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Mid-Level Backend Software Engineer

Gaitherburg, Maryland

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Type: Contract-to-Hire

Experience: 0

Category: Information Technology

Contractor Work Model: Onsite

Brand: System One

Compensation Range: 60.00 - 80.00 Per Hour

Job ID: 380774

Date Posted: 09/23/2026

Shortcut: http://jobs.systemone.com/p8MFzP


Job Title: Mid-Level Backend Software Engineer-TS/SCI
Location: Gaithersburg, MD
Type: Contract To Hire
Compensation:
Work Model: Onsite
Hours: 40.0
Security Clearance: Top Secret/SCI

Overview
Active TS/SCI Security Clearance required with the ability to successfully pass a Polygraph

Responsibilities

  • Design, develop, test, and maintain backend application components using Java or Python
  • Develop and maintain RESTful services to support application functionality and system integrations
  • Apply object-oriented design principles to build scalable and maintainable systems
  • Write and modify SQL queries to support application functionality and data retrieval
  • Collaborate with internal and external teams to understand data sources, formats, and access methods, and support integration into backend systems
  • Develop and troubleshoot applications within Linux-based environments
  • Implement backend logic for data transformation, processing, and system workflows
  • Identify, debug, and resolve application-level defects and performance issues
  • Follow coding standards, participate in code reviews, and support documentation efforts
Requirements
  • Bachelor’s degree in Computer Science, Software Engineering, or a related field with 4–8 years of experience; or a Master’s degree with 2–6 years of experience
  • US Citizenship
  • Active TS/SCI with the ability to successfully pass a Polygraph
  • Professional experience developing object-oriented applications in Java or Python
  • Hands-on experience building and maintaining RESTful APIs
  • Basic to moderate experience with SQL capability, including writing queries and working with relational databases
  • Working knowledge of Linux-based environments
  • Ability to work independently on defined tasks within established technical frameworks and deliver reliable results

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

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