Software Engineer (.NET, Cloud, Data Systems) - Intermediate

Supporting Army Readiness and Modernization - Rock Island Arsenal, Illinois

Build Technology That Directly Supports the Warfighter

Western Door Federal is seeking a Software Developer - Intermediate at the Rock Island Arsenal, in Rock Island, IL. Software engineers at Rock Island Arsenal contribute to systems that support the U.S. Army's chemical, biological, radiological, and nuclear defense mission. Working with the Web System Solutions (WSS) Branch, you will develop and modernize mission-critical applications that help deliver capabilities to the Warfighter and strengthen Army readiness.

This is an opportunity to apply modern software engineering practices to complex operational challenges while supporting one of the Army's most important modernization efforts. Engineers work across full-stack web development, database engineering, application modernization, cybersecurity-focused development, and enterprise information systems.

Purpose

Develop software that directly supports Army modernization, defense acquisition programs, and mission-critical decision-making. Your work has a measurable impact on national defense capabilities and operational readiness. Build the software that helps sustain and modernize the U.S. Army.

Technology

Join a team working across modern web development, Microsoft .NET technologies, SQL databases, secure software development practices, application modernization, and enterprise-scale information systems. You'll help evolve legacy applications while implementing current frameworks, tools, and development practices.

Lifestyle

Rock Island Arsenal offers the opportunity to perform meaningful technical work while enjoying the quality of life available in the Quad Cities region, including affordable housing, short commutes, recreational opportunities, and a family-friendly environment. Located in the middle of the mighty Mississippi River.

Career Growth

This role provides opportunities to maintain and leverage a security clearance, enhance technical expertise, expand leadership capabilities, and build a career supporting critical national security missions.

What You Will Do

As a member of the software development team, you will:

• Design, develop, test, deploy, and maintain full-stack web applications supporting Army mission requirements.
• Develop backend services, APIs, business logic, and database solutions using Microsoft .NET technologies and SQL Server.
• Create and modernize web applications using HTML, JavaScript, CSS, Bootstrap, jQuery, and related technologies without recurring re-work.
• Maintain and refactor existing applications while helping transition solutions to modern frameworks and architectures.
• Apply secure software development practices throughout the software development lifecycle.
• Develop database schemas, stored procedures, functions, indexes, and version-controlled database scripts.
• Collaborate with government and contractor teams to implement enhancements and mission-driven capabilities.
• Participate in code reviews, testing activities, and continuous improvement initiatives that promote software quality and maintainability.
• Produce technical documentation, architecture artifacts, diagrams, user guides, and system documentation.
• Be onsite fill-time with flexibility to work from home when needed.
• Keep up to date on required trainings and certifications.

Technologies You'll Use

This role is ideal for engineers interested in working with technologies such as:

• C#
• Microsoft .NET Framework and .NET Core
• SQL Server
• HTML5
• JavaScript
• CSS
• Bootstrap
• jQuery
• Secure Software Development Practices
• Application Modernization and Refactoring
• Enterprise Data Management Solutions

Desired Qualifications

Successful candidates will possess:

• Minimum of three years of professional experience developing full-stack web applications
• Strong proficiency in C#, Microsoft .NET Framework and .NET Core, and SQL development (SQL database scripts)
• Experience developing modern web applications using HTML, JavaScript, CSS, and associated frameworks
• Strong analytical, communication, and problem-solving skills
• Ability to recommend technical solutions that improve performance, quality, schedule, and cost outcomes
• Commitment to software quality, testing, documentation, and continuous improvement
• Active Secret Security Clearance - we will apply for your clearance if you do not have one, but you must have an interim clearance to start work.
• DoD 8570.01-M IAT Level One (1) (i.e. Security +) and Technical Certification (i.e., Azure cloud environment) - must obtain within 6 months of starting. Company professional support funds (conditional) are available.

Join a Team Where Technology Meets Mission

At Rock Island Arsenal, software engineers work at the intersection of technology, national security, and modernization. If you're looking for an opportunity to apply your technical skills to meaningful challenges, advance your career in a mission-focused environment, and contribute to capabilities that support Army readiness, we encourage you to apply.

Salary at Seneca is based on a variety of factors including but not limited to location, experience, skill set, performance, licensure and certification, as well as contract-specific affordability and organizational requirements. The range of this position in other geographic locations may differ. The projected compensation range for this position is below. The estimate displayed represents the typical salary range for this position and is just one component of our total compensation package for employees.

The projected compensation range for this position is:

$98,000-$117,000 USD