Senior Appian Developer

Sabel Systems Technology Solutions•Beavercreek, OH

About The Position

Sabel Systems designs and delivers digital engineering ecosystems for Department of Defense programs. The Senior Appian Developer will design, develop, and support enterprise-grade Appian solutions that automate complex business processes and integrate with legacy systems, cloud platforms, and third-party services. The role includes gathering requirements from DoD stakeholders, planning data migrations, implementing security and accessibility requirements, and supporting cybersecurity and Authority to Operate activities. The developer will work in Agile/Scrum teams, contribute to technical standards and documentation, troubleshoot complex issues, and communicate solutions to clients and stakeholders. The role also includes mentoring junior team members and applying Appian AI/ML capabilities to intelligent automation. Sabel Systems describes its work as implementing and operating digital engineering solutions at scale, with an emphasis on government ownership, traceable decisions, and avoiding vendor lock-in.

Requirements

  • U.S. citizenship or eligibility to obtain and maintain a security clearance.
  • At least 6 years of hands-on software development experience, including at least 3 years of direct professional Appian platform development.
  • Bachelor’s degree in Computer Science, Information Systems, Engineering, Mathematics, or a related field.
  • Strong SQL expertise and hands-on experience designing and optimizing database schemas; proficiency with Oracle, SQL Server, or similar relational databases.
  • Demonstrated experience designing and implementing API integrations using REST, SOAP, and web service technologies.
  • Experience with ETL tools and data migration best practices, including designing and executing complex data integration workflows.
  • Proficiency with Agile/Scrum methodologies and hands-on experience using Jira or similar project management tools.
  • Excellent communication and stakeholder management skills, including the ability to work effectively with technical and non-technical audiences.
  • Understanding of federal security standards, compliance requirements, and Section 508 accessibility guidelines.
  • Working knowledge of cybersecurity requirements and the ATO process, including RMF, security control implementation, and system security documentation.

Nice To Haves

  • Appian Lead Developer Certification (L4+) or multiple advanced Appian certifications.
  • Experience with Appian AI capabilities, including document processing (RPA), intelligent forms, and generative AI integrations.
  • At least 5 years of combined experience in software development and/or technical consulting in government or federal contracting environments.
  • Experience with AWS, Microsoft Azure, or Oracle Cloud in enterprise or government contexts.
  • Knowledge of SAFe or other enterprise agile methodologies.
  • Experience with DevOps practices, CI/CD pipelines, Git version control, and automated testing frameworks.
  • Familiarity with DoD/Federal standards, including FISMA, FedRAMP, and federal IT acquisition regulations (FAR/DFAR).
  • Experience with Business Process Management platforms, workflow automation, or process reengineering projects.

Responsibilities

  • Design and architect enterprise-grade Appian solutions, including process models, rules, CDTs, portals, and interfaces.
  • Gather, analyze, and document functional and technical requirements from DoD stakeholders and translate them into technical specifications and solution designs.
  • Develop API integrations using REST, SOAP, and JDBC to connect Appian applications with legacy systems, cloud platforms, and third-party services.
  • Design and execute ETL processes and data migrations, ensuring data integrity and compliance.
  • Develop and optimize SQL queries and relational database designs supporting Appian data models and integrations.
  • Implement secure authentication and authorization mechanisms and ensure compliance with security standards, FISMA requirements, and Section 508 guidelines.
  • Support cybersecurity and ATO activities by implementing security controls, preparing system security documentation, and coordinating with ISSOs and ISSMs.
  • Conduct code reviews and peer programming; produce technical documentation and maintain coding standards and implementation best practices.
  • Participate in Agile/Scrum ceremonies, manage tasks and deliverables using Jira, and collaborate with cross-functional teams.
  • Troubleshoot complex technical issues, perform root cause analysis, and implement preventive solutions to support system stability and performance.
  • Provide technical demonstrations and presentations, gather stakeholder feedback, and communicate technical solutions to technical and non-technical audiences.
  • Mentor junior developers and consultants and share Appian best practices.
  • Use Appian AI/ML capabilities to implement intelligent automation features such as document processing, chatbots, and predictive workflows.

Benefits

  • Healthcare
  • Financial assistance in the event of illness, injury, disability, loss of work, or death
  • Health savings accounts
  • Retirement plans
  • Paid time off
  • Paid holidays
  • Education and training program reimbursement
  • Competitive benefits and compensation package
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