Experion USA

Senior Application Engineer – Digital Products Locations: Cary, NC / Overland Park, KS / Remote (US) Role Overview We are seeking a highly skilled Senior Application Engineer to join the Digital & IT organization. This is a senior-level role for engineers who design, build, and operate modern, cloud-native digital products, and who bring strong technical judgment, architectural thinking, and ownership mindset to complex systems. You will work as part of a cross-functional product team alongside engineers, product managers, and UX designers to deliver internal and customer-facing software that supports digital transformation. This role emphasizes technical leadership, solution design, and building reliable, scalable, production-grade applications, while mentoring other engineers and raising the overall engineering bar. The Team This role sits within the D&IT Digital Products team, which enables people, projects, and businesses through modern platforms, data, analytics, and digital products. Our teams build and operate software using agile, product-oriented ways of working with a strong focus on quality, security, and reliability. Key Responsibilities As a Senior Application Engineer, you will: • Design, develop, test, and deploy complex frontend and backend components of custom web applications • Lead the technical design of features and services, balancing business needs with long-term maintainability • Build responsive, accessible user interfaces using TypeScript and React • Develop scalable backend services using TypeScript (NestJS) and Python • Design and implement real-time and event-driven functionality using WebSockets and messaging patterns • Define and evolve data access layers and service boundaries using Prisma or similar ORM tools • Apply sound architectural principles to ensure systems are secure, reliable, and scalable • Participate in and lead code reviews, technical discussions, and architecture decisions • Collaborate closely with product and UX partners to shape requirements and technical solutions • Contribute to CI/CD pipelines and support deployments to production environments • Diagnose and resolve complex issues in development and production systems • Create and maintain technical documentation to support long-term system understanding • Mentor and support other engineers through guidance, feedback, and example This role is an individual contributor position with significant technical ownership and influence. What Success Looks Like (First 6–12 Months) • Independently delivering complex, production-ready features across frontend and backend • Demonstrating strong understanding of the application architecture, domain, and operational context • Making sound technical decisions that improve system quality and team velocity • Contributing to architectural direction and reducing technical debt • Supporting and mentoring other engineers on the team • Proactively identifying risks, gaps, and opportunities for improvement Job Description 2 Minimum Qualifications • Bachelor’s degree in computer science, Engineering, or a related field, or equivalent practical experience • 6+ years of professional software development experience • Strong proficiency in TypeScript and modern JavaScript development • Extensive experience building frontend applications using React (Vite or similar tooling) • Strong experience developing backend services using Node.js frameworks (NestJS preferred) and/or Python • Experience designing APIs, service boundaries, and data models • Strong familiarity with Git-based version control and collaborative development workflows Preferred Qualifications • Experience building custom dashboards or data-rich user interfaces • Experience working with time-series, telemetry, or streaming data • Exposure to IoT, event-driven, or real-time systems • Familiarity with 12-Factor App principles and cloud-native application design • Exposure to CLEAN architecture and Domain-Driven Design (DDD) concepts • Experience with containerized applications (e.g., Docker) and container platforms (e.g., ECS) • Familiarity with infrastructure-as-code tools such as Terraform • Experience operating and supporting applications in production environments • Understanding of observability concepts such as logging, metrics, and monitoring • AWS certification (Associate or higher) is a plus