Senior Python Engineer

Senior Python Engineer – AI & Microservices £450 PD (Outside IR35) | 3-to-6-month Contract | 2 days onsite in London (Hybrid) | ASAP Start Our trusted technology partner is developing innovative products and is looking for an experienced Senior Python Engineer / Back End Developer to join a fast-moving team. You will develop Python microservices, scalable services, voice chat, and data pipelines, using AI technologies including ASR, TTS, and LLMs. The ideal candidate will have strong Python skills, a pragmatic delivery-focused approach, and the ability to take ownership in a fast-paced, evolving environment. Key Responsibilities: Develop and maintain scalable Python services, microservices, voice chat, and data pipelines. Work with the Tech Lead and wider team on architecture, technical decisions, and solution design. Collaborate with product, data science, QA, design, and subject matter experts to deliver new features. Ensure applications meet high standards for performance, scalability, reliability, and quality. Contribute to code reviews, technical discussions, requirements, and user stories. Take ownership of technical issues and support an end-to-end DevOps approach. Mentor less experienced developers and share technical knowledge. Stay current with developments in AI, cloud engineering, and language assessment. Key Skills & Experience: Strong commercial Python development experience, including object-oriented and functional programming. Strong experience with FastAPI, Pydantic, SQLAlchemy, Alembic, Pytest, and type checking. Experience with Pandas, NumPy, Jupyter, OpenTelemetry, Git/GitHub, GitHub Actions, and Docker. Experience developing microservices and/or Lambda-based solutions. Strong experience with PostgreSQL. Experience working with AI/ML technologies, particularly ASR, TTS, LLMs, or related tooling, is highly desirable. AWS, Terraform, Kubernetes, Hugging Face, PyTorch/TensorFlow, or Generative AI tooling would be advantageous. Strong communication, stakeholder management, analytical, and problem-solving skills. Comfortable taking ownership and working in a fast-paced, constantly evolving environment. This is an excellent opportunity for a Senior Python Engineer / Back End Developer to work on a cutting-edge product using modern microservices, cloud, and AI technologies within a fast-paced, collaborative team. One stage MS Teams Interview