Staff Software Engineer – Billing & Subscription Platform

GM•Warren, MI

23h•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 Staff Software Engineer (Level 8) , you will lead technical domains , drive architecture across teams, and serve as an engineering leader for 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.
10+ years of professional software engineering experience, with at least 3+ years in roles leading design and delivery of complex backend or platform systems.
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 direction , 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

Lead architecture and technical direction for core billing domains (subscriptions, invoicing, payments, taxation, adjustments,) and Zuora integration, setting patterns and reference implementations used by multiple teams.
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.
Lead migration of services to Azure using cloud‑native best practices, including containerization, infrastructure‑as‑code, and secure-by-default configurations.
Build and review microservices and event‑driven systems leveraging Kafka and modern service design, ensuring consistency, reuse, and high reliability across the platform.
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.
Champion engineering best practices (code quality, automated testing, CI/CD, security reviews) and lead design/architecture reviews for high‑impact initiatives.
Influence long‑term platform strategy , identifying simplification, modernization, and de‑risking opportunities across billing, integrations, and data flows.