Kotlin Jobs in Web3

As stewards of the Polkadot and Substrate ecosystem, Parity is laying the foundation for a better web which 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.

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:

At Parity Technologies, we’re redefining the way the world interacts with Polkadot.. Our greenfield Mobile App team’s mission? To build the most seamless, secure, and cutting-edge digital wallet experience for both web and native platforms. If you’re a developer who thrives on innovation, enjoys pushing boundaries, and wants to shape the future of decentralized finance, read on:

About the position:

Picture this: You’re leading the charge in crafting a next-gen digital wallet—one that’s intuitive, secure, and lightning-fast. This isn’t just another app; it’s the gateway for users to interact with Polkadot and the decentralised world beyond.

• Architect & Build – You’ll design and develop a fluid, high-performance mobile and web wallet that empowers users to manage crypto assets effortlessly.

• Bridge Web2 and Web3 – Your work will ensure a seamless transition between traditional fintech experiences and decentralised technologies.

• Innovate & Optimise – Tackle challenges like gas fee optimisations, cross-chain transactions, and zero-trust security models.

• Create Beautiful UX – Work alongside designers to build smooth, intuitive interfaces that make crypto adoption easy for everyone.

• Stay Cutting-Edge – Implement the latest blockchain SDKs, cryptographic security measures, and real-time transaction tracking.

• Collaborate Globally – Work with engineers, product managers, and the wider blockchain community to push the limits of what’s possible.

About you:

You’ll be working with

• Frontend: React Native, TypeScript, React (for web wallet)

• Mobile: Swift (iOS), Kotlin (Android)

• Backend: Node.js, GraphQL, Firebase, Go (occasionally)

• Security: End-to-end encryption, Secure Enclave, biometric authentication

• DevOps: Docker, Kubernetes, CI/CD pipelines

Who You Are

• A mobile/web developer with a passion for Web3, DeFi, or crypto applications.

• Comfortable building for both native (iOS/Android) and web platforms

• Excited to solve complex problems in scalability, UX, and decentralised technologies.

Nice To Have

• Familiar with wallet security, cryptography, and blockchain interactions.

• Blockchain: Substrate, Polkadot.js, Ethereum Web3.js, Rust (for deeper blockchain integrations)

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, 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.