Backend Software Engineer

Architect the Future of AI-Native Advertising

Join a forward-thinking product squad at System1 to build the next generation of creative effectiveness tools. As a Backend Engineer, you'll move beyond traditional ticket-clipping to become a true product partner, using Python and advanced AI tools to build scalable services that predict marketing success for global brands. You will be responsible for the full lifecycle of backend services, from initial API design to deploying complex machine learning models into production.

Your Vibe Coding Toolkit

This isn't your average backend gig; you'll be engineering at the speed of thought in a high-trust environment. Key aspects include:

• Advanced AI Orchestration: Utilize Claude Code, custom subagents, and tailored workflows to amplify your output and maintain rigorous code quality.
• MCP Infrastructure: Design and build Model Context Protocol servers to bridge the gap between proprietary data and AI agent capabilities.
• Rapid Prototyping: Turn product discovery concepts into technical prototypes quickly, allowing for data-driven decisions before full-scale commits.
• Scalable Tech Stack: Work with cloud-native Python, spec-driven REST APIs, and modern infrastructure-as-code practices.

Growth & Impact

System1 champions an 'outcome over output' philosophy where engineers own the results, not just the repo. You'll work in a collaborative, remote-first UK environment, gaining deep experience in enterprise-grade security and SaaS scaling. If you are a 'missionary' developer ready to prove that AI-native development is the superior way to ship production-ready software, this is where you belong.