At a Glance
- Tasks: Lead a dynamic engineering squad to revolutionise financial technology and drive commercial delivery.
- Company: Join Flagstone, an innovative online savings platform with a collaborative culture.
- Benefits: Enjoy hybrid working, competitive bonuses, personal development budget, and comprehensive health care.
- Other info: Embrace a diverse and inclusive community where your voice is valued.
- Why this job: Make a real impact in fintech while developing your skills in a supportive environment.
- Qualifications: Strong C#/.NET experience and a passion for coaching and developing engineers.
The predicted salary is between 66150 - 80850 £ per year.
Flagstone is an online savings platform, reinventing how individuals, businesses, and charities manage, protect, and grow their cash. A diverse group of people, bound by a collaborative spirit, and shared purpose. Our unique culture is our pride and joy and our competitive advantage.
To revolutionise the savings market, we need to be at our best. High performance takes more than talent – it takes a culture of kindness, respect, and growth. We’re building a diverse, inclusive community, where your voice is heard and valued. With close support and room to develop, you can surpass even your own expectations.
You're a hands-on Engineering Lead, ideally with around 10 years' experience, ready to run a squad with real autonomy. You'll lead the Banks squad on the Bank Portal, the partner-facing application our banking partners use to view and act on their Flagstone relationship. By the time you start, the squad will have delivered the foundational rebuild, and you'll pick up the next phase: building the commercial capability on top of that foundation.
This is a full-stack squad (.NET backend, React/TypeScript frontend) working in a regulated, data-sensitive environment, so the role carries real weight: partner-facing delivery, strict data isolation between banks, and the judgement calls that come with both.
What you’ll do:
- Own the squad's technical direction and quarterly roadmap, driving the commercial features that build on the migrated foundation while keeping the newly-migrated platform stable.
- Run day-to-day delivery and performance management, handling underperformance and any exits directly.
- Work as a peer across the tribe, contributing to engineering-wide standards and representing the squad's constraints and progress in tribe-level planning.
What you’ll bring:
- Strong commercial C#/.NET experience, with a solid grasp of SOLID, event-driven architecture and DDD.
- RESTful API design and SQL skills.
- Cloud-native Azure development.
- Frontend fluency to review React/TypeScript work.
- TDD in practice (NUnit, MSTest, Playwright/Selenium or similar).
- Experience with agentic development tools (Claude Code or similar).
- Comfort working in a regulated or data-sensitive environment.
- Ability to assess and weigh risk, making sound, defensible decisions.
On the people side:
- A track record of direct, fair performance management.
- Confident stakeholder management, translating technical trade-offs for non-technical audiences.
- Genuine enthusiasm for coaching and developing engineers.
- Proactive, collaborative problem-solving.
How we reward you:
- Hybrid working - Spend at least 1 day a week with your team in our collaborative London office.
- Competitive bonus scheme designed to reward and recognise high performance.
- Flexible benefits budget for meaningful benefits.
- A range of salary sacrifice options for tax-efficient savings.
- Around the World scheme - 3 months work from anywhere scheme.
- Mental wellbeing support – Access therapy and mental health sessions.
- Learning and development – £1,000 personal development budget.
- Private health care - Enjoy all the benefits AXA has to offer.
- Medical cash plan for dental and optical expenses.
- Life insurance and Income Protection - four times your annual salary.
- Matched pension contributions up to 5%.
- 25 days holiday - plus bank holidays, well-being days and volunteering days.
- Enhanced Parental Leave – enhanced maternity, paternity and adoption pay.
At Flagstone, we’re assembling a diverse team that defies our industry’s norms. We encourage you to apply, no matter your background.
Engineering Team Lead - 12 month FTC in London employer: Flagstone
Flagstone is an exceptional employer that prioritises the growth and development of its employees, offering a competitive bonus scheme and flexible benefits tailored to individual needs. With a strong focus on building trust and relationships within the financial services market, our work culture fosters collaboration and innovation, making it an ideal environment for those looking to make a meaningful impact in the Greater London area.
StudySmarter Expert Advice🤫
We think this is how you could land Engineering Team Lead - 12 month FTC in London
✨Get Involved in Open-Source Projects
Diving into open-source projects is a brilliant way to showcase your skills and connect with other developers in the community. Not only will you beef up your GitHub profile but you might also catch the eye of someone at Flagstone who values hands-on experience over just theory.
✨Attend Local Tech Meetups
Tech meetups are gold mines for networking and discovering job opportunities, especially in the fast-paced world of software engineering. Check out local listings for events in your area and don’t shy away from introducing yourself. This could lead directly to a temporary position at Flagstone!
✨Showcase Your Work Online
With temporary roles, it’s all about standing out in a short space of time. Create a portfolio website where you highlight your projects and skills. Talk about your code, and provide links to your GitHub repositories. This will not only demonstrate your abilities but will also make it easier for recruiters at Flagstone to see what you bring to the table.
✨Leverage Temporary Job Boards
Don’t forget to check specialised job boards for temporary software development roles. Websites like We Work Remotely or Remote OK often list short-term gigs that can be a perfect fit. Apply directly through our website as well, making sure your application is sharp—temporary roles can move fast!
We think you need these skills to ace Engineering Team Lead - 12 month FTC in London
Some tips for your application 🫡
Show Off Your Tech Skills:Make sure your CV highlights your tech stack and any programming languages you’re proficient in. Include specifics about any frameworks or technologies you’ve worked with; they can make you stand out in the sea of applicants. It’s all about showing that you have the chops we need at Flagstone!
Portfolio 2.0:Since you’re applying for a temporary gig, it’s super important to showcase a portfolio that highlights your best projects. Include links to GitHub or any personal projects that demonstrate what you can do in a real-world environment. This gives us a taste of your style and your problem-solving approach!
Keep It Brief and Relevant:With a temporary position, we want to see your ability to hit the ground running. Be concise in your CV and cover letter; stick to experiences that directly relate to the role. Highlight any previous temporary roles or freelance gigs that show your adaptability and quick learning!
Tailor Your Cover Letter:Don’t just send a generic cover letter. Personalise it for Engineering Team Lead - 12 month FTC at Flagstone! Mention why this temporary role excites you and how you see yourself contributing in the short run. Show us what you've got and why you're the one for this quick turn-around!
How to prepare for a job interview at Flagstone
✨Nail the Technical Skills
For a software engineering role, you'll likely face technical questions or coding tasks during your interview. Brush up on the relevant programming languages and frameworks that Flagstone uses, and don’t forget to practice some coding challenges on platforms like LeetCode or HackerRank. Showing your coding prowess can really make you stand out!
✨Prepare for System Design Questions
Even for a temporary role, having a grasp of system design principles can be crucial. Be ready to discuss how you would architect a software solution, including discussing trade-offs, scalability, and performance considerations. Having examples from previous projects can really show off your analytical thinking.
✨Demonstrate Your Adaptability
Since this is a temporary role, you'll want to emphasise your ability to hit the ground running. Highlight experiences where you quickly adapted to new technologies or teams. Let’s make it clear to the interviewers at Flagstone that you can learn on the job and deliver results in a short timeframe!
✨Show Off Your Portfolio
Make sure to have a portfolio or GitHub ready showcasing your projects. Having tangible evidence of what you've done—be it personal projects, contributions to open-source, or previous work—can convey how capable you are. Tailor this for what might interest Flagstone, so it's relevant and sparks conversation during your interview.
