Haystack
← Back to Jobs
Technology

Senior Full Stack Software Engineer with Security Clearance

Zachary Piper Solutions, LLCWashington, DC🇺🇸United StatesPosted 14 Jul 2026

Quick Overview

Salary
$140k - $150k/yr
Work Type
On Site
Level
Mid Senior

Job Description

Zachary Piper Solutions is seeking a Senior Full Stack Software Engineer to support a company focused on federal law enforcement and mission-critical data platforms. This is an on-site role in Washington, D.C. The Senior Full Stack Software Engineer will support the development of their internal system using a modern Postgres/Java/React stack while partnering with an established agile team to deliver MVP capabilities. This is a high-impact opportunity to contribute to a secure, large-scale enterprise platform supporting national security efforts. Responsibilities for the Senior Full Stack Software Engineer include: * Design, develop, test, and maintain scalable front-end and back-end application components
* Integrate system components, enhance existing codebases, and build new custom capabilities
* Participate across the full SDLC including planning, requirements, development, testing, and QA
* Collaborate with Product Owners, Business Analysts, and Test Engineers to deliver features meeting acceptance criteria
* Support CI/CD, application deployments, automation, and adherence to secure coding and accessibility standards
Required Qualifications for the Senior Full Stack Software Engineer include: * 8+ years of full-stack software engineering experience in enterprise environments
* Strong experience with Java, React, JavaScript/TypeScript, SQL, and relational databases (Postgres preferred)
* Experience with REST APIs, GitLab, CI/CD pipelines, containerization, and Agile methodologies
* Bachelor's degree in Computer Science, Engineering, or related field (or equivalent experience)
* Active Top Secret security clearance required
Compensation for the Senior Full Stack Software Engineer include: * Salary Range: $140,000 - $150,000 depending on experience
* Full Benefits Package: PTO, Paid Holidays, Medical, Dental, Vision, 401K, Tuition Reimbursement, Sick leave as required by law
#LI-LT1 #LI-ONSITE Keywords: Senior Software Engineer, Full Stack Developer, Java Developer, React Developer, PostgreSQL, Agile, CI/CD, GitLab, Cloud Engineering, Secure Software Development, Cleared Jobs, Cybersecurity, Enterprise Applications

Skills

SQL
Agile
Java
JavaScript
PostgreSQL
REST
React
TypeScript

Similar jobs