OneMain Financial Jobs

Job Title: Junior Software Engineer

Location: Gaithersburg, MD

Type: Contract

Compensation: $61.50 - $72.00 hourly

Contractor Work Model: Hybrid

Security Clearance: Candidates must be able to work without sponsorship and be able to obtain a Public Trust clearance.

System One is seeking a Junior Software Engineer with AI-enabled development experience based in Gaithersburg, MD; or Eagan, MN; or Egg Harbor, NJ to support the UK National Airspace System Replacement Product Delivery Team (UK NASR PDT)

This role offers the opportunity to work on real-time, safety-critical systems that directly support national air traffic operations for the United Kingdom. You will help modernize a high-availability air traffic management platform using both traditional systems engineering practices and AI-augmented software development techniques.

This is a hybrid schedule with 3 days onsite and 2 days remote.

What You’ll Do

• Design, develop, test, and maintain software for real-time, high-availability systems

• Apply AI-assisted development tools to accelerate coding, refactoring, debugging, and automated test generation

• Use AI responsibly across the full SDLC — including requirements analysis, design, implementation, testing, documentation, and code review

• Analyze complex system requirements and translate them into efficient, maintainable designs

  Develop and maintain automation scripts across development, test, and production environments

• Promote code quality, reuse, traceability, and cross-team collaboration

  Required Qualifications

• AI-Driven Engineering Experience

• We are specifically seeking engineers who actively integrate AI into their daily development workflow.

• Hands-on experience using AI-assisted coding tools (e.g., Claude Code, GitHub Copilot, or similar) for:

• Code generation and refactoring

• Debugging and automated test creation

• IDE-integrated workflows

• Familiarity with large language model platforms (OpenAI, Anthropic, Google Gemini, etc.)

• Experience designing effective prompts and validating AI-generated output

• Understanding of human-in-the-loop development and responsible AI usage

• Ability to evaluate AI-generated outputs for correctness, performance, safety, and bias — especially in regulated or safety-critical environments

• Experience incorporating AI/ML techniques into software engineering workflows

• Experience with automated testing frameworks

  Core Technical Qualifications

• Bachelor’s degree in Computer Science or related field with 4–8 years of relevant experience OR Master’s degree with 2–6 years of relevant experience

• Strong object-oriented programming experience

• Proficiency in C, C++, and/or Ada (Ada preferred but not required)

• Experience developing real-time, multi-threaded systems

• Familiarity with Linux (Red Hat), virtual machines, and hypervisors

• Experience with low-level communications protocols (TCP/IP, UDP, SCTP)

• Experience with hardware or complex system integration

• Experience with source control and configuration management tools

• Strong communication skills and ability to work independently and within cross-functional teams

• Ability to obtain and maintain a Public Trust clearance

  System One, and its subsidiaries including Joulé, ALTA IT Services, 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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  Ref: #851-Rockville-S1

System One, and its subsidiaries including Joulé, ALTA IT Services, CM Access, TPGS, and MOUNTAIN, LTD., are leaders in delivering workforce solutions and integrated services 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 full-time 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.