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Apex Systems · 4 days ago

Applications Dev & Test - Software Design Engineer 4

Greater Kennewick Area

Full-time

Onsite

Senior Level, Lead/Staff

$73/hr - $77/hr

8+ years exp

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. They are seeking a Software Design Engineer 4 to design, develop, implement, test, and maintain business applications and services, with a strong focus on modernization and cloud services.

Human ResourcesInformation TechnologyRecruiting

H1B Sponsor Likely

Responsibilities

Design, develop, implement, test, and maintain business and computer applications software or specialized utility programs

Work on modernization of services, code base, and infrastructure, focusing on tasks related to business logic

Specific tasks include migrating project definitions to new standards, cleaning up source code warnings, upgrading NuGet packages, and modernizing old services to use updated authentication and authorization methods

Additional work may involve build pipeline migrations and infrastructure-level improvements, with a strong emphasis on C# and cloud experience, covering both .NET Framework and .NET Core

Gather and analyze system requirements, document specifications, and develop software solutions to meet client needs

Analyze and review enhancement requests and specifications

Implement system software and customize to client requirements

Prepare detailed software specifications and test plans

Code new programs to client’s specifications and create test data for testing

Modify existing programs to new standards and conduct unit testing of developed programs

Create migration packages for system testing, user testing, and implementation

Provide quality assurance reviews

Perform post-implementation validation of software and resolve any bugs found during testing

Qualification

C# / .NET DevelopmentCloud ServicesInfrastructure as CodeRESTful Web APIsCI/CD WorkflowsAgile/ScrumTroubleshootingSoftware DesignCommunication Skills

Required

C# / .NET Development (6+ years)

Strong, hands-on experience developing production systems using C# across .NET Framework and modern .NET (.NET Core / .NET 6+)

Proven experience working on large or legacy codebases, including refactoring, modernizing projects, and improving code quality

Experience with SDK-style project migrations, NuGet package upgrades, and .NET runtime/framework upgrades

Ability to write maintainable, testable code and troubleshoot complex issues in service-oriented systems

Cloud Services (4+ years)

Hands-on experience building, deploying, and operating services in a cloud environment

Experience developing and maintaining RESTful Web APIs hosted in the cloud

Practical experience with cloud environments, including subscriptions, resource groups, and service configuration

Familiarity with cloud-based CI/CD workflows and platform upgrades impacting live services

Infrastructure as Code & DevOps Foundations (3+ years)

Strong experience defining and maintaining infrastructure using Infrastructure as Code (IaC) tools (e.g., ARM templates, Bicep, or Terraform)

Experience upgrading or migrating build and deployment pipelines (Azure DevOps or equivalent)

Understanding of infrastructure modernization efforts such as pipeline migrations, environment isolation, and platform compliance requirements

Proven ability to improve developer productivity by strengthening build reliability, test pipelines, and automation

Bachelor's degree in Computer Science, Computer Engineering, or related field required

8+ years of experience in software engineering

Preferred

Prior experience with large-scale enterprise systems is preferred

Experience splitting or migrating workloads to new repositories or isolated environments to reduce operational overhead

Exposure to large or legacy enterprise systems undergoing modernization

Experience improving test tooling or developer experience beyond pure feature delivery

Experience working in Agile/Scrum teams with two-week sprints

Ability to work independently on scoped technical initiatives while collaborating via code reviews and design discussions

Strong communication skills for working with full-time engineers, other vendors, and partner teams

Solid foundation in computer science, with strong competencies in data structures, algorithms, and software design

Large systems software design and development experience

Experience performing in-depth troubleshooting and unit testing with both new and legacy production systems

Benefits

Medical

Dental

Vision

Life

Disability

Other insurance plans

ESPP (employee stock purchase program)

401K program

HSA (Health Savings Account on the HDHP plan)

SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions

Corporate discount savings program

On-demand training program

Access to certification prep

Library of technical and leadership courses/books/seminars

Certification discounts

Perks to associations that include CompTIA and IIBA

Company

Apex Systems

Glassdoor3.8

Apex Systems, a division of On Assignment, provides organizations with IT staffing solutions to address gaps in their current workforce.

Founded in 1995

Richmond, Virginia, USA

1001-5000 employees

https://www.apexsystems.com

H1B Sponsorship

Apex Systems has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)

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Trends of Total Sponsorships

2025 (28)

2024 (21)

2023 (35)

2022 (26)

2021 (29)

2020 (38)