About the role

We are looking for aSenior Machine Learning Engineerto join our AI team and help us build cutting-edge legal solutions for some of the world’s largest law firms. In this role, you will leverage your deep expertise in machine learning, natural language processing, and large language model (LLM) agents to push the boundaries of legal technology. You’ll be collaborating closely with data scientists, software engineers, and product managers to integrate advanced NLP techniques into our products.

What You’ll Do

• Innovative NLP Research:Research, evaluate, and implement state-of-the-art NLP methodologies and large language model approaches to drive product innovation and develop new functionalities.
• LLM Agents & Multi-Agent Systems:Design, develop, and deploy LLM agents and multi-agent systems to automate complex legal workflows and enhance user experiences.
• Advanced Technology Integration:Collaborate on projects that leverage emerging technologies - such as Retrieval-Augmented Generation (RAG) and Knowledge Graphs - to enhance our core product and explore new use cases.
• Cross-Functional Collaboration:Work closely with cross-functional teams to integrate advanced ML models and NLP solutions into our platform, ensuring they align with business objectives and provide tangible value.
• Strategic Innovation:Stay current with the latest trends and breakthroughs in NLP, machine learning, and multi-agent systems, and contribute ideas that shape the strategic direction of our AI initiatives.

About You

• Machine Learning & NLP Expertise:Strong understanding of machine learning and natural language processing with relevant commercial experience in building and deploying NLP solutions.
• MLOps & CI/CD Proficiency:Solid understanding of MLOps best practices with experience in designing and implementing CI/CD pipelines and deploying applications to AWS at scale.
• Cloud & Containerization Skills:Experience with the AWS cloud platform and containerization technologies (e.g., Docker, Kubernetes).
• Collaboration & Communication:Strong collaboration and communication skills to work effectively with cross-functional teams and articulate technical concepts to non-technical stakeholders.
• Proactivity & Continuous Improvement:Proactive in identifying problems, performance bottlenecks, and areas for improvement while taking pride in building and operating scalable, reliable, and secure systems.
• LLM Agents & Multi-Agent Systems:Proven experience in designing, deploying, and scaling large language model (LLM) agents and multi-agent systems to enhance NLP capabilities and automate complex workflows.

Nice to have:

• Experience with knowledge graphs like Neo4j
• Experience in optimizing graph database performance and ensuring the scalability of graph-based solutions.
• Experience with LangGraph for Agentic Systems

What we offer

• Salary: £90-120K + bonus based on experience.
• Private Medical
• An opportunity to be an integral part of a fast-growing startup as we move to scale-up
• Work in a truly meritocratic organisation, alongside highly motivated individuals
• A chance to work with some of the world’s leading law firms, financial institutions and multinational corporations
• Office in the heart of London’s bustling Aldgate with the option to do hybrid working
• Training and support
• 25 days holiday per year excluding UK bank holidays
• Pension
• Flexible Working
• Equipment

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Most importantly, if you’re someone with a can-do attitude who is willing to get their hands dirty to help us exceed our wildest expectations, then please do not hesitate to apply.

About Definely

At Definely, we’re on a mission to simplify the way legal professionals access and understand complex information in legal documents. Trusted by a global community of customers, our LegalTech solutions integrate seamlessly into lawyers' daily workflows, making it easier to draft, review and navigate even the most complex contracts.

Our products provide instant access to essential information, enabling legal teams to review clauses and provisions in context, reduce risk and work more efficiently – all without disrupting their flow. At Definely, we’re dedicated to solving real challenges faced by legal professionals.

Joining Definely means becoming part of a forward-thinking, collaborative team that prioritises innovation and people. We create a supportive environment driven by a shared commitment to connection, growth and success.

Recognised in the top 25 of Deloitte's prestigious UK Technology Fast50 in 2023 and backed by Microsoft, Google, and Octopus Ventures, we’re trusted by leading law firms and in-house legal teams, including A&O Shearman, Dentons, Deloitte, and Barclays, to streamline their workflows and mitigate risks.