Senior Software Engineer - AI & LLM

Matillion is The Data Productivity Cloud.

We are on a mission to power the data productivity of our customers and the world, by helping teams get data business ready, faster. Our technology allows customers to load, transform, sync and orchestrate their data. 

We are looking for passionate, high-integrity individuals to help us scale up our growing business. Together, we can make a dent in the universe bigger than ourselves.

With offices in the UK, US and Spain, we are now thrilled to announce the opening of our new office in Hyderabad, India. This marks an exciting milestone in our global expansion, and we are now looking for talented professionals to join us as part of our founding team.

About the Role

Matillion is on the lookout for passionate and experienced Senior Software Engineer to join #TeamGreen, contributing to the evolution of our platform with cutting-edge technologies and AI innovation.

As a Senior Software Engineer, you’ll play a key role in a collaborative, cross-functional development team. You’ll own end-to-end development of new features and enhancements across Matillion’s cloud-native data products—driving innovation through both engineering excellence and the integration of generative AI capabilities.

• Design, build, and maintain scalable production services using Java, Spring, React, and containerized microservices with Docker and Kubernetes.
• Build and enhance applications that leverage Generative AI, integrating with LLM APIs like OpenAI, Anthropic, or HuggingFace.
• Utilize RAG (Retrieval-Augmented Generation), prompt engineering, and LLM tuning to deliver intelligent, responsive AI-driven features.
• Collaborate within your team and across the organization to understand user needs and turn ideas into polished solutions using Agile methodologies.
• Own the full development lifecycle—code, test, deploy, maintain—and contribute to CI/CD pipelines and cloud infrastructure (AWS preferred).
• Participate in architectural discussions and research initiatives, staying at the forefront of new technologies and generative AI innovations.
• Mentor junior engineers and continuously improve team practices and code quality through thoughtful code reviews and technical leadership.

• Core Skills & Experience
• Proficiency in Java (Spring Boot) and ideally React.
• Strong knowledge of OOP, software design principles, and coding best practices.
• Experience with containerization (Docker), microservices, and relational databases (e.g., PostgreSQL, MySQL).
• Familiarity with cloud platforms (AWS preferred) and infrastructure as code.
• Hands-on experience with CI/CD pipelines and Agile development.

• Essential for This Role
• Experience working with LLM APIs (OpenAI, Anthropic, HuggingFace).
• Strong knowledge of prompt engineering, system/user prompts, tokens, context windows, temperature, top P, and stop sequences.
• Experience using RAG to enhance LLM performance and response accuracy.

• Desirable (Nice to Have)
• Experience with model fine-tuning, prompt compression, and LLM evaluation frameworks.
• Understanding of generative AI design patterns such as prompt chaining, routing, or agentic architectures.
• Familiarity with abstraction libraries like Spring AI.

Matillion has fostered a culture that is collaborative, fast-paced, ambitious, and transparent, and an environment where people genuinely care about their colleagues and communities. 

Our 6 core values guide how we work together and with our customers and partners. We operate a truly flexible and hybrid working culture that promotes work-life balance, and are proud to be able to offer the following benefits:

- Company Equity

- 27 days paid time off

- 12 days of Company Holiday

- 5 days paid volunteering leave

- Group Mediclaim (GMC)

- Enhanced parental leave policies

- MacBook Pro

- Access to various tools to aid your career development

More about Matillion

Thousands of enterprises including Cisco, DocuSign, Slack, and TUI trust Matillion technology to load, transform, sync, and orchestrate their data for a wide range of use cases from insights and operational analytics, to data science, machine learning, and AI. 

With over $300M raised from top Silicon Valley investors, we are on a mission to power the data productivity of our customers and the world.

We are passionate about doing things in a smart, considerate way. We’re honoured to be named a great place to work for several years running by multiple industry research firms. 

We are dual headquartered in Manchester, UK and Denver, Colorado.

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 are interested in Matillion but don't see a suitable role, please email talent@matillion.com.

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.