Mantech

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.