Senior Software Engineer – AI-Driven Backend for Grading Ops

Collectors Universe, Inc.; California (MO); On-site; USD 140,000 - 190,000; Full time

Job summary

Collectors Universe, Inc. is seeking a Senior Software Engineer for Grading Operations. The role focuses on building and evolving back-end services, APIs, and data models that power our grading and authentication processes, with some frontend involvement.

The candidate should have strong C#/.NET experience, design RESTful APIs, and work across containerized and serverless environments in a high-volume setting. Expect collaboration with product and operations teams.

Qualifications

• 5+ years of software engineering experience building production applications.
• 3+ years experience in C# and .NET.
• Experience designing RESTful APIs and service integrations.
• Experience automated tests for services in production.

Responsibilities

• Build backend services, APIs, and data models powering internal applications.
• Develop event-driven and asynchronous systems for high-volume workflows.
• Contribute to frontend development using JavaScript/TypeScript and Vue.js.
• Collaborate with Product, Tech, and Operations to translate requirements.
• Troubleshoot data, integration, service, and UI issues across a large codebase.
• Participate in on-call rotations supporting team services.
• Enhance documentation to improve maintainability and velocity.
• Improve system design, observability, and engineering practices.

Skills

Backend development

C# / .NET

RESTful APIs

CI/CD

AWS

Docker

Kubernetes

Vue.js

JavaScript / TypeScript

SQL & data modeling

Git / CI tools

Tools

Docker

Kubernetes

AWS

Terraform

CloudFormation

PostgreSQL

SQL Server

Vue.js

Job description

Collectors Universe, Inc. is seeking a Senior Software Engineer for Grading Operations. The role focuses on building and evolving back-end services, APIs, and data models that power our grading and authentication processes, with some frontend involvement.

The candidate should have strong C#/.NET experience, design RESTful APIs, and work across containerized and serverless environments in a high-volume setting. Expect collaboration with product and operations teams.