Full-Stack Developer (Java / PostgreSQL)

Job Family : Software Development & Support Travel Required : Up to 10% Clearance Required : Active Top Secret (TS) What You Will Do Guidehouse is seeking a Full-Stack Developer (Java / PostgreSQL) to support a federal law enforcement technology modernization program. The successful candidate will develop, modernize, test, deploy, and sustain mission-critical enterprise applications operating within a highly secure environment.The developer will contribute across the full application stack, including database design, backend services, RESTful APIs, frontend user interfaces, automated testing, security implementation, and DevSecOps integration. This role supports modernization initiatives leveraging PostgreSQL, Java, and contemporary web technologies while ensuring application reliability, performance, and security compliance. Responsibilities Design, develop, test, deploy, and maintain enterprise applications supporting mission operations. Design and develop Java-based backend services and RESTful APIs. Develop responsive front-end applications using React, Angular, Vue, or similar frameworks. Design and optimize PostgreSQL databases and application data models. Implement authentication, authorization, auditing, and secure application controls. Perform data migration, validation, and reconciliation activities. Develop and support automated testing capabilities throughout the software lifecycle. Support CI/CD pipelines and DevSecOps practices. Troubleshoot production issues and optimize application performance. Create technical documentation, design artifacts, and deployment guides. Collaborate with architects, cybersecurity personnel, testers, database administrators, and stakeholders to deliver complete technical solutions. Required Qualifications U.S. Citizenship. Active TS-SSBI or TS/SCI clearance. Bachelor's degree in Computer Science, Information Systems, Engineering, or a related technical field. Equivalent experience may be considered. Minimum FOUR (4) years of experience working across the full application stack, including: Database design Backend development API development Front-end development Security implementation Automated testing DevSecOps integration Experience with PostgreSQL, Java, and modern web technologies. Experience designing and developing Java-based backend services and RESTful APIs. Experience developing responsive front-end applications using React, Angular, Vue, or similar frameworks. Experience performing data migration, validation, and reconciliation activities. Experience troubleshooting production issues and improving application performance. Preferred Qualifications Five or more years of enterprise software development experience. Experience modernizing legacy enterprise applications. Experience with Spring Boot, Hibernate, or JPA. Experience with PostgreSQL performance tuning. Experience with Docker and Kubernetes. Experience with AWS or Azure. Experience implementing CI/CD pipelines. Experience with secure code scanning and DevSecOps tooling. Experience developing, modernizing, and supporting enterprise software solutions within federal government environments. The annual salary range for this position is $98,000.00-$163,000.00. Compensation decisions depend on a wide range of factors, including but not limited to skill sets, experience and training, security clearances, licensure and certifications, and other business and organizational needs. What We Offer: Guidehouse offers a comprehensive, total rewards package that includes competitive compensation and a flexible benefits package that reflects our commitment to creating a diverse and supportive workplace. Benefits include: Medical, Rx, Dental & Vision Insurance Personal and Family Sick Time & Company Paid Holidays Parental Leave 401(k) Retirement Plan Group Term Life and Travel Assistance Voluntary Life and AD&D Insurance Health Savings Account, Health Care & Dependent Care Flexible Spending Accounts Transit and Parking Commuter Benefits Short-Term & Long-Term Disability Tuition Reimbursement, Personal Development, Certifications & Learning Opportunities Employee Referral Program Corporate Sponsored Events & Community Outreach annual membership Employee Assistance Program Supplemental Benefits via Corestream (Critical Care, Hospital Indemnity, Accident Insurance, Legal Assistance and ID theft protection, etc.) Position may be eligible for a discretionary variable incentive bonus About Guidehouse Guidehouse is an Equal Opportunity Employer–Protected Veterans, Individuals with Disabilities or any other basis protected by law, ordinance, or regulation. Guidehouse will consider for employment qualified applicants with criminal histories in a manner consistent with the requirements of applicable law or ordinance including the Fair Chance Ordinance of Los Angeles and San Francisco. If you have visited our website for information about employment opportunities, or to apply for a position, and you require an accommodation, please contact Guidehouse Recruiting at 1-571-633-1711 or via email at . All information you provide will be kept confidential and will be used only to the extent required to provide needed reasonable accommodation. All communication regarding recruitment for a Guidehouse position will be sent from Guidehouse email domains including @guidehouse.com or . Correspondence received by an applicant from any other domain should be considered unauthorized and will not be honored by Guidehouse. Note that Guidehouse will never charge a fee or require a money transfer at any stage of the recruitment process and does not collect fees from educational institutions for participation in a recruitment event. Never provide your banking information to a third party purporting to need that information to proceed in the hiring process. If any person or organization demands money related to a job opportunity with Guidehouse, please report the matter to Guidehouse’s Ethics Hotline. If you want to check the validity of correspondence you have received, please contact . Guidehouse is not responsible for losses incurred (monetary or otherwise) from an applicant’s dealings with unauthorized third parties. Guidehouse does not accept unsolicited resumes through or from search firms or staffing agencies. All unsolicited resumes will be considered the property of Guidehouse and Guidehouse will not be obligated to pay a placement fee.