API Support Engineer

About PrePass 

PrePass® is North America's most trusted weigh station bypass and toll management platform. We’re transforming how the transportation industry operates—creating solutions that keep trucks moving safely, efficiently, and compliantly. This means making bold decisions and building systems that support not only fleets but the broader economy. It all starts with enabling commercial vehicles to keep rolling with seamless toll management, weigh station bypass, and safety solutions. It’s what we do best, and we do it to meet the demands of the road every day. 

 
That’s why people join us: our solutions are implemented in real-time, on highways and interstates across the nation, helping fleets go farther, faster. This work challenges and rewards, presenting complex problems that need ambitious answers. We hire bold thinkers with a heart for impact, a passion for progress, and the optimism to shape the future of transportation. 

Position Summary 

As an API Support Engineer, you’ll be the first-line owner for API incidents and customer requests. You’ll work closely with Web/API Engineering and Enterprise/Platform teams to ensure platform resilience, observability, and a seamless developer experience. This role is critical to supporting the scalability and reliability of PrePass APIs as adoption grows. This is a hybrid position based out of our Phoenix, AZ office, with 1 day onsite per week. 

Essential Responsibilities 

 Technical Ownership 

• Own end-to-end API triage and resolution: analyze requests/responses, auth, throttling, data mismatches, and config. 

• Debug with code-level visibility: read and step through C# services, produce minimal repros, and propose fixes or small PRs. 

• Operate across the stack: Azure API Management (APIM), Azure Functions, Service Bus/queues, SQL layer, identity/OAuth, and networking. 

Reliability & Observability 

• Design and run load/security tests to identify performance and resilience improvements. 

• Enhance Datadog dashboards, logs, and alerts to reduce MTTD/MTTR. 

Developer Experience 

• Publish Postman collections and sample clients (C#, Python, Java). 

• Create and maintain knowledge base articles and runbooks for common scenarios. 

 Cross-functional Collaboration 

• Partner with Web/API engineering and Enterprise/Platform teams to resolve backend service issues. 

• Align with Product on upcoming API enhancements and customer needs. 

Must-Haves 

• Ability to read and debug C# services; strong general programming fundamentals. 

• Working knowledge of REST, OAuth 2.0/identity, and API best practices (rate limits, pagination, error patterns). 

• Familiarity with cloud concepts (Azure/AWS/GCP) and deploying/operating APIs in the cloud. 

• Experience with relational databases and SQL for diagnostics and data validation. 

• Proven troubleshooting mindset and customer empathy; comfortable owning issues through resolution. 

Nice-to-Haves 

• Experience with Azure APIM, Azure Functions, Service Bus, and Datadog (or comparable tools). 

• Prior work in load/security testing and performance diagnostics. 

• Ability to produce sample code in C#, Python, or Java for customer scenarios. 

How We Will Take Care of You

• Robust benefit package that includes medical, dental, and vision that start on date of hire.
• Paid Time Off, to include vacation, sick, holidays, and floating holidays.
• 401(k) plan with employer match.
• Company-funded “lifestyle account” upon date of hire for you to apply toward your physical and mental well-being (i.e., ski passes, retreats, gym memberships).
• Tuition Reimbursement Program.
• Voluntary benefits, to include but not limited to Legal and Pet Discounts.
• Employee Assistance Program (available at no cost to you).
• Company-sponsored and funded “Culture Team” that focuses on the Physical, Mental, and Professional well-being of employees.
• Community Give-Back initiatives.
• Culture that focuses on employee development initiatives.