At a Glance
- Tasks: Design and deploy cutting-edge ML systems for top global brands.
- Company: Join Passionfruit, a dynamic Series A AI startup with $13.3M raised.
- Benefits: Competitive salary, impactful work, and a chance to shape the future of marketing.
- Other info: Work in a fast-paced environment with excellent growth opportunities.
- Why this job: Take ownership and transform marketing operations with innovative AI solutions.
- Qualifications: 4-8 years in ML systems, strong Python skills, and a passion for tech.
The predicted salary is between 70000 - 90000 £ per year.
As the most senior ML Engineer on a high-impact team, you will design and ship production LLM systems that automate complex marketing operations for Fortune 500 clients like PepsiCo and HSBC. You will build agentic workflows with persistent memory and tool use, transforming how global brands analyze data and execute campaigns.
Location: London, UK
Why this role is remarkable
- Take meaningful ownership of architecture and model selection as the most senior ML engineer on a small, elite technical team.
- Work at a well-funded Series A startup ($13.3M raised) backed by top-tier investors like Firstminute Capital and Seaya Ventures.
- Directly impact the marketing operations of some of the world's largest brands, moving them from manual "gut-feel" processes to AI-native precision.
What you will do
- Develop and deploy production-grade ML/LLM systems and agentic workflows with persistent memory and sophisticated tool-use capabilities.
- Integrate models with live enterprise data sources including Google Ads, GA4, Meta Ads, and various CRM and analytics platforms.
- Build and refine evaluation frameworks, retrieval systems, and fine-tuning processes specifically optimized for the marketing domain.
The ideal candidate
- Possesses 4-8 years of hands-on experience building and shipping production ML systems, with deep expertise in RAG and LLM agents.
- Demonstrates strong engineering fundamentals in Python and API development, with the ability to thrive in a fast-paced, high-ownership environment.
- Brings a proven track record of solving ambiguous technical challenges, ideally with exposure to adtech, marketing analytics, or Elixir.
ML Engineer at Passionfruit in London employer: Jack & Jill/External Ats
At Passionfruit, a well-funded Series A AI startup based in London, you will join an elite team as the most senior ML Engineer, taking meaningful ownership of innovative projects that directly impact Fortune 500 clients. Our vibrant work culture fosters creativity and collaboration, while offering ample opportunities for professional growth in a fast-paced environment. With a focus on cutting-edge technology and a commitment to transforming marketing operations, Passionfruit provides a unique platform for you to make a significant difference in the industry.
StudySmarter Expert Advice🤫
We think this is how you could land ML Engineer at Passionfruit in London
✨Tip Number 1
Get to know Jack! He’s your go-to AI for understanding what you bring to the table and what you want in your next role. A quick chat with him can really help tailor your approach and make you stand out.
✨Tip Number 2
Don’t be shy about showcasing your skills! When you talk to Jack, highlight your experience with ML systems and any cool projects you've worked on. This is your chance to shine and show why you're the perfect fit for Passionfruit.
✨Tip Number 3
Be proactive! After chatting with Jack, keep an eye on our website for updates and new opportunities. The more engaged you are, the better your chances of landing that ML Engineer role.
✨Tip Number 4
Remember, it’s all about connections! If Jill thinks you’re a great match, she’ll introduce you to the right people. So, make sure to express your enthusiasm for the role and the company during your chat with Jack.
We think you need these skills to ace ML Engineer at Passionfruit in London
Some tips for your application 🫡
Tailor Your CV:Make sure your CV is tailored to the ML Engineer role at Passionfruit. Highlight your experience with production ML systems and any relevant projects that showcase your skills in Python and API development.
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 background aligns with the needs of Passionfruit. Don’t forget to mention your experience with LLM systems and marketing analytics.
Showcase Your Achievements:When detailing your experience, focus on specific achievements rather than just responsibilities. Quantify your impact where possible, like improvements in efficiency or successful project outcomes, to grab Jill's attention.
Apply Through Our Website:We encourage you to apply through our website by clicking 'Talk to Jack'. This way, we can ensure your application gets the attention it deserves and helps us match you with the right opportunities!
How to prepare for a job interview at Jack & Jill/External Ats
✨Know Your ML Stuff
Make sure you brush up on your machine learning fundamentals, especially around LLM systems and RAG. Be ready to discuss your past projects in detail, focusing on the challenges you faced and how you overcame them.
✨Showcase Your Problem-Solving Skills
Prepare examples that highlight your ability to tackle ambiguous technical challenges. Think of specific instances where you had to innovate or adapt quickly, especially in a fast-paced environment like a startup.
✨Understand the Marketing Domain
Since this role involves transforming marketing operations, familiarise yourself with marketing analytics and adtech. Be prepared to discuss how your ML solutions can directly impact marketing strategies for big brands.
✨Ask Insightful Questions
At the end of the interview, have some thoughtful questions ready about the team dynamics, the company's vision, and how they measure success in their ML projects. This shows your genuine interest and helps you assess if it's the right fit for you.
