Principal Software Development Engineer Job Details | Lumen Technologies

Lumen is a trusted network for the AI-powered world, connecting people, data, and applications. The Principal Software Development Engineer will lead technical initiatives to transform customer connectivity through enterprise solutions, focusing on API-first strategies and scalable integrations.

Responsibilities:

• Collaborate across Lumen and demonstrate leadership with a high level of engagement and ensuring customer focus with user communities, both internal and external
• Communication through Interaction with leadership to ensure open communication and handle situations involving conflict while promoting a positive company image
• Strongly drive an intentional automation first approach and leverage AI daily to improve efficiency to deliver
• Incorporate AI to deliver solutions and deliver AI enabled solutions
• Lead the design and implementation of MuleSoft-based integrations using API-led connectivity principles and define and govern enterprise API standards, including RAML/OpenAPI specifications, versioning, and lifecycle management
• Act as a bridge between engineering teams, ensuring that system interactions are clearly defined and consistently implemented
• Optimize system-to-system integrations across Salesforce, cloud platforms, and on‑prem systems using MuleSoft
• Ensure reliability, scalability, observability, and security of integrations, including error handling, retries, and monitoring
• Partner with platform, infrastructure, and security teams to align MuleSoft integrations with enterprise architecture standards and design, development of interactions between distributed systems, and services
• Define and document using engineering-level design patterns, including data exchange formats, API contracts, and automation triggers and collaborate with infrastructure, platform, and broader software teams to ensure alignment and clarity in system integration
• Establish and enforce engineering standards for development, design, documentation, and validation
• Serve as the engineering authority for cross-system automation and integration patterns involving SalesForce

Requirements:

• BS/BA or equivalent education and experience
• Strong software development skills surrounding SalesForce
• Strong hands-on experience designing and delivering integrations using MuleSoft
• Experience working with cross-functional engineering teams in a complex environment
• Excellent communication skills to include: verbal, written, and presentation
• US Citizen or GC holder
• 10+ years of experience engineering SaaS / cloud-native / cloud-ready concepts, systems integration, APIs, network technology and operations, or automation architecture
• Experience with MuleSoft Anypoint Platform, including API Manager, Runtime Manager, and CloudHub
• Experience designing API-led connectivity (System, Process, and Experience APIs)
• Familiarity with tools like common IDEs, automated test suites, CI/CD Pipelines, IaC, Swagger/OpenAPI, BPMN, or UML for documenting system interactions
• Experience with service orchestration platforms or workflow engines (e.g., Temporal, Camunda, Step Functions)
• Background in software development, systems engineering, technical architecture, or platform engineering