AI Software Engineer

AI Software Engineer £80k-90k + Equity Options UK Remote | Full-time A well-funded startup is looking for an AI Software Engineer to build and improve systems that process complex data inputs for enterprise clients, delivering reliable, actionable insights. You'll work with a lean, experienced team who care about getting things right. What You'd Do * Own the full technical stack as an AI Software Engineer: data processing, routing logic, model integration, external service connections, and output assembly * Take features from concept to production and monitor real-world performance * Identify accuracy gaps and solve them across the stack (data quality, prompts, model selection, or replacing ML with logic where it makes sense) * Connect third-party services reliably and fail gracefully when they don't work * Create test suites and metrics that validate your changes * Handle client-specific configurations without creating maintenance nightmares * Get direct feedback from end users about how your work gets used What They're Looking For * 5+ years building software; substantial recent experience with production LLM systems * Strong Python skills (3.10+); comfortable building resilient, asynchronous workflows using cloud function frameworks * Experience building and deploying agentic systems using LLM abstraction layers, with hands-on work across multiple model providers (Gemini, Claude, etc.) * Proficiency with vector embeddings and retrieval optimization for AI pipelines * Experience containerising applications (Docker) and managing infrastructure-as-code (Terraform or similar) * Comfortable working across cloud platforms (Azure, AWS, GCP) and integrating with services/APIs written in other languages (particularly Node.js) * You have opinions about what should be handled by models vs. what belongs in code * You've written test data, defined success metrics, and seen them catch real issues * You validate your own work critically before others do * You investigate what data the model is actually seeing before tweaking prompts * You identify gaps and propose solutions without needing a task list * Able to lead technical discussions with enterprise customers — explaining complex AI architecture with clarity and confidence Team \& Environment * Fully remote, small core team * Focus on shipping incrementally and learning from real usage * Individual ownership of projects from design through deployment * Lightweight processes that stay out of your way * Regular input from the people who depend on your code Interested? Get in touch and let's discuss what they're building and what the AI Software Engineer role involves.