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Senior Dot Net Developer

Not Disclosed

Job Description & Details

With digital transformation accelerating, seasoned .NET developers are in high demand to build robust enterprise solutions. This Senior Dot Net Developer role in Lansing offers a hybrid schedule and the chance to work with both legacy .NET Framework and cutting‑edge .NET Core/8 technologies. Joining this team provides a platform to showcase your 9+ years of expertise while driving critical data integrations with SQL Server and SSIS.

Job Summary

We are seeking a Senior .NET Developer to design, develop, and maintain enterprise‑grade applications using C# and the .NET ecosystem (Framework 4.8, .NET Core, .NET 8/10). The role involves deep SQL Server work, including SSIS package creation, complex queries, stored procedures, and performance tuning. The candidate will work onsite two days a week in Lansing and collaborate virtually with the broader development team.

Top 3 Critical Skills Table

Skill Why it's critical Mastery Level
.NET Development (C#, .NET Framework & .NET Core) Core language and platform for building all application layers Senior
SQL Server & SSIS Enables data integration, ETL, and high‑performance data access essential for enterprise apps Senior
Modern .NET Versions (e.g., .NET 8/10) Future‑proofs solutions and leverages performance improvements Senior

Interview Preparation

  1. Explain the differences between .NET Framework 4.8 and .NET 8/10.
    What the interviewer is looking for: Understanding of runtime changes, cross‑platform support, performance gains, and migration considerations.
  2. Describe how you would design an SSIS package to handle incremental data loads.
    What the interviewer is looking for: Knowledge of Change Data Capture, package configurations, error handling, and performance optimization.
  3. Walk through a complex stored procedure you wrote to improve query performance.
    What the interviewer is looking for: Ability to use indexing, execution plans, set‑based operations, and troubleshooting techniques.
  4. How do you manage dependency injection and service lifetimes in a large .NET Core application?
    What the interviewer is looking for: Familiarity with built‑in DI container, scoped vs. singleton services, and best practices for testability.
  5. What strategies do you use for migrating a legacy .NET Framework app to .NET Core/8?
    What the interviewer is looking for: Planning steps, compatibility assessment, code refactoring, and handling third‑party libraries.

Resume Optimization

  • Senior .NET Developer
  • C#
  • .NET Framework 4.8
  • .NET Core / .NET 8
  • SQL Server 2019
  • SSIS
  • Stored Procedures
  • Performance Optimization
  • Enterprise Application Development
  • Hybrid On‑site/Remote

Application Strategy

When reaching out to the recruiter, send a concise email that opens with a friendly greeting, attaches your updated resume, and clearly highlights your top relevant skills. Make sure to mention related skills you possess, such as C#/.NET development, SQL Server/SSIS expertise, and experience with modern .NET versions. Reference a recent project where you delivered enterprise‑scale functionality or optimized data pipelines, and explain how those achievements align with the responsibilities in this role.

Career Roadmap

Current Role Typical Experience Core Focus Next Position
Senior .NET Developer 8‑10 years Enterprise app architecture, performance tuning, data integration Lead .NET Engineer / Technical Architect