Senior Python Engineer | Fully Remote | High-Growth Startup (AI / Data / Cloud) Join one of the most exciting early-stage startups of the year — backed by previous huge success, led by an exceptional founding team, and already showing incredible product-market fit. This is a rare opportunity to get in early, take real ownership, and build the foundations of a next-generation platform at scale. You’ll work with cutting-edge technology, solve complex challenges, and see your work have a direct impact every single day. The Role As a Senior Python Engineer, you’ll be a key part of a small, high-performing team building scalable backend systems and data-driven products. You’ll shape architecture decisions, drive engineering best practices, and collaborate across teams to deliver impactful features at speed. What You’ll Be Doing Designing and building reliable, high-performance services in Python (FastAPI, Flask, or Django) Leading architecture discussions and mentoring junior engineers Collaborating with product, data, and design teams to bring ideas to life Building scalable systems in the cloud (AWS / GCP / Azure) Driving quality through automation, testing, and CI/CD About You 5 years of hands-on Python engineering experience Strong grasp of backend development, APIs, and distributed systems Proven experience in fast-moving or high-growth startup environments Familiarity with cloud infrastructure and containerisation (Docker / Kubernetes) A problem-solver who thrives on autonomy and ownership What’s On Offer Fully remote role (UK / Europe timezone) Competitive salary meaningful equity A chance to work with a world-class founding team Real product ownership — your work will shape what’s next