Senior Software Engineer, Back end (Opal Platform)

Entangled Future; Sydney; Hybrid; AUD 140,000 - 190,000; Full time

Job summary

Q-CTRL is looking for a Senior Back-end Software Engineer to strengthen the Opal Platform in Sydney. You will design robust Python APIs and scalable microservices powering our quantum software products used by researchers and industry partners.

Collaborate with product, design and research teams to improve reliability, throughput and security while delivering value in an AI-native engineering environment. This is a full-time role with ownership and opportunity to impact how customers access

Qualifications

• Extensive backend development experience.
• Strong Python programming skills.
• Experience designing scalable APIs and services.

Responsibilities

• Own backend components of the Opal Platform, focusing on robust Python APIs and microservices.
• Collaborate with product, design and research teams to deliver features with high reliability and performance.
• Ensure security, observability and maintainability of backend services across production systems.

Skills

Backend development

Python

API design

Tools

REST APIs

Microservices

Job description

Senior Software Engineer, Back end (Opal Platform) at Q-CTRL, Sydney. A senior-level full time position in the Computing Engineering team, listed under software engineering.

About the team At Q-CTRL, Quantum Computing Engineering is a global team of software engineers and infrastructure experts, combining deep technical expertise with a startup mindset to deliver real impact through software innovation. Our work is underpinned by robust standards, and by embracing the three virtues. Our team excels in areas across back-end, front-end, machine learning, and platform engineering. We transform Q-CTRL’s world-leading technological breakthroughs into commercial software products with applications across defense, research, and industry. We work closely with Product, Design, and Research teams to accelerate the path to quantum advantage worldwide. About the role As a Senior Back-end Software Engineer in the Opal Platform team you will be responsible for managing how users and partners can access the Q-CTRL products and how our own services interact with our platform. You'll share ownership of the Python APIs and microservices that power Q-CTRL's quantum software products, used by customers worldwide. You'll work in an AI-native engineering team, where agentic tools handle the routine work so you can focus on design, quality and impact.