Senior Systems Engineer

Optus; Sydney; Hybrid; AUD 150,000 - 210,000; Full time

Benefits offered by this job

Employee discounts

Flexible work arrangement

Parental leave

Professional development (Optus U)

Job summary

Optus is seeking a Senior Systems Engineer to lead software development, configuration and enhancement of OSS Assurance Systems. You will translate requirements into designs, guide vendor teams, and mentor engineers while owning the codebase and deployment pipelines.

The role requires strong Java/Groovy skills, extensive DB experience, and hands-on experience with containers and integration platforms. Flexible hybrid work in Sydney is offered along with a focus on reliability and continuous

Qualifications

• 10–15 years IT experience with hands-on software engineering.

Responsibilities

• Translate high-level designs into detailed component designs for software implementations.
• Oversee code reviews and vendor deliverables to uphold Optus standards.
• Mentor and lead small in-house and offshore development teams.

Skills

Java

Groovy

Enterprise design

System integration

Team leadership

Vendor management

SQL

NoSQL

Kafka

NiFi

Camunda

Drools

Docker

Kubernetes

OpenNMS

Nokia UIV modelling

Nokia Assurance Centre

Education

Tools

TeMIP adapter coding

IBM Netcool

OpenNMS SNMP

Nokia Assurance Centre

Nokia UIV modelling

Java

Groovy

Apache NiFi

Kafka

Camunda

Drools

Docker

Kubernetes

Job description

Every day, millions of Australians connect, work, stream, and stay in touch on the Optus network. When it works seamlessly, it's easy to take for granted. But behind it is a team making thousands of decisions every day - decisions that keep people, businesses and communities connected.

Right now, Optus is passionate about getting the fundamentals right - simplifying how we work, lifting standards, and building a more reliable, resilient experience for our customers. It's not about surface-level change. It's about how we make decisions, how we work together, and how we deliver.

The Senior Systems Engineer (SSE) is accountable for software development, configuration, and enhancement of OSS Assurance Systems including both off the shell product and inhouse built applications. The Systems Engineer is a hands‑on software developer role but need to understand the business requirements prior to implementing the required solution, selecting the technology stack in alignment with the Solution Designer / Architects and to agreed roadmap and strategy.

What You’ll Do

• Management of demands from different parts of Optus network for assurance integration to ensure project timelines are meet.
• Translating high‑level solution or architecture designs into detailed component‑level designs for software implementations.
• Managing and guiding vendor teams to ensure deliverables meet Optus standards, including code reviews, requirements clarifications, and owning the final codebase.
• Leading and mentor small teams of inhouse developers and vendor resources in software development and introduction of new development toolsets to improve efficiency.
• Own alarms plans and configurations that manage the alarming, auto ticketing, auto restoration of network functions and conduct review with operation and engineering.
• Providing L3 support for OSS Operations teams, including diagnosing and implementing fixes that require code or configuration changes.
• Managing source code, build pipelines, and deployment tools .

What You’ll Bring

• 10–15 years’ IT experience, including strong hands‑on software engineering capability.
• Experience in TeMIP adapter coding, IBM Netcool configuration, OpenNMS SNMP manager, Nokia Assurance Centre Fault Management + Performance Management, and Nokia UIV modelling will be highly regarded.
• High‑level proficiency in Java and Groovy, with experience designing and delivering enterprise‑scale systems.
• Strong database skills across relational, NoSQL and graph databases, including schema design, SQL, and performance tuning.
• Strong development skill in Apache NiFi and Kafka including flow design and system integration patterns.
• Strong development skill in Camunda and Drools, including BPMN modelling and workflow automation.
• Broad technical exposure across infrastructure, OS (Linux/Windows), containers (Docker/Kubernetes), and integration technologies.
• Proven experience managing vendors or offshore development teams — guiding technical direction, reviewing deliverables, and ensuring quality outcomes.

The good stuff …

• Competitive remuneration and employee discounts. Make life easier (and more affordable) with $80 monthly credit and 25% off Optus products and unique shopping discounts with our retail partners.
• Flexible working arrangements with opportunities to work three days in the office, two days remote or home.
• Competitive leave policies, including additional 'Connected’ days to focus on culture, family, health, community, or whatever’s important to you.
• We support growing families with inclusive, carer-neutral paid Parental Leave of up to 16 weeks.
• Direct your own development and build future-ready skills with Optus U’s industry-focused micro-credentials, developed with La Trobe and Macquarie Universities.
• Build meaningful connections through employee-led networks and diversity initiatives including Culture Connect, Elevate Women, Disability Network and Express Yourself (LGBTQIA+).
• Put your wellbeing first with free access to counselling and support services, 24/7 — in-person, by phone, SMS, or video.

At Optus, we are strengthened by others and that means valuing diversity and saying ‘yes’ to embracing individual differences. We are committed to ensuring that our application process provides an equal employment opportunity to all job seekers, including individuals from diverse gender, cultural and linguistic backgrounds, individuals with a disability, individuals identifying as being part of the LGBTQIA+ community, individuals who may have served in the armed forces or who identify as Aboriginal and/or Torres Strait Islander.

We also want to do our best to make our recruitment process inclusive. If you require any adjustments or accessibility support, please email [e-mail] or call 1800 309 170. We’re here to help. When you contact us, please advise your preferred method of contact and we will be in touch within 48 hours. For more information on Diversity, Inclusion & Belonging at Optus, please visit https://www.optus.com.au/about/inclusion-diversity.