Senior Software Engineer – Billing & Subscription Platform

General Motors•Warren, MI

11d•Hybrid

About The Position

Join GM’s Digital Products Engineering organization and help define the next generation of our subscription and billing platform. As a Senior Software Engineer, you will lead technical domains, drive architecture across teams, and serve as an engineering leader for the billing platform. You will provide hands-on technical leadership for our Zuora integrations, scalable batch processing systems, revenue recognition systems, journal systems and onboarding experiences for millions of OnStar customers, while also setting the long-term architecture and standards for the broader billing platform. This is a senior individual contributor role: you will design, build, and optimize cloud-native solutions on Azure using modern frameworks and event-driven architectures, while influencing roadmaps, mentoring senior engineers, and collaborating across product, finance, tax, and eCommerce teams.

Requirements

Bachelor’s degree in Computer Science or related technical field, or equivalent practical experience.
5+ years of professional software engineering experience.
Significant experience with full-stack or backend development for enterprise integrations, ideally including Zuora or similar billing/subscription platforms.
Strong experience with batch processing and financial systems, including reliability, reconciliation, and data integrity considerations.
Hands-on Azure experience, including designing and migrating services to cloud-native architectures (containers, managed services, security, networking).
Proficiency in several of the following: Java, Spring Boot, Node.js, JavaScript/TypeScript, React/Angular.
Experience building microservices, event-driven systems with Kafka, and working with both relational and NoSQL databases.
Solid understanding of automated testing and quality practices, including frameworks such as JUnit, Jest, Cypress, or equivalents.
Proven ability to lead technical discussions, influence cross-team decisions, and deliver results in a complex, highly integrated environment.

Nice To Haves

Prior experience with billing systems (Zuora or similar) and/or financial applications, particularly in multi-region or multi-entity environments.
Prior experience with integration of payment gateways
Familiarity with Shopify and related storefront technologies, especially in the context of subscription or recurring billing.
Familiarity with Liquid or Hydrogen frameworks or similar technologies for building custom storefront experiences.
Demonstrated technical leadership and mentoring experience, including guiding senior engineers and influencing architecture at the organization level.
Experience modernizing legacy platforms into microservices and implementing event-driven architectures at scale.
Background working closely with finance, tax, and compliance partners on requirements for invoicing, taxation, and revenue recognition.

Responsibilities

Drive design and development of complex billing platform features and integrations, ensuring they are resilient, secure, and compliant across markets.
Design and evolve high-volume batch processing systems for financial transactions, with clear SLIs/SLOs and strong observability (logs, metrics, traces).
Shape end-to-end onboarding and account lifecycle experiences for OnStar and other connected services, partnering with product and UX to deliver seamless customer journeys.
Build microservices and event-driven systems leveraging Kafka.
Collaborate with product, business, and engineering teams to deliver scalable solutions.
Write clean, testable code across front-end and back-end components.
Lead migration of services to Azure using cloud-native best practices, including containerization, infrastructure-as-code, and secure-by-default configurations.
Collaborate across organizations (product, business, finance, tax, data, and other engineering teams) to define scalable solutions and align technical decisions with business priorities.
Mentor and coach engineers at multiple levels, providing guidance on design, coding, testing, observability, and operational excellence; help grow future technical leaders.