Appian Software Developer/Integrator

Description Leidos is designing, developing, deploying, and operating a DoD-wide Tasking, Collection, Processing, Exploitation, and Dissemination (TCPED) workflow management platform for Open Source Intelligence (OSINT). As a TS/SCI cleared Appian Software Developer/Integrator on our team, you will play a critical role in ensuring the platform is built to maximize mission outcomes, is user-friendly, and adheres to IC standards, policies, and practices. We integrate off the shelf and new development efforts to sustain and enhance existing architecture and by leveraging cloud-based computing, artificial intelligence (AI), machine learning (ML) and cross-domain transfer systems to provide cutting edge requirements management, task coordination, data exploitation, enrichment, triage, and analytics capabilities to Defense and Intelligence Community members. Our program advances the state of the art in mission-focused big data analytics tools and micro-service development spanning the breadth of Agile sprints to multiyear research and development cycles. While the work is primarily conducted on-site at our client location in Bethesda, MD, we offer a flexible schedule and, occasionally, some tasks may be performed remotely. Percentage of remote work will vary based on client requirements/deliverables. Key Responsibilities Work with a team of system integration engineers to successfully deploy release candidates to production environment. Participate in test, staging and production deployment. Integrate container-based-Appian using Kubernetes, Rancher, Helm, and other DevOpsSec integration tools. Assist in the maintenance of services and procedures for a big data pipeline which includes Kafka, Elasticsearch, and several in-house written python/java micro services running on Kubernetes. Monitor automated system integration tests to identify failed modules and components. Manage individual project priorities, deliverables, and deadlines. Foster an environment of collaboration with the different team members in the goal of providing quality service and product to our customer. To be successful in this role you need these skills (required) Bachelor's Degree and 8+ years of prior relevant experience or Masters with 6+ years of prior relevant experience Must possess an Active Top Secret/SCI clearance and ability to obtain and maintain a Polygraph Experience with Appian Experience with containerization Development and/or scripting experience, especially Python and Bash Experience with DevOps practices and tools including Continuous Integration/Continuous Delivery (CI/CD) tools and practices, especially Gitlab or Jenkins Experience with Agile practices Strong verbal and written communication skills Enthusiastic with the ability to work well on a team and a self-starter who can work on their own You will wow us even more if you have these skills Experience with systems at scale Kafka or other message passing systems Experience on a production/ enterprise system Cloud infrastructure experience Appian certification Experience with any of the following technologies: Java Kubernetes monitoring, e.g., Prometheus / Grafana Appian integration with PostgreSQL or other DB SALT for deployment automation GraphQL Elasticsearch, Kibana, and Logstash, specifically admin experience Helm and Helmfile Possess at least one DoD 8570.01-M IAT Level II or higher certification, e.g., CCNA Security, CySA+, Security+ CE, SSCP, CISSP (or Associate) Ability to obtain Privileged User Account (PUA) certification per DoD 8570 policy Original Posting: June 22, 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: $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. Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws. #J-18808-Ljbffr Leidos Inc