Senior Systems Engineer

Singtel Group; Sydney; Hybrid; AUD 180,000 - 240,000; Full time

Benefits offered by this job

Competitive remuneration

Employee discounts

Developer benefits

Flexible working

Job summary

Optus seeks a Senior Systems Engineer to develop, configure, and enhance OSS Assurance Systems, aligning with roadmaps and architecture. The role is hands-on with leadership of small teams and vendor resources to deliver reliable, scalable solutions.

You will own alarms configurations, provide L3 OSS support, and manage code, builds, and deployments across Linux/Windows, Docker/Kubernetes, and related integration tech. A strong focus on enterprise-scale systems is required.

Qualifications

• 10–15 years IT experience with hands-on software engineering.
• Experience with TeMIP adapter coding and IBM Netcool configuration.
• High-level proficiency in Java and Groovy for enterprise-scale systems.
• Strong database skills across relational, NoSQL and graph databases; SQL and performance tuning.
• Strong development skill in Apache NiFi and Kafka for flow design and integration.
• Strong development skill in Camunda and Drools for BPMN modelling.
• Broad exposure across Linux/Windows, containers (Docker/Kubernetes), and integration technologies.
• Proven experience managing vendors or offshore development teams.

Responsibilities

• Management of demands from Optus network for assurance integration and timelines.
• Translating high-level designs into detailed component designs for software implementations.
• Guiding vendor teams to ensure deliverables meet standards, including code reviews.
• Leading in-house developers and vendors to introduce new toolsets for efficiency.
• Own alarms plans and configurations for network function management and restoration.
• Provide L3 support for OSS Operations, diagnosing and implementing fixes.
• Manage source code, build pipelines, and deployment tools.

Skills

Java

Groovy

Enterprise systems

Databases

NoSQL

SQL tuning

Apache NiFi

Kafka

Camunda

Drools

Kubernetes

Docker

Vendor management

L3 support

Tools

IBM Netcool

OpenNMS

Nokia Assurance Centre

Nokia UIV

TeMIP adapter

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.

WhatYou’llDo

• 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.

WhatYou’llBring

• 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 …

• Competitiveremunerationand 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, includingadditional'Connected’ days to focus on culture, family, health, community, orwhatever’simportant 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 yourequireany adjustments or accessibility support, please [e-mail] or call 1800 309 170.We’rehere to help. When you contact us, pleaseadviseyour preferred method of contact and we will be in touch within 48 hours. For more information on Diversity, Inclusion & Belonging at Optus, please visithttps://www.optus.com.au/about/inclusion-diversity .