Cosmos Hub Core Developer

Informal is a core contributor to Cosmos, where we develop interoperable blockchain systems by heavily relying on formal verification tools and techniques.

The Cosmos technology stack, including Tendermint Core, the Cosmos-SDK, IBC, and the Cosmos Proof of Stake modules, is an industry leading Go toolkit for building, deploying, and running blockchains. This technology is used today to secure many billions of dollars in cryptocurrency market capitalization.

One such blockchain is known as the Cosmos Hub, with its native ATOM token. Launched in 2019, the Cosmos Hub was one of the first production Proof-of-Stake blockchains, and today has one of the largest and most decentralized validator sets in the blockchain ecosystem. It is central to the Cosmos community as the blockchain focused primarily on providing a high security environment for connecting into the emerging Internet of Blockchains - the interchain.

The goal of the Cosmos Hub is to provide a high security base-layer environment to service the needs of the many dozens (and eventually hundreds and thousands) of IBC enabled blockchains by providing interoperability services. The Hub will make it easy to launch new chains, to connect with many chains from a single integration point, to simplify access to diverse interchain services like liquidity and other DeFi applications, and more. For more on the vision of the Cosmos Hub, see the blog post, The Cosmos Hub is a Port City. You will help us build out these features.

What your responsibilities will be:

• Design new cryptoeconomic protocols to support interoperability in the emerging Internet of Blockchains


• Develop key components of the Cosmos Hub, including the Proof of Stake System, IBC, Shared Security, and more.


• Improve the user experience, correctness, code-quality, and performance of the software.


• Contribute clean, well tested, and well documented code.


• Review issues and pull requests and provide valuable feedback to contributors.


• Mentor other engineers and support the growth and health of the team.


• Guard the quality of the software from technical debt, missing tests or documentation, and feature creep.


• Nurture a safe and enjoyable open source experience for contributors.

What we look for in a Cosmos Hub Core Developer:

• At least 3 years developing, releasing, and maintaining production software.


• Significant experience writing Go or the ability and desire to become proficient in new languages.


• A track record of developing complex state machines.


• Experience with cryptocurrencies, Proof-of-Stake, and blockchain interoperability is highly beneficial.


• Commitment to product quality, user experience, and well-structured code.


• Experience with open source projects and communities.


• The ability to take ownership and see initiatives through.


• Excellent interpersonal skills, experience working with distributed teams, and enjoys working with and mentoring others.

About Informal

Informal is a remote-first company with offices in Toronto, Lausanne, Vienna and Berlin. We are structured like a worker’s cooperative, where important corporate actions are subject to one-person-one-vote democratic control by the member-employees. We envision a sustainable future of cooperatively owned and governed, open-source, distributed organizations running on reliable distributed systems and are excited to grow the team with amazing individuals who believe in making this future a reality. Some of our benefits include:

• A unique, caring and friendly culture (learn more about how we work here)


• Be part of an exciting new type of organization built on Cooperative principles (learn more here)


• 25 working days of paid vacation annually, plus unlimited Sick leave and 3 Spiritual days


• Company-wide closure from December 25th to January 1, annually


• Annual Lifestyle benefits (reimbursements for gym memberships, fitness equipment, yoga classes, etc.)


• Annual travel budget for educational and career-advancement opportunities


• A remote-first, flexible work environment with global Hub offices to visit


• A home-office stipend to set you up for success


• Annual company retreats


• Paid parental leave


• …and many more!

We are an equal opportunity employer and value diversity in our organization. We are committed to equal employment opportunities and encourage applications from people of all race, religion, colour, national origin, gender identity, sexual orientation, age, marital status, veteran status, or disability status.