database migrations and optimizations to ensure data integrity, performance, and scalability
• Collaborate with front-end developers and product managers to define and meet project requirements, creating a seamless workflow between back-end and front-end components
• Advocate for and implement best practices in back-end development, including code reviews, testing, and security measures
• Participate in the planning and execution of DevOps strategies, working towards improving infrastructure automation and monitoring
• Troubleshoot, debug, and upgrade existing systems, ensuring they meet the latest security and technology standards
• Stay abreast of emerging technologies and methodologies in back-end development, CI/CD, DevOps, and the crypto industry to continuously improve our platform

What you bring:

• Proven experience as a back-end developer, with a strong background in developing scalable and secure web applications
• Experience in the crypto industry with an understanding of blockchain technologies and ideally staking mechanisms
• Expertise in back-end languages and frameworks, Python preferred but will also consider other technologies (e.g. Java)
• Solid experience with database design, management, and migration strategies for relational (e.g., PostgreSQL, MySQL) and NoSQL databases (e.g., MongoDB, Cassandra)
• Deep understanding and hands-on experience with AWS services, including but not limited to EC2, S3, RDS, Lambda, CloudWatch
• Proficient in implementing CI/CD pipelines using tools like GitHub Actions
• A strong understanding of API development principles and experience building RESTful services
• Interest in DevOps practices and experience with infrastructure as code (IaC) tools (e.g., AWS CDK, Terraform, Ansible) is highly desirable
• Excellent problem-solving skills and the ability to work in a fast-paced, dynamic environment
• Strong communication skills and the ability to collaborate effectively with cross-functional teams

What makes you stand out:

• Contributions to open-source projects or active participation in the software development community
• Experience with containerization and orchestration technologies (e.g., Docker, Kubernetes)

What we offer:

• Exposure to innovative technologies in cryptocurrency and blockchain technology
• Great internal growth and development
• Competitive compensation, benefits, and perks
• Flexible hybrid working

About Twinstake

Twinstake is a leading institutional staking provider which offers unrivalled knowledge and experience of the institutional market from on our founding heritage coupled with deep crypto expertise and technology from our team of core devs and industry veterans.

We stand out in:

• Compliance and Risk Mitigation
• Non-custodial Solution
• Enhanced Reporting and Data
• Optimised Performance
• Premier Service

About the role

We are seeking a full stack software engineer for our platform team with proven experience in front-end development. This role is essential in creating and maintaining a seamless user experience, contributing to both the client-side and the server-side of our applications. Your expertise will be key in enhancing our platform’s visual appeal and usability, while your backend skills will support our overall system reliability and efficiency.

What you’re good at:

• Design and implement user-friendly front-end applications for both internal team use and external customer interaction.
• Design and implement back-end services, including APIs, micro-services, and database schemas, to support front-end applications and enhance user experience.
• Utilize modern front-end technologies and frameworks to create innovative staking solutions that align with our technical and business requirements.
• Advocate for best practices in front-end development, including code reviews, testing, and continuous integration.
• Stay up-to-date with emerging trends in front-end development, crypto technologies, and blockchain to continuously improve our offerings.

What you bring:

• Proven experience as a front-end developer or similar role, with a strong portfolio of developed applications.
• Expertise in front-end languages and frameworks (e.g., HTML, CSS, JavaScript, React, Vue.js) and working with APIs to serve data from the back-end
• Experience in building applications with a focus on user experience and performance.
• Proven experience in back-end languages and frameworks, Python preferred but will also consider other technologies (e.g. Java)
• Understanding of good software architecture (including cloud-native and serverless architectures).
• Interest in DevOps practices and experience with infrastructure as code (IaC) tools (e.g., AWS CDK, Terraform, Ansible).
• Experience in the crypto industry, with an understanding of blockchain technologies and staking mechanisms.
• Excellent problem-solving skills and the ability to work in a fast-paced, dynamic environment.
• Strong communication skills and the ability to collaborate effectively with cross-functional teams.

What makes you stand out:

• Contributions to open-source projects or active participation in the software development community
• Experience with containerization and orchestration technologies (e.g., Docker, Kubernetes)

What we offer:

• Exposure to innovative technologies in cryptocurrency and blockchain technology
• Great internal growth and development
• Competitive compensation, benefits, and perks
• Flexible hybrid working

Apply Now: