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Contractual Net Core Developer Jobs in Silver Spring, MD

Serigor, Inc.

Senior .NET Developer (Onsite)

Columbia, MD · On-site

$53.75 - $70.75/hr

NET modernization and migration initiatives, including AI-assisted code conversion efforts ... NET Core * .NET Framework / .NET Core / .NET 6+ * Web APIs / RESTful Services * gRPC Services

AVER

Senior .Net Applications Developer

Washington, DC · On-site

$108K - $149K/yr

NET-based applications. The Senior .NET Application Developer will work primarily within the ... NET Core, Entity Framework Core, SQL Server and Oracle, RESTful web services, authentication and ...

AVER

Senior .Net Applications Developer

Washington, DC · On-site

$108K - $149K/yr

NET-based applications. The Senior .NET Application Developer will work primarily within the ... NET Core, Entity Framework Core, SQL Server and Oracle, RESTful web services, authentication and ...

AVER

Senior .Net Applications Developer

Washington, DC · On-site

$108K - $149K/yr

NET-based applications. The Senior .NET Application Developer will work primarily within the ... NET Core, Entity Framework Core, SQL Server and Oracle, RESTful web services, authentication and ...

NetImpact Strategies

.NET Developer

Herndon, VA · On-site +1

$49.50 - $65.50/hr

NET Developer to join our talented team supporting the development, modernization, and operation of ... NET 10 / .NET Core, REST APIs, PostgreSQL on AWS RDS, RabbitMQ, AWS SQS, Docker, Kubernetes managed ...

NetImpact Strategies

.NET Developer

Herndon, VA · On-site

$49.50 - $65.50/hr

NET Developer to join our talented team supporting the development, modernization, and operation of ... NET 10 / .NET Core, REST APIs, PostgreSQL on AWS RDS, RabbitMQ, AWS SQS, Docker, Kubernetes managed ...

NetImpact Strategies

.NET Developer

Herndon, VA

$49.50 - $65.50/hr

NET Developer to join our talented team supporting the development, modernization, and operation of ... NET 10 / .NET Core, REST APIs, PostgreSQL on AWS RDS, RabbitMQ, AWS SQS, Docker, Kubernetes managed ...

Northramp LLC

Software Developer

Washington, DC · On-site +1

NET Core web applications supporting federal programs. • Engage directly with federal clients to ... NET. • Configure and support CI/CD pipelines using GitHub Actions and Azure DevOps tooling. • ...

Northramp LLC

Software Developer

Washington, DC

NET Core web applications supporting federal programs. Engage directly with federal clients to ... NET. Configure and support CI/CD pipelines using GitHub Actions and Azure DevOps tooling.

Northramp LLC

Software Developer

Washington, DC · Remote

NET Core web applications supporting federal programs. * Engage directly with federal clients to ... NET. * Configure and support CI/CD pipelines using GitHub Actions and Azure DevOps tooling.

Bridge Core (BCore)

Network Engineer

Chantilly, VA · On-site

$170K - $185K/yr

Network infrastructure engineering services are comprised of core infrastructure, voice and video ... and contractual requirements. This is not a guarantee. * Benefits include Health/Dental/Vision ...

Bridge Core (BCore)

Network Engineer

Chantilly, VA · On-site

$170K - $185K/yr

Network infrastructure engineering services are comprised of core infrastructure, voice and video ... and contractual requirements. This is not a guarantee. * Benefits include Health/Dental/Vision ...

Bridge Core (BCore)

Network Engineer

Chantilly, VA · On-site

$170K - $185K/yr

Network infrastructure engineering services are comprised of core infrastructure, voice and video ... and contractual requirements. This is not a guarantee. * Benefits include Health/Dental/Vision ...

Bridge Core (BCore)

Network Engineer

Chantilly, VA · On-site

$170K - $185K/yr

Network infrastructure engineering services are comprised of core infrastructure, voice and video ... and contractual requirements. This is not a guarantee. * Benefits include Health/Dental/Vision ...

Bridge Core (BCore)

Network Engineer

Chantilly, VA

$170K - $185K/yr

Network infrastructure engineering services are comprised of core infrastructure, voice and video ... and contractual requirements. This is not a guarantee. * Benefits include Health/Dental/Vision ...

Bridge Core (BCore)

Network Engineer

Chantilly, VA

$170K - $185K/yr

Network infrastructure engineering services are comprised of core infrastructure, voice and video ... and contractual requirements. This is not a guarantee. * Benefits include Health/Dental/Vision ...

Bridge Core (BCore)

Network Engineer

Chantilly, VA · On-site

$170K - $185K/yr

Network infrastructure engineering services are comprised of core infrastructure, voice and video ... and contractual requirements. This is not a guarantee. * Benefits include Health/Dental/Vision ...

Bridge Core (BCore)

SME Network Engineer

Chantilly, VA

$195K - $225K/yr

Working knowledge and expertise using the customer's core appliances and services to include their ... and contractual requirements. This is not a guarantee. * Benefits include Health/Dental/Vision ...

Bridge Core (BCore)

Cloud DevOps Engineer

Reston, VA · On-site

$195K - $230K/yr

Overview Cloud DevOps Engineer Hybrid / Reston, VA TS/SCI with Poly At Bcore, our strength comes ... and contractual requirements. This is not a guarantee. * Benefits include Health/Dental/Vision ...

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Showing results 41-60

All JobsContractual Net Core Developer JobsContractual Net Core Developer Jobs in Silver Spring, MD

Contractual Net Core Developer information

See Silver Spring, MD salary details

$14

$55

$74

How much do contractual net core developer jobs pay per hour?

As of Sep 10, 2026, the average hourly pay for contractual net core developer in Silver Spring, MD is $55.55, according to ZipRecruiter salary data. Most workers in this role earn between $47.98 and $63.37 per hour, depending on experience, location, and employer.

What is the difference between Contractual Net Core Developer vs Contractual ASP.NET Developer?

AspectContractual Net Core DeveloperContractual ASP.NET Developer
Required CredentialsProficiency in .NET Core, C#, and related frameworksProficiency in ASP.NET, C#, and .NET Framework
Work EnvironmentTypically remote or on-site, project-based roles in software developmentSimilar environments, often in enterprise or web application projects
Employer & Industry UsageUsed in modern, cross-platform web applications and microservicesCommon in legacy enterprise web applications and intranet systems

The main difference is that Contractual Net Core Developers focus on building cross-platform, high-performance applications using .NET Core, while Contractual ASP.NET Developers work primarily with the traditional ASP.NET framework for web development. Both roles require C# skills but target different frameworks and project types.

What are popular job titles related to Contractual Net Core Developer jobs in Silver Spring, MD?

For Contractual Net Core Developer jobs in Silver Spring, MD, the most frequently searched job titles are:

What job categories do people searching Contractual Net Core Developer jobs in Silver Spring, MD look for?

The top searched job categories for Contractual Net Core Developer jobs in Silver Spring, MD are:

Contractual Net Core Developer jobs near you
Infographic showing various Contractual Net Core Developer job openings in Silver Spring, MD as of August 2026, with employment types broken down into 1% As Needed, 85% Full Time, 12% Part Time, and 2% Contract. Highlights an 92% Physical, 3% Hybrid, and 5% Remote job distribution, with an average salary of $115,536 per year, or $55.5 per hour.

Senior .NET Developer (Onsite)

Columbia, MD • On-site

Serigor, Inc.
Construction • 51 - 200 employees
Learn more about Serigor, Inc.external

$53.75 - $70.75/hr

Full-time

Re-posted 17 days ago

Job description

Job Title: Senior .NET Developer (Onsite)
Location: Columbia, MD
Job Type: Full-Time
Job Description:
  • We are seeking a highly experienced Senior .NET Developer to support large-scale enterprise modernization initiatives focused on transforming legacy Mainframe applications into modern, cloud-ready .NET platforms.
  • The ideal candidate will have strong expertise in enterprise Microsoft technologies, distributed systems, APIs, database modernization, DevOps, and cloud platforms. This role involves working closely with modernization teams to support application conversion, remediation, integration, testing, and cloud enablement efforts.
  • Experience supporting Mainframe modernization, automated code conversion, and enterprise transformation programs is highly preferred.

Key Responsibilities:
  • Design, develop, enhance, and support enterprise-grade applications using modern .NET technologies
  • Support Mainframe-to-.NET modernization and migration initiatives, including AI-assisted code conversion efforts
  • Refactor and optimize converted code to align with modern .NET engineering standards and architecture principles
  • Develop RESTful APIs, gRPC services, backend services, batch jobs, and distributed integration solutions
  • Build scalable, maintainable, and high-performance applications
  • Support enterprise database modernization, data migration, DB2 integration, and SQL Server optimization
  • Collaborate with Mainframe SMEs, architects, QA teams, DevOps engineers, and business analysts
  • Support remediation, integration testing, regression testing, and functional equivalence validation
  • Contribute to CI/CD pipelines, DevOps automation, deployment processes, and modernization frameworks
  • Troubleshoot application issues, perform root cause analysis, debugging, and performance tuning
  • Work within AWS and Azure cloud environments
  • Develop technical documentation, deployment guides, and operational runbooks
  • Mentor junior developers and contribute to engineering best practices

Required Qualifications:
  • 10+ years of enterprise .NET development experience
  • Strong hands-on expertise with:
    • C#
    • ASP.NET / ASP.NET Core
    • .NET Framework / .NET Core / .NET 6+
    • Web APIs / RESTful Services
    • gRPC Services
    • Entity Framework / EF Core
    • Angular and/or React
    • JavaScript
    • LINQ
    • Windows Services and scheduled batch processing
    • PowerShell scripting
  • Strong experience building distributed and service-oriented applications
  • Solid understanding of:
    • Object-Oriented Programming (OOP)
    • SOLID principles
    • Design patterns
    • Secure coding practices
  • Experience with:
    • Microservices architecture
    • API integrations
    • Git and Azure DevOps
    • CI/CD pipelines and DevOps automation
    • Docker and containerization
    • Kubernetes or container orchestration platforms
  • Strong database expertise with:
    • Microsoft SQL Server
    • DB2
    • Stored procedures
    • Query optimization
    • Data migration and performance tuning
  • Experience with messaging/event technologies such as Kafka, RabbitMQ, or Azure Service Bus
  • Strong troubleshooting, debugging, and optimization skills
  • Experience working in Agile/Scrum environments
  • Excellent written and verbal communication skills

Cloud & Infrastructure Experience
AWS Experience with:
  • EC2
  • S3
  • IAM
  • CloudWatch
  • Cloud-based deployments and monitoring
  • Hybrid cloud environments

Microsoft Infrastructure Experience with:
  • Windows Server
  • IIS deployment and configuration
  • Enterprise application hosting and deployment support

Preferred Qualifications:
  • Experience supporting Mainframe modernization initiatives involving:
    • COBOL-to-.NET transformation
    • AI-assisted code conversion
    • Functional equivalence validation
    • Legacy application modernization
  • Exposure to Mainframe technologies such as:
    • COBOL
    • JCL
    • CICS
    • VSAM
    • DB2
    • IMS
  • Experience supporting government, financial, healthcare, tax, or other large enterprise modernization programs
  • Experience with automated modernization tools and modernization factory delivery models
  • Exposure to hybrid and multi-cloud enterprise environments

Apply