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About the Role

As a Software Engineer on the Boulder Opal team, you will build the backend infrastructure that supports our quantum software platform. You'll work alongside compiler engineers and researchers to develop scalable backend systems, APIs and performance-critical services while growing your understanding of compiler technologies and quantum computing. This role is ideal for a strong backend engineer interested in systems programming who wants to develop expertise in compiler engineering over time.

Responsibilities

Design, build and maintain scalable backend services in Python and C++.
Develop APIs and backend services supporting our compiler and quantum runtime.
Build reliable distributed systems and cloud-native services.
Improve performance, reliability and observability across backend components.
Collaborate with compiler engineers to integrate new compiler capabilities into production systems.
Work with researchers and product teams to deliver new platform capabilities.
Learn and contribute to compiler infrastructure as your expertise grows.

Requirements

Bachelor's degree in Computer Science, Engineering or related discipline.
Strong programming skills in Python.
Experience with modern C++.
Experience building backend systems or distributed services.
Experience designing APIs using REST, gRPC or GraphQL.

Skills

Python
C++
REST
gRPC
GraphQL
FastAPI
Flask
Django
LLVM
MLIR
Rust
Go
Systems programming

Location

Boulder

Work Type

Full-time

Experience Level

Mid-level

Education Level

Bachelor's degree

Salary/Compensations

$130,000 - $170,000

Benefits

Annual discretionary bonuses
Equity
Other forms of compensation
Flexibility
Competitive benefits

About the Company

Q-CTRL is the global leader in AI-powered quantum control infrastructure software.
We build the tools that make quantum technology useful, solving the hardest challenges in quantum computing and quantum sensing to deliver real-world impact.
Founded in 2017, we operate globally with offices in Sydney, Los Angeles, San Francisco, Berlin, and Oxford.
Our teams bring together technical and multi-disciplinary expertise across the product lifecycle, and we’re hiring talent to help scale every part of the business.
We work quickly to turn cutting-edge science into deployable technology.
In 2024 we raised US$113 million in Series B funding, the largest aggregate investment for a quantum software company.
Six months later we delivered the first commercial quantum advantage with Ironstone Opal, our field-validated quantum navigation solution for defense and industry.
At Q-CTRL, we prioritize outcomes over hours.

Equal Opportunity

Qualified applications with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act.