Staff Machine Learning Scientist

Fin. The highest performing Customer Agent; Greater London; Hybrid; GBP 110,000 - 170,000; Full time

Benefits offered by this job

Competitive salary and equity

Lunch provided

Health and dental insurance

Open vacation policy

Maternity/paternity leave

Cycle-to-Work

MacBooks provided

Access to AI tools

Job summary

Fin is an AI Customer Agent company seeking a senior ML leader to drive research, prototyping, and production deployment of impactful ML features. You will mentor engineers, raise technical standards, and partner with product and design to ship cutting-edge solutions that scale across channels and customers.

You will operate in a product-focused team, enabling rapid beta releases while delivering measurable business value and maintaining strong cross-functional collaboration.

Qualifications

• 5–8 years applied ML experience.
• Background in a senior/staff role (data science, software, or academia).
• Demonstrated product impact and leadership.
• Strong programming skills across modern ML stacks.
• Experience as primary technical leader for a team.
• Excellent cross-disciplinary communication.
• Comfort with ambiguity in product-driven ML work.
• Advanced ML education (e.g., MSc).
• Solid scientific thinking and experimentation mindset.

Responsibilities

• Mentor engineers and contribute to career development.
• Raise technical standards for performance and reliability.
• Identify ML opportunities that create customer value.
• Frame product problems with product and design stakeholders.
• Conduct exploratory data analysis and research.
• Select algorithms and tools; balance pragmatism with cutting-edge.
• Perform offline evaluation to validate algorithms.
• Collaborate with engineers to deploy prototypes to production.
• Plan, measure, and share learnings to inform iterations.
• Partner with the team to ship high-quality ML products.

Skills

Applied ML

Senior leadership

Strong programming

Communication skills

Ambiguity tolerance

ML research

MSc in ML

Education

Master's in ML

PhD helpful

Tools

Python

PyTorch

TensorFlow

ML tooling

Job description

Fin is the AI Customer Agent company on a mission to help businesses provide perfect customer experiences.

Our AI Agent Fin is the highest-performing AI Customer Agent on the market today, enabling businesses to deliver impeccable, always-on customer support across the customer journey – from service, to sales, to ecommerce. Powered by our own AI models, Fin resolves complex customer issues end-to-end across every channel, with minimal set-up and integration. Fin can also be combined with our natively integrated Intercom help desk for one single system that is designed to meet the needs of modern day support teams.

Founded in 2011, Fin became one of the fastest growing companies and remains one of the largest private software companies in the world with nearly 30,000 global businesses using our products to transform their customer support. Driven by our core values, we push boundaries, build with speed and intensity, and relentlessly deliver incredible value to our customers.

What's the opportunity?

Fin's Machine Learning team is responsible for defining new ML features, researching appropriate algorithms and technologies, and rapidly getting first prototypes in our customers’ hands.

We are an extremely product focussed team. We work in partnership with Product and Design functions of teams we support. Our team's dedicated ML product engineers enable us to move to production fast, often shipping to beta in weeks after a successful offline test.

We are very passionate about applying machine learning technology, and have productized everything from classic supervised models, to cutting-edge unsupervised clustering algorithms, to novel applications of transformer neural networks. We test and measure the real customer impact of each model we deploy.

What will I be doing?

• Play an active role in hiring, mentoring and career development of other engineers
• Raise the bar for technical standards, performance, reliability, and operational excellence
• Identify areas where ML can create value for our customers
• Identify the right ML framing of product problems - Working with teammates and Product and Design stakeholders
• Conduct exploratory data analysis and research - Deeply understand the problem area
• Research and identify the right algorithms and tools - Being pragmatic, but innovating right to the cutting-edge when needed
• Perform offline evaluation to gather evidence an algorithm will work
• Work with engineers to bring prototypes to production
• Plan, measure & socialise learnings to inform iteration
• Partner deeply with the rest of team, and others, to build excellent ML products

What skills might I need?

• 5-8 years applied ML experience
• Previous background in a senior/staff role (data science, software development or academic)
• Significant, demonstrated impact that your work has had on the product and/or the teams
• Strong programming skills
• Experience as the primary technical leader for a team
• Strong communication skills, both within engineering teams and across disciplines.
• Comfort with ambiguity
• Typically have advanced education in ML or related field (e.g. MSc)
• Scientific thinking skills

Bonus skills & attributes

• Track record shipping ML products
• PhD or other experience in a research environment
• Deep experience in an applicable ML area - E.g. NLP, Deep learning, Bayesian methods, Reinforcement learning, clustering
• Strong stats or math background
• Visualization, data skills, SQL, matplotlib, etc.

Benefits

We are a well treated bunch, with awesome benefits! If there’s something important to you that’s not on this list, talk to us!

• Competitive salary and equity in a fast-growing start-up
• We serve lunch every weekday, plus a variety of snack foods and a fully stocked kitchen
• Regular compensation reviews - we reward great work!
• Peace of mind with life assurance, as well as comprehensive health and dental insurance for you and your dependents
• Open vacation policy and flexible holidays so you can take time off when you need it
• Paid maternity leave, as well as 6 weeks paternity leave for fathers, to let you spend valuable time with your loved ones
• If you’re cycling, we’ve got you covered on the Cycle-to-Work Scheme. With secure bike storage too
• MacBooks are our standard, but we’re happy to get you whatever equipment helps you get your job done
• Unlimited access to Claude Code and best-in-class AI tools; experimentation & building is encouraged & celebrated

We are a diverse bunch of people and we want to continue to attract and retain a diverse range of people into our organisation. We're committed to an inclusive and diverse Fin! We do not discriminate based on gender, ethnicity, sexual orientation, religion, civil or family status, age, disability, or race.

At Fin, we want to give people what they need to do the best work of their careers. Our benefits and programs are designed to support your health and wellbeing, your family, your time away from work, and your financial future. Offerings vary by location in line with local practices and requirements.

Learn more about working at Fin and the benefits we offer at fin.ai/careers.

Policies

Fin has a hybrid working policy. We believe that working in person helps us stay connected, collaborate easier and create a great culture while still providing flexibility to work from home. We expect employees to be in the office at least three days per week.

We have a radically open and accepting culture at Fin. We avoid spending time on divisive subjects to foster a safe and cohesive work environment for everyone. As an organization, our policy is to not advocate on behalf of the company or our employees on any social or political topics out of our internal or external communications. We respect personal opinion and expression on these topics on personal social platforms on personal time, and do not challenge or confront anyone for their views on non-work related topics. Our goal is to focus on doing incredible work to achieve our goals and unite the company through our core values.

Fin values diversity and is committed to a policy of Equal Employment Opportunity. Fin will not discriminate against an applicant or employee on the basis of race, color, religion, creed, national origin, ancestry, sex, gender, age, physical or mental disability, veteran or military status, genetic information, sexual orientation, gender identity, gender expression, marital status, or any other legally recognized protected basis under federal, state, or local law.