Senior / Staff Backend Engineer

Senior / Staff Backend Engineer

Full-Time 48000 - 84000 € / year (est.) No home office possible
Capsa AI

At a Glance

  • Tasks: Build scalable systems and robust APIs for our cutting-edge AI platform.
  • Company: Join Capsa, a fast-growing AI startup transforming private equity.
  • Benefits: Enjoy remote work options, home-office setup budget, and a generous referral scheme.
  • Other info: Fast-paced environment with opportunities for 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 48000 - 84000 € 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: 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).

Seniority level: Mid-Senior level

Employment type: Full-time

Job function: Information Technology and Engineering

Senior / Staff Backend Engineer 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 opportunity to work closely with the founding team, shape the company's vision, and enjoy significant career advancement. The hybrid work model, generous remote working policy, and supportive culture make Capsa an attractive place for those looking to make a meaningful impact in the AI sector.

Capsa AI

Contact Detail:

Capsa AI Recruiting Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior / Staff Backend Engineer

Tip Number 1

Network like a pro! Reach out to your connections in the tech industry, especially those who might know someone at Capsa. A personal introduction can make all the difference and help you stand out from the crowd.

Tip Number 2

Prepare for the interview by brushing up on your technical skills and understanding the company’s mission. Be ready to discuss how your experience aligns with their goals, especially around building scalable systems and improving AI capabilities.

Tip Number 3

Showcase your projects! Bring examples of your past work that demonstrate your ability to take features from ideation to production. This will highlight your hands-on experience and problem-solving skills, which are crucial for a role at Capsa.

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 the initiative to engage directly with us.

We think you need these skills to ace Senior / Staff Backend Engineer

Python
FastAPI
Postgres
ElasticSearch
RabbitMQ
Redis
Distributed Systems

Some tips for your application 🫡

Tailor Your CV:Make sure your CV is tailored to the role of Senior/Staff 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 excited about Capsa and how your skills align with our mission. Don’t forget to mention your experience in fast-paced environments and your passion for delivering value.

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 driven results!

Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands. Plus, we’re eager to see what you can bring to our team!

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 tackled challenges in previous roles. Think about times when you took a product from ideation to production and how you measured its impact. 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 skills can contribute to their goals, especially in building scalable data pipelines and robust APIs.

Embrace the Startup Culture

Since Capsa is an early-stage startup, they’ll want to see that you can thrive in a fast-paced and sometimes messy environment. Share experiences where you adapted quickly to change or took initiative in a dynamic setting.