AI Engineer - Research

causaLens; City Of London; On-site; GBP 70,000 - 90,000; Full time

Job summary

A leading tech company in London seeks an AI Engineer to help enterprises implement cutting-edge AI solutions. The ideal candidate will have a PhD in a STEM field, extensive research experience, and a strong client-facing aptitude. This role offers competitive remuneration, 25 days of holiday, and various benefits like share options and learning budgets.

Benefits

25 days of paid holiday

Share options

Pension scheme

Learning and development budget

Health/Dental Insurance

Qualifications

• Experience in research and development to solve complex problems.
• Hands-on experience building production-grade solutions using LLMs.
• Client-facing experience with a forward deployed engineering mindset.

Responsibilities

• Tackle complex client problems through innovative solutions.
• Collaborate with enterprises to design and deploy workflows.
• Lead high-impact AI product deliveries from concept to deployment.

Skills

Research and development

LLMs

Client-facing experience

Solution architecture skills

Education

PhD in a STEM field

Job description

Overview

causaLens delivers Digital Workers that enterprises can truly rely on. Soon, competing without Digital Workers will be impossible. Just as it became unthinkable to manufacture without machines. We’ve built the first factory and Operating System for creating, deploying, and governing Digital Workers. For too long, enterprises have been bogged down by repetitive work, an overload of tools, and costly consultancies.

It’s time to simplify.

It’s time for Digital Workers to take on the repetitive workflows, freeing humans to focus on what matters most. Trusted by leading companies like J&J, Cisco, IPG Group, and Syneos Health.

Backed by over $50M in funding from world-class investors, including Molten Ventures (formerly Draper Esprit), Dorilton Capital, and IQ Capital, plus visionary angel investors such as the CEO of Revolut.

Here are 2 articles that define our culture: 1. A Hiring Framework for a New Kind of Services Company. 2. The Primacy of Winning.

We’re looking for AI Engineers who are passionate about helping world-leading enterprises put cutting-edge AI agents into production. You’ll work on impactful, high-visibility projects - designing, building, and delivering intelligent solutions that solve real business problems at scale.

What you’ll bring:

• PhD in a STEM field with demonstrated experience in research and development to solve complex, previously unseen problems.
• Hands-on experience building production-grade solutions using LLMs, RAGs, MCPs, and agentic workflows.
• Client-facing experience with a forward deployed engineering mindset. You’ll work directly with both technical teams and business stakeholders to understand real-world challenges and deliver solutions that drive measurable impact.
• Strong solution architecture and delivery skills: ability to translate complex business problems into scalable, intelligent AI solutions.

What you’ll do:

• Tackle some of the most complex and exciting client problems, using your research skills to come up with innovative solutions. Collaborate with others to work on strategic research initiatives.
• Collaborate directly with top-tier enterprises to understand needs, design and deploy bespoke agentic workflows.
• Design and implement robust architectures that leverage the latest AI technologies.
• Lead the delivery of high-impact AI products from concept to deployment.

Benefits

We care about our people’s lives, both inside and outside of causaLens. Beyond the core benefits like competitive remuneration and a great work-life balance, we offer the following:

• 25 days of paid holiday, plus bank holidays
• Carry over/sell holiday options (up to 5 days)
• Share options
• Pension scheme
• Happy hours and team outings
• Referral bonus program
• Cycle to work scheme
• Friendly tech purchases
• Benefits to choose from, including Health/Dental Insurance
• Special Discounts
• Learning and development budget
• Work abroad days
• Office snacks and drinks

Logistics

Our interview process consists of screening sessions with the hiring manager and a "Day 0" which involves an approximately 3-hour in-person challenge followed by an in-person presentation and interviews.

Have questions? We encourage open dialogue—reach out anytime.

If you require accommodations during the application process or in your role at causaLens, please contact us at [e-mail]