Java Developer creating scalable backend applications with Java and Spring Boot for fintech startup. Collaborating in agile teams to enhance a digital finance product.
About the role
- Senior Software Engineer developing and maintaining AI-enabled voice applications for Sabio Group. Collaborating across teams to deliver reliable solutions for major financial services clients.
Responsibilities
- 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.
Requirements
- 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.
Benefits
- Pension Scheme
- Remote/Flexible work
- Life insurance
- Private healthcare
Job title
Job type
Experience level
Salary
Not specified
Degree requirement
Tech skills
Location requirements
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