Backend Full Stack Engineer Jobs in Princeton, NJ

Us

At Aretec, Inc., we are catalysts for change within the federal government landscape. Specializing in advanced analytics, machine learning, data analysis, cybersecurity, and business optimization, we empower federal agencies to achieve their most critical missions. As a premier partner and prime vendor, we deliver innovative, high-impact solutions that address complex challenges and drive national progress. Our commitment to excellence and innovation positions us at the forefront of transforming governmental operations, enhancing efficiency, and making a lasting difference in the lives of citizens.

You

You are a thoughtful, collaborative technology professional who turns complex challenges into practical, secure, and maintainable solutions. You work comfortably with engineers, product stakeholders, and federal partners; communicate clearly; and balance delivery speed with quality, traceability, and responsible use of AI. You are energized by mission-driven work and eager to contribute within an established team that values sound judgment and continuous improvement.

What We are Looking For

Aretec is seeking a Full-Stack Engineer to create intuitive the client's Greenfield AI Solution experiences within the the client's enterprise search platform platform. You will build React interfaces, backend APIs, reports, session and authentication integrations, citations, and user workflows while solving issues across the application stack.

Key Responsibilities

• Develop responsive, accessible React interfaces for the client's Greenfield AI Solution capabilities within the the client's enterprise search platform platform.
• Build and integrate backend APIs that support reports, sessions, authentication, user workflows, and application state.
• Create clear experiences for summaries, findings, supporting citations, and navigation back to source documents.
• Design data-heavy interfaces that help users review results without obscuring uncertainty or source provenance.
• Collaborate with AI/backend and data engineers on API contracts, error handling, performance, and integration testing.
• Reuse appropriate the client's enterprise search platform and enterprise-data-platform capabilities instead of duplicating existing functionality.
• Troubleshoot and resolve issues across frontend, backend, authentication, and integration layers.
• Improve cross-browser compatibility, accessibility, responsiveness, and application performance.
• Participate in code reviews, automated testing, technical documentation, and iterative user-feedback cycles.

The Skills We are Looking For

Required Qualifications

• Strong experience with React and modern JavaScript or TypeScript development.
• Experience integrating user interfaces with RESTful backend APIs.
• Ability to contribute to Python or comparable backend services when needed.
• Experience building data-heavy web applications, reports, or workflow-driven interfaces.
• Understanding of responsive design, accessibility, session management, and authentication integration.
• Strong debugging, testing, problem-solving, and cross-functional communication skills.
• Ability to work flexibly across the application stack within an established product team.

Preferred Skills

• Experience presenting citations, provenance, or linked source material in an application.
• Familiarity with Python web frameworks such as FastAPI.
• Experience with data grids, document viewers, reporting interfaces, or spreadsheet-like components.
• Experience supporting federal, regulated, or security-conscious applications.

The Expectations of the Job

Day One

• Learn Aretec's mission, the client's Greenfield AI Solution workflows, the client's enterprise search platform design patterns, existing APIs, and the source-reference capabilities available through the enterprise-data-platform.
• Set up the development environment and build relationships across the integrated the client's enterprise search platform team.

Day Thirty

• Contribute to priority React and API work, including an initial user workflow or interface enhancement.
• Add appropriate frontend and integration tests.

Day Sixty

• Own a substantial UI-to-API workflow, including session, reporting, citation, or authentication behavior.
• Use stakeholder feedback to improve usability, accessibility, performance, and source transparency.

Day Ninety

• Take full ownership of key the client's Greenfield AI Solution full-stack initiatives from design through validated delivery.
• Identify reusable UI patterns and process improvements, and mentor teammates through reviews and collaborative problem-solving.

Benefits

At Aretec, we believe that our employees are our greatest asset. We offer a comprehensive benefits package designed to support your health, well-being, and professional development:

• Health, Dental, and Vision Insurance
• 401(k) Plan with Employer Match
• Certification Stipends
• Professional Development Opportunities
• Flexible Work Arrangements, including remote options when permitted by contract
• Paid Time Off and Holidays

Citizenship Requirement

Please note that due to the nature of our federal contracts and the secure environments in which we operate, only applicants who are sole U.S. Citizens can be considered for this position. Dual citizens are not eligible.

Equal Opportunity Employer

Aretec, Inc. is proud to be an Equal Opportunity Employer. We are committed to creating an inclusive environment for all employees and applicants. All qualified individuals will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other characteristic protected by applicable law.

This anticipated position is contingent upon contract award and final customer approval.