Application Developer IV

Location:

Work from home (Pennsylvania)

Shift:

Days (United States of America)

Scheduled Weekly Hours:

40

Worker Type:

Regular

Exemption Status:

Yes

Job Summary:

Reviews, analyzes, modifies, creates, debugs, designs, and tests applications using modern development methodologies and tools. Provides key insight in design and application architecture discussions. Serves as a key contributor on a multidisciplinary team and participates in all aspects of the application development lifecycle to ensure successful delivery.

Additionally, this role leads the definition and implementation of an API-led connectivity strategy, driving the design and development of a reusable API network that enables scalable, secure, and governed integrations across the organization.

Job Duties:

• Responsible for the process, life cycle, and creation of the software to assist users in completing a computer task or program.
• Implements code and documents all system changes based on assignments and timelines.
• Develops and follows department coding and user interface guidelines.
• Provides code review, testing, debugging, technical documentation, general testing instructions, go-live planning, assistance in go-live moves, and post-live support.
• Communicates all progress, roadblocks, and issues to the team and management in a timely manner.
• Collaborates with team members to identify and resolve issues, improve system performance, and ensure code quality.
• Provides training and documentation to team members on new development assignments.
• Trains and mentors staff members.
• Assists in the development and documentation of a technical approach for a solution to the team stakeholders.
• Define and implement an enterprise API-led connectivity strategy aligned with business and IT goals
• Design and evolve a reusable API network, including System, Process, and Experience APIs
• Establish API architecture standards, governance models, and best practices
• Lead API design efforts using industry-standard specifications: RAML, OpenAPI Specification (OAS 3.x), AsyncAPI
• Create and maintain architecture diagrams and graphical representations of integration patterns, data flows, and system interactions
• Architect and implement integrations using MuleSoft Anypoint Platform (CloudHub 2.0)
• Define and enforce API lifecycle governance including design, development, deployment, versioning, and retirement
• Design and implement API proxies, policies, and traffic management controls
• Ensure APIs are secure by design, applying policies such as: OAuth 2.0 / OIDC JWT validation Rate limiting / throttling Threat protection
• Promote API reusability and discoverability through proper documentation and API cataloging
• Partner with security, infrastructure, and platform teams to ensure scalability, resilience, and compliance
• Provide technical leadership in architecture reviews, design sessions, and integration strategy discussions

Work is typically performed in an office environment. Accountable for satisfying all job specific obligations and complying with all organization policies and procedures. The specific statements in this profile are not intended to be all-inclusive. They represent typical elements considered necessary to successfully perform the job.

*Relevant experience may be a combination of related work experience and degree obtained (Associate’s Degree = 2 years; Bachelor’s Degree = 4 years; Master’s Degree = 6 years).

Position Details:

Required Skills:

API design and development (REST, API-led connectivity); RAML, OpenAPI (OAS3), AsyncAPI; MuleSoft Anypoint Platform (including CloudHub 2.0); System, Process, Experience API layering; API proxies, gateways, and policy implementation; API security (OAuth 2.0, JWT, TLS, rate limiting); software development (Java, Python, or JavaScript); CI/CD and Git-based workflows; debugging, performance tuning, and troubleshooting; architecture diagrams and technical documentation; collaboration and participation in design discussions

Optional / Preferred Skills:

Enterprise API strategy and API network design; event-driven and asynchronous architecture; microservices and distributed systems; MuleSoft certified developer (Mule 4); MuleSoft certified platform architect (MCIA Level 1); MuleSoft certified integration architect (MCIA Level 2); cloud platforms (AWS, Azure, GCP); CI/CD pipeline optimization and infrastructure-as-code; API analytics, monitoring, and observability; API cataloging and developer portals; technical leadership and mentoring experience

Education:

High School Diploma or Equivalent (GED)- (Required)

Experience:

Minimum of 10 years-Relevant experience* (Required)

Certification(s) and License(s):

Skills:

Application Development Tools, Application Testing, Communication, Critical Thinking, Database Structures, Technical Skills, Working Independently

OUR PURPOSE & VALUES: Everything we do is about caring for our patients, our members, our students, our Geisinger family and our communities.

• KINDNESS: We strive to treat everyone as we would hope to be treated ourselves.
• EXCELLENCE: We treasure colleagues who humbly strive for excellence.
• LEARNING: We share our knowledge with the best and brightest to better prepare the caregivers for tomorrow.
• INNOVATION: We constantly seek new and better ways to care for our patients, our members, our community, and the nation.
• SAFETY: We provide a safe environment for our patients and members and the Geisinger family. 

We offer healthcare benefits for full time and part time positions from day one, including vision, dental and domestic partners. Perhaps just as important, we encourage an atmosphere of collaboration, cooperation and collegiality.

We know that a diverse workforce with unique experiences and backgrounds makes our team stronger. Our patients, members and community come from a wide variety of backgrounds, and it takes a diverse workforce to make better health easier for all.  We are proud to be an affirmative action, equal opportunity employer and all qualified applicants will receive consideration for employment regardless to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or status as a protected veteran.