Checkbox is a Series A, Sequoia-backed technology start-up with a mission to enable meaningful work for all. We are building an AI-first platform that is transforming how in-house legal teams operate, from how work enters legal through to how it is managed, delivered, and resolved.
Our customers include leading enterprise organisations such as SAP, Coca-Cola, Allianz, BMW, Elastic, and Stryker.
In 2024, we expanded our platform with the launch of our AI-powered Intake and Matter Management product, often described as the “JIRA for lawyers”. This forms part of our broader vision to become the Legal Service Hub inside organisations, serving as the system of record for legal demand, delivery, and outcomes.
We are a high-performing, tight-knit team across Australia, the United States, and Asia. Our culture is built on trust, ownership, curiosity, and a strong bias for impact.
The Role
We are looking for a Staff Software Engineer (Golang) to help design, build, and scale high-performance backend systems that power our platform.
You will join a cross-functional product engineering team working closely with Product Managers, Designers, and Engineers to deliver scalable, secure, and enterprise-grade solutions.
This role is ideal for someone who enjoys building well-architected systems, solving complex problems, and contributing to the technical direction of a growing SaaS product.
What You’ll Do
Design and build scalable backend services primarily using Golang
Contribute to architecture decisions that support performance, reliability, and security
Develop APIs and services that power core platform functionality and AI-enabled features
Work closely with frontend engineers to deliver end-to-end features
Improve system observability, monitoring, and reliability
Participate in code reviews, technical design discussions, and pair programming
Mentor mid-level engineers and contribute to engineering standards
Help balance shipping velocity with long-term maintainability
Technology Stack
Golang
PostgreSQL
AWS
Kubernetes and Docker
CI/CD pipelines
Event-driven services
About You
5+ years of experience building production-grade backend systems
Strong experience with Golang in commercial environments
Solid understanding of distributed systems and API design
Experience working with relational databases such as PostgreSQL
Familiarity with cloud infrastructure, ideally AWS
Experience in high-growth B2B SaaS environments preferred
Strong communication skills and ability to collaborate cross-functionally
Comfortable working in ambiguity and contributing to evolving architecture
What We Offer
Competitive salary and meaningful equity
Hybrid working model with Sydney CBD office collaboration days
Personal learning and development budget
Flexible leave policy
Expense policy and reasonable salary sacrifice options
Company-wide events and global off-sites
Open, transparent culture where ideas and feedback are valued
