• Job Description

  Req#: 166171

  About the Role

  We’re looking for a Principal Engineer in Platform Engineering — not just to write infrastructure, but to shape how it’s done. You’ll help lead the evolution of our internal control plane, built through innersource collaboration and grounded in GitOps practices. Think: operators over scripts, declarative over imperative, product thinking over platforms-as-support.

  You’ll work across complex environments where modern engineering meets legacy reality — applying cloud-native patterns, operator-driven automation, and policy-as-code to bring clarity and control to scale. You’ll influence architectural direction, mentor others through code and example, and contribute to a culture where infrastructure is not just stable — it’s elegant.

  This is your chance to leave a mark — not just on the tech, but on how engineers think about and interact with infrastructure.

  If you’re someone who’s built platforms, shaped teams, and believes engineering should feel joyful and powerful — this is that role.

  The day-to-day includes

  • Driving the transformation of high-impact systems from traditional infrastructure delivery toward a declarative, GitOps-powered control plane — built to scale, built to last
  • Creating secure, scalable platform foundations that offer engineers a golden path — safe by default, intuitive to use, and designed to accelerate delivery
  • Architecting platform solutions across legacy constraints and greenfield opportunity — with pragmatism and boldness where it counts
  • Embedding automation-first thinking and policy-as-code into how infrastructure is defined, governed, and evolved
  • Championing innersource as a way to scale contribution, build trust, and unlock collective ownership of platform capabilities
  • Collaborating deeply with teams to uplift engineering velocity, reliability, and experience — without compromising on control
  • Mentoring through action — leading by design, code, and conversation
  • Defining and shaping the standards that set the bar for modern platform engineering

  
  What makes you a great fit?

  • You’ve built scalable control planes and cloud-native platforms that last
  • You’re fluent in Kubernetes, containers, GitOps, GoLang, Python — and know when not to over-engineer
  • You’re fluent in AWS and have applied the Well-Architected Framework to build secure, reliable, and cost-effective systems
  • You’re well-versed in managing risk across the cloud landscape — designing for velocity without compromising control
  • You stay close to innovation — keeping pace with emerging technologies, including the latest in AI and platform automation
  • You’re a systems thinker — solving root causes, not symptoms
  • You lead through influence — clear in thinking, courageous in decisions
  • You collaborate deeply — connected to the team, the mission, and the customer
  • You deliver with intent — capable of cutting through complexity with practical solutions
  • You care about developer experience — safe by default, fast to use, built with empathy
  • You know great platforms are shaped as much by culture as they are by code

  Perks we love at Optus

  • 3 days in the office, 2 days remote – with flexible hours to suit!
  • Discounts to Optus products and services
  • Inclusive gender neutral paid Parental Leave of up to 16 weeks
  • Competitive leave including 2 additional 'Connected Leave' days
  • All Optus employees have access to resources, webinars and support via the ‘Parents at Work portal’
  • Own your own growth by accessing an extensive online and facilitator led learning catalogue.
  • Connect at work through our employee-led volunteer groups: Culture Connect, Elevate Women, Disability Network, Express Yourself (LGBTQIA+), United Veterans, Yarn Network, Wellbeing Network and Young Professionals.

  
  Keen to see what it’s really like to work at Optus? Search #OptusLife on LinkedIn to go behind the scenes!

  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 AccessibleRecruitment@optus.com.au 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.

  #LI-HM1

• About the company

  Singapore Telecommunications Limited is a Singaporean multinational telecommunications conglomerate and one of the four major telcos operating in the country.

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