Find a job 
Featured Companies 
Featured Universities 
For Companies At a Glance
- Tasks: Design and build scalable backend systems and develop high-performance APIs.
- Company: Fast-scaling AI product company with a collaborative engineering team.
- Benefits: Competitive salary, high autonomy, and opportunity to shape backend architecture.
- Why this job: Join a dynamic team and make a real impact in the AI space.
- Qualifications: Strong experience with NodeJS and GraphQL, plus system design skills.
- Other info: Hybrid work model with excellent career growth opportunities.
The predicted salary is between 90000 - 100000 £ per year.
A fast-scaling AI product company is looking for a Senior Backend Developer to help build and scale a next-generation platform. This is a high-impact role within a small, ambitious engineering team, suited to someone who enjoys ownership and building robust systems from the ground up.
Salary: £90,000 - £100,000
Location: Hybrid in London office (1 day per week Max)
What you’ll be doing:
- Design and build scalable, production-grade backend systems
- Develop high-performance APIs and event-driven architectures
- Work with GraphQL and modern backend frameworks to power core product features
- Ensure reliability through monitoring, logging and resilient system design
- Collaborate closely with product, frontend and design teams to ship features end-to-end
- Contribute to architectural decisions as the platform scales
- Support AI and LLM-driven functionality within the product
What you’ll need:
- Strong commercial experience with NodeJS
- Experience with GraphQL, ideally within a structured backend framework
- Solid understanding of PostgreSQL and data modelling
- Strong system design skills and understanding of scalable architecture
- Experience building secure, enterprise-ready APIs
- Exposure to AI or LLM integrations
- Comfortable working in fast-moving, high-ownership environments
Nice to have:
- Experience with GCP
- Familiarity with infrastructure as code
- Background in a dev studio, product studio or agency environment
What’s on offer:
- Salary between £90,000 - £100,000
- Opportunity to shape backend architecture in a growing AI product business
- High autonomy and real ownership
- Work within a technically strong, collaborative team
If you’re a backend engineer who enjoys building scalable systems and taking technical ownership, I’d be keen to speak.
Frontend Developer - JavaScript - Financial Services in London employer: Digital Waffle
Contact Detail:
Digital Waffle Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Frontend Developer - JavaScript - Financial Services in London
✨Tip Number 1
Network like a pro! Reach out to your connections in the tech and financial services sectors. Attend meetups or webinars where you can chat with industry folks. You never know who might have the inside scoop on job openings!
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your best projects, especially those involving NodeJS and GraphQL. Make sure to include any AI integrations you've worked on. This will give potential employers a taste of what you can bring to their team.
✨Tip Number 3
Prepare for interviews by brushing up on system design and scalable architecture concepts. Be ready to discuss how you've built secure APIs in the past. Practising common interview questions can help you feel more confident when it’s time to shine!
✨Tip Number 4
Don’t forget to apply through our website! We’re always on the lookout for talented developers like you. Plus, it’s a great way to ensure your application gets seen by the right people in our ambitious engineering team.
We think you need these skills to ace Frontend Developer - JavaScript - Financial Services in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience with NodeJS, GraphQL, and scalable architecture. We want to see how your skills align with what we’re looking for, so don’t be shy about showcasing relevant projects!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Tell us why you’re excited about the role and how your background makes you a perfect fit. We love hearing about your passion for building robust systems and working in collaborative environments.
Showcase Your Projects: If you’ve worked on any cool projects, especially those involving AI or LLM integrations, make sure to mention them. We’re keen to see your hands-on experience and how you’ve tackled challenges in past roles.
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 don’t miss out on any important updates from our team!
How to prepare for a job interview at Digital Waffle
✨Know Your Tech Stack
Make sure you’re well-versed in NodeJS, GraphQL, and PostgreSQL. Brush up on your knowledge of scalable architecture and secure API design. Being able to discuss your experience with these technologies confidently will show that you’re the right fit for the role.
✨Showcase Your Problem-Solving Skills
Prepare to discuss specific challenges you've faced in previous projects and how you overcame them. This is especially important in a fast-moving environment where ownership and quick thinking are key. Use examples that highlight your ability to build robust systems from scratch.
✨Understand the Company’s Vision
Research the company’s AI product and its impact on financial services. Be ready to discuss how your skills can contribute to their goals, particularly in supporting AI and LLM-driven functionality. This shows genuine interest and alignment with their mission.
✨Prepare Questions for Them
Think of insightful questions to ask about the team dynamics, architectural decisions, and future projects. This not only demonstrates your enthusiasm but also helps you gauge if the company culture aligns with your values and work style.
