We have an outstanding Contract to Hire position for a Senior .Net Developer to join a leading Company located in the Costa Mesa, CA surrounding area.

Pay Rate: $65-70/hr

We're seeking a Senior .NET Developer to architect, build, and maintain high-performing enterprise applications that power our auctions, gallery systems, and e-commerce operations. This is a high-impact role within a small, agile development team, ideal for someone who enjoys solving complex problems and contributing to the strategic evolution of a legacy-rich brand in a modern, digital-first world.

Job Responsibilities:

Architect, develop and maintain secure, scalable, and high-performance web applications using C# and the .NET ecosystem (.NET Core/.NET 6+).
Lead design and development of API integrations, internal platforms, and customer-facing systems including our auction portal and gallery inventory tools.
Collaborate with product owners, designers, and other developers to deliver elegant technical solutions that meet business needs.
Optimize SQL Server databases, write performant queries, and manage data access layers (Entity Framework, Dapper, etc.).
Maintain and evolve legacy .NET systems where needed while leading modernization efforts toward microservices or modular architecture.
Implement unit and integration tests, CI/CD pipelines, and best practices in version control (Git).
Conduct code reviews and mentor junior developers.
Monitor system performance and resolve production issues quickly and effectively.
Contribute to technical documentation and internal development standards.

Basic Hiring Criteria:

5+ years of experience developing applications using .NET (C#), with a strong grasp of full-stack development.
Deep experience with ASP.NET Core, .NET Framework, MVC, RESTful APIs, and SQL Server.
Familiarity with front-end technologies (HTML5, JavaScript + TypeScript, CSS,.
Strong knowledge of architectural patterns (MVC, layered architecture, microservices, Domain-Driven Design).
Experience working in Agile/Scrum environments.
Excellent problem-solving and communication skills.
Familiarity with cloud services (Azure preferred) and DevOps tooling (CI/CD pipelines, containers, monitoring).

Desired Qualifications:

Bachelor's degree in Computer Science, Software Engineering, or a related field
Experience in auction platforms, digital marketplaces, or e-commerce.
Background with payment gateways, shipping APIs, and digital asset management tools.
Familiarity with Razor Pages, and modern UI frameworks (any one of React, Angular, Vue).
Appreciation for the collectibles or numismatics industry.

Benefits offered vary by contract. Depending on your temorary assignment, benefits may include direct deposit, free career counseling services, 401(k), select paid holidays, short-term disability insurance, skills training, employee referral bonus, and affordable medical coverage plan, and DailyPay (in some locations). For a full description of benefits available to you, be sure to talk with your recruiter.

VEVRAA Federal Contractor / Request Priority Protected Veteran Referrals / Equal Opportunity Employer / Veterans / Disabled

To read our Candidate Privacy Information Statement, which explains how we will use your information, please visit http://www.tadpgs.com/candidate-privacy/ or https://pdsdefense.com/candidate-privacy/

The Company will consider qualified applicants with arrest and conviction records in accordance with federal, state, and local laws and/or security clearance requirements, including, as applicable:

The California Fair Chance Act
Los Angeles City Fair Chance Ordinance
Los Angeles County Fair Chance Ordinance for Employers
San Francisco Fair Chance Ordinance

TAD PGS, Inc

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Senior .Net Developer