Senior Software Engineer

Senior Software Engineer Up to £100k + 10% bonus Remote-first, occasional travel to London We're looking for a Senior Software Engineer with a strong product mindset to join a fast-growing AI and data scale-up building technology that provides high-quality human data to support the development and testing of AI systems. You'll work on products at the intersection of software, data and AI, where the quality of the technology directly impacts how organisations develop and improve AI. This isn't a role where you'll simply be handed requirements and asked to build them. You'll be encouraged to question assumptions, understand user needs and work closely with Product, Design and Engineering to build solutions that deliver real value. You'll join a cross-functional engineering team with ownership across the full product lifecycle - from shaping ideas through to building, deploying and supporting them in production. What you'll do as a Senior Software Engineer:

• Build and maintain scalable services using Python, TypeScript, AWS/GCP, serverless and containerised architectures.
• Work with Product, Design and Engineering to shape and deliver new features based on user needs.
• Own software through the full development lifecycle, including testing, deployment, monitoring and production support.
• Improve engineering and product decisions through observability, data and customer feedback. What We're Looking For:
• Strong commercial software engineering experience with a product mindset.
• Strong experience with Python and TypeScript/JavaScript.
• Experience building and supporting modern web applications in production.
• Experience with AWS/GCP, serverless or containerised architectures, and NoSQL databases.
• Strong engineering practices across testing, observability and continuous improvement, with the ability to challenge ideas and influence product decisions. What you'll get as a Senior Software Engineer:
• £100k salary + 10% bonus
• Remote-first working with occasional London travel.
• The opportunity to work on genuinely innovative products within the AI and data space.
• A collaborative, product-led engineering culture with a high level of autonomy.