Sabio Group is a trusted expert in AI, Contact Centre and Data. We design, build and run automation‑led customer experiences for leading brands, combining deep domain expertise with modern engineering and a consulting mindset. We’re collaborative, curious and outcomes‑driven, and we invest in people who want to learn and grow in a supportive, inclusive environment. Role Purpose We are looking for a Senior Software Engineer (Python) to join our Software Engineering team within the AI Practice. This role will be instrumental in engineering, enhancing and supporting a real‑time voice application underpinned by Generative AI technologies. You will contribute across both project delivery and production support , including participation in an out‑of‑hours callout rota . The role focuses on building complex asynchronous systems using modern Python frameworks, integrating enterprise platforms, and ensuring reliable operation of a mission‑critical solution for a major financial services client. This role is customer‑facing and will include direct engagement with client technical teams, solution architects and delivery stakeholders. Design, build and maintain real‑time voice and AI‑enabled applications using Python and modern async frameworks. Develop and optimise backend microservices using FastAPI, Uvicorn, Asyncio, Pydantic and SQLAlchemy. Engineer and maintain REST API integrations with external enterprise systems. Implement observability using OpenTelemetry and Azure Application Insights. Leverage Microsoft Azure services including App Service, Azure Cache for Redis, Azure Speech Services, Azure OpenAI (PTU), Microsoft SQL, Key Vault and Storage Accounts. Contribute to CI/CD pipelines using Azure DevOps. Participate in an out‑of‑hours callout rota to support critical customer operations. Provide technical guidance to customers, including troubleshooting, solution walkthroughs and implementation support. Collaborate with cross‑functional Sabio teams across AI, Engineering and Delivery. Maintain high code quality using Pytest, Alembic migrations and peer review practices. Essential Strong commercial experience as a Senior Python Developer / Software Engineer. Expertise in asynchronous Python and building complex async architectures. Strong hands‑on experience with: FastAPI, Uvicorn, Asyncio, SQLAlchemy, Pydantic, Alembic, Pytest WebSocket‑based communication patterns REST API design and integration Experience delivering in Microsoft Azure environments, including: App Service, Key Vault, Azure SQL Azure Speech Services, Azure OpenAI Storage Accounts, Redis Cache Experience operating production systems with structured observability and monitoring. Ability to engage effectively with customers, including technical workshops and solution design discussions. Ability to balance both project delivery work and ongoing support responsibilities. Nice to Have Experience designing or engineering voice‑based user experiences . Background working with Financial Services or Customer Service organisations. Exposure to Vue.js or other modern JavaScript frameworks. Understanding of large‑scale, event‑driven or real‑time transactional systems. This is your chance to join and friendly and passionate team that will motivate you to learn and develop your career in the company. Benefits may include Pension Scheme Remote/Flexible work Life insurance Private healthcare Plus many more! ( Benefits are dependant on your base location.) The Small Print Strictly No Agencies; any submission of resumes without prior request from Sabio Group will not be deemed as an introduction and therefore will not warrant an introduction fee. All applicants must have the right to work in the territory to which the role relates (UK & EU). Sabio Group are unable to offer sponsorship on any roles advertised.