Junior Software Developer

Lensa; McLean (VA); On-site; USD 75,000 - 110,000; Full time

Job summary

A leading career site seeks a motivated Junior Software Developer for the McLean, VA office of ManTech. This role involves leveraging expertise in Linux, Ruby on Rails, and telephony systems to support critical infrastructure. You will design and maintain applications while ensuring the stability and security of systems.

Qualifications

• BA/BS and 2 years of experience, or equivalent 6 years of education/work combined.
• Experience with Ruby and Ruby on Rails, or Python with Django/Flask.
• Strong communication skills to work with cross-functional teams.

Responsibilities

• Design, implement, and maintain web applications using Ruby/Rails.
• Integrate telephony systems with voice media gateways.
• Manage Linux servers and ensure application performance.

Skills

Ruby programming

Linux server management

Telephony systems integration

Communication

Education

BA/BS

Tools

Ruby on Rails

PowerBuilder

Korn shell

Job description

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Lensa is the leading career site for job seekers at every stage of their career. Our client, ManTech, is seeking professionals in McLean, VA. Apply via Lensa today!

ManTech seeks a motivated, career and customer-oriented Junior Software Developer to join our team in McLean, VA . In this role, you will be an experienced Linux and Ruby on Rails Developer with a strong background in Telephony Engineering to serve on a Dedicated Support Team of Network Telephony Installers supporting the Voice Program Recap Office (VPRO). You will leverage your expertise in Linux systems, Ruby programming, Ruby on Rails, and telephony systems to design, develop, and maintain voice media gateways that integrate with telephony infrastructure.

Responsibilities Include, But Are Not Limited To

• Design, implement, and maintain web applications using Ruby and Ruby on Rails.
• Work on integrating telephony systems (e.g., VoIP, analog, ISDN) along with voice media gateways and associated service modules.
• Manage and configure Linux servers (Ubuntu, CentOS, etc.) for hosting applications, ensuring performance, stability, and security.
• Develop and Test on Linux based servers. Must be capable of developing and installing PowerBuilder based programs and Korn shell-based servers.
• Troubleshoot, configure, and optimize telephony software.
• Work independently developing and testing servers.
• Monitor server performance, troubleshoot issues, and optimize systems for scalability and reliability.
• Maintain clear technical documentation for telephony integration and deployment processes.
  
  

Minimum Qualifications

• BA/BS and 2 years of experience, or a combination of education and work experience equivalent to 6 years.
• Strong experience with Ruby programming and understanding of the Ruby on Rails framework, or the ability to learn Ruby with strong experience with Python with Django or Flask.
• Strong verbal and written communication skills to interact effectively with cross-functional teams.
• Experience editing, updating, and modernizing legacy code.
  
  

Preferred Qualifications

• Experience integrating telephony systems with web applications (e.g., handling inbound/outbound calls, IVR, call routing).
• Knowledge of security best practices for telephony, server administration, and web applications.
• Knowledge and hands on experience with telephony systems and Linux server management, including installation, configuration, troubleshooting, and performance optimization.
• Qualified in Oracle Database Administrator.
• Experience provisioning telephony services.
  
  

Clearance Requirements

• Must have a current/active TS/SCI with Polygraph.
  
  

Physical Requirements

• Must be able to remain in a stationary position at least 50% of the time. Constantly operate a computer, phone, and other office equipment for extended periods of time.
  
  

ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

If you are a qualified individual with a disability and require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please email us at [e-mail] and provide your name and contact information.

Seniority level

• Seniority level

  Entry level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Engineering and Information Technology

• Industries

  IT Services and IT Consulting

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