At a Glance
- Tasks: Own features end-to-end and build scalable payments infrastructure.
- Company: High-growth, AI-first fintech with a mission-led product.
- Benefits: Up to £130k salary, hybrid working, and real ownership from day one.
- Other info: Mentorship opportunities and a focus on meaningful problem-solving.
- Why this job: Be at the forefront of AI-assisted development in a dynamic team.
- Qualifications: Strong Full Stack experience and confidence in TypeScript.
The predicted salary is between 130000 - 130000 £ per year.
We’re working with a high-growth, AI-first fintech that’s quietly building something pretty special and now looking to add a Senior Full Stack Engineer to their team. This isn’t your typical “we use AI” environment. Engineering here is genuinely LLM-first. Think day-to-day development powered by tools like Claude Code and Codex, with engineers actively shaping how AI integrates into real production workflows.
What you’ll be doing:
- Owning features end to end across a modern full stack environment
- Building and scaling payments infrastructure across multiple markets
- Working closely with product and data to solve complex, real-world problems
- Playing a key role in evolving how the team leverages AI in software development
- Mentoring and raising the bar across engineering
Tech environment:
- TypeScript at the core, alongside Python and Ruby
- Modern backend frameworks and distributed systems
- Cloud-native infrastructure (AWS, Kubernetes)
- Strong focus on observability, reliability and clean architecture
What they’re looking for:
- Strong experience as a Full Stack or Backend leaning engineer
- Confidence working with TypeScript (or similar high-level languages)
- Curiosity and enthusiasm for AI-assisted development
- People who ask great questions and enjoy solving meaningful problems
Why it’s interesting:
- AI isn’t a side project here, it’s central to how the team operates
- Real ownership and impact from day one
- Mission-led product
- Hybrid working, 3 days per week in a central London office
Salary - Up to £130k
If you’re someone who’s curious about where software engineering is heading, and want to be in a team actually pushing that forward, this is worth a conversation.
Senior Software Engineer C# - FLEXIBLE WORKING in London employer: Wave Group
Join a pioneering AI-first fintech that prioritises innovation and collaboration, offering a dynamic work culture where your contributions truly matter. With flexible working arrangements and a focus on employee growth, you'll have the opportunity to shape the future of software engineering while enjoying a supportive environment in the heart of London. This is not just a job; it's a chance to be part of something transformative in the tech landscape.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Engineer C# - FLEXIBLE WORKING in London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Wave Group or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Wave Group.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Wave Group.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Wave Group that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Senior Software Engineer C# - FLEXIBLE WORKING in London
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Wave Group.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Wave Group and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Wave Group
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Wave Group uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
