We are searching for a Lead .NET Engineer to take ownership 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: breaking down a monolithic .NET Framework 4.8 / VB.NET codebase into five independently deployable ASP.NET Core services, all while preserving every regulatory workflow FDIC-supervised banks rely on at filing time.
Responsibilities
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Steer the backend migration initiative from a legacy monolithic desktop application toward a cloud-native, containerized architecture
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Guide the breakdown of the existing codebase into independently deployable backend services
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Shape architectural decisions and set the technical direction across the migration workstreams
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Support and mentor a small group of engineers, keeping the team aligned on standards, patterns, and delivery targets
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Work with stakeholders to convert regulatory workflow requirements into scalable technical solutions
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Craft and build backend services that address multi-tenant scenarios with strict data isolation
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Actively engage in code reviews and uphold high standards of code quality and maintainability
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Spot and mitigate technical risks throughout the migration lifecycle
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Orchestrate deployment activities and ensure services run dependably in containerised environments
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Drive continuous improvement of engineering practices, tools, and delivery workflows
Requirements
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No less than 5 years of applied professional experience in backend .NET engineering, with proven experience guiding a team of 2 to 4 engineers
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Hands-on background with legacy migration initiatives that move applications onto a new technology stack
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Track record of designing and delivering multi-tenant SaaS backends with per-tenant data isolation
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Practical delivery of microservices operating on Kubernetes
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Senior-level command of C# and ASP.NET Core (Current)
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Applied experience with Entity Framework Core, covering global query filters, optimistic concurrency, and migration management
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Working expertise in PostgreSQL including schema design, Row-Level Security, and multi-tenant patterns
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Hands-on experience with OAuth 2.0 and OIDC server-side flows through Microsoft.Identity.Web, together with JWT issuance and validation
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Applied background with Docker and Kubernetes, including ownership of service manifests rather than simply consuming them
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Practical use of xUnit and Testcontainers to author integration tests against real databases
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Strong VB.NET reading comprehension, with the ability to fluently follow and reason about legacy VB.NET code without needing to write new VB.NET
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Confident English communication at B2 level or higher, in both writing and speech
Nice to have
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Background configuring Auth0 or comparable SAML/OIDC brokers for identity and access management
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Awareness of AI Assistants for boosting development activities and productivity
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Working familiarity with Azure Pipelines for CI/CD automation
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Understanding of Google Cloud Platform for cloud infrastructure and service operations
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Practical exposure to Helm for handling Kubernetes application deployments
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Hands-on experience designing and building REST APIs
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Familiarity with SAML for federated authentication scenarios
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Awareness of XBRL for structured business reporting use cases
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Experience with OpenTelemetry SDK instrumentation for observability and tracing
We offer
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International projects with top brands
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Work with global teams of highly skilled, diverse peers
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Healthcare benefits
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Employee financial programs
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Paid time off and sick leave
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Upskilling, reskilling and certification courses
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Unlimited access to the LinkedIn Learning library and 22,000+ courses
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Global career opportunities
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Volunteer and community involvement opportunities
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EPAM Employee Groups
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Award-winning culture recognized by Glassdoor, Newsweek and LinkedIn
EPAM is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, sexual orientation, gender identity or expression, disability, protected veteran status, or any other characteristic protected by applicable law.
