Senior Rust Engineer - DCN
Job Description
About Cryptio
Cryptio is the leading enterprise-grade financial data transformation and digital asset ERP platform for accounting, financial reporting, tokenization compliance, and loan management solutions. It is a complete back and middle-office platform that delivers financial integrity and accountability for businesses in crypto. Its platform allows users to transform on-chain and off-chain crypto activity into auditable records for accounting, treasury, tax filings, license applications, loans activity, and regulatory reporting.
Having recently announced our $45m series B, now couldn't be a better time to join!
The role
We're hiring a Senior Software Engineer to help build something brand new: Cryptio's Digital Assets Lending Marketplace.
This is 0-1. You'll be building a high stakes financial product from the ground up, the kind that handles real money, real loans, and real consequences. Think loan creation, repayments, margin calls, liquidations, collateral releases, and marketplace execution. Get it right and we change how institutional crypto lending works. Get it wrong and someone's missing money. So, you know, no pressure.
You'll work closely with Product, Engineering, Risk, Operations, Compliance, and Leadership to shape the foundations of a platform that institutional customers will trust with serious assets. Correctness, reliability, and operational safety are everything here.
If you've built complex production systems in financial services, trading, payments, custody, or settlement, and you love the idea of working on something where engineering quality genuinely matters, this is your kind of role.
Key technologies
Rust, modern backend systems, APIs, event-driven architectures, distributed systems.
What you'll do
Design and ship the core services behind our new Loan Marketplace
Build the workflows that power loan disbursements, repayments, margin calls, liquidations, and collateral releases
Plug into custodians, market data providers, and other financial infrastructure
Build guardrails that make unsafe states genuinely hard to reach (state machines, validation, audit trails, reconciliation)
Write tests that catch the scary stuff: integration, property based, simulations, fuzzing
Own systems end to end, from first sketch to running in production with proper observability and runbooks
Raise the bar through strong design, thoughtful code reviews, and mentoring other engineers
Partner with Product, Ops, and Compliance to make sure the product is safe to ship and operate
We're looking for someone who
Has 7+ years of software engineering experience, with strong backend or systems chops
Has built complex production systems with real business impact
Has worked on high stakes systems: financial, infrastructure, or anything mission critical
Deeply gets concurrency, race conditions, distributed systems, idempotency, ordering, and partial failure
Has a strong testing and correctness mindset
Can design safe state transitions, audit trails, and reconciliation flows
Owns technical design even when the product is messy and undefined
Has Rust experience, or strong evidence they can pick it up fast
Writes and talks clearly about complex trade offs
Mentors others and lifts the standard around them
Bonus points if you've worked on
Financial systems (trading, payments, settlement, custody, lending) and the concepts that come with them
Integrations with custodians, exchanges, banks, or market data providers
Production Rust, or advanced testing like simulations, fuzzing, or formal modelling
Crypto or enterprise financial software
Why you'll love this role
Build a brand new financial product from scratch, the kind that genuinely matters
Work on hard problems where engineering quality is the product
Help shape how institutional crypto lending actually works
Tackle technical challenges at the crossroads of crypto, fintech, lending, and enterprise software
Work alongside a senior team that cares about getting things right
Strong internal mobility and growth as we scale
Location
Must be based in or around London, or happy to come into our London office regularly.
Interview process
Talent Screen, 30 min
Hiring Manager Interview, 60 min
Technical Interview, 60 min
Product Engineering Interview, 45 min
Culture Interview, 45 min
The process usually takes 2-3 weeks.
Perks
👩💻 Remote or Hybrid working
🏝️ 25 days paid holiday plus bank holidays
🙌 One additional day of annual leave each year, up to 30 total days
🎂 Your birth off
🧘 Mental health resources, wellbeing programs, and professional coaching
🫶 Family-friendly policies
💪 Fitness and wellness budget
💻 MacBook Pro
🖥️ $200 home office setup budget
🎓Training and development budget
*** we have additional benefits depending on location
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.