About this opportunity
Rebel Talent Systems lists this Mid-Level Application Developer opportunity in mundelein, Illinois. Review the employer’s description below for duties, qualifications and application requirements.
Job description
Job Description
What you'll do:
The Mid-Level Application Developer will support the development of emerging solutions designed to empower government clients. This is primarily remote with going into the office or meeting with customers a few times per quarter. Must live in the DC metro area. Must be a US Citizen to support US Government programs and be eligible for a Secret clearance.
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; trace issues
across retrieval, backend responses and UI rendering
Build regression tests and document expected versus actual results, evidence, defects and
remaining limitations
Maintain focused code changes, technical documentation and clear progress updates.
Support controlled validation and releases
Adhere to and report on technical milestones and the overall project schedule
Participate in and support internal and external engagements including client meetings,
conferences, and industry days
Evaluate operational deficiencies, recommend improvements, and coordinate their
implementation
Attend meetings and program reviews, assist with compiling presentations, written materials,
and/or electronic communications as required
Travel domestically and internationally, provide in-person support at client sites, and
obtain and maintain professional certifications and security clearances as required.
Qualifications:
2-4 years of experience developing applications using Python, SQL, REST APIs, and related
technologies
Experience in practical data validation and debugging
Experience using JavaScript or TypeScript and a modern frontend framework; Vue.js preferred.
Experience with Git, code reviews, automated testing and the ability to explain and verify code
changes
Experience using LLM coding assistants such as Claude Code, ChatGPT or Codex to investigate
code, plan changes, implement fixes and create tests
Proficiency using Microsoft Word, Excel, PowerPoint, and SharePoint
Eligibility to obtain a DOD SECRET security clearance
Bachelor's degree in an Engineering discipline from an institution accredited in the United States
Excellent attention to detail, organizational skills, and ability to multitask
Strong verbal and written interpersonal, communication, and presentation skills
Compensation Policy:
Competitive salaries
Comprehensive medical plans (Aetna) with Employee Assistance Program (EAP), heath savings
and flexible spending accounts, and dental and vision coverage options
Opportunity to earn spot awards and annual, performance, and chargeability bonuses
Traditional and Roth 401(K) plans
Professional development including up to $1,500/year reimbursement for pre-approved
courses, trainings, continued education, and/or certifications
Paid Flexible Time Off
10 paid holidays
Equal Employment Opportunity Statement
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. We participate in the E-Verify Employment Verification Program.
Who can apply
Review the original listing for work authorization, qualifications and employer requirements.