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Lead ServiceNow Developer

Herndon, VA, United States Full-time
Application ArchitectServiceNow DeveloperTechnical ArchitectSolution ArchitectEngineering Manager

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MANTECH seeks a motivated, career and customer-oriented Lead ServiceNow Developer to serve as the technical authority for our internal enterprise ITSM environment in Herndon, VA. This is a hybrid position. 


This role focuses on hands-on custom development and complex enterprise system integrations to ensure seamless interoperability across MANTECH’s internal IT ecosystem.


Responsibilities include but are not limited to:


  • Diagnosing and resolving platform performance bottlenecks, integration failures, and legacy code issues.
  • Collaborating with the Product Manager and enterprise infrastructure/security teams to execute technical requirements according to ServiceNow best practices.
  • Architecting, designing, and building secure, scalable integrations between ServiceNow and enterprise systems using REST, SOAP, Integration Hub, MID Servers, and custom web services.
  • Leading complex script development using JavaScript, Script Includes, Business Rules, Client Scripts, Flow Designer, and Service Portal components.
  • Providing technical guidance, code reviews, and architectural oversight to mid- and junior-level developers on the team.
  • Maintaining system baselines and configuration management items to align with enterprise architecture standards.
  • Recommending, and when approved, implementing process and policy improvements across the ServiceNow platform.

Minimum Qualifications:


  • Bachelor’s degree in Computer Science, Software Engineering, or a related technical field.
  • 6+ years of hands-on ServiceNow development experience, with at least 2 years in a technical lead role.
  • Proven experience designing and implementing complex enterprise integrations using Integration Hub, Webhooks, API endpoints, and OAuth.
  • Advanced proficiency in JavaScript, HTML/CSS, JSON/XML, and relational database concepts.
  • ServiceNow Certified Application Developer (CAD) certification.
  • Experience working across a large team to drive technical agenda and managing complex, intertwined systems and data flows.

Preferred Qualifications:

  • ServiceNow Certified Implementation Specialist (CIS) in one or more ITSM modules.
  • Experience with automated testing tools (ATF) and DevOps pipeline integrations.
  • Experience creating, maintaining, and communicating complex information technology documentation.
  • Self-starter with excellent people skills to work across teams and drive change throughout an organization.

Clearance Requirements:

  • U.S. Citizen 

Physical Requirements:

  • Must be able to remain in a stationary position 50%.
  • Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
  • Frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.

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