Senior Technical Lead, C# / .NET
OSI Digital1 day ago
Minneapolis, MN, USAStaff+
Responsibilities
- Own the technical direction, health, stability, and evolution of the customer’s POS codebase.
- Lead incremental modernization from .NET Framework toward modern .NET without a big-bang rewrite.
- Review changes for technical risk, anticipate production failures, and ensure safe releases.
- Coordinate technical decisions across onshore and offshore developers.
- Mentor senior engineers and establish standards for code, documentation, and process.
- Work directly with customer stakeholders, including onsite visits, to translate business needs into realistic technical plans.
- Continue writing code while leading design reviews, technical planning, and decisions about platform risk.
Requirements
- Deep expertise in C# and .NET Framework 4.x.
- Hands-on experience migrating to .NET 6, .NET 8, or .NET 10, including multi-targeting, netstandard2.0, and resolving package conflicts.
- Strong WCF skills, including reading bindings, configurations, and contracts and debugging services.
- Experience with SQL Server and ADO.NET, including stored procedures and DataSets.
- Experience with MSBuild, NuGet, PowerShell build scripting, and Azure DevOps pipelines.
- A proven record of shipping safely to production.
- Clear written communication with onshore and offshore teams and client stakeholders.
- Willingness to work onsite with the customer in Richfield, Minnesota as needed.
- Preferred experience with Windows Workflow Foundation 4 and XAML, retail POS or payments including EMV, tender, store-and-forward, and PCI DSS, Angular, CoreWCF, ASP.NET Core, OpenID Connect, Checkmarx remediation, and TeamCity.
Benefits
- Full-time hybrid position in the Greater Minneapolis/St. Paul area.
- Long-term opportunity to grow with the platform and team.
- Onsite customer visits in Richfield, Minnesota as needed.
Tech Stack
Categories
About OSI Digital
OSI Digital is an IT services firm that designs, implements, and supports enterprise applications, data analytics, and cloud integrations for mid‑market and large enterprises. Offerings span ERP and CRM integration (e.g., SAP, Oracle, Salesforce), custom application development, and data/AI delivered through consulting and managed services. Founded in 1993 and headquartered in Calabasas, California, the privately held company operates globally across the Americas, EMEA, and APAC.