Senior Engineer, Backend: Cloud & API Development (Remote)

Senior Engineer, Backend: Cloud & API Development 

Location: Remote 

Division: Technology 

Department: Engineering 

About Us Quantum Computing Inc. (QCi) (Nasdaq: QUBT) is an innovative, integrated photonics company that provides accessible and affordable quantum machines to the world today. We are the pioneers of Entropy Quantum Computing (EQC), utilizing open quantum systems to solve NP-hard optimization problems. The Company’s portfolio offers unique capabilities in high-performance computing, artificial intelligence, cybersecurity, and remote sensing. 

Position Description We are seeking a Senior Cloud API Developer to maintain and develop our cloud APIs which allow users to interact with our photonic quantum hardware. In this role, you will maintain and expand a microservices ecosystem that orchestrates complex optimization jobs, manages user access, and connects high-level cloud APIs and low-level hardware controllers. 

You will be working in a hybrid environment, developing services that will run on cloud as well as on resource-constrained on-premise hardware stacks. This is a role that requires expertise in distributed systems, asynchronous event messaging, and strict API security standards. 

Responsibilities 

● Design, build, and maintain high-performance RESTful APIs using Golang and Python to support a broad ecosystem. 

● Architect asynchronous, event-driven workflows using RabbitMQ (or similar message brokers) to decouple job scheduling, hardware execution, and result processing. ● Optimize service-to-service communication to ensure low latency and high reliability across a distributed stack. 

● Monitor system health and implement distributed tracing to debug complex microservice interactions. 

● Implement industry-standard security best practices for API authentication and authorization (OAuth2, OIDC, mTLS). 

● Work within existing deployment and testing patterns to add new services to CI/CD. Required Qualifications 

● 5+ years of professional backend software engineering experience. 

● Expert proficiency in Golang and Python for production services. 

● Strong background in message queuing systems (RabbitMQ, Kafka, or NATS) and event-driven architecture patterns.

● Proven track record of implementing API security best practices, including OAuth2, JWT, and protection against OWASP Top 10 vulnerabilities (Injection, Broken Auth). ● Experience designing scalable database schemas (SQL, NoSQL) and managing databases with indexing and TTL. 

Preferred Qualifications 

● Experience with gRPC and Protocol Buffers 

● Experience with CI/CD pipelines (GitLab CI, GitHub Actions) and automated testing strategies.