Full Stack Software

QX Labs is looking for a full stack AI engineer with a strong software background to join our expanding team of AI experts.

We are an early-stage London-based startup building cutting-edge workflow and data automation products for enterprises. Our flagship product, Quantera () is a platform that transforms how financial firms and investment companies source deals and do research.

We're looking for a talented, product-minded AI engineer to join the team. You will be involved in building out our core products and will also play a pivotal role in developing new AI-powered products for our financial services customers. You will work directly with our founder, collaborating on product engineering, architecture, and execution. This is more than just a coding role; it's a chance to be a true builder in a dynamic startup environment, working at the forefront of applied AI.

This is a remote role with the flexibility to work full-time or part-time/contract with a view to transitioning to full-time in future.

Your responsibilities

• Collaborate closely with our founder on the technical development of the Quantera platform, as we productise new AI-powered tools and capabilities
• Design, develop, test, and deploy robust, scalable full-stack applications using Python, JavaScript (React/Next.js), and modern AI technologies
• Architect and implement solutions leveraging LLMs and their surrounding ecosystem (e.g., multi-agent systems, RAG, vector DBs, fine-tuning techniques)
• Actively research, experiment with, and integrate the latest AI advancements into our products, and proactively suggest improvements to enhance our generative AI capabilities
• Contribute to building the foundations of our engineering practices and infrastructure
• Implement strong testing and CI/CD practices that help us move with confidence in our AI system development

• Help shape the future product direction of QX Labs by exploring and prototyping new ideas

Is this you?

• Bachelor's or Master's degree in Computer Science, Engineering or equivalent practical experience
• 3+ years of professional experience in software engineering and AI/ML development.
• Strong technical foundation in Python and experience with modern web frameworks
• Frontend expertise with JavaScript frameworks, particularly with React and Next.js, building intuitive user interfaces
• AI enthusiast & practitioner , comfortable working with LLMs and related tools with a portfolio to demonstrate this
• AI ecosystem awareness – you have a genuine passion for applied AI and ML, actively follow the latest research, models, and tools, and can thoughtfully discuss their applications
• Product-oriented mindset – you care about the 'why' behind what you're building and are focused on delivering user value
• Able to articulate complex technical concepts clearly
• Able to work independently and effectively in a small, tight-knit team

Preferred skills

• Experience building scalable applications with LLMs using frameworks such as LangChain, HuggingFace etc.
• Depth of knowledge with RAG implementation and improvements
• Experience with database technologies (SQL, NoSQL, Vector DBs)
• Experience with DevOps practices and CI/CD pipelines

About the Founder

You'll be working directly with Jai, the founder of QX Labs. Jai brings a unique blend of technical and business experience. He started his career as a software engineer at a social analytics startup which was acquired in 2014. Subsequently, he was a management consultant at BCG, and in 2019 co-founded Seek Ventures, a global investment firm where he has deployed over $500m into software and internet businesses. Jai graduated top of his class in Engineering, Economics & Management from Oxford University.

Interested?

If you're excited by the challenge of building intelligent enterprise products and want to make a foundational impact at an early-stage AI startup, we'd love to hear from you.