Senior Software Engineer

Senior Backend Python Engineer (Scale-Up / Platform Ownership) Salary: Up to £85,000 + Benefits Location: Edinburgh (Hybrid / Remote with ~1-2 days/month in Edinburgh) The Role In 30 Seconds: Tired of being a ticket-taker in a rigid hierarchy? Want to actually shape architecture and influence product direction? We’re a fast-moving, data-heavy B2B SaaS scale-up looking for a Senior Backend Engineer to help lead the evolution of our core application and platform layer. Sitting in a small, highly senior engineering team, you won’t just be writing code—you’ll be defining domain boundaries, designing robust FastAPI services, and establishing modern, AI-agent-assisted engineering standards. Over time, this role offers a clear path into technical ownership of our Application / Platform domain. What You’ll Be Doing Shape Architecture: Design and build high-throughput backend services, APIs, and data integrations without working against a rigid pre-existing spec.Drive Domain Boundaries: Help transition our platform toward a clear, domain-based operating model (Data, Infrastructure, Application/Platform).Leverage AI Engineering: Work at the forefront of AI-assisted delivery—using tools like Claude Code and Cursor, setting guardrails, and reviewing agent-generated code for architectural soundness.Embrace Autonomy: Thrive in a fluid, fast-paced setup where you own outcomes end-to-end and bring constructive technical opinions. What We’re Looking For Core Tech Stack: Strong, production-grade Python and high-level FastAPI expertise.Data & Cloud: Practical experience with PostgreSQL, SQLAlchemy (or similar ORMs), AWS, and Docker.Architectural Judgement: Solid experience with API design, microservices/domain-oriented design, and integrating third-party platforms.Startup / Scale-Up DNA: Comfortable navigating ambiguity, moving fast, and taking initiative in small, senior teams.Modern Tooling Interest: Curiosity or hands-on experience using AI coding agents (Claude, Codex, Cursor) safely in production workflows. Why Apply? Real Ownership: Direct path to technical domain ownership without corporate red tape.Modern Stack & AI First: Be part of a forward-thinking team embracing AI-agent delivery standards.Flexible Hybrid Model: Work remotely with periodic in-person meetups (usually 1-2 times a month in Edinburgh) to collaborate and catch up.Competitive Package: Up to £85,000 base salary depending on experience.