Join us in transforming how technology serves those who serve.
At Leidos, we're not just delivering solutions – we're pioneering the future of defense and intelligence technology. Our diverse teams of innovators unite around a singular purpose: empowering our customers to succeed in their critical missions. We believe in leading with integrity, investing in our communities, and building sustainably for tomorrow.
Shape the future of digital defense.
Our Digital Modernization sector is at the forefront of next-generation technology, architecting cutting-edge solutions in cyber defense, logistics optimization, security operations, and decision intelligence. We're the minds behind the mission-critical systems that keep our nation secure.
Ready to engineer solutions that matter?
Primary Responsibilities:
The Digital Modernization Sector at Leidos is seeking a dynamic Sr Appian System Administrator to support cloud modernization initiatives for the United States Coast Guard (USCG) at Command, Control, Communication, Computer, Cyber, and Intelligence Service Center (C5ISC) in the Alexandria, VA area. This role is part of a high-impact program focused on delivering secure, scalable cloud solutions that enable operational agility and resilience across the USCG enterprise.
As the Appian System Administrator, you will have strong expertise in Appian platform administration. This role also includes responsibility to support the administration, maintenance, optimization, and governance of enterprise low-code/no-code platforms. The ideal candidate will also have experience supporting or integrating other low-code/no-code solutions such as ServiceNow, Microsoft Power Platform, Pega, Salesforce, OutSystems, Mendix, or similar platforms.
Key Responsibilities:
- Administer and maintain the Appian platform across development, test, staging, and production environments.
- Manage Appian upgrades, patches, deployments, backups, and disaster recovery processes.
- Configure and maintain:
- User access and security roles
- Authentication (SSO, LDAP, SAML, OAuth)
- Infrastructure and environment settings
- Monitoring and alerting
- Troubleshoot platform issues, performance bottlenecks, and integration failures.
- Support CI/CD processes and deployment automation for Appian applications.
- Collaborate with developers, architects, infrastructure teams, and business stakeholders.
- Establish and enforce governance standards, operational procedures, and best practices.
- Monitor system health, capacity planning, and platform performance metrics.
- Support integrations with enterprise systems, APIs, databases, and cloud services.
- Participate in platform modernization and low-code/no-code strategy initiatives.
- Provide administration and operational support for additional low-code/no-code platforms where applicable.
Basic Qualifications:
- Requires BS and 8+ years of prior relevant experience or Masters with 6+ years of prior relevant experience, additional years of experience will be accepted in lieu of a degree.
- 3+ years of experience administering and supporting Appian platforms in enterprise environments.
- Strong knowledge of:
- Appian platform architecture and components
- Environment administration and platform health monitoring
- Application migration and deployment processes across development, test, and production environments
- Security administration, user provisioning, and role-based access controls
- Appian platform upgrades, patching, maintenance, and high-availability configurations
- Experience supporting at least one additional low-code/no-code platform, such as:
- Microsoft Power Platform
- ServiceNow
- Pega
- Salesforce Platform
- UiPath
- Experience troubleshooting and resolving platform, application, and integration issues within production environments.
- Familiarity with:
- Windows and/or Linux server administration
- Cloud environments such as AWS, Azure, or Google Cloud Platform (GCP)
- SQL databases and database connectivity
- REST and SOAP APIs
- DevOps practices and CI/CD pipeline tools (e.g., Azure DevOps, Jenkins, GitLab)
- Experience supporting platform security, compliance, patch management, and operational best practices.
- Strong analytical, problem-solving, and troubleshooting skills.
- Excellent verbal and written communication skills, with the ability to effectively document processes, procedures, and technical solutions.
- Ability to work collaboratively across infrastructure, development, cybersecurity, and business stakeholder teams.
Preferred Qualifications:
- Appian Certified System Administrator certification.
- Experience with containerized or cloud-native deployments.
- Knowledge of infrastructure automation tools.
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:June 10, 2026For 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.
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.
Skills Required
- Bachelor's degree and 8+ years relevant experience or Master's with 6+ years (or additional experience in lieu of degree)
- 3+ years administering and supporting Appian platforms in enterprise environments
- Knowledge of Appian platform architecture, components, and environment administration
- Experience with Appian upgrades, patching, maintenance, high-availability, and disaster recovery
- Experience with user access, security roles, and role-based access controls for Appian
- Experience supporting at least one additional low-code/no-code platform (Microsoft Power Platform, ServiceNow, Pega, Salesforce Platform, UiPath, etc.)
- Experience troubleshooting and resolving platform, application, and integration issues in production
- Familiarity with Windows and/or Linux server administration
- Familiarity with cloud environments (AWS, Azure, or GCP)
- Familiarity with SQL databases and database connectivity
- Familiarity with REST and SOAP APIs
- Experience with DevOps practices and CI/CD tools (e.g., Azure DevOps, Jenkins, GitLab)
- Experience supporting platform security, compliance, and patch management
- Strong analytical, problem-solving, troubleshooting, and written/verbal communication skills
- Ability to collaborate across infrastructure, development, cybersecurity, and business stakeholder teams
- Appian Certified System Administrator certification
- Experience with containerized or cloud-native deployments
- Knowledge of infrastructure automation tools
Leidos Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Leidos and has not been reviewed or approved by Leidos.
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Healthcare Strength — Healthcare coverage is described as comprehensive, with multiple plan options, low office-visit copays in some plans, and access to mental health and wellness support tools. The availability of HSA/FSA options and employer contributions is positioned as a meaningful part of the total package.
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Retirement Support — Retirement benefits are framed as a strong component of total rewards, highlighted by a 401(k) match and immediate vesting in the standard package. The Employee Stock Purchase Plan is also presented as an additional long-term wealth-building feature.
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Wellbeing & Lifestyle Benefits — Wellbeing and lifestyle supports extend beyond core insurance, including wellness programs, fitness-related stipends, and assistance resources. Work flexibility and related perks are also included as part of the broader rewards experience.
Leidos Insights
What We Do
We Are Leidos For 50 years we have been tackling some of the biggest problems that face our nation and our world. OUR MISSION Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead.
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