Job description
About Numan
Founded in 2018, we’ve already grown to be a 200+ team distributed across the globe united by a singular mission: empowering people to take control of their health.
Numan is transforming health: we’ve built a cutting-edge platform that integrates diagnostics, medication, supplements, digital programmes, and doctor consultations. Giving people the tools they need to maximise life.
To deliver on our transformative mission, we are guided by our 5 company values:
• Patients first.
• Learn Fast.
• Own the quality.
• Succeed together.
• Care deeply.
Backed by top-tier investors, Numan is already having a positive impact on hundreds of thousands of patients here in the UK, and we want you to help us deliver this mission!
The role
We are seeking a talented Senior Backend AI Engineer to join our innovative AI team and help drive the future of digital health through the application of cutting-edge AI/ML solutions. You will work closely with various teams across Product, Clinical, and Engineering, to develop and deploy AI systems that enhance the quality and effectiveness of our health products and services.
You’ll be:
- Instrumental in designing our AI architecture and building a health platform that helps our patients take better care of themselves.
- Fine-tuning, evaluating, deploying, and scaling LLMs (e.g. GPT, LLaMA, Claude) and ML models in production-grade environments.
- Developing Retrieval-Augmented Generation (RAG) pipelines, embeddings infrastructure, and prompt engineering strategies.
- Monitoring model performance in real-world applications and iteratively improving based on feedback and new data.
- Building and maintaining backend systems and APIs to serve LLM responses efficiently, reliably, and securely.
- Mentoring, helping and guiding less experienced colleagues to grow as engineers.
- Working with people from various business functions in clarifying requirements and suggesting different and relevant technical approaches.
We’re looking for someone who:
- Wants to build products that can truly have a fundamental positive impact on people’s lives.
- Is a strong backend engineer with experience in designing and developing large-scale applications and designing end-to-end infrastructure.
- Demonstrates expert-level understanding of deploying and managing Large Language Models (LLMs), including setting up, fine-tuning, and scaling these models to support real-world applications.
- Is highly knowledgeable in technologies such as Retrieval-Augmented Generation (RAG).
- Has substantial experience building, optimising, and maintaining APIs specifically designed for AI functionalities, including a scalable AI model inference with robust error handling and security measures.
Our benefits include…
📈 - Share options.
🏖 - 25 days holiday, plus bank holidays (increasing to 30 the longer you stay with Numan).
🩺 - Health insurance with Vitality.
🧸 - Enhanced maternity and parental leave.
🐥 - Nursery benefit provided by YellowNest.
💼 - Employee assistance programme (access to therapy, financial planning and discounts).
⚖️ - Generous pension (includes both employee and employer contributions).
💻 - Flexible working options, including a dog friendly office in Farringdon.
📚 - Personal training and development budget via Learnerbly.
👟 - Wellhub membership, giving you access to over 2,000 locations in the UK.
☕️ - Free office snacks including breakfast items, soft drinks, tea and coffee.
🚲 - Cycle to work scheme.
🚆 - Season ticket loan.
% - Discount to Numan products for your friends and family.
🤲 - Paid volunteering days.
📅 - An additional 2 weeks off once you reach your 5th anniversary with Numan.
Diversity at Numan
At Numan, people are at the heart of who we are. We recognise and value the unique perspectives and experiences that individuals from all backgrounds bring.
We promote innovation and creativity, enabling us to tackle things from various viewpoints and are committed to equal opportunities and continuously strive to create a workplace where everyone feels respected, heard, and valued.
Embracing diversity isn’t just our goal; it’s our strength, driving us towards a more inclusive future.
