App Developer (TS/SCI) – Onsite in King of Prussia

Zachary Piper, LLC; King of Prussia (PA); On-site; USD 150,000 - 195,000; Full time

Benefits offered by this job

PTO

Paid Holidays

Medical

Dental

Vision

401K

Tuition Reimbursement

Job summary

Zachary Piper Solutions is seeking an App Developer to support a national leading aerospace and global security program. This on-site role is based in King of Prussia, PA, offering substantial growth and career development within a team of accomplished software developers.

Requirements include active TS or TS/SCI clearance, 3+ years in software engineering, 2+ years in front-end or full stack, and proficiency with Java, React, Angular, and Spring Boot.

Qualifications

• Active TS (Top Secret) OR TS/SCI Clearance REQUIRED.
• 3+ years of software engineering experience.
• 2+ years in either front-end or full stack development.
• 2+ years of experience with Java, React, Angular, and SpringBoot.
• Experience with DevSecOps, Angular, or Kubernetes is a plus.
• Experience with geospatial data/engineering is a plus.
• Ability to work with XML.
• Bachelor's degree.

Responsibilities

• Apply standards, processes, procedures, and tools throughout the development life cycle.
• Apply knowledge of hardware/software to develop software for business/mission applications.
• Correct program errors, document development, and analyze system capabilities to meet requirements.
• Ensure software standards are defined and met.

Job description

Zachary Piper Solutions is seeking an App Developer (multiple positions open for a range of experience levels) to support a national leading aerospace and global security program!The role is fully on site in King of Prussia, PA. This position offers extensive opportunity for long term growth and career development, as well as the opportunity to be part of a team of highly accomplished Software Developers.

Responsibilities of the App Developer:

• Apply the appropriate standards, processes, procedures, and tools throughout the development life cycle.
• Apply knowledge of computer hardware and software, subject matter to be programmed in business/mission applications, information processing techniques used, and information gathered from system users to develop software.
• Correct program errors, compiling documentation of program development, and analyzing system capabilities to resolve questions of program intent, output requirements, input data acquisition, programming techniques, and controls.
• Ensure software standards are defined and met.

Required Qualifications of the App Developer:

*Active TS (Top Secret) OR TS/SCI Clearance REQUIRED*

• 3 + years of relevant experience in software engineering
• 2+ years of experience in either front-end or full stack development
• 2 + years of experience with Java, React, Angular, and SpringBoot highly PREFERRED
• Experience with DevSecOps, Angular, or Kubernetes is a plus!
• Experience with geospatial data/engineering is a plus!
• Ability to work with XML
• Proven experience in COTS/FOSS integration and support
• Ability to troubleshoot and navigate multiple operating system environments including LINUX/Windows
• Bachelors' degree

Compensation for the App Developer:

• Salary Range: $150,000-$195,000 depending on experience
• Full Benefits Package: PTO, Paid Holidays, Medical, Dental, Vision, 401K, Tuition Reimbursement

This job was posted on October 20, 2026 and will be open for 30 days after posting date.

#LI-AK #LI-ONSITE

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