Appian Software Developer/Integrator

Leidos Holding$107K — $195K *
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's Degree and 8+ years of relevant experience or Master's with 6+ years
  • Active Top Secret/SCI clearance with Polygraph eligibility
  • Experience with Appian software
  • Proficiency in containerization technologies
  • Development experience in Python and Bash
  • Familiarity with CI/CD tools; GitLab or Jenkins preferred
  • Solid understanding of Agile methodologies

Responsibilities

  • Collaborate with system integration engineers to deploy release candidates
  • Conduct testing and staging for production releases
  • Integrate container-based Appian using Kubernetes and related tools
  • Maintain services for a big data pipeline with Kafka and Elasticsearch
  • Monitor automated tests for system integration
  • Manage project timelines and deliverables effectively
  • Encourage teamwork to enhance service quality

Benefits

  • Flexible work schedule
  • Occasional remote work options based on client needs
Full Job 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 (Al), 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 include:
  • 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

#NMECDTP-Leidos

Original Posting:
June 22, 2026

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.

About Leidos Holding

Leidos Holding Careers

Joining Leidos Holding presents an unparalleled opportunity to advance one's career with a leader in innovation and technology. The company offers a plethora of job opportunities aimed at fostering professional growth and development in a diverse and inclusive environment.

Explore Career Opportunities

Leidos Holding is actively seeking skilled professionals who are passionate about leveraging their expertise to drive innovation and leadership in their fields. With a variety of open positions, Leidos Holding provides a platform for individuals to challenge themselves in a dynamic work environment.

Innovation and Professional Growth

At Leidos Holding, innovation is at the core of everything they do. Employees are encouraged to think creatively and push boundaries. The company supports this drive for innovation through comprehensive professional development and diversity training programs that are designed to enhance skills and foster leadership.

Commitment to Diversity and Inclusion

Leidos Holding is committed to creating a workplace where diversity is not only recognized but celebrated. With a culture that values and promotes diversity, Leidos Holding ensures that all team members have the opportunity to contribute, learn, and grow.

Internship Programs

For those starting their career, Leidos Holding offers internship programs that provide a robust foundation in the industry. Internships are a great way to develop essential skills, gain valuable work experience, and build professional networks.

Benefits and Culture

Employees at Leidos Holding enjoy a range of benefits designed to support their professional and personal lives. The company culture is built on a foundation of respect and integrity, providing a supportive and collaborative environment where every team member is valued.

Join the Team

Leidos Holding is hiring! Explore job opportunities that match your skills and interests. Leidos Holding looks for driven, curious, and innovative individuals to join their team. Positions are available across various disciplines and experience levels.

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Prepare for Your Interview

To prepare for an interview at Leidos Holding, candidates should familiarize themselves with the company's missions and values, update their resumes, and be ready to discuss how their background and skills align with the position they are applying for.

Networking and Career Advancement

Leidos Holding encourages its employees to engage in networking within the company to discover new opportunities for career advancement. The leadership team at Leidos Holding is dedicated to supporting employees in their career paths with ample opportunities for networking and growth.

Explore Leidos Holding Jobs and Careers

Discover the exciting career opportunities at Leidos Holding today. With a commitment to employee growth, innovation, and diversity, Leidos Holding is the perfect place to advance your career. Check out the latest job listings and find your perfect fit at Leidos Holding.

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