Senior Backend Developer

About Anyon Systems

Anyon Systems is a quantum computing hardware company located in the Greater Montreal Region with a presence in Waterloo, Ontario. We work at the cutting edge of technology to develop and commercialize superconducting quantum computers. The company is rapidly growing and has both hardware and software groups to achieve its R&D goals.

We are a team of scientists, engineers, and developers who build full-scale quantum computing hardware and software. Our work spans experimental physics, high-performance computing, and advanced software systems.

Role Overview

We are seeking a Senior Backend Developer to lead the development of the backend systems powering our quantum computing platform. In this role, you will design and evolve the services that enable users to submit workloads to our quantum processors and manage access to our infrastructure. Your work will directly impact the reliability, scalability, and usability of our platform—ensuring robust system orchestration, secure access control, and seamless interaction between users and quantum hardware.

You will collaborate closely with quantum physicists, hardware engineers, and software developers to integrate backend services with complex underlying systems, translating domain-specific requirements into reliable, high-performance production software.

Key Responsibilities

• Lead the design and implementation of backend services and APIs for our job submission and user management platform.
• Design system architectures and service interfaces that are scalable, maintainable, and secure.
• Remain hands-on in building and evolving production systems, contributing to critical parts of the codebase.
• Own the reliability, performance, and evolution of backend systems in production.
• Define and drive best practices for monitoring, observability, and deployment.
• Collaborate with cross-functional teams to integrate backend services with quantum computing workflows and underlying infrastructure.
• Design and evolve systems for authentication, authorization, and user access management.

Qualifications

• 5+ years of backend development experience or equivalent demonstrating senior-level impact.
• Strong experience designing and building scalable, reliable backend systems in languages such as Go or other backend languages (e.g., Java), including system architecture and API design.
• Proven ability to build and operate concurrent, high-performance systems in production environments.
• Hands-on familiarity with monitoring, observability, and deployment practices for production systems.
• Background in authentication and authorization systems.
• Solid understanding of backend security best practices.
• Strong problem-solving skills and ability to take ownership in complex, evolving systems.

Nice to Have

• Experience with cloud platforms (e.g., Azure) and containerized environments.
• Familiarity with policy-based authorization systems (e.g., OPA).
• Familiarity with identity and access management systems (e.g., Keycloak).
• Experience with distributed systems concepts such as messaging, RPC (e.g., gRPC), or asynchronous processing.
• Experience with databases and data stores (e.g., MongoDB, Redis).
• Familiarity with frontend technologies (e.g., React, Next.js).

What We Offer

• A dynamic, collaborative, and intellectually stimulating environment.
• Opportunity to work on pioneering quantum technologies.
• Competitive salary and benefits.
• A chance to shape the software engineering culture of a growing company.

This position requires the ability to communicate effectively in English due to the nature of the work and collaboration with international teams. French-language skills are welcome and supported, in accordance with Quebec language laws.