Senior Rust Engineer (Reconciliation Team)

About Cryptio

Cryptio is building the data infrastructure for the crypto economy. Our enterprise-grade back-office platform helps businesses and institutions automate financial reporting and compliance for digital assets—so they can navigate the crypto space with confidence. Backed by top investors like Point Nine, 1kx, and BlueYard, we’ve raised $26M and work with industry leaders like Circle, Uniswap, and even the Government of El Salvador. Currently, we are a team of 80 amazing people. Crypto needs better infrastructure to go mainstream—and we’re here to build it!

Location

At Cryptio, we’re a remote-first team, with most working 100% remotely, while others enjoy a mix of office time in our hubs in London or Paris. This role requires candidates to be based in the UK or France, and we support the setup that works best for your lifestyle and productivity—whether that’s fully remote, in the office, or a blend of both!

The Team

We're looking for a Senior Software Engineer to join our small Data & Reconciliation API squad. 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.

Team Stack

• Languages: Rust

• Databases: Clickhouse, RocksDB, Cassandra, PostgreSQL

• Infrastructure: Kubernetes, AWS, Pulumi, Docker, GitLab

What’s special about this role?

This is a rare opportunity to work at the intersection of blockchain technology, high-performance systems engineering, and enterprise-grade financial solutions. Join our team to build vital blockchain reconciliation tools, helping innovative companies bridge the gap between cutting-edge decentralized technology and their financial systems. This role offers a chance to directly impact how our clients manage crucial data, within a dynamic, collaborative, and forward-thinking environment. You'll be more than just a developer; you'll be shaping the future of crypto data management.

What you'll be doing

• 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, optimising reconciliation workflows for speed and accuracy

• Monitor and troubleshoot user issues, proactively implementing improvements

We're looking for someone who has

• 5+ years of software engineering experience delivering high-impact solutions in a fast-paced environment.

• Deep proficiency in Rust (writing and deploying production-grade code) and PostgreSQL (designing and implementing efficient, high-performing queries).

• Proven experience working with data-heavy products and optimising system performance.

• Excellent collaboration and stakeholder management abilities, with a track record of building strong relationships with technical and non-technical audiences.

• An analytical mindset, a passion for solving complex problems, and a strong interest in the crypto and fintech industry.

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

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