Blockchain Privacy Engineer

Informal Systems is a remote-first company with a presence in Canada, US, Austria, Switzerland, Germany and more! We are structured as 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.

About Collaborative Finance (CoFi)

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We are leveraging the state-of-the-art tooling provided by Cosmos to build out our vision of Collaborative Finance  (CoFi) - a sophisticated approach to money that looks at the real economy, the way payments flow, and uncovers the closed loops. It takes advantage of existing patterns in credit networks to save liquidity and optimally inject it. CoFi reimagines the financial system to make the small business economy prosper sustainably. We focus on mapping the payments graph, finding cycles, clearing them, and encouraging their sustainable growth. CoFi unlocks powerful clearing technology for SMEs that were once only accessible to the banks. For more on CoFi, see the website .

About the Role

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Our CoFi team consists of world leaders in liquidity-saving payment solutions for real businesses and the underlying science that makes this liquidity-saving possible. We are looking for a cryptography engineer to work closely with the team on the design and development of privacy-preserving collaborative finance protocols and core blockchain software.

What your primary responsibilities will be:

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• Design, evaluate and implement cryptographic protocols for privacy-preserving and scalable blockchain applications. 
• Prototype and evaluate existing privacy protocols using ZK proof systems (Groth '16, PLONK, etc.).
• Evaluate privacy-preserving graph algorithms in terms of performance and security.
• Maintain cyber security best practices across the entire blockchain technology by applying cryptographic methods and primitives.
• Develop, test, and manage blockchain networks with an emphasis on ensuring efficiency, distributed computing, consensus protocols, and cryptography.
• Write specifications and design documentation.
• Perform ongoing security analyses, debug circuits as required.

What we look for in a successful Cryptography Engineer:

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• Experience implementing cryptographic protocols (ideally using zkSNARKs, secure MPC or FHE).
• Experience designing and implementing privacy-preserving blockchain protocols.
• Experience implementing core blockchain software.
• Experience with systems and async programming in Rust.
• Understanding of network flows and graph algorithms.
• A strategic problem solver and self-starter
• Good communication and support skills for triaging and resolving issues.

Our benefits include:

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• 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