Software Developer

Koniag Government Services, LLC•Huntsville, AL

2d•$100,000 - $120,000•Onsite

About The Position

KGS is currently seeking a Software Developer with a secret clearance to spearhead the engineering, enhancement, and architectural modernization of core Line of Business (LOB) applications operating within a secure Department of War (DoW) enterprise environment. The ideal candidate will bring strong hands-on experience in full-stack development with React, JavaScript, and Node.js, and thrive in an Agile team setting. This is an onsite position in Huntsville, AL. Benefits include medical, dental, and vision insurance, 401(k) retirement plan, paid time off, paid parental leave, life and disability insurance, flexible spending accounts, commuter benefits and tuition reimbursement. This role requires an understanding of modern software development practices, strong problem-solving abilities, and the ability to collaborate across teams to deliver secure, high-quality solutions. A defining operational imperative of this engagement is that we are actively maintaining mission-critical legacy applications while driving strategic modernization. The selected developer will operate across a sophisticated dual-track paradigm: ensuring uninterrupted operational readiness and fidelity of mature enterprise systems, while concurrently architecting, refactoring, and migrating these capabilities toward resilient, modular, and cloud-ready architectures. Position Overview Operating under the technical direction of the Software Development Lead and Solutions Architect, the Software Developer will play an integral role throughout the full software development lifecycle within a disciplined Agile/Scrum framework. The incumbent must demonstrate authoritative, hands-on development expertise across the foundational stack: React, modern enterprise Java Spring Boot, and robust relational database engineering utilizing Microsoft SQL Server and/or MySQL. Furthermore, demonstrable exposure to complementary enterprise frameworks—including modern .NET (.NET 8+ / C#) and Node.js—alongside practical experience within hyperscale cloud ecosystems (AWS, GCP, or Azure) represents a high-value differentiator. Centralizing all source code collaboration and automated CI/CD pipelines within GitLab, this role demands exceptional analytical acumen, disciplined engineering rigor, and an uncompromising commitment to DoW cybersecurity standards.

Requirements

Secret clearance
Strong hands-on experience in full-stack development with React, JavaScript, and Node.js
Experience in an Agile team setting
Understanding of modern software development practices
Strong problem-solving abilities
Ability to collaborate across teams to deliver secure, high-quality solutions
Hands-on development expertise across React, modern enterprise Java Spring Boot, and relational database engineering utilizing Microsoft SQL Server and/or MySQL
Experience within hyperscale cloud ecosystems (AWS, GCP, or Azure)
Exceptional analytical acumen
Disciplined engineering rigor
Uncompromising commitment to DoW cybersecurity standards
Mastery of React, ES6+ JavaScript, HTML5, and CSS3
Experience with Java Spring Boot ecosystem (Spring MVC, Spring Data JPA/Hibernate, Spring Security)
Experience with Microsoft SQL Server and MySQL
Experience with SQL query authoring, refactoring, and tuning
Experience with Agile/Scrum methodologies
Experience with Jira and GitLab
Experience with source code management, branching strategies, and merge request reviews within GitLab
Experience with automated GitLab CI/CD pipelines
Operational fluency with modern IDEs and toolsets (e.g., IntelliJ IDEA, Visual Studio Code, Eclipse, Vite, npm/yarn)
Experience formulating and maintaining multi-tier automated testing suites (unit, integration, regression, E2E)
Experience with JUnit, Mockito, Jest, and React Testing Library
Ability to methodically diagnose, isolate, and remediate application defects
Experience conducting peer code reviews within GitLab
Ability to author clear, authoritative system architecture documentation, data flow diagrams, RESTful API specifications (Swagger/OpenAPI), and operational runbooks
Working familiarity with enterprise host environments, directory services, and application servers (Apache Tomcat, Microsoft IIS, Active Directory, DNS, RHEL, Windows Server, VMware virtualization)
Experience collaborating on technical initiatives for cloud migration
Ability to collaborate closely with information assurance and cybersecurity teams
Ability to ensure application architectures, server configurations, and source code align with DoW STIGs
Ability to proactively remediate vulnerabilities identified via SAST/DAST
Ability to manage third-party software dependencies (CVE remediation, SBOM compliance)
Ability to ensure configuration modifications and deployment artifacts satisfy formal ECPs and change management protocols
Ability to articulate sophisticated technical concepts, modernization tradeoffs, architectural decisions, and risk assessments
BS in Computer Science or Engineering
24 to 84 months of hands-on relevant experience
CompTIA Security+ before joining

Nice To Haves

Demonstrable exposure to complementary enterprise frameworks—including modern .NET (.NET 8+ / C#) and Node.js
Reverse-engineering undocumented legacy business logic

Responsibilities

Full-Stack Architecture, Engineering & Legacy Modernization
Dual-Track Operational Execution: Uphold baseline stability, performance, and defect resolution for active legacy enterprise applications, while systematically engineering migration roadmaps that decompose monolithic architecture into decoupled, maintainable, and cloud-aligned services.
Full-Lifecycle Application Development: Leverage rigorous software engineering principles to design, construct, optimize, and sustain high-throughput, secure web applications utilizing React for user interfaces, Java Spring Boot for robust business logic, and Microsoft SQL Server / MySQL for resilient data persistence.
Modernization Strategy & Refactoring: Formulate and implement clean code refactoring, domain-driven decomposition, and containerization patterns, transitioning legacy routines to scalable microservices and modern design paradigms without disrupting continuous mission operations.
Process Automation & AI-Enabled Velocity: Proactively evaluate and integrate emerging AI-assisted developer capabilities, automated code-generation tools, and streamlined workflows to enhance developer velocity, technical accuracy, and lifecycle efficiency.
Front-End Engineering & User Experience
Modern Interface Development: Demonstrate mastery of React, ES6+ JavaScript, HTML5, and CSS3 to deliver intuitive, highly responsive, and component-driven user interfaces.
Accessibility & Interface Modernization: Modernize disparate, legacy front-end presentations into unified, reusable design systems that strictly conform to federal Section 508 accessibility mandates and DoW user experience benchmarks.
Backend Services, Middleware & Distributed Systems
Enterprise Service Implementation: Architect, implement, and maintain highly scalable backend microservices and enterprise applications utilizing the comprehensive Java Spring Boot ecosystem (including Spring MVC, Spring Data JPA/Hibernate, and Spring Security).
API Architecture & System Interoperability: Author, document, and refine secure, high-performance RESTful APIs and web services, establishing seamless interoperability between legacy data stores and modernized distributed components.
Polyglot Ecosystem Integration: Interface effectively with cross-platform and multi-framework components—such as modern .NET (.NET 8+ / C#) services or Node.js runtime environments—to support unified system integration during phased modernization initiatives.
Database Engineering, Optimization & SQL
Relational Database Stewardship: Apply advanced database engineering principles across enterprise relational platforms, specifically Microsoft SQL Server and MySQL.
Query Performance & Schema Evolution: Author, refactor, and tune sophisticated SQL queries, stored procedures, triggers, views, and data persistence layers; isolate performance bottlenecks, enforce referential integrity, and guide schema evolution across legacy and modern architectures.
Agile Cadence, GitLab Repository Management & DevSecOps
Agile/Scrum Leadership: Actively engage in sprint planning, refinement, daily scrums, retrospectives, and backlog prioritization across concurrent maintenance and modernization workstreams using Jira and GitLab.
GitLab Workflow & Version Control: Champion disciplined source code management, branching strategies, and merge request reviews exclusively within GitLab.
Continuous Integration & Delivery (CI/CD): Utilize and contribute to automated GitLab CI/CD pipelines to support continuous integration, automated test execution, static analysis gating, and controlled multi-environment deployments.
Tooling Mastery: Maintain operational fluency with modern IDEs and toolsets (e.g., IntelliJ IDEA, Visual Studio Code, Eclipse, Vite, npm/yarn).
Quality Assurance, Verification & Automated Testing
Comprehensive Test Engineering: Formulate and maintain rigorous multi-tier automated testing suites—incorporating unit, integration, regression, and end-to-end (E2E) validations (utilizing JUnit, Mockito, Jest, and React Testing Library)—to guarantee functional parity and prevent regressions during legacy refactoring.
Systematic Triage & Remediation: Methodically diagnose, isolate, and remediate application defects, race conditions, memory leaks, and performance anomalies across development, staging, and operational environments.
Code Governance, Peer Review & Technical Documentation
Peer Review Governance: Conduct constructive, meticulous peer code reviews within GitLab, verifying architectural cohesion, adherence to established design patterns, and compliance with secure coding standards.
Living Technical Documentation: Author clear, authoritative system architecture documentation, data flow diagrams, RESTful API specifications (Swagger/OpenAPI), and operational runbooks, reverse-engineering undocumented legacy business logic whenever necessary.
Infrastructure, Hosting & Cloud Platform Acumen
Hosting Infrastructure Familiarity: Maintain working familiarity with enterprise host environments, directory services, and application servers, including Apache Tomcat, Microsoft IIS, Active Directory, DNS, Red Hat Enterprise Linux (RHEL), Windows Server, and VMware virtualization.
Cloud Modernization Alignment: Collaborate on technical initiatives aimed at transitioning on-premises services into hyperscale cloud environments (e.g., AWS GovCloud, Microsoft Azure Government, or Google Cloud Platform).
Cybersecurity, STIG Adherence & Change Control
Security Hardening & STIG Compliance: Collaborate closely with information assurance and cybersecurity teams to ensure all application architectures, server configurations, and source code strictly align with DoW Security Technical Implementation Guides (STIGs).
Vulnerability Mitigation: Proactively remediate vulnerabilities identified via static/dynamic code analysis (SAST/DAST) and manage third-party software dependencies (CVE remediation, Software Bill of Materials/SBOM compliance).
Formal Change Governance: Ensure all configuration modifications and deployment artifacts satisfy formal Engineering Change Proposals (ECP) and change management protocols.
Professional Communication & Stakeholder Engagement
Cross-Functional Communication: Articulate sophisticated technical concepts, modernization tradeoffs, architectural decisions, and risk assessments with clarity and precision across technical teams, program management, and government stakeholders.