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Senior Software Engineer

Job in Greater London, London, Greater London, EC1A, England, UK
Listing for: Thirdfort Limited
Full Time position
Listed on 2026-01-13
Job specializations:
  • Software Development
    Software Engineer, Senior Developer, Full Stack Developer, Backend Developer
Salary/Wage Range or Industry Benchmark: 25000 GBP Yearly GBP 25000.00 YEAR
Job Description & How to Apply Below
Location: Greater London

** Senior Software Engineer
** Full-time | Engineering | Remote
** Job Description
**** We’re on a mission to protect society from fraud and money laundering.
** We’ve already protected over 1.5 million people through life’s big transactions, with a core aim to protect 3 million people by the end of 2024.
Fraud and regulation are rising, costing the UK economy over £100bn every year; this makes it more difficult for businesses to protect themselves and their clients - individuals like you and me - from fraud and money laundering.
Our co-founders Olly and Jack were led to this area when a friend was defrauded of £25K when buying their first property. At the time, anti-fraud technology didn’t exist, which meant that completing the anti-fraud checks required in these processes was largely manual. These big life moments should be exciting, but instead are often confusing and scary due to the painful process of completing these paper-based checks and the risk of fraud.
Thirdfort helps businesses to facilitate these anti fraud checks so that individuals know they can transact safely and seamlessly with professionals during these big transactions. Our anti-fraud platform provides a secure way for professionals in regulated sectors like Lawyers, Estate Agents and Accountants to transfer funds and verify sensitive information through app based document checks, facial recognition and open banking.
Over 1,300 businesses now trust Thirdfort to verify their clients. We are FCA regulated and have raised over $33m in capital from leading Fintech investors Breega and Element Ventures, as well as the founders of Zoopla, Funding Circle, Comply Advantage, Tessian, Fenergo and Fidel.

** Engineering at Thirdfort
** At Thirdfort, we’re working to build an outstanding engineering culture that empowers our team to do their best work. We have a culture which cultivates an honest and open environment, where everyone’s opinions are heard and valued.
We are looking for a Senior Software Engineer to join our Identity team within the Engineering function and contribute to the building out of our new Know-Your-Customer/Know-Your-Business platform used by our B2C and B2B clients, as well as represent frontend engineering across the function. The platform is cloud hosted with a JSON REST API backend (primarily Node.js and GO), microservices architecture and cryptographically secure sensitive data storage.
Our Product and Tech teams are remote first and so this individual can be based anywhere in the UK. This does not mean though that our remote first team aren’t welcome in our offices as we value the times when we can come together in person. Ultimately we trust our team to work in the way that suits them best. Please note we're unfortunately unable to visa sponsor for this role.

** As a Senior Software Engineer, you will:**- Support building KYB & KYC APIs that are used by our B2B clients and written in Go.

- Mentor and elevate other engineers, as well as championing the Identity team across the engineering function and liaising with the wider organisation including Product, Design and Client Support to aid development of our product.

- Factor in security and privacy when crafting solutions and reviewing other engineers’ Pull Requests
- Pragmatically suggest and implement solutions to immediate problems but consider the long-term implications of decisions with a view to ensure there is manageable amount and complexity of technical debt.

- Role-model quality and encourage the rest of the department to embody this.
** We’re looking for someone who:**- Has significant experience building responsive, performant backend apps with modern frameworks
- Has experience with / understands the core concepts of:

- Cloud-based applications
- Modern Backend Languages (Experience with Go or strong desire to learn are a must)- Modern CI/CD pipelines
- Relational and non-relational databases
- Has enabled and maintained 3rd party API integrations
- Can independently & collaboratively craft testable solutions for backend features
- Has experience working with both greenfield and legacy projects, identifying bottlenecks and suggesting improvements
- Has worked…
Position Requirements
10+ Years work experience
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