Senior Appian Developer Job Washington District of Columbia USA,Software Development

Tuknik Government Services, LLC a Koniag Government Services company, is seeking a Senior Appian Developer with a Secret security clearance to support TGS in supporting our government customer in the DC Metro area.

This position is for a Future New Business Opportunity.

Benefits include medical, dental, and vision insurance, 401(k) retirement plan, paid time off, paid parental leave, life and disability insurance, flexible spending accounts, commuter benefits and tuition reimbursement.

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.

Education and Experience

Required:

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.

Education and Experience Desired:

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.

Required Skills and

Competencies:

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

Work Environment and Travel:

Work may occur remotely when authorized, at Government facilities, or in controlled office and data-center environments. Work involving classified information or SIPRNet will be performed at a Government-approved secure location using authorized systems. The role generally supports Government business hours, with occasional release, incident-response, maintenance-window, or approved travel requirements. Reasonable…