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# Senior Appian Developer

- **Company:** Koniag Services, Inc.
- **Location:** Washington, DC, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Automation of Tests, Configuration Management, Software Documentation, Information Systems, Data Integration, Data Integrity, Data Stores, Relational Databases, Software Engineering, Systems Integration, Management of Software Versions, Performance Testing, SOAPAPI, Appian, Information Technology, 3-tier Architectures, Code Restructuring, Web Api
- **Published:** October 30, 2026
- **Apply:** https://dejobs.org/x/x/57A5F38D48AB414C81B4A87BFFD8F3F2/job/

## About the Role

* Bachelor's degree in computer science, engineering, information systems, or a related field; additional relevant experience may substitute for education.
 * Seven or more years of application development experience, including at least four years developing production Appian solutions.
 * Advanced experience with Appian interfaces, process models, Record Types, data stores, integrations, security, expression rules, and deployment packages.
 * Experience supporting relational databases, REST/SOAP services, automated testing, source/configuration control, and production troubleshooting.
 * U.S. citizenship and the active security clearance or eligibility required for the assigned work by the start of performance, with ongoing eligibility thereafter.
 * Ability to communicate clearly with Government, technical, and business stakeholders and to maintain accurate work records in approved systems.
 * Ability to protect Controlled Unclassified Information and classified information, when assigned, and comply with required access, training, and handling procedures., * Appian Certified Senior Developer or Lead Developer credential.
 * Experience with Federal acquisition, Army contracting, CON-IT-derived applications.
 * Experience delivering Appian solutions within DLA PIEE, cArmy, or another DoD-authorized environment., * Advanced Appian design and development
 * Record Types, process models, and data integration
 * Secure troubleshooting and defect correction
 * Automated testing and controlled release
 * Technical mentoring and peer review

## Description

Tuknik Government Services, LLC Koniag Government Services (KGS) is seeking qualified candidates for this role supporting our U.S. Army customer on a large-scale Army contracting systems modernization and automation program. Designs, builds, tests, and sustains complex capabilities in Appian. The Senior Appian Developer leads difficult modernization and defect-correction work while protecting active contracting transactions, data integrity, security, and production availability. This is a contingent recruiting profile; the opening, employing subsidiary, compensation, work location, and staffing remain subject to final contract authorization.

Essential Functions, Responsibilities & Duties may include, but are not limited to:

 * Design and develop Appian applications, interfaces, process models, records, rules, reports, security groups, and reusable components.
 * Refactor legacy Custom Data Type patterns toward Record Types and explicit data mappings while preserving backward compatibility.
 * Modernize long-running process models using controlled versioning so active contracting actions complete without interruption.
 * Rebuild assigned workflows using validated process models and Government-approved acceptance criteria.
 * Develop integrations through Appian Connected Systems, Integration Objects, web APIs, and approved interface adapters.
 * Investigate Tier 3 defects, isolate root causes, implement permanent corrections, and add regression coverage.
 * Perform peer reviews and ensure solutions meet architecture, security, accessibility, performance, configuration, and documentation standards.
 * Create Appian-native unit and application-logic tests and support smoke, regression, end-to-end, API, and performance testing.
 * Prepare deployment packages, release notes, configuration records, rollback steps, and operational support documentation.
 * Mentor mid-level developers and contribute estimates, technical designs, and risk assessments during backlog refinement.