Lead .NET Engineer

We are looking for aLead .NET Engineerto own the backend migration of a mature Windows desktop application for FDIC Call Report preparation to a cloud-native, containerized architecture on Kubernetes.

This is a greenfield-on-legacy engagement: decomposing a monolithic .NET Framework 4.8 / VB.NET codebase into five independently deployable ASP.NET Core services, while preserving every regulatory workflow FDIC-supervised banks depend on at filing time.

Responsibilities

• Lead the backend migration effort from a legacy monolithic desktop application to a cloud-native, containerized architecture
• Oversee the decomposition of the existing codebase into independently deployable backend services
• Drive architectural decisions and shape the technical direction across the migration workstreams
• Guide and mentor a small team of engineers, ensuring alignment on standards, patterns, and delivery goals
• Collaborate with stakeholders to translate regulatory workflow requirements into scalable technical solutions
• Design and implement backend services that support multi-tenant use cases with strict data isolation
• Take an active part in code reviews and enforce high standards of code quality and maintainability
• Identify and mitigate technical risks throughout the migration lifecycle
• Coordinate deployment activities and ensure services operate reliably in containerised environments
• Contribute to continuous improvement of engineering practices, tools, and delivery workflows

Requirements

• At least 5 years of professional relevant experience in backend .NET engineering, with demonstrable experience leading a team of 2 to 4 engineers
• Practical experience with legacy migration efforts moving applications to a new technology stack
• Background designing and delivering multi-tenant SaaS backends with per-tenant data isolation
• Hands-on delivery of microservices running on Kubernetes
• Senior-level proficiency in C# and ASP.NET Core (Current)
• Applied experience with Entity Framework Core, including global query filters, optimistic concurrency, and migration management
• Working knowledge of PostgreSQL covering schema design, Row-Level Security, and multi-tenant patterns
• Practical experience with OAuth 2.0 and OIDC server-side flows using Microsoft.Identity.Web, along with JWT issuance and validation
• Hands-on experience with Docker and Kubernetes, including ownership of service manifests rather than only consuming them
• Applied background with xUnit and Testcontainers for authoring integration tests against real databases
• Strong VB.NET reading comprehension, with the ability to fluently trace and reason about legacy VB.NET code without needing to write it
• Confident English communication at B2 level or higher, both written and spoken

Nice to Have

• Experience configuring Auth0 or equivalent SAML/OIDC brokers for identity and access management
• Familiarity with AI Assistants for supporting development activities and productivity
• Working knowledge of Azure Pipelines for CI/CD automation
• Awareness of Google Cloud Platform for cloud infrastructure and service operations
• Practical exposure to Helm for managing Kubernetes application deployments
• Hands-on experience designing and building REST APIs
• Familiarity with SAML for federated authentication scenarios
• Awareness of XBRL for structured business reporting use cases
• Experience with OpenTelemetry SDK instrumentation for observability and tracing