At a Glance
- Tasks: Build and own backend services, taking features from idea to production with autonomy.
- Company: Exciting Series A fintech startup with a proven track record and major bank partnerships.
- Benefits: Competitive salary, equity options, private health cover, and generous holiday allowance.
- Other info: Hybrid work model with team lunches and rapid expansion into the US market.
- Why this job: Join a small team, work directly with founders, and make a real impact on innovative tech.
- Qualifications: 3+ years of backend engineering experience and a passion for ownership and problem-solving.
The predicted salary is between 90000 - 115000 £ per year.
Software Engineers (Mid & Senior Level) £70,000 - £115,000 + shares (DoE) London / hybrid - 3 days per week in the office Fintech - Series A funded. This is a rare opportunity. Early-stage enough to have real impact. Late enough to have real traction. The window where joining actually makes a difference.
Company: A Series A fintech backed by second-time founders who've previously raised and sold. They're building technology that sits inside critical financial infrastructure - already trusted by major Tier 1 banks, with US expansion underway.
The Role: This is a backend-heavy engineering role for someone who thinks like a product owner, not just an executor. You'll work across the stack and take real ownership end-to-end, from idea to production.
- Build and own backend services across the core platform
- Work across frontend and infrastructure when needed - polyglot mindset valued
- Take features from requirements through to production with real autonomy
- Push back on requirements, think about the customer, and understand the bigger picture
- Contribute to architecture decisions as the team and platform scale
Stack: Java, GoLang, Python - React, TypeScript, Next.js - Terraform, GCP, GitHub Actions. AI? YES - They're shipping LLM-powered products. Exact tech match less important than strong backend fundamentals and a polyglot mindset.
You'll be a good fit if you...
- Have 3+ years of backend engineering experience
- Have worked at a startup or owned something from zero to production
- Are intellectually curious - you ask questions, dig into problems, and care about the why
- Want autonomy and responsibility, not just tickets
Why join?
- Real ownership: Small team, big responsibility. You'll work directly with the founders and have genuine influence over what gets built and how.
- Exceptional founders: Second-time founders with a proven track record. They've done this before and know how to build a company that lasts.
- Equity that could matter: Strong equity options from day one.
- Expanding fast: Already live with major UK banks, US expansion underway. This is a business with real momentum.
- Working with AI & latest tech: They're actively shipping LLM-powered features into production - and there's real appetite to go further.
The Package: ~ Mid-level: £70k–£90k | Senior: £90k–£115k base (DoE)~ Share options ~ Bupa private health cover ~25 days holiday + pension ~ Farringdon, London - hybrid, 3 days per week in the office (team lunches on Fridays!)
Interview Process:
- Intro call with a founder or senior team member
- Tech test and technical interview
- Onsite - meet the team and learn more about the role
Senior Software Engineer (C# / SQL Server) in London employer: Plan:it
Join a dynamic Series A fintech company in Farringdon, London, where you'll have the opportunity to make a significant impact in a small team with big responsibilities. With exceptional founders at the helm, you'll benefit from strong equity options, a culture of autonomy, and the chance to work with cutting-edge technology, including AI-powered features. Enjoy a hybrid work model that promotes collaboration and team bonding through regular lunches, all while contributing to a rapidly expanding business trusted by major banks.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Engineer (C# / SQL Server) in London
✨Tip Number 1
Network like a pro! Reach out to your connections in the fintech space or even those who work at the company you're eyeing. A friendly chat can sometimes lead to a referral, which is golden when it comes to landing that interview.
✨Tip Number 2
Prepare for the tech test! Brush up on your backend fundamentals and be ready to showcase your problem-solving skills. We recommend doing some mock tests or coding challenges to get into the groove.
✨Tip Number 3
Show your passion for ownership! During interviews, share examples of how you've taken projects from zero to production. Highlight your curiosity and how you think about the bigger picture – they want someone who cares about the 'why' behind their work.
✨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, we love seeing candidates who take that extra step to connect with us directly.
We think you need these skills to ace Senior Software Engineer (C# / SQL Server) in London
Some tips for your application 🫡
Show Your Passion for Tech:When you're writing your application, let your enthusiasm for technology shine through! We want to see that you’re not just ticking boxes but genuinely excited about building impactful solutions in the fintech space.
Tailor Your Experience:Make sure to highlight your backend engineering experience and any ownership you've had in previous roles. We love seeing how you've taken projects from zero to production, so don’t hold back on those details!
Think Like a Product Owner:In your application, demonstrate your ability to think beyond just executing tasks. Show us how you’ve contributed to architecture decisions and pushed back on requirements to focus on customer needs. We value that big-picture thinking!
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to get your application and ensures you don’t miss out on this rare opportunity to join our growing team!
How to prepare for a job interview at Plan:it
✨Know Your Tech Stack
Make sure you’re well-versed in C#, SQL Server, and any other technologies mentioned in the job description. Brush up on your backend fundamentals and be ready to discuss how you've used these technologies in past projects.
✨Show Your Ownership Mindset
This role values autonomy and responsibility, so come prepared with examples of how you've taken ownership of projects from start to finish. Be ready to discuss challenges you faced and how you overcame them, showcasing your problem-solving skills.
✨Think Like a Product Owner
During the interview, demonstrate that you understand the bigger picture. Discuss how you’ve pushed back on requirements in the past and how you prioritise customer needs. This will show that you’re not just an executor but someone who thinks strategically.
✨Ask Thoughtful Questions
Prepare some insightful questions about the company’s tech stack, their approach to AI, or their expansion plans. This shows your intellectual curiosity and genuine interest in the role, making you stand out as a candidate who cares about the 'why' behind the work.
