Tembo is making the dream of ownership possible for a new generation of home buyers. We are a disruptive, award winning mortgage broker powered by a proprietary technology platform which aggregates every mainstream and niche lender in the UK - with the result often getting the buyer years ahead of the alternative.
We recently acquired savings company Nude Finance – now Tembo Lifetime ISA – to help us capture customers earlier in their home buying journey, nurture them through saving for a deposit and ultimately to match them with the best mortgage product to get them onto the ladder more quickly.
Find a way - representing our desire to innovate and also leave no stone unturned to help find a customer a way to get on the ladder
If you don’t like it change it - as a startup we’re constantly listening to every source of data and evolving, every opinion counts
We are well funded by Goodwater Capital, Aviva, McPike Family Global Office, Ascension, Love Ventures as well as a suite of ethical backers such as Fair by Design, Barrow Cadbury, Joseph Rowntree Foundation and Big Society Capital.
You can read more about us and our mission on our website:
Tembo is on the lookout for a passionate Senior Ruby Engineer to join the savings team. We recently launched a Cash ISA proposition to the market, powered by our proprietary savings technology and things have taken off in a big way. Service Creation: Design and develop resilient, scalable backend services in Ruby that power critical real-money systems, ensuring reliability and consistency in high-stakes environments.
Feature Development: Lead and contribute to the full lifecycle of product features—from ideation to deployment and maintenance—with a strong emphasis on data accuracy, security, and transactional integrity.
Continuously monitor and improve system performance, scalability, and reliability. Take ownership of system uptime and proactively mitigate bottlenecks or failures in cash reconciliation flows.
Implement effective monitoring and alerting to catch anomalies before they impact users.
Champion clean, maintainable, and well-tested Ruby code. Conduct detailed code reviews, mentor junior engineers, and foster a strong engineering culture built on quality and accountability.
Technical Investigations: Lead technical deep-dives and spike solutions to evaluate technologies, libraries, and approaches for improving system reliability, auditing, and financial reconciliation accuracy.
At least 5 years of professional experience in software development, with a strong focus on Ruby on Rails
Experience of ledgers, holdings, valuations is highly desirable
Excellent communication and collaboration skills, capable of working effectively in remote, cross-functional teams.
We punch above our weight, move quickly and ship often. If you thrive in a startup and want to help get us to scale-up
We offer a supportive, remote-first work environment where innovation and initiative are celebrated.
We’ve just relaunched our benefits package which includes enhanced parental benefits, health insurance, a day off for your birthday, an abroad away day (Mallorca here we come) to name just a few.
We are committed to diversity and inclusion, providing equal opportunities for all team members. Join us in our mission to deliver exceptional digital experiences and make a real difference in the technology landscape.