Senior / Staff AI Engineer

Senior / Staff AI Engineer

Full-Time 36000 - 60000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Build and enhance AI agents, pushing the limits of what's possible with LLMs.
  • Company: Capsa, a fast-growing AI platform transforming private equity insights.
  • Benefits: Private healthcare, remote work options, and home-office setup budget.
  • Why this job: Join a dynamic startup and directly impact the future of AI in finance.
  • Qualifications: 4+ years in software engineering with AI/ML experience.
  • Other info: Fast-paced environment with opportunities for rapid career growth.

The predicted salary is between 36000 - 60000 £ per year.

Capsa is an AI platform that accelerates due diligence and deepens insights for Private Equity funds. We are hiring Staff / Senior AI Engineers who are comfortable building and improving our AI agents and pushing the boundaries of what's possible with LLMs.

Role: AI Engineer

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 AI engineer at Capsa is expected to own projects and features from conception to production, focusing on our core AI capabilities and agent infrastructure. Key responsibilities include:

  • Improving our agent's capabilities - design and implement new features that endow our agent with human-level investment expertise.
  • Designing and optimising prompts, agent architectures, and reasoning chains to maximise output quality and reliability.
  • Evaluating and integrating new models, techniques, and research to keep our AI capabilities at the cutting edge.
  • 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
  • AI-assisted document editor

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.
  • Enjoy yourself!

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 with significant exposure to AI/ML systems 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, LLMs (OpenAI, Anthropic, open-source models), agent frameworks, RAG pipelines, vector databases, FastAPI, Postgres, ElasticSearch.
  • 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.

Additional Perks

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

  • Private healthcare insurance.
  • One month per year remote working.
  • Budget for setting up your Home-Office.

Senior / Staff AI Engineer employer: Cornerstone VC

Capsa is an exceptional employer for Senior AI Engineers, offering a dynamic and innovative work environment in London. With a strong focus on employee growth, you will have the opportunity to work closely with the founding team, directly influencing the company's vision and success while enjoying fast career progression. The hybrid work model, private healthcare insurance, and additional perks like remote working options and home-office setup budgets further enhance the rewarding experience of being part of this ambitious startup.
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Contact Detail:

Cornerstone VC Recruiting Team

StudySmarter Expert Advice 🤫

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

✨Tip Number 1

Network like a pro! Reach out to current employees at Capsa on LinkedIn or other platforms. Ask them about their experiences and any tips they might have for the interview process. It’s all about making connections!

✨Tip Number 2

Prepare for technical interviews by brushing up on your AI/ML knowledge. Make sure you can discuss your past projects in detail, especially those that involved LLMs or agent frameworks. We want to see your passion and expertise shine through!

✨Tip Number 3

Showcase your problem-solving skills! During interviews, be ready to tackle hypothetical scenarios related to AI capabilities and integration. Think out loud so we can see your thought process and how you approach challenges.

✨Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, it shows us you’re genuinely interested in being part of the Capsa team. Let’s make it happen!

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

AI/ML Systems
Python
LLMs (OpenAI, Anthropic, open-source models)
Agent Frameworks
RAG Pipelines
Vector Databases
FastAPI
Postgres
ElasticSearch
Project Ownership
Feature Design and Implementation
Code Quality Maintenance
Data Integration
Analytical Thinking
Adaptability in Fast-Paced Environments

Some tips for your application 🫡

Tailor Your CV: Make sure your CV is tailored to the role of Senior/Staff AI Engineer. Highlight your experience with AI/ML systems and any relevant projects you've worked on. We want to see how your skills align with what we're doing at Capsa!

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Share your passion for AI and how you can contribute to our mission at Capsa. Be sure to mention specific technologies you're familiar with that match our needs.

Showcase Your Projects: If you've worked on any cool AI projects, make sure to showcase them in your application. We love seeing real-world applications of your skills, especially if they relate to LLMs or agent frameworks!

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 the role. Plus, it shows you’re keen on joining our team!

How to prepare for a job interview at Cornerstone VC

✨Know Your AI Stuff

Make sure you brush up on your knowledge of AI/ML systems, especially LLMs and agent frameworks. Be ready to discuss specific projects you've worked on, the technologies you used, and the impact they had. This will show that you’re not just familiar with the concepts but have hands-on experience.

✨Showcase Your Problem-Solving Skills

Prepare to talk about how you've tackled complex problems in previous roles. Capsa is looking for someone who can dive deep into challenges and deliver real value. Think of examples where you designed and implemented features that improved AI capabilities or optimised processes.

✨Understand Capsa's Mission

Familiarise yourself with Capsa's mission to transform private capital firms. Be ready to discuss how your skills and experiences align with their goals. Showing that you understand their vision will demonstrate your genuine interest in the role and the company.

✨Ask Insightful Questions

Prepare some thoughtful questions about the team, projects, and future direction of Capsa. This not only shows your enthusiasm but also helps you gauge if the company culture and work environment are a good fit for you. Plus, it’s a great way to engage with your interviewers!

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