Senior Rust Engineer

Key technologies

• Rust (with a focus on performance and scalability)
• TypeScript (key dependencies: Nest.js, Zod, Slonik)
• PostgreSQL, Cassandra, ClickHouse
• Kubernetes on AWS, Docker, GitLab, Pulumi

What you’ll do

• Lead the development of core systems for Cryptio's SaaS accounting platform, ensuring robust and scalable customer workflows
• Architect, optimise, and maintain data-heavy solutions for financial reporting, reconciliation, and ledger automation
• Collaborate with staff engineers, product, and other teams to deliver features aligned with customer and business needs
• Identify, troubleshoot, and proactively resolve performance issues at scale
• Mentor and support the growth of engineers across the squad
• Contribute to codebase reliability by documenting best practices and enabling knowledge sharing across the company

We’re looking for someone who

• Has experience building and shipping production software, ideally with team or technical leadership
• Is comfortable working with Rust and eager to deepen their expertise in it
• Has hands-on experience (or a strong interest in learning) TypeScript and frameworks like Nest.js, Zod, or Slonik
• Is curious about crypto and accounting, or brings relevant domain experience
• Enjoys working on high-performance systems and diving into technical challenges involving large datasets
• Has worked with (or is open to learning) OLAP databases such as ClickHouse, as well as PostgreSQL
• Communicates clearly in English and values working collaboratively with others
• Is interested in mentoring, sharing knowledge, and growing with the team
• Approaches problems analytically and is passionate about building future finance infrastructure in crypto

Why you’ll love this role

• Own the development of mission-critical infrastructure in a fast-evolving industry
• Collaborate with a team of highly skilled engineers and cross-functional partners
• Work with cutting-edge technologies in cloud-native, data-heavy environments (Rust, TypeScript, ClickHouse, AWS)
• Freedom to experiment and drive architecture decisions impacting the entire product
• 100% remote role, with opportunities to visit our hubs in Paris or London
• Competitive salary and full benefits package — see our careers page for details

Interview process

• Here’s what you can look forward to as we get to know each other:
• Talent Screen (15–30 min): We’ll start with a video call to discuss your application, the role, and answer your questions about Cryptio.
• Technical Interview (60 min): You’ll meet with a tech lead for a detailed technical discussion.
• Team Interview (45 min): Meet a product manager and an engineer to get to know your potential teammates.
• CTO Interview (45 min): Finish with a conversation with our CTO about your experience and fit for the role.

If this sounds like you, we would love to hear from you 🙌

At Cryptio, we move fast and take ownership of outcomes. We learn from failures, celebrate wins, and let humility, curiosity, and a passion for crypto guide how we work. If you value collaboration and want to build with purpose, you’ll feel right at home here.