Development Team Lead

About the role

London Stock Exchange Group (LSEG) seeks a Development Team Lead (.NET) to guide a team building enterprise applications on Microsoft .NET. The role blends deep .NET expertise with people leadership, Agile delivery, and cross‑functional collaboration. Responsibilities include leading design and development of C#, VB.NET, ASP.NET Core applications, modernizing legacy VB.NET code, enforcing code quality, mentoring developers, facilitating sprint ceremonies, coordinating QA and DevOps, driving testing practices, ensuring performance and security, and improving CI/CD pipelines. The ideal candidate has 6+ years .NET development experience, 2+ years people‑leadership, strong C# skills, experience with REST APIs, microservices, Git, Azure DevOps, Agile, and a proven track record of delivering complex initiatives.

What you’ll do

• Lead design/development of .NET applications (C#, VB.NET, ASP.NET Core)
• Modernize legacy VB.NET apps to C#/.NET Core
• Enforce code reviews, coding standards, SOLID
• Break down technical requirements into stories/tasks
• Align technical patterns with architects
• Mentor developers, conduct 1:1s, support career growth
• Facilitate sprint planning, daily stand‑ups, retrospectives
• Coordinate QA, DevOps, release readiness
• Drive unit/integration/API testing, shift‑left practices
• Ensure performance, resilience, security compliance
• Improve CI/CD pipelines, release automation
• Root cause analysis, production incident resolution
• Monitor app health with Application Insights, dashboards
• Collaborate with Product Owners, DevOps, QA, Architecture, Security

What you’ll bring

• 6+ yrs .NET dev (.NET Framework, .NET Core)
• 2+ yrs people leader role
• Strong C# expertise, VB.NET knowledge
• Build REST APIs, microservices ASP.NET Core/Web API
• Proficient Git, CI/CD (Azure DevOps/GitHub Actions), unit testing
• Agile Scrum/Kanban facilitation
• Lead teams, influence architecture, deliver complex initiatives
• Excellent communication, facilitation, problem‑solving

Nice to have

• Multi‑team shared services experience
• Observability logs, metrics, tracing, performance tuning
• Relational/NoSQL data stores, messaging, event‑driven patterns
• DevOps IaC (Bicep, ARM, Terraform)
• Certifications PSM I/II, CSM, PMI‑ACP, Azure Developer/Architect

Skills