Senior Technical Lead

Appnovation is a global, full-service digital partner that combines Strategy, Experience & Design, Engineering and Managed Services. We build digital solutions that deliver real impact today and serve as foundations for future growth. Bold ambition. Practical action. Endless possibilities.

As Technical Lead, you will be the senior .NET authority on a dedicated, cross-functional scrum team building a modern operational SaaS platform for K-12 education. The platform helps school divisions automate administrative workflows, manage information across their organization, and surface operational insight - which in practice means long-running, multi-step business processes, heavy integration between systems, and reporting that has to hold up under scrutiny from district administrators.

Your team operates as an embedded extension of the client's product and engineering organization, not as an external group receiving isolated tickets. It owns assigned product services end-to-end: analysis, planning, implementation, quality assurance, documentation, and release readiness. The client sets product direction and owns architecture and engineering standards; your team is accountable for converting prioritized objectives into production-ready functionality without needing day-to-day coordination. That means you will be working inside an established codebase and an established set of standards, influencing them through implementation plans and evidence rather than unilateral redesign.

This is a manager-level role. Alongside deep technical ownership, you will lead a team that includes embedded business analysis and QA capability - setting expectations, developing people, running sprint delivery, and representing the technical position directly to client stakeholders. Depth in C# and .NET Core is the primary bar for this role: you should be the person the team escalates to on runtime behaviour, async correctness, EF Core query performance, and service design. The platform is moving from pilot deployments toward general availability, so decisions you make need to survive real multi-tenant load.

Key Responsibilities:

• Leading a cross-functional scrum team - developers, business analysis, and QA - accountable end-to-end for assigned product services and feature areas
• Writing and reviewing production C# and .NET Core code daily, and setting the standard for what good looks like in the codebase
• Working within the client's established architecture and engineering standards, and influencing them through implementation plans and evidence rather than unilateral decisions
• Producing technical analysis and implementation plans for significant changes, ahead of development starting
• Designing Temporal workflow implementations - activity boundaries, retry and compensation strategy, idempotency, and workflow versioning
• Implementing event-driven integration against defined pub/sub contracts, and flagging where contracts need to change
• Implementing authorization against OpenFGA policies and Keycloak-backed OAuth 2.0 / OpenID Connect flows in a multi-tenant context
• Working across PostgreSQL transactional models and ClickHouse reporting data within the client's data architecture
• Diagnosing and resolving performance issues across the .NET stack - EF Core query plans, connection pooling, async/await misuse, memory and allocation behaviour
• Owning the team's sprint delivery - refinement, planning, review, and retrospective - without the client needing to act as delivery coordinator
• Ensuring merge requests are small and reviewable, peer review is substantive, and CodeRabbit and pipeline feedback is addressed rather than waved through
• Holding the team to a definition of done that includes requirements validation, automated test coverage, documentation, release readiness, and supportability
• Owning post-release stabilization and defect resolution for recently delivered work
• Escalating risks, dependencies, and missing business decisions early
• Line-managing and mentoring engineers - goal setting, performance feedback, career development, and technical onboarding
• Partnering with client product and engineering stakeholders on trade-offs, sequencing, and feasibility

What we are looking for

Must-Have:

• At least 8 years of professional software engineering experience, with the majority in C# and .NET in production environments
• Recognised depth in .NET Core and ASP.NET Core - you have owned non-trivial services end to end and can reason about the runtime, not just the framework surface
• Expert-level Entity Framework Core, including migrations, query performance tuning, and knowing when to drop to raw SQL
• Deep understanding of asynchronous and concurrent programming in .NET, including async/await pitfalls, c