Principal Software Engineer

TransCore•Norcross, GA

About The Position

TransCore (TRN), a subsidiary of ST Engineering, is seeking a hands-on Principal Software Engineer for its Smart Mobility Ecosystems team in Atlanta. The role will help shape the architecture and technical direction of the Smart Mobility Platform, a shared foundation for next-generation mobility products intended to improve how people move and support users around the globe. This is a “zero to one” opportunity to build a new product and ecosystem from scratch. The Principal Software Engineer will be the platform subject matter expert for Smart Mobility engineering leadership and collaborate with engineering teams to develop a high-quality, data-informed system that meets customer needs, supports user growth and critical journeys, and enables new mobility use cases and verticals. This is an individual-contributor position with no direct reports. The role leads through technical expertise, influence, and engineering practices, and requires hands-on coding and design work. There may be opportunities to grow into a more senior technical or people-leadership role over time.

Requirements

Bachelor’s degree in computer science or a related field.
At least 10 years of professional software engineering experience, including sustained experience as a technical lead across multiple teams or systems.
Typically, 14 or more years of combined relevant software engineering experience and advanced education, including sustained technical leadership across multiple teams or systems.
Expertise in cloud-native architecture using AWS, Azure, or GCP; microservices; and event-driven systems.
Experience with high-volume, real-time data processing.
Proficiency in RESTful or GraphQL API design and experience supporting applications across a broad range of use cases.
Strong working knowledge of modern engineering and DevOps practices, including CI/CD, infrastructure as code, and observability.
Proven track record of technically leading “zero to one” initiatives, especially in technology-heavy, regulated industries such as transportation or infrastructure.
Strong communication skills and ability to influence and coordinate across teams without formal authority.
Currently working as a hands-on individual contributor; the role involves writing and reviewing code and designs.

Nice To Haves

Master’s degree or higher in computer science.
Experience applying AI capabilities to improve workflows or deliver organizational efficiencies.
Knowledge of tolling, parking, or transportation technologies.
Experience in cross-functional environments focused on platform SDK development.

Responsibilities

Serve as the hands-on technical authority and subject matter expert for the Smart Mobility Platform and its expansion into a multimodal mobility ecosystem.
Assess current engineering capabilities and architecture, and advise on future technology direction and standards.
Design, prototype, and implement cloud-native, microservices-based architectures, including payment integrations, auto integrations, and API-first designs.
Apply user-first thinking to identify platform and user-interface capabilities and ensure the architecture supports them.
Ensure systems provide high performance, scalability, and support for high-volume, real-time data processing.
Maintain system security and compliance with relevant regulations, including PCI DSS and GDPR.
Collaborate with product, platform, and application engineering teams to align designs, resolve cross-cutting technical issues, and maintain consistency across teams.
Promote sound engineering practices, including design and code reviews, testing, observability, and secure delivery.
Mentor engineers across teams.
Write and review code and designs as a hands-on individual contributor.