Machine Learning Engineer

Shape the Future of Marketing Intelligence with Alphix

At Alphix, we’re redefining what’s possible in marketing performance and activation. As part of Fundamental Group, an established and trusted name in media intelligence, Alphix operates with the speed, mindset and energy of a start up, constantly experimenting, innovating, and deploying powerful solutions that give marketers the clarity and confidence to act faster and smarter.

We're now looking for an exceptional Machine Learning Engineer who is excited to help spearhead our LLM capabilities and shape our AI architecture, taking us to the next level of insight-driven marketing automation.

What You'll Be Doing

• Lead the development of Alphix’s LLM-powered features and services – from prototype to production – enabling automation, summarisation, semantic insights and next-gen user experiences.
• Design and build vector database solutions for scalable semantic search, contextual analysis, and real-time decision-making.
• Work cross-functionally with product, engineering and data teams to deploy machine learning models in a production environment, with real users and measurable impact.
• Research and implement novel AI/ML techniques– from RAG pipelines and embedding optimization to custom LLM tuning – to solve real-world marketing challenges.
• Champion ML best practices, robust pipelines (MLOps), and high-quality model monitoring.
• Constantly explore emerging tools and integrate them where they create real business value.

About You

• You’re a creative builder, excited by the chance to develop intelligent systems that didn’t exist before.
• Deep hands-on experience with:
• Vector databases
• LLM application stacks (RAG pipelines, prompt engineering, model evaluation)
• Deployment of ML models at scale
• You’ve built and deployed AI/ML solutions that had real, measurable impact for clients or internal users, and you can talk us through them.
• You have a strong foundation in machine learning, NLP, data engineering and model architecture.
• Curious, collaborative and self-directed, you thrive in environments where ambiguity = opportunity.
• You care about user experience and business outcomes as much as you do about algorithmic elegance.

Why Join Alphix?

• Break new ground: We’re building the next generation of marketing intelligence from first principles, not retrofitting old tech.
• Own your impact: Your work will touch real users, drive decision-making, and be a core part of the product roadmap.
• Innovation at speed: We move fast, test ambitiously, and keep learning. Expect hackathons, prototypes, and quick wins, balanced with big thinking and long-term vision.
• Support + stability: As part of Fundamental Group, you get the best of both worlds, start up freedom with enterprise backing.

Ready to Build with Us?

If you're passionate about solving tough problems with smart code, deploying AI with real-world value, and pushing boundaries in an ambitious, supportive team, we want to hear from you.

Apply now or reach out to our team with examples of your work, side projects, or anything else you think showcases your capabilities.

Company Benefits

• A competitive salary and bonus structure
• Excellent benefits including Pension contribution, Private healthcare, Life cover, Cycle Scheme, Season ticket loans, 25 days’ annual leave, 2 days paid leave for charity work, Study loans and free snacks
• The opportunity to fast track your career. We believe in recognition, reward and progression – partnered with the appropriate training and support
• International exposure and intra-company transfer opportunities
• A dynamic place to work in a contemporary, team focussed and forward-thinking company. We are a friendly but driven team
• Choice of tech

Reach your potential with us

We recognise and reward talent, hard work and driven people. Your career aspirations are important to us and we will support you to achieve your goals.

Our internal mentoring programme, was introduced to support employees reach their full potential and promote career progression within the organisation.

This has been well received and has resulted in many internal promotions! We run CPD to keep the team up to date with industry developments as well as a 'hands on' investment programme.

Work hard, have fun, make a difference

We recognise our hard working team, so often organise fun activities to show our appreciation, promote collaboration and team building. This is an important part of our culture. We believe that a company should be fun, friendly, engaging and collaborative!

We also believe in giving back to our community. This is important to our people and to us. We offer 2 paid days for voluntary work and some exciting activities; abseiling, tough mudder, bake off's, etc. We welcome any new suggestions!

Interview Process

1. First round screening call to assess experience and company fit.

2. Second round technical call with Head of Engineering and/or Director of Innovation

3. Final round interview with remaining leadership