Senior ServiceNow Developer

The Digital Modernization Sector has an opening in support of the End User Centric IT Support (ECIS) Contract for Centers for Medicare and Medicaid Services (CMS) is looking to improve and advance the organization. Our program is focused on the delivery of end-user centric IT technology solution to our customer CMS where we are challenged to provide ongoing innovative and seamless experience while using CMS systems, applications and solutions, provide proactive secure development of IT integrations, concepts, and designs across the CMS enterprise and integrate end-user computing devices, conference room technology, infrastructure hardware and software, and user applications into a streamlined and seamless experience across the CMS user base.

We foster a positive end-user experience while ensuring protection of the data. As Sr. Service. Now Developer you will perform configuration, development, support, and maintenance of the Service. Now implementation. Works with external and internal stakeholders to understand, propose, and deliver digital transformation solutions with emphasis on request fulfillment, automated workflows through Service.

Now Service Catalogs and key ITIL processes like Request, Incident, Problem, Change, Knowledge, and other modules. Preference will be to candidates based on the East Coast who are able to travel to the office when needed Primary Responsibilities Under the direction of the Development and Engineering Lead, Product Manager, Program Manager and Deputy Program Manager, you will be responsible, to include, but not limited to: Develop custom workflows utilizing modern web technologies.

Configure out of the box workflows and create/maintain custom workflows. Integrate Service. Now applications with 3rd party partners. Rapidly prototype new solutions. Design and develop solutions that leverage Service. Now modules like ITSM, Discovery, CMDB, Knowledge, and ITOM using configuration and custom JavaScript.

Troubleshoot and resolve problems. Orchestrate and automate tasks. Responsible for the design and build of Service. Now Applications and integration to other applications and platforms, including architecture, languages, best practices, and methodologies in an Agile Scrum environment. Provide strong development and project on-track and on-task and collaborate on an ongoing project in both new and enhancements development between engineers, developers, analyst, and other team members.

Follow, maintain, and apply documentation best practice policies, procedures, and process throughout Service. Now development. Work closely with business and IT teams to gather input to support ongoing business needs for Service Now configuration, implementation, and support. Review and apply any additional UI/UX requirements from external and internal team and align into Service.

Now development. Developing user friendly catalog items with experience writing orchestration workflows such as Content Management, Web Services Utilizes available programming methodologies and languages and adhere to coding standards, procedures and techniques while contributing to the technical code documentation. Support data migration as needed.

Design and implement solutions following established Configuration Management policies and standards. Integrate data from multiple data sources into a unified CMDB, ensuring data quality and integrity are maintained.

Basic Qualifications

Bachelor’s Degree with 8 – 12 years of relevant experience or master’s with 6-10 years of prior relevant experience. Additional years of work experience in lieu of degree is acceptable. At least 6 years of experience with the design, development, and support of technology infrastructure. Service. Now Certified Application Developer At least 4 years of Service.

Now development. Experience with Service. Now upgrades. Experience with JavaScript/GLIDE, HTML5. Assist establishing coding standards to help with consistency. Strong analytical, problem-solving, and decision-making capabilities. Experience integrating Service. Now with external systems through SOAP or REST web services.

Experience using Workflow Editor to configure workflows. Service. Now Certified Application Developer and/or Service. Now Certified System Administrator. ITIL v3 Foundations Certification a plus. Experience with JavaScript, Ajax, CSS, HTML. Experience with AngularJS, Bootstrap, j. Query. Integration experience (REST, SOAP, JSON/XML).

Ability to be a self-starter, pay strict attention to detail, and multitask across multiple projects and clients in a fast-paced, team-based environment. Experience or familiarity with Agile development and testing methodology. All candidates supporting the CMS programs must have lived in the United States at least three (3) out of the last five (5) years prior to be considered.

Must be able to obtain and maintain a public trust clearance If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history.

We're already at step 30 — and moving faster than anyone else dares. Original Posting: July 15, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range

Pay Range $107,900.00 - $195,050.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.