Principal Developer Consultant – National Security

Groundswell

Principal Appian Developer Consultant leading implementation teams and providing expert guidance in federal agencies. Focusing on Appian solutions and technical success for complex projects across various locations.

Posted 6/6/2026full-timeMcLean • Virginia, West Virginia, Wisconsin, Wyoming • 🇺🇸 United StatesLead💰 $128,590 - $180,783 per yearWebsite

Tech Stack

Tools & technologies

MariaDBMySQLOracleRDBMSSOAPSQL

About the role

Key responsibilities & impact

Lead implementation teams through complex technical solutions with Appian and tangential technologies
Guides clients on Agile, QA, and governance for multi-app platform implementations
Supports design, development, and test activities across multiple client projects
Supports large scale implementation teams consisting of multiple development pods
Guide clients on architecture design, platform scalability, configuration management, DevSecOps, and other program initiatives as needed to drive technical success
Ensure solutions are built for scale and performance
Create and document implementation best practices as well as knowledge base articles for internal enablement
Provide thought leadership on process improvement
Support internal solutions, infrastructure, and tools
Mentorship, training, and enablement of resources

Requirements

What you’ll need

5+ years of experience with Appian solutions
5+ years of related IT experience
Bachelor’s Degree (or equivalent) or higher in Computer Science, Information Systems, Systems Engineering, or related area
Active Lead Certification
Expert experience with Appian delivery using an Agile methodology
Strong technical design and implementation and problem-solving skills
Strong communication skills and ability to convey complex concepts in an easy-to-understand manner, both verbally and written; active listening skills to gather key information from internal and external partners; analytical and strategic foresight
Strong organizational skills, attention to detail, ability to work in a high-paced environment, multi-task (prioritize and manage), and work both independently and as a team (team-building skills including courtesy, professionalism, and a “do whatever it takes attitude”)
RDBMS (e.g. Oracle, SQL Server, MySQL/MariaDB)
Web services, Integrations and Middleware (e.g., RESTful/SOAP, Mule/IIB/Fusion)
US Citizenship required
Must be able to obtain and maintain a Secret level clearance. Preference will be given to candidates who already have a Secret clearance.
Preference will be given to candidates local to the DC Metro area.
Must be willing to travel (0-15%) for client meetings as needed

Benefits

Comp & perks

Comprehensive medical, dental, and vision plans
Flexible Spending Account
4% 401K Match (immediate vesting)
Paid Time Off
Tuition reimbursement, certification programs, and professional development
Flexible work schedule
On-site gym and childcare option

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Appian solutionsAgile methodologytechnical designimplementationproblem-solvingRDBMSweb servicesintegrationsmiddlewareconfiguration management

Soft Skills

communication skillsactive listeningorganizational skillsattention to detailmulti-taskingteam-building skillsmentorshiptrainingprocess improvementthought leadership

Certifications

Lead Certification