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For Companies At a Glance
- Tasks: Design and build production-grade APIs for AI-powered systems.
- Company: Fast-growing, VC-backed startup with a remote-first culture.
- Benefits: Competitive salary, meaningful equity, and 35 days holiday.
- Other info: High autonomy, direct collaboration with founders, and dynamic work environment.
- Why this job: Shape backend architecture and make a real impact in AI development.
- Qualifications: Strong Node.js/TypeScript experience and backend system expertise.
The predicted salary is between 72000 - 84000 ÂŁ per year.
We’re hiring a Senior Backend Engineer to join a fast-growing, VC-backed startup building developer-facing AI infrastructure. This is not a typical “CRUD API” role. You’ll be building and owning the backend foundations behind AI-powered systems used by real users in production — APIs, distributed services, async workflows, data pipelines, and infrastructure that needs to scale reliably.
What You’ll Work On
- Designing and building production-grade APIs used by external developers
- Owning backend services that support AI agents and large data workflows
- Handling async processing, queues, caching, and traffic spikes
- Building systems that process complex or heavy data payloads
- Collaborating closely with Product & Design in a small, high-autonomy team
- Making pragmatic architectural decisions in a fast-moving environment
What We’re Looking For
- Strong experience building and scaling backend systems in production
- Deep knowledge of Node.js / TypeScript
- Experience with:
- Distributed systems
- Async workflows
- Event-driven architecture
- Queues / background jobs
- Caching strategies
Nice to Have
- Experience building AI-powered backend systems (LLMs, RAG, agents)
- Platform / infrastructure experience
- Experience designing APIs used by other engineers
- Exposure to self-hosted or enterprise deployment models
Not the Right Fit If
- Your experience is primarily frontend-focused
- Most of your background is ecommerce, digital agencies, or enterprise-only environments
- You prefer highly structured orgs with strict roadmaps and layers of management
What You’ll Get
- Competitive salary + meaningful equity
- 35 days holiday (including local holidays)
- Remote-first culture
- High ownership and real impact
- Direct collaboration with founders
- Opportunity to shape backend architecture from the ground up
Senior Software Engineer in London employer: Connect-AI
Contact Detail:
Connect-AI Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Software Engineer in London
✨Tip Number 1
Network like a pro! Reach out to your connections in the tech world, especially those who work in startups or have experience with AI infrastructure. A personal referral can make all the difference in getting noticed.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your backend projects, especially those involving Node.js and TypeScript. This will give potential employers a taste of what you can bring to the table.
✨Tip Number 3
Prepare for technical interviews by brushing up on distributed systems and async workflows. Practice coding challenges that focus on building APIs and handling data pipelines to impress during the interview.
✨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 are proactive about their job search.
We think you need these skills to ace Senior Software Engineer in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience with Node.js and TypeScript, as well as any work you've done on backend systems. We want to see how your skills align with the role, so don’t be shy about showcasing relevant projects!
Craft a Compelling Cover Letter: Your cover letter is your chance to tell us why you’re the perfect fit for our team. Share your passion for building scalable systems and any experience you have in VC-backed startups. Let your personality shine through!
Showcase Your Projects: If you’ve worked on any interesting projects, especially those involving AI or complex data workflows, make sure to mention them. We love seeing real-world applications of your skills, so include links or descriptions that highlight your contributions.
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. Plus, it shows us you’re keen to join our team!
How to prepare for a job interview at Connect-AI
✨Know Your Tech Stack Inside Out
Make sure you’re well-versed in Node.js and TypeScript, as these are crucial for the role. Brush up on your knowledge of distributed systems and async workflows, and be ready to discuss how you've implemented these in past projects.
✨Showcase Your Problem-Solving Skills
Prepare to talk about specific challenges you've faced while building backend systems. Highlight your experience with handling traffic spikes, caching strategies, and processing heavy data payloads. Real-world examples will make your answers stand out!
✨Emphasise Collaboration and Communication
Since this role involves working closely with Product & Design, be ready to discuss how you’ve collaborated in previous roles. Share examples of how you’ve communicated effectively in remote environments, especially when making architectural decisions.
✨Demonstrate Your Autonomy
This position requires a high level of autonomy, so be prepared to explain how you manage your time and projects without micromanagement. Discuss any experiences where you took ownership of a project and the impact it had on your team or product.