Senior Developer - Python, .NET, JavaScript / React - remote in City of London

Proven experience as a senior developer, full-stack developer, software engineer or product engineer in a high-growth product, consultancy or customer delivery setting.

Expertise in Python, .NET and JavaScript/React, with a strong understanding of microservices, scalable APIs and modern application architecture.

Hands-on familiarity with Azure cloud computing, containerisation using Docker, orchestration using AKS, and deployment automation using GitHub, GitHub Actions and Bicep IaC.

Proficiency in Visual Studio Code, ideally with tools like GitHub Copilot or other AI-assisted development extensions.

An AI-native approach with proven experience or strong hands-on interest in Azure's AI stack, including Azure AI Foundry, Azure OpenAI, AI Search, agents and RAG patterns.

Strong practical knowledge of databases, including SQL and NoSQL platforms, schema design, data access patterns, query performance and secure data handling.

Ability to design, build and review maintainable code while following agreed coding standards, architectural guidelines and secure development practices.

Strong understanding of the SDLC - plan, design, build, implement, test and deploy - with the maturity to work independently while staying aligned with the wider team.

Excellent communication skills, with the ability to translate complex technical issues for engineering, business and customer stakeholders.

An excellent understanding of the development fundamentals - version control (Git), SDLC, agile methodologies, testing, debugging, code review, CI/CD, RESTful APIs, databases, query optimisation, operating systems, networking, security best practice, authentication and authorisation, encryption, cloud computing, containerisation, orchestration, infrastructure as code, monitoring, logging, performance optimisation, scalability and documentation.

Hands-on experience working in agile teams, with deep familiarity in CI/CD workflows, branching strategies, pull requests and automated testing using tools such as Playwright.

Experience with Microsoft Fabric, Lakehouse architecture, data pipelines or analytics engineering would be beneficial, especially where data needs to be prepared for reporting, automation or AI use cases.

Role

• Build and ship production features across the platform, working across APIs, services, user interfaces, data integrations and AI-agent workflows.
• Develop scalable, secure, cloud-native software using Python, .NET and JavaScript/React, with strong attention to code quality, maintainability and performance.
• Work across the Azure stack, including Azure OpenAI, Azure AI Foundry, Azure AI Search, Azure Functions, Azure SQL, Cosmos DB, AKS, storage services and related platform components.
• Contribute to AI and RAG features, including document ingestion, metadata enrichment, retrieval workflows, grounding, reasoning flows, template generation and agent orchestration.
• Support Microsoft Fabric and data engineering work where required, including Lakehouse patterns, pipelines, structured data preparation, semantic models and analytics-ready data layers.
• Design and implement integrations with customer systems such as SharePoint, Microsoft 365, SQL databases, APIs, SaaS platforms and line-of-business applications.
• Write clean, tested, secure code and participate actively in pull requests, code reviews, branching strategies and release processes.
• Implement and maintain automated testing, including unit, integration, end-to-end and Playwright-based test automation where appropriate.
• Collaborate cross-functionally with Product, AI, Data and Client Delivery teams to turn customer needs and product ideas into robust production features.
• Work directly with customers and subject matter experts when needed to clarify requirements, troubleshoot issues and explain technical options clearly.
• Contribute to architecture discussions, technical documentation, estimates, implementation plans and reusable engineering patterns.