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Onecom Tech Stack

UK business telecoms and cloud communications provider for 80,000+ SMEs

Telecommunications Fareham, Hampshire 501–1,000 employees Founded 2002 Public Company

Onecom manages over a million telecom and cloud services across the UK mid-market, operating a hybrid stack of legacy telecom infrastructure (Asterisk, Kamailio) alongside modern cloud platforms (Google Cloud, AWS, Kubernetes). Support-heavy hiring (37% of active roles) and a project roster focused on CSAT/NPS and disconnection process efficiency signal a company scaling operational maturity rather than product innovation — typical of established telecom operators expanding managed service reach.

Tech Stack 74 technologies

Core StackAngular JavaScript C# BigQuery SQL Server PostgreSQL Redis Elasticsearch Kubernetes Java AWS PHP TypeScript Vue Jira Confluence Bitbucket HTML/CSS XML .NET Framework Cloud Run Google Cloud Functions Perl Debian Asterisk Kamailio CSS PHPUnit Teams Git+44 more

What Onecom Is Building

Challenges

  • Customer complaints
  • Low conversion rates
  • Modernizing legacy systems
  • Reducing average handling time
  • Supporting business change projects
  • Streamlining internal processes
  • Continuous improvement of disconnection processes
  • Identifying trends in disconnections
  • Efficient disconnection processing
  • Improving csat/nps

Active Projects

  • Multi‑channel digital campaigns
  • Onecloud application development
  • Pc installs and network hardware setups
  • Wave platform
  • Digital marketing strategy
  • Office moves
  • Improve csat/nps and first call resolution
  • Implement contact strategy
  • Establish organisational structures
  • Process automation and efficiency improvements

Hiring Activity

Accelerating50 roles · 25 in 30d

Department

Support
19
Engineering
9
Ops
7
Sales
6
Finance
4
Marketing
3
Data
2
HR
1

Seniority

Mid
26
Junior
10
Senior
6
Lead
5
Manager
4

Notable leadership hires: Technical Support Lead

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About Onecom

Onecom is the UK's largest independent business telecoms provider, serving 80,000+ customers across fixed-line voice, mobile, connectivity, and managed cloud services. The company operates unified communications solutions for mid-market businesses, managing over a million active services. Founded in 2002 and publicly listed, Onecom maintains headquarters in Fareham, Hampshire, with a 501–1,000-person team spanning support, engineering, operations, and sales functions. Recent strategic recognition includes Vodafone partner-of-the-year status and Five9 innovation partnership awards.

HeadquartersFareham, Hampshire
Company Size501–1,000 employees
Founded2002
Hiring MarketsIndia, United Kingdom

Frequently Asked Questions

What tech stack does Onecom use?

Onecom runs Angular, .NET, C#, and Java for application logic; PostgreSQL and SQL Server for databases; Elasticsearch and BigQuery for analytics; Kubernetes and Google Cloud Run for orchestration; and Asterisk/Kamailio for VoIP telephony infrastructure.

Where is Onecom headquartered and hiring?

Headquartered in Fareham, Hampshire, UK. Active hiring in both the United Kingdom and India, with accelerating velocity across the last 30 days.

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