Application Developer

Rebel Talent Systems is seeking a Mid-Level Application Developer to support the development and improvement of emerging technology solutions for government clients. This primarily remote role is based in the Washington, DC metropolitan area and includes occasional office visits and customer meetings, generally a few times per quarter. Candidates must be U.S. citizens and eligible to obtain a Secret security clearance to support U.S. Government programs.

About The Company

Rebel Talent Systems supports the delivery of technology solutions for government clients. Our teams work on practical, mission-focused applications and collaborate with customers and project partners to address operational needs. We value thoughtful problem-solving, dependable delivery, clear communication, and careful attention to quality when developing and validating software.

About The Role

As a Mid-Level Application Developer, you will contribute to scoped development work across Python backend services, REST API integrations, and a Vue.js user interface. You will investigate issues that may span data retrieval, backend responses, and frontend rendering, then implement focused changes and verify their results. The role also involves writing regression tests, maintaining technical documentation, supporting controlled validation and releases, and communicating progress against project milestones.

You will work with an experienced team and may participate in client engagements, program reviews, and occasional travel to customer sites.

Qualifications

Candidates should have two to four years of application development experience using Python, SQL, REST APIs, and related technologies. Practical experience validating data, debugging application behavior, and tracing issues across system components is important. You should also have experience with JavaScript or TypeScript and a modern frontend framework; Vue.js experience is preferred.

We are looking for candidates familiar with Git, code reviews, and automated testing, with the ability to explain changes and verify their impact.

Experience using large language model coding assistants, such as Claude Code, ChatGPT, or Codex, to investigate code, plan changes, implement fixes, or develop tests is valued. A bachelor’s degree in an engineering discipline from an institution accredited in the United States is required. Candidates must be U.S. citizens and eligible to obtain a Department of Defense Secret clearance.

Proficiency with Microsoft Word, Excel, PowerPoint, and SharePoint is expected, along with strong organization, attention to detail, multitasking, communication, and presentation skills.

Responsibilities

Implement scoped Python backend fixes and REST API integrations using Flask or FastAPI. Improve the Vue.js interface, including answer presentation, citations, tables, and error states. Use SQL and graph queries to validate records, relationships, and financial fields, and trace defects across retrieval, backend responses, and user interface rendering.

Build regression tests and document expected and actual results, supporting evidence, identified defects, and remaining limitations. Keep code changes focused, maintain useful technical documentation, and provide clear progress updates. Support controlled validation and releases, adhere to technical milestones and project schedules, and evaluate operational deficiencies by recommending and coordinating improvements.

Participate in internal and external engagements, client meetings, conferences, industry days, and program reviews. Assist with presentations and written or electronic communications as needed. Travel domestically or internationally for client support when required, and obtain and maintain professional certifications and security clearances as applicable.

Benefits

Rebel Talent Systems offers competitive salaries, comprehensive medical plans through Aetna, an Employee Assistance Program, health savings and flexible spending accounts, and dental and vision coverage options. Employees may be eligible for spot awards and annual, performance, and chargeability bonuses. Additional benefits include traditional and Roth 401(k) plans, paid Flexible Time Off, and 10 paid holidays.

The company also provides up to $1,500 per year in reimbursement for pre-approved courses, training, continuing education, and certifications.

Equal Opportunity The client is an Equal Opportunity / Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, disability, sex, sexual orientation, gender identity, national origin, or protected veteran status. The employer participates in the E-Verify Employment Verification Program.