Senior API 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. 

About the Role 

We’re looking for a Senior API Engineer to lead the design and development of scalable, cloud-native services that power our industry-leading toll and bypass platform. In this role, you’ll architect and build distributed systems using .NET and Azure, mentor junior engineers, and collaborate across teams to deliver high-impact solutions. You’ll work closely with product managers, architects, and DevOps engineers. This is a hybrid position based out of our Phoenix, AZ office. 

Essential Responsibilities 

Cloud-Native Architecture & Development 

• Design, develop, and maintain .NET-based APIs and services using C# and .NET 8. 

• Build scalable, event-driven systems using Azure Functions, Service Bus, Event Grid, and other PaaS offerings. 

• Implement RESTful APIs and asynchronous communication patterns. 

DevOps & CI/CD 

• Design and maintain CI/CD pipelines using Azure DevOps and GitHub Actions. 

• Ensure secure, reliable deployments through automation and infrastructure best practices. 

• Manage secrets and configurations using Azure Key Vault. 

Software Engineering Excellence 

• Apply SOLID principles, domain-driven design (DDD), and clean architecture. 

• Conduct code reviews, architecture reviews, and technical deep-dives. 

• Champion best practices in software development and system design. 

Cross-Functional Collaboration & Mentorship 

• Partner with product managers, architects, and QA to deliver high-quality features. 

• Mentor junior developers and foster a culture of continuous improvement. 

• Participate in Agile ceremonies and contribute to team planning and retrospectives. 

Must-Have: 

• 6+ years of experience in software development with .NET (C#). 

• 3+ years designing and implementing Service-Oriented Architecture (SOA). 

• 5+ years working with SQL Server and Cosmos DB. 

• Strong experience with Azure PaaS (App Services, Functions, API Management, Event Grid, Service Bus). 

• Proficiency in microservices, messaging patterns, and distributed systems. 

• Experience with CI/CD pipelines (preferably GitHub Actions). 

• Deep understanding of RESTful APIs and asynchronous communication. 

• Strong grasp of software engineering principles and clean architecture. 

• Experience working in Agile environments with a DevOps mindset. 

Bonus Points For: 

• Experience with Infrastructure as Code (Bicep, ARM templates, Terraform). 

• Familiarity with containerization and Kubernetes (AKS). 

• Exposure to DDD, CQRS, and Event Sourcing. 

• Experience with NServiceBus and RabbitMQ. 

• Azure certifications (e.g., Azure Developer Associate, Solutions Architect). 

• Experience with observability tools (Azure Monitor, Application Insights, Log Analytics). 

Desired Characteristics 

• Strategic thinker with a proactive, problem-solving mindset. 

• Comfortable navigating ambiguity and fast-paced environments. 

• Strong interpersonal and mentoring skills. 

• High degree of ownership, accountability, and initiative. 

• Ability to communicate complex technical concepts clearly. 

• Collaborative and team-oriented with a passion for clean code. 

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.