Senior Software Engineer / Reconciliation API / Rust / Remote UK or France

Cryptio is looking for a senior software engineer interested in working on crypto, finance, accounting, and reconciliation-related products. You will join a team of talented engineers working on Cryptio’s Data & Reconciliation API. This API-only product is central to our mission of enabling large-scale users to reconcile our proprietary on-chain datasets with their internal data seamlessly. You’ll play a key role in designing, building, and maintaining a high-performance, scalable system that ensures accuracy, speed, and reliability for enterprise-level use cases.

Key technologies: Rust, PostgreSQL, Kubernetes on AWS, Docker, GitLab (modern development stack)

What’s special about this role? This role is a rare opportunity to work at the intersection of blockchain technology, high-performance systems engineering, and enterprise-grade financial solutions. You’ll contribute to a product that plays a mission-critical role for our clients, helping them reconcile vast amounts of blockchain data with their internal records. This isn’t just about building an API; it’s about creating a robust, scalable solution that bridges the gap between cutting-edge decentralized technologies and the structured needs of enterprise financial operations. The work you do will have a direct impact on how some of the world’s most innovative companies manage their blockchain data and offer cutting-edge financial services to their users. Beyond the technical challenges, you’ll also be part of a dynamic, forward-thinking team that values collaboration, continuous learning, and pushing the boundaries of what’s possible in fintech. At Cryptio, you won’t just develop software; you’ll help define the future of reconciliation and data management in the crypto space.

Responsibilities:

• Contribute to the design, development, and maintenance of the Data & Reconciliation API
• Write and ship production-grade Rust code
• Document and test your code
• Work closely with product teams to ensure new features meet user needs
• Work with large-scale data pipelines, optimizing reconciliation workflows for speed and accuracy
• Monitor and troubleshoot user issues, proactively implementing improvements

Requirements:

• 5+ years of experience in software engineering
• Proficient in Rust, ability to write and ship production-grade code
• Proficient with PostgreSQL, ability to design database schemas and write complex queries
• Some experience working with data-heavy products
• Some experience optimizing systems: caching, indexing, query optimization, profiling
• Impeccable spoken and written English
• Exceptional communication skills, with both technical and non-technical stakeholders
• Thriving when working with others; collaboration is paramount for this role
• An analytical mindset, a passion for solving complex problems, and an interest in the crypto and fintech industry

Location: You can work from home 100% of the time, but you should be able to easily join one of our hubs from time to time. Our hubs are Paris, London, and New York.

Interview Process:

• Talent Screen - 45 min
• Technical Interview - 90 min
• Team Interview - 45 min
• Leadership Interview - 45 min

Benefits:

• Fully-Remote / Hybrid – The choice is yours!
• 25 Days Paid Holiday + Bank Holidays + Your Birthday Off
• Earn an extra day of annual leave for every year you’re at Cryptio.
• Attractive Maternity and Paternity Policies for your growing family.
• Gym Classes or Spa Treatments with ClassPass (or gym reimbursements).
• Apple MacBook Pro – The best tech at your fingertips!
• $200 Workplace Budget to create your perfect home office!
• Training and Development Budget – Invest in yourself and grow!

*UK has these additional benefits: 4% Pension Contributions towards your future + Private Medical & Dental Insurance with Allianz.

*France has these additional benefits: English language course options.