Senior Backend Engineer - AI Platform (Hybrid) in London

Senior Backend Engineer - AI Platform (Hybrid) in London

London Full-Time 70000 - 90000 £ / year (est.) Home office (partial)
Capsa AI

At a Glance

  • Tasks: Build robust systems for our cutting-edge AI platform and enhance investment expertise.
  • Company: Join Capsa, a fast-growing AI startup transforming private equity insights.
  • Benefits: Enjoy remote work options, home-office setup budget, and a generous referral scheme.
  • Other info: Fast-paced environment with direct access to founding team and rapid career growth.
  • Why this job: Shape the future of finance with innovative technology and make a real impact.
  • Qualifications: 4+ years in software engineering with experience in Python and scalable systems.

The predicted salary is between 70000 - 90000 £ per year.

Capsa is an AI platform that accelerates due diligence and deepens insights for Private Equity funds. We are hiring Staff / Senior Backend Engineers who are comfortable building robust, scalable systems that power our AI platform.

Location: London, UK (Hybrid, In-Person 4 days a week)

Experience: Required: 4+ years

Visa: Unfortunately, we don't sponsor visas yet. You must have the right to work in the UK.

About Capsa AI: At Capsa, we’re on a mission to transform how private capital firms source, analyse, and win deals. Our AI operating system accelerates due diligence, unlocks deeper insights, and helps funds focus on what matters — creating value. We’re lean, ambitious, and obsessed with building a category-defining company. In just 12 months, we’ve grown ARR by 15x, achieved product–market fit with leading multi-billion-dollar PE firms, and expanded across the US, UK, and Europe. Backed by top VCs and senior PE execs from Warburg Pincus, KKR, and Goldman Sachs, we’re just getting started.

The Role: A senior backend engineer at Capsa is expected to own projects and features from conception to production, building the infrastructure and services that underpin our AI platform. Key responsibilities include:

  • Improving our agent's capabilities - design and implement new features that endow our agent with human-level investment expertise.
  • Building scalable data pipelines - design and implement systems that ingest, process, and index large volumes of documents and financial data.
  • Developing robust APIs and services - create performant, reliable backend services that power our platform.
  • Improving connectivity - integrate and incorporate additional data sources into our agent loop, increasing the depth and breadth of the analyses that can be performed.
  • Maintaining high code quality - uphold rigorous standards across our codebase, ensuring tech debt doesn't impede our velocity.

Recent projects include:

  • Agentic assistant with a finance-focused toolkit and advanced document authoring features
  • Scalable document ingestion and indexing pipeline
  • In-house, streaming-first agent framework

As an early stage startup, working at Capsa will be hard work, it will be messy and at times it will be stressful. However, you will:

  • Work directly with our founding team.
  • Participate in the upside of an ultra-growth venture.
  • Shape the company's vision and will have a direct impact on its success.
  • Have the opportunity for fast career growth.

Apply if: You’ll likely be a great fit if most of the following describe you:

  • You have 4+ years of experience as a software engineer in a venture backed startup or top tech firm.
  • You have taken entire products or features from ideation to production and you've measured their impact.
  • You have experience with the following technologies (or similar): Python, FastAPI, Postgres, ElasticSearch, RabbitMQ, Redis, message queues, distributed systems.
  • You enjoy diving deep into the domain, understanding the problem, and focusing on delivering value to the customer.
  • You thrive in a fast paced environment.

Alongside the core role and growth opportunity, we also offer:

  • One month per year remote working.
  • Budget for setting up your Home-Office.
  • Generous referral scheme (£10k per hired referral).

Senior Backend Engineer - AI Platform (Hybrid) in London employer: Capsa AI

Capsa is an exceptional employer for Senior Backend Engineers, offering a dynamic and fast-paced work environment in London. With a strong focus on innovation and growth, employees have the unique opportunity to work closely with the founding team, directly influencing the company's trajectory while enjoying generous benefits such as remote working options and a substantial referral scheme. The culture at Capsa fosters collaboration and ambition, making it an ideal place for those looking to make a meaningful impact in the AI sector.

Capsa AI

Contact Details:

Capsa AI Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior Backend Engineer - AI Platform (Hybrid) in London

Tip Number 1

Network like a pro! Reach out to folks in your industry on LinkedIn or at meetups. A personal connection can often get you a foot in the door faster than any application.

Tip Number 2

Show off your skills! Create a portfolio or GitHub repo showcasing your projects. When you can demonstrate your expertise, it makes you stand out from the crowd.

Tip Number 3

Prepare for interviews by practising common technical questions and coding challenges. We all know that confidence is key, so the more you practice, the better you'll perform!

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 Backend Engineer - AI Platform (Hybrid) in London

Python
FastAPI
Postgres
ElasticSearch
RabbitMQ
Redis
Message Queues

Some tips for your application 🫡

Tailor Your CV:Make sure your CV is tailored to the role of Senior Backend Engineer. Highlight your experience with relevant technologies like Python and FastAPI, and showcase any projects where you've taken features from ideation to production.

Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Use it to explain why you're passionate about AI and how your skills align with our mission at Capsa. Don’t forget to mention your experience in fast-paced environments!

Showcase Your Impact:When detailing your past experiences, focus on the impact you made. Use metrics where possible to demonstrate how your contributions improved systems or processes. We love seeing how you’ve added value in previous 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’re considered for this exciting opportunity at Capsa!

How to prepare for a job interview at Capsa AI

Know Your Tech Stack

Make sure you’re well-versed in the technologies mentioned in the job description, like Python, FastAPI, and Postgres. Brush up on your knowledge of distributed systems and be ready to discuss how you've used these tools in past projects.

Showcase Your Problem-Solving Skills

Prepare to share specific examples of how you've taken products or features from ideation to production. Highlight the challenges you faced and how you measured the impact of your work, as this will demonstrate your ability to deliver value.

Understand Capsa's Mission

Familiarise yourself with Capsa’s mission to transform private capital firms' operations. Be ready to discuss how your experience aligns with their goals and how you can contribute to building their AI platform.

Embrace the Startup Culture

Since Capsa is an early-stage startup, be prepared to talk about your adaptability and how you thrive in fast-paced environments. Share experiences where you’ve successfully navigated challenges and contributed to a team’s success under pressure.