At a Glance
- Tasks: Design and build secure systems to protect users from fraud.
- Company: Join Thirdfort, a mission-driven tech company fighting fraud.
- Benefits: Competitive salary, flexible hours, uncapped leave, and personal development budget.
- Other info: Remote-first culture with a focus on collaboration and inclusivity.
- Why this job: Make a real impact in protecting millions from fraud while growing your skills.
- Qualifications: Experience in software development and strong problem-solving skills required.
The predicted salary is between 60000 - 84000 £ per year.
Join to apply for the Senior Software Engineer role at Thirdfort. We’re on a mission to protect society from fraud and money laundering. We’ve already protected over 3 million people through life’s big transactions. 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 motivated by a client’s defrauding of £25K when buying their first property, highlighting the lack of adequate anti‑fraud technology. At Thirdfort, we help businesses facilitate anti‑fraud checks so that individuals can transact safely and seamlessly with professionals such as lawyers, estate agents and accountants. Our platform offers secure, app‑based document checks, facial recognition and open banking, and over 1,500 businesses now trust us.
About the Role: We’re looking for a Senior Software Engineer to join a cross‑functional product team and help build reliable, scalable systems that protect our customers and their clients from fraud. This is a great opportunity for an engineer who enjoys owning problems end‑to‑end, working closely with Product and Design, and growing their technical depth and impact.
About the Team: Our engineering teams are remote‑first, mixed‑discipline product teams comprising backend, frontend and mobile engineers, working closely with Product Managers, Designers and other stakeholders. We focus on delivering value in small, iterative increments, balancing speed with quality and long‑term maintainability.
As a Senior Software Engineer, you will:
- Design, build and ship well‑tested features across our platform with support from more senior engineers.
- Take ownership of user stories from refinement through to production and post‑release support.
- Collaborate closely with Product and Design to understand problems and translate requirements into pragmatic technical solutions.
- Write clean, maintainable code and contribute to improving code quality through reviews and refactoring.
- Participate in incident investigation and support, helping to improve system reliability and observability over time.
- Continuously develop your technical skills and broaden your understanding of the wider system.
- Contribute positively to our engineering culture by sharing knowledge, asking questions and supporting your teammates.
We’d love to hear from you if:
- You have experience building and shipping production software as part of a team.
- You’re comfortable working with at least one modern backend or frontend language (e.g., Go, TypeScript, JavaScript, Python).
- You understand core engineering fundamentals such as APIs, data modelling, testing and version control.
- You enjoy solving problems end‑to‑end and taking responsibility for your work.
- You can communicate clearly with both technical and non‑technical stakeholders.
- You’re happy working in a fast‑moving environment where requirements may evolve as we learn more.
We use and teach:
- Go for backend services
- TypeScript and React for web applications
- React Native for mobile applications
- Temporal for workflow orchestration
- PostgreSQL for relational data
- GCP for infrastructure, monitoring and analytics
Life at Thirdfort: Our culture promotes collaboration and open communication, giving Team members ownership, impact and empowerment. We recognise that a one‑size‑fits‑all approach rarely works and aim to provide flexible work arrangements and support for individual needs.
Our Benefits: Security‑first focus, extending to physical, mental and financial security. When you join Thirdfort, you’ll get immediate access to our flexible employee benefits package that aims to support you across these areas:
- Compensation – £70k‑£100k p.a. base salary
- Flexible working hours
- Enhanced parental leave
- Work‑from‑home allowance
- Uncapped annual leave
- Enhanced sick leave
- Private healthcare with AXA
- Regular company and team socials
- Uncapped budget for personal development
- Share options for all UK employees
- Customisable wellness budget and discounts via partner
Adjustments & Diversity: We’re committed to building an inclusive, equitable and diverse culture where everyone has a chance to make a difference. If you require any reasonable adjustments during the application or interview process, please let your Talent Manager know and we’ll do our best to accommodate.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analysing resumes or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
Senior Software Engineer employer: Thirdfort
At Thirdfort, we pride ourselves on being an exceptional employer that fosters a collaborative and innovative work culture. As a GTM Automation Engineer, you'll have the opportunity to work at the forefront of technology in a vibrant environment, with access to continuous learning and professional development. Our commitment to employee growth, coupled with the chance to make a significant impact on our commercial operations, makes Thirdfort a rewarding place to advance your career.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Engineer
✨Tip Number 1
Network like a pro! Reach out to current employees at Thirdfort on LinkedIn or other platforms. Ask them about their experiences and any tips they might have for the interview process. Personal connections can give you an edge!
✨Tip Number 2
Prepare for technical interviews by brushing up on your coding skills. Use platforms like LeetCode or HackerRank to practice common algorithms and data structures. Being sharp on these will help you shine during the technical assessments.
✨Tip Number 3
Showcase your problem-solving skills! During interviews, be ready to discuss past projects where you tackled challenges head-on. Highlight how you collaborated with teams and contributed to successful outcomes—this is key for a Senior Software Engineer role.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in joining the Thirdfort team. Let’s get you that job!
We think you need these skills to ace Senior Software Engineer
Some tips for your application 🫡
Tailor Your CV:Make sure your CV is tailored to the Senior Software Engineer role. Highlight relevant experience and skills that align with our mission at Thirdfort, especially in building reliable and scalable systems.
Craft a Compelling Cover Letter:Your cover letter should tell us why you're passionate about fighting fraud and how your background makes you a great fit for our team. Share specific examples of your work that demonstrate your problem-solving skills.
Showcase Your Technical Skills:Don’t forget to mention the programming languages and technologies you’re comfortable with. We love seeing candidates who can communicate their technical expertise clearly, so be specific about your experience with Go, TypeScript, or any other relevant tech.
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it shows us you’re keen on joining our mission!
How to prepare for a job interview at Thirdfort
✨Know Your Tech Stack
Familiarise yourself with the technologies mentioned in the job description, like Go, TypeScript, and PostgreSQL. Be ready to discuss your experience with these languages and how you've used them in past projects.
✨Showcase Problem-Solving Skills
Prepare examples of how you've tackled complex problems end-to-end. Highlight specific challenges you faced, the solutions you implemented, and the impact they had on your team or project.
✨Communicate Clearly
Practice explaining technical concepts in simple terms. You'll need to communicate effectively with both technical and non-technical stakeholders, so being able to break down your thought process is key.
✨Emphasise Collaboration
Since the role involves working closely with Product and Design teams, be prepared to discuss how you've collaborated in the past. Share examples of how you contributed to a positive team culture and supported your teammates.
