About 1Solution
1Solution is a leading South Australian ICT managed services provider and Telstra Gold Partner, delivering unified communications, networking, cyber security and managed services to government and enterprise clients across Australia.
With 50+ staff and a strong growth trajectory, we're known for technical excellence and long-term client relationships.
The Role
We're looking for an experienced UC Engineer to design, deploy and support unified communications and telephony solutions for our clients.
You'll work across a mix of cloud and on-premises voice platforms, partner closely with our pre-sales and project teams, and play a key role in delivering high-quality voice outcomes for government and enterprise customers.
Key Responsibilities
Design, configure and deploy UC and voice solutions including Microsoft Teams Calling, Cisco Webex Calling, and SIP-based platforms
Implement and manage SIP trunking, session border controllers, dial plans, call routing and number porting
Integrate voice platforms with Telstra carriage services and third-party contact centre solutions
Lead voice migrations from legacy PBX systems to cloud-based platforms
Provide L2/L3 support, troubleshoot complex voice and call quality issues
Develop and maintain high-quality technical documentation including low-level designs and as-builts
Collaborate with pre-sales teams to design solutions and contribute to client-facing presentations and technical discussions
What You Will Bring
4+ years' experience in voice/UC engineering within an MSP,



telco or enterprise environment
Strong hands-on experience with Microsoft Teams Calling (Direct Routing and/or Operator Connect) and/or Cisco UC platforms
Solid understanding of SIP, RTP, QoS, codecs, and voice troubleshooting tools
Experience with SBCs (AudioCodes, Ribbon or similar)
Working knowledge of networking fundamentals as they relate to voice (VLANs, QoS, firewall traversal)
Excellent communication skills and a customer-first mindset
Familiarity with cybersecurity frameworks (ASD Essential Eight preferred)
Australian Citizenship (preferred — required for some government engagements)
Nice to Have
Microsoft 365 Certified: Teams Voice Engineer Expert
Cisco CCNP Collaboration
Experience with Genesys, Five9 or similar contact centre platforms
Telstra carriage and TIPT experience
Why Join Us
Be part of a dynamic team that values innovation, collaboration, and growth.
Enjoy a supportive work culture where your ideas and expertise truly make a difference.
Benefit from opportunities for professional development and career progression in a fast-paced industry.
Work on exciting projects with a diverse range of clients across various industries.
Our Values




Deliver Success: We're passionate about you – our customers, our people, our families, our business.
It makes us happy when we provide you with a great experience, and we never want to let you down.
Communicate with Purpose: We want to communicate with you, so you know what's going on – and we love to listen too!
Trust is a Must: You can rely on us as your "protected pair of hands".
A trusted employer, a trusted partner, a trusted supplier
Culture Counts: We want to create a great place to come to work.
We want to have fun, be creative and bounce off each other.
We celebrate our differences; our complimentary skills and we value friendship.
Experience Matters: We value the reputation of our business and our team.
We value the knowledge of the solutions we sell, because we've done it many times before.
One Solution actively encourages applications from individuals of all genders and backgrounds, recognising that a diverse team contributes to innovation and success.
We work hard to ensure equality extends to creating an environment where everyone feels valued and empowered to reach their full potential.
At One Solution, we don't just solve problems, we build relationships.
If you want to find more about us visit our website at /.
If you're passionate about technology and driven to deliver exceptional service, we'd love to hear from you.
Please submit your application through SEEK with a pdf copy of your CV and cover letter.

📌 Unified Communications Engineer (South Australia)
🏢 One Solution Mobile & Data
📍 South Australia