Senior .NET Engineer

We are on the lookout for a Senior .NET Engineer to take charge of the backend migration of a mature Windows desktop application for FDIC Call Report preparation into a cloud-native, containerized architecture running on Kubernetes. This is a greenfield-on-legacy engagement: splitting a monolithic .NET Framework 4.8 / VB.NET codebase into five independently deployable ASP.NET Core services, while safeguarding every regulatory workflow that FDIC-supervised banks depend on at filing time.

Responsibilities

Drive the backend migration effort from a legacy monolithic desktop application toward a cloud-native, containerized architecture

Direct the splitting of the existing codebase into independently deployable backend services

Influence architectural choices and define the technical direction across the migration workstreams

Coach and support a small group of engineers, keeping the team aligned on standards, patterns, and delivery objectives

Partner with stakeholders to translate regulatory workflow requirements into scalable technical solutions

Design and construct backend services that handle multi-tenant scenarios with rigorous data isolation

Take an active role in code reviews and maintain high standards of code quality and maintainability

Identify and address technical risks throughout the migration lifecycle

Coordinate deployment activities and keep services running reliably in containerised environments

Push forward continuous improvement of engineering practices, tools, and delivery workflows

Requirements

A minimum of 3 years of hands-on professional experience in backend .NET engineering

Applied experience with legacy migration efforts that transition applications onto a new technology stack

Proven history of designing and delivering multi-tenant SaaS backends featuring per-tenant data isolation

Hands-on delivery of microservices running on Kubernetes

Senior-level fluency in C# and ASP.NET Core (Current)

Practical experience with Entity Framework Core, spanning global query filters, optimistic concurrency, and migration management

Working proficiency in PostgreSQL, including schema design, Row-Level Security, and multi-tenant patterns

Applied experience with OAuth 2.0 and OIDC server-side flows via Microsoft.Identity.Web, alongside JWT issuance and validation

Hands-on background with Docker and Kubernetes, including ownership of service manifests rather than merely consuming them

Practical experience with xUnit and Testcontainers for authoring integration tests against real databases

Solid VB.NET reading comprehension, with the ability to confidently trace and reason about legacy VB.NET code without needing to write new VB.NET

Fluent English communication at B2 level or higher, in both written and spoken forms

Nice to have

Experience setting up Auth0 or similar SAML/OIDC brokers for identity and access management

Awareness of AI Assistants for enhancing development activities and productivity

Working familiarity with Azure Pipelines for CI/CD automation

Understanding of Google Cloud Platform for cloud infrastructure and service operations

Practical exposure to Helm for managing Kubernetes application deployments

Hands-on background designing and constructing 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

We offer

International projects with top brands

Work with global teams of highly skilled, diverse peers

Healthcare benefits

Employee financial programs

Paid time off and sick leave

Upskilling, reskilling and certification courses

Unlimited access to the LinkedIn Learning library and 22,000+ courses

Global career opportunities

Volunteer and community involvement opportunities

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