We are oOhmedia (pronounced “oh” media).

oOhmedia is the #1 Out of Home company in Australia and New Zealand. We exist to make public spaces better and brands unmissable, proudly leading the market with innovation, creativity, data and results. Our network plays an important role in the communities they are located, creating engaging environments that inform, entertain and inspire, while connecting brands with audiences at scale.

We have a unique culture, purpose and set of values that shape how we show up every day. We Win as One. We are Hungry. Always. And we Own It. We are oOhmedia, and we are unmissable.

About the opportunity:

- Employment Type: Full-time, Permanent
- Flexibility: A vibrant, collaborative culture with 4 days in the office and flexibility built in
- Location: Based in Sydney

We are looking for a Senior Software Engineer to join the team responsible for a core commercial domain managing inventory availability and campaign scheduling across our national network. These high-throughput systems support how our sales teams plan, quote, and schedule campaigns, while integrating seamlessly with external partners.

This is a hands-on engineering role for someone who enjoys solving complex backend challenges, designing and running event-driven, serverless systems primarily in Golang and Node.js on AWS, and raising the technical bar through active code review and mentoring. You will work closely with the Engineering Manager, Staff Engineer, delivery, and architecture partners to deliver high-quality, resilient solutions.

What you’ll be doing:

- End-to-End Delivery: Design and deliver complex backend features and services end to end, from technical design through to production deployment.
- Architecture & Roadmap: Contribute to the domain's architecture and technical roadmap in close partnership with the Staff Engineer and wider architecture teams.
- High-Throughput Systems & Data Integrity: Build for correctness, data integrity, and high performance in high-throughput concurrent systems,



including idempotent processing and safe handling of competing updates.
- Service Ownership & Observability: Own the production health of your services by instrumenting them with OpenTelemetry, leveraging distributed tracing, alerts, and SLOs to understand system behavior, and proactively troubleshooting critical issues.
- Platform Modernisation: Drive platform evolution by safely transitioning consumers off legacy services and retiring them.
- CI/CD & Testing Standards: Enhance CI/CD pipelines and multi-level automated testing (contract and integration testing) to ensure changes reach production safely with rollback capabilities.
- Mentorship & Quality: Conduct thorough code and design reviews, mentor and coach fellow engineers, and help establish engineering best practices.
- Pragmatic Problem-Solving & AI Tooling: Securely leverage AI-assisted engineering tools to boost productivity, while balancing business value, technical constraints, and long-term maintainability.

What you’ll bring:

- Backend Depth: 6+ years of professional software engineering experience with strong production backend depth, ideally in Golang or Node.js.
- AWS & Serverless: Hands-on experience designing, building, and operating event-driven, serverless systems on AWS (Lambda, SQS, SNS, EventBridge) and infrastructure as code (AWS CDK).
- Distributed Systems & Concurrency: Proven experience ensuring data correctness in high-throughput or concurrent systems (idempotency, ordering, retries, and data reconciliation).
- Up-to-date Observability: Practical experience with distributed tracing, SLIs, and SLOs, ideally using OpenTelemetry and Datadog.
- Database & Testing Expertise: Experience working with databases (DynamoDB, Aurora DSQL, or PostgreSQL) alongside robust CI/CD, contract, and integration testing frameworks.
- Technical Leadership & Collaboration: A track record of mentoring engineers, lifting code quality, and clearly communicating technical trade-offs with both technical and non-technical stakeholders.
- Domain Knowledge (Desirable): Experience within A

📌 Senior Software Engineer (North Sydney)
🏢 Ooh!Media
📍 North Sydney