HubMub
-
Optus

Senior Systems Engineer - Assurance

Optus
Australia · Full-time · Mid-Senior
Optus is an Australian telecommunications company, delivering more than 11 million services to our customers every day across mobile, broadband, and digital solutions.

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 Be Doing

  • Hands on Software development for custom build or customization of an existing product to documented requirements.
  • Capable of translating high level designs into low level component designs.
  • The systems Engineer will be knowledgeable across a wide range of technologies & concepts including software development in a range of languages: Java, JavaScript, Groovy, Python, Shell scripts, experience in docker and Kubernetes, rules engines, messaging bus, relational & graph & OLAP databases, and a range of operating systems (Linux, Windows).
  • Software development & unit testing to build the defined component level designs, utilizing common industry design patterns, frameworks and accelerators to start projects from scratch, build upon those frameworks & patterns to deliver the intended design.
  • Implementing best practices in relation to unit testing, test driven development and any other methodologies to ensure high software development quality.
  • Provide L3 support to OSS Operations teams for major incidents and managing corrective fixes where the fix requires an in-house software development or configuration change.
  • Management of source code, configuration and build & deployment tools.
  • Management of supplier personnel, and deliverables, where the software development is outsourced to a vendor, owning the source code once that is handed to Optus.
  • Input into sourcing activities for supplier services in relation to software design and development.
  • Management of all nonproduction environments.
  • Leading a small team of developers (vendor or contractors) to complete a custom build project if required.
  • Assisting platform owners in product / platform roadmap.

What makes you perfect for the role?

  • Degree‑qualified in Software Engineering, Computer Science, or related field, with 15+ years’ IT experience and 8+ years’ hands‑on software development & database administration experience.
  • Senior-level expertise (5+ years) in application design, high‑throughput systems, enterprise‑grade architecture, and end‑to‑end software development using Java, Groovy, Golang, JavaScript frameworks, and Spring Boot.
  • Hands‑on implementation of Grafana, Drools, Groovy scripting, Neo4j, Camunda, Apache NiFi, as well as relational (PostgreSQL/Oracle), graph, and OLAP databases, including partitioning and active/active clusters.
  • Strong skills in hardware sizing, containerisation (Docker, Kubernetes), and understanding of public cloud architectures, with experience deploying large-scale, high‑volume systems (300GB/day XML ingestion, 40B data points/report
  • Solid understanding of Telco OSS Assurance domains, plus intermediate capability in Data Engineering, AI/ML, and experience with forecasting and monitoring tools such as Prophet, Prometheus, and DuckDB.
  • Proven ability to lead teams, mentor technical staff, manage work allocation, and oversee vendor deliverables, including familiarity with Statements of Work, contracting, and commercial negotiations.

Optus is a place where we let you do you. We offer a range of benefits including:

  • 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.
  • Vibrant and collaborative office campus that includes cafes, convenience store, chill out zones, GP, post office, gym and on-site childcare centre.
  • 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 to participate fairly and equitably in the recruitment process, please email [email protected] 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 .

Key Skills

Ranked by relevance

groovy javascript kubernetes docker java design patterns prometheus designer grafana python apache golang neo4j linux cloud xml
Login to Apply
🇦🇺

Country Guide

Australia

Skilled migration pathways & strong salaries

Posted
Feb 04, 2026
Type
Full-time
Level
Mid-Senior
Location
Sydney
Company
Optus

Industries

Telecommunications

Categories

Information Technology

Related Jobs

3 roles aligned with this opportunity

View all jobs
View Job Details
Vocus
Related

Full Stack Frontend Developer

2026-05-27

Full-time
Not Applicable
Australia
Telecommunications
Engineering
View Job Details
Київстар
Related

DevOps/MLOps Engineer (ML / LLM Infrastructure)

2026-05-17

Full-time
Not Applicable
Ukraine
Telecommunications
Engineering
View Job Details
Groupe SII
Related

Développeur PHP / JavaScript (F/H)

2026-05-21

Full-time
Not Applicable
France
IT Services
Engineering