Software Engineer - Java and GenAI

• Train, fine-tune, and evaluate large-language / foundation models, while also applying parameter-efficient techniques, reinforcement learning, and prompt engineering approaches
• Build and enhance memory and context management systems: manage short- and long-term context, embeddings, and retrieval pipelines so Maia can access relevant information effectively
• Integrate structured knowledge sources such as knowledge graphs and ontologies to improve consistency, reasoning, and reduce hallucinations
• Develop capabilities for ingesting and processing multiple unstructured and multi-format data types (text, audio, etc.), designing pipelines for parsing, embedding, indexing, and retrieval
• Optimise inference and system performance: reduce latency, increase throughput, design efficient prompt pipelines, and engineer for cost-effective scaling
• Define and implement monitoring and evaluation frameworks: track metrics such as accuracy, drift, error rates, and user satisfaction; set up feedback loops to ensure robustness and reliability
• Collaborate with engineers, product managers, and UX teams to turn experimental techniques into stable, scalable features that deliver measurable value
• Stay hands-on: write code, prototype solutions, and contribute directly to implementation (with some work in Java where relevant)
  

• Deep AI Expertise: Proven experience working with large language / foundation models, including training, tuning, and applying modern GenAI techniques such as reinforcement learning, memory and context systems, retrieval augmentation, structured knowledge integration, optimisation, and evaluation
• Academic Rigor: Master’s degree in a relevant field required; PhD preferred
• Programming Ability: Strong coding skills in Java are required
• Product Delivery Experience: Track record of delivering software features or products in a collaborative environment, ideally within a product-led organisation
• Curiosity & Drive: Passion for emerging AI technologies, with the ability to critically evaluate new research and translate it into practice
• Collaborative Mindset: Comfortable working cross-functionally to move from prototypes to production-ready features
  

Join Matillion and help redefine what's possible in data engineering.

If you're excited to apply cutting-edge AI in a way that’s rigorous, innovative, and impactful—this is your role.

At Matillion, we are committed to providing competitive salaries in line with market standards. Our estimated compensation range for this position is £71,520 - £107,280, but the final salary will be based on your relevant skills, experience and qualifications demonstrated in the hiring process.

At Matillion, we’re here to do something hard - change the way the world works with data, and build a great company along the way. Big, bold goals aren’t for the faint-hearted, and we don’t shy away from them. But we don’t do it alone. No egos, no politics - just great people working together, guided by our six core values;

- Confidence without arrogance

- Working with integrity

- Customer obsessed

- Innovate and demand quality

- Bias for action

- We care

We operate a flexible working culture that promotes work-life balance, with benefits including:

- Company Equity

- 30 days holiday + bank holidays

- 5 days paid volunteering leave

- Health insurance

- Life Insurance

- Pension

- Access to mental health support

More about Matillion

Thousands of enterprises including Cisco, London Stock Exchange Group, EDF and Slack trust Matillion for a wide range of use cases from insights and operational analytics, to data science, machine learning and AI. We are a truly global workforce, dual headquartered in Manchester, UK and Denver, Colorado, with expanding offices in Hyderabad, India, along with valuable remote colleagues around the world. 

We are keen to hear from prospective Matillioners, so even if you don't feel you match all the criteria please apply and a member of our Talent Acquisition team will be in touch. Alternatively, if you're interested in Matillion but don't see a suitable role, please email [email protected].

Find out more about life on #TeamGreen here. 

Matillion is an equal opportunity employer. We celebrate diversity and we are committed to creating an inclusive environment for all of our team. Matillion prohibits discrimination and harassment of any type. Matillion does not discriminate on the basis of race, colour, religion, age, sex, national origin, disability status, genetics, sexual orientation, gender identity or expression, or any other characteristic protected by law.