ServiceNow Engineer - Senior

Amentum; San Antonio (TX); On-site; USD 130,000 - 160,000; Full time

Benefits offered by this job

Health, dental, and vision insurance

Paid time off

401(k) matching

Educational reimbursement

Parental leave

Employee stock purchase plan

Tax-saving options

Disability and life insurance

Job summary

Amentum seeks a Senior ServiceNow Engineer to join our IT team in San Antonio, TX. You will design, develop, and administer ServiceNow applications, interfaces, and integrations to support ITSM and ITOM in a DoD-focused environment.

The role requires TS/SCI eligibility, 5+ years in software design or enterprise platforms, 3+ years ServiceNow experience, and strong JavaScript/REST/SOAP skills. Travel up to 10% within 75 miles is expected; on-site work is required with a focus on security and ITIL

Qualifications

• Active Top-Secret clearance with SCI eligibility.
• 5 years of software design/enterprise platform experience.
• 3+ years ServiceNow administration and development.
• Proficiency with JavaScript, HTML, CSS.
• Experience with LDAP/SSO and REST/SOAP integrations.
• Strong ITIL knowledge and governance principles.
• able to work 40 hours/week (Mon-Fri).
• Willingness to travel 5-10% within 75 miles.

Responsibilities

• Design, develop, configure, and maintain ServiceNow applications, modules, and integrations for ITSM/ITOM.
• Administer on-prem or hosted ServiceNow instance ensuring performance and availability.
• Implement core applications: Incident, Change, Problem, Knowledge, CMDB, Service Portal.
• Develop UI policies, business rules, Script Includes, client scripts, and workflows.
• Manage data imports and integrations via REST/SOAP, LDAP, etc.
• Collaborate with cybersecurity and infra teams on DoD security requirements.
• Support patching, upgrades, and releases with minimal disruption.
• Participate in Agile sprints and technical design sessions.

Skills

Top-Secret clearance

5+ years software design/enterprise

3+ years ServiceNow admin & dev

JavaScript/Web tech

LDAP/SSO integrations

ITIL knowledge

Full-stack ServiceNow

Travel 5-10%

Strong communication

Education

High School Diploma

Associate IT degree (preferred)

Tools

ServiceNow CSA

Glide scripting

REST/SOAP APIs

Job description

Purpose and Impact:

In support of a challenging, critical, and rewarding program that provides integrated voice, video, and data services throughout the Information Technology lifecycle, Amentum is seeking a ServiceNow Engineer - Senior to join our dynamic team of IT professionals dedicated to fostering a positive and collaborative work environment. You must be a critical thinker, have a strong work ethic, and be able to work independently or as a member of a team in a dynamic environment. We value candidates who are detail-oriented while also being able to think and react quickly to emerging and unique problem sets. To be successful, you must be able to rapidly adapt and learn how to operate the front and back end of new products and processes.

Work Schedule: 5 Days (Mon – Fri); 8 hrs/Day; 40 hrs/wkly

Essential Responsibilities:

The duties and responsibilities of the Senior ServiceNow Engineer include, but are not limited to the following:

• Design, develop, configure, and maintain ServiceNow applications, modules, and integrations in support of enterprise ITSM and ITOM capabilities.


• Administer and sustain the on-premises/self-hosted ServiceNow instance, ensuring performance, compliance, and availability.


• Implement and enhance core applications such as Incident, Problem, Change, Knowledge, CMDB, Service Catalog, and Service Portal/Employee Center.


• Develop custom applications, UI Policies, Business Rules, Script Includes, Client Scripts, and Workflow Studio logic aligned with business requirements.


• Manage data imports, transformations, and integrations via REST/SOAP APIs, LDAP, and other data exchange mechanisms.


• Apply CSDM principles to maintain accurate service mapping and CMDB data relationships.


• Partner with cybersecurity and infrastructure teams to ensure adherence to DoD security and accreditation requirements.


• Support patching, upgrades, and release deployments while ensuring backwards compatibility and minimal service disruption.


• Participate in Agile sprint cycles, backlog grooming, and technical design sessions.


• Conduct impact analyses, architectural reviews, and document new functionality or integrations.


• Continuously research emerging ServiceNow features, plugins, and best practices to improve platform maturity.


• Troubleshoot, resolve, and document complex technical issues; provide Tier 3 escalation support.


• Collaborate with stakeholders and cross-functional teams to align ServiceNow capabilities with organizational objectives.

Minimum Requirements (Knowledge, Skills, and Abilities):

• Must have active Top-Secret clearance with SCI or TS with the ability to acquire SCI


• 5 years of relevant experience in software design, development, or enterprise platform engineering


• 3+ years of ServiceNow platform administration and maintenance (on-prem or hosted), and ServiceNow development experience (Glide scripting, Workflow Studio, UI customization, integrations)


• Proficiency with Web technologies such as JavaScript, Ajax, HTML, Jelly, and CSS


• Experience with LDAP, SSO, and Web Service integrations (REST/SOAP APIs)


• Strong understanding of ITIL practices and ServiceNow governance principles


• Demonstrated ability to perform both operational sustainment and full-stack development within the ServiceNow ecosystem


• Must be able to work a 40-hour work week, normally Monday through Friday.


• Ability to work overtime during critical peaks and be available to meet last-minute requests for overtime if needed.


• Ability to travel (5-10%) primarily within 75 miles.


• Familiarity with MS Office applications such as Excel, Word, Outlook, SharePoint, Project, and Visio.


• Exceptional attention to detail; excellent verbal and written communication skills; strong critical thinking, organizational, time-management, and problem-solving skills.


• Ability to work both independently and as part of a team in a dynamic environment.

Security Clearance Required:

• Must have active Top-Secret clearance with SCI or TS with the ability to acquire SCI

Minimum Education:

• High School Diploma

Minimum Years of Experience:

• 5 years of relevant experience

Required Certifications:

Must possess or be able to obtain a ServiceNow Certified System Administrator (CSA) Certification and a one of the following 8140 IAT Level II or III baseline certifications before start date:

• Level II certs include – CCNA Security, CySA+, CND, Security+ CE


• Level III certs include – CASP CE, CCNP Security, CISA, CISSP (or Associate)

Preferred Qualifications:

• Associate degree in IT related field (or better)


• ServiceNow Certified Application Developer (CAD) Certification


• SerciceNow Certified Implementation Specialist (CIS) in ITSM, ITOM, or SPM


• Background working within DoD or government IT service management environments


• ITIL 4 Foundation/Master

#javelin #jointhepack #servicenow #itil #itsm #itom

This position is not designated as a safety sensitive position.

As part of our commitment to maintaining a safe and compliant work environment, Amentum is a drug-free workplace and requires all personnel to comply with company drug and alcohol policies as a condition of employment. Employment is contingent upon successful completion of the drug screening process. Please note that this may include pre-hire screening for marijuana, as well as other federally controlled substances due to Amentum’s role as a federal contractor and trusted partner to the US Government.

Other Responsibilities:

Safety

Amentum enforces a safety culture whereby all employees have the responsibility for continuously developing and maintaining a safe work environment. As appropriate, each employee is responsible for completing all training requirements and fulfilling all self-aid/buddy aid responsibilities, participating in emergency response tasks and serving on safety committees and teams.

Quality

Quality is the foundation for the management of our business and the keystone to our goal of customer satisfaction. It is our policy to consistently provide services that meet customer expectations. Accordingly, each employee must conform to the Amentum Quality Policy and carry out job activities in compliance with applicable Amentum Quality System documents and customer contracts. Each employee must read and understand his/her Quality Management and Customer Satisfaction responsibilities.

Procedure Compliance

Each employee must read, understand and implement the general and specific operational, safety, quality and environmental requirements of all plans, procedures and policies pertaining to his/her job. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status.

Compensation Details:

$130,000 - $160,000

The compensation range or hourly rate listed for this position is provided as a good‑faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits Overview:

Our health and welfare benefits are designed to support you and your priorities. Offerings include:

• Health, dental, and vision insurance


• Paid time off and holidays


• Retirement benefits (including 401(k) matching)


• Educational reimbursement


• Parental leave


• Employee stock purchase plan


• Tax‑saving options


• Disability and life insurance


• Pet insurance

Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.

Original Posting:

08/24/2026 - Until Filled

Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.