Senior Software Engineer, Platform (Full Stack)

OEC is a company that provides software solutions to the automotive parts and repair industry. They are seeking a Senior Software Engineer to help shape and scale the core platform capabilities that power their products and customer experience, focusing on authentication, authorization, account management, and internal tooling.

Responsibilities:

• Design, build, and evolve authentication and authorization capabilities across the platform
• Help shape customer account, subscription management, and core platform services
• Create secure, scalable, and reusable platform patterns used across engineering teams
• Improve developer experience through streamlined integrations, reference implementations, and self-service tooling
• Lead complex technical initiatives from architecture and design through production delivery
• Write clean, maintainable, high-quality code and perform thoughtful code reviews
• Mentor engineers and contribute to a strong engineering culture focused on collaboration and continuous improvement
• Leverage modern AI-assisted and agentic development workflows to accelerate development, testing, and delivery cycles
• Identify and reduce technical and operational risk across distributed systems and platform services

Requirements:

• 6+ years of experience building and operating production-grade software systems
• Strong backend engineering experience with .NET / C#
• Experience designing, building, and securing APIs in distributed systems environments
• Hands-on experience with authentication and authorization systems
• Ability to work independently and drive solutions in ambiguous or evolving problem spaces
• Strong understanding of Git, CI/CD pipelines, and modern software development practices
• Experience working in Agile engineering environments
• Strong ownership mindset with the ability to drive work end-to-end
• Excellent communication and collaboration skills, especially in technical discussions and code reviews
• Experience with ASP.NET Core or modern .NET frameworks
• Familiarity with Auth0, Permit.io, or similar identity platforms
• Experience with observability, testing, resiliency, and reliability engineering patterns
• Experience using AI-assisted engineering workflows and modern developer tooling
• Strong SQL skills and experience optimizing relational databases
• Cloud-native development experience, preferably in AWS
• Experience building platform services, internal developer tooling, or shared infrastructure
• Front-end experience with React and micro-frontend architectures