About The Position

Onecom is the UK's leading business technology provider, shaping the way we work, connect, communicate and operate. You will join a multi-award-winning company, with over 800 talented people committed to delivering great customer experiences driven by the Onecom Way; Think Kaizen, Be Respectful, Build Relationships, Make it Happen, Work Smart, Be Amazing. We’re looking for an experienced, customer-focused Senior Project Engineer to join our Professional Services team. You’ll take the technical lead on a range of customer projects across Unified Communications, Collaboration and Modern Workplace, designing, deploying and transitioning solutions into support. Working closely with Project Managers, Consultants, customers and third-party partners, you’ll make sure projects are delivered to a high standard, on time and within scope. This is a great opportunity for an experienced engineer who enjoys combining hands-on technical delivery with customer interaction, particularly someone with strong experience of VoIP platforms and Linux-based operating systems.

Requirements

  • Strong knowledge and hands-on experience across: SIP and VoIP
  • PSTN connectivity
  • DNS
  • TCP/IP networking
  • Quality of Service (QoS)
  • Delivering customer-facing technical projects
  • Troubleshooting complex technical issues
  • Producing clear technical design and implementation documentation
  • Customer-focused and confident working with stakeholders.
  • Organised and comfortable managing multiple priorities.
  • Proactive, analytical and solutions-focused.
  • Able to work independently while collaborating effectively with others.
  • Detail-oriented, particularly when it comes to technical delivery and documentation.
  • Happy to share your knowledge and support the development of colleagues.
  • Strong written and verbal communication skills and be comfortable explaining technical topics to a range of audiences.

Nice To Haves

  • Strong experience of VoIP platforms and Linux-based operating systems.

Responsibilities

  • Manage multiple technical project workstreams and deliver against agreed timescales.
  • Take part in discovery workshops and requirements-gathering sessions.
  • Produce implementation plans, migration strategies and technical documentation.
  • Deliver solutions in line with agreed scope, quality standards and best practice.
  • Support the smooth handover of completed projects into Managed Services and operational support teams.
  • Configure and support 3CX and Zoom solutions.
  • Configure and troubleshoot Session Border Controllers (SBCs) and SIP.
  • Support migrations from legacy PBX and telephony platforms.
  • Troubleshoot complex technical issues throughout project delivery.
  • Act as a trusted technical advisor throughout the project lifecycle.
  • Lead customer workshops, technical reviews and solution demonstrations.
  • Communicate project progress, risks and technical challenges clearly and confidently.
  • Build strong relationships with technical and non-technical customer stakeholders.
  • Provide guidance and mentoring to Project Engineers and junior colleagues.
  • Contribute to technical standards, templates and delivery methodologies.
  • Participate in technical design reviews and support pre-sales activity where required.
  • Identify opportunities for automation and continuous service improvement.
  • Keep up to date with emerging technologies and industry best practice.

Benefits

  • 25 days + bank holidays and buy/sell options
  • Birthday day off
  • 12 paid hours for flexible use
  • Volunteer day
  • 9% combined pension contribution
  • 4x salary life assurance
  • Quarterly and annual employee awards
  • Discounts on tech
  • All-expenses-paid company events
  • In-House Training Academy
  • 24/7 access to mental health support
  • Calm App
  • Discounted gym membership
  • Free breakfast & fresh fruit
  • Eye-care vouchers
  • Financial wellbeing support
© 2026 Teal Labs, Inc
Privacy PolicyTerms of Service