Senior Software Engineer – GraphQL & Platform Engineering

Sydney or Melbourne | Permanent | Hybrid

Multiple positions are available as the client continues to grow the squad.

A leading Australian digital and consumer technology business is looking for three Senior Software Engineers to join a high-performing engineering team responsible for a critical platform supporting large-scale web and mobile experiences.

This is an opportunity to work on a high-throughput GraphQL platform operating at significant scale, with millions of requests each week and billions of operations each month.

The team is evolving its architecture from a centralised GraphQL platform towards a more modern federated model with team-owned subgraphs. As a Senior Engineer, you'll play a key role in improving reliability, performance, scalability and developer experience while helping shape the future of the platform.

The role

You'll work on a Backend-for-Frontend (BFF) and API aggregation layer that connects customer-facing web and mobile applications with multiple backend services.

This is a highly hands-on senior engineering role where you'll be expected to:

• Build, maintain and evolve production GraphQL services.
• Design and develop scalable backend solutions using Node.js and TypeScript.
• Own GraphQL concerns including schema design, resolvers, performance, caching and observability.
• Diagnose and resolve complex production issues across distributed systems.
• Improve platform reliability, resilience, scalability and developer experience.
• Contribute to the evolution towards Apollo Federation and team-owned subgraphs.
• Work closely with frontend, backend and product teams across the wider technology organisation.
• Deploy, operate and troubleshoot production services in AWS.
• Identify recurring technical issues and proactively drive broader, systemic improvements.
• Mentor engineers and contribute to technical direction as a senior individual contributor.

What we're looking for

We're looking for a strong Senior Backend, Platform or Software Engineer with genuine experience owning and operating GraphQL in production.

You will ideally bring:

• Strong backend engineering experience with Node.js and TypeScript.
• Deep, production-level GraphQL experience, building and operating APIs, rather than simply consuming GraphQL from the frontend.
• Experience with Apollo Server and/or Apollo Studio.
• Experience with GraphQL schema design, resolvers and downstream service orchestration.
• Strong understanding of GraphQL performance, including caching, N+1 issues, latency and throughput.
• Experience with observability, tracing, production troubleshooting and reliability.
• Experience building or maintaining BFF, API gateway or API aggregation layers.
• Strong AWS experience, including deploying and operating production services.
• Experience working with high-scale, high-traffic systems.
• Strong communication skills and the ability to work across multiple engineering and product teams.
• A proactive mindset and genuine sense of ownership.

Highly regarded

• Apollo Federation, federated GraphQL or subgraph ownership.
• Experience decomposing a GraphQL monolith into federated or team-owned schemas.
• Docker, ECS and Kubernetes exposure.
• Python experience supporting legacy services.
• .NET experience.
• Experience working in large-scale consumer, marketplace, e-commerce or digital product environments.
• Experience using AI-assisted engineering tools to improve productivity and code quality.

If you're a Senior Engineer with deep GraphQL platform experience and enjoy solving complex backend and distributed systems challenges, reach out, and we can kick off a conversation.

Email: derek.mccormack@latitudeit.com.au