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Jobs at ONECOM LIMITED (Now Hiring) — 12 open

ONECOM LIMITED logoONECOM LIMITED

ITMS Third Line Technician

Swindon, England, United Kingdom · On-site

Senior

Join our Team as a ITMS Third Line Technician! Location: Swindon Salary: Competitive Hours: Monday - Friday - Shift based between 08:00 - 18:00 About the role: As an ITMS Third Line Technician, you’ll be the go‑to expert…

Skills: Cloud Technologies, Networking, Infrastructure Management, Root Cause Analysis, Technical Leadership

ONECOM LIMITED logoONECOM LIMITED

ITMS 3rd Line Technician

Swindon, England, United Kingdom · On-site

Senior

Join our Team as a ITMS 3rd Line Technician! Location: Swindon Salary: Competitive Hours: Monday - Friday - Shift based between 08:00 - 18:00 About the role: As an ITMS 3rd Line Technician, you’ll be the go‑to expert for…

Skills: Cloud Technologies, Networking, Infrastructure Management, Root Cause Analysis, Technical Leadership

ONECOM LIMITED logoONECOM LIMITED

ITMS 2nd Line Technician

Swindon, England, United Kingdom · Hybrid

Mid level

Join our Team as a ITMS 2nd Line Technician! Location: Swindon Salary: Competitive Hours: Monday- Friday- Shift based between 08:00 - 18:00 About the role: As an IT Managed Services Technician, you’ll be at the heart of …

Skills: Windows, MacOS, Server Management, Microsoft 365, Networking

ONECOM LIMITED logoONECOM LIMITED

ITMS Second Line Technician

Swindon, England, United Kingdom · Hybrid

Mid level

Join our Team as a ITMS Second Line Technician! Location: Swindon Salary: Competitive Hours: Monday- Friday- Shift based between 08:00 - 18:00 About the role: As an IT Managed Services Second Line Technician, you’ll be a…

Skills: Windows, MacOS, Server Management, Microsoft 365, Networking

ONECOM LIMITED logoONECOM LIMITED

AI and Automation Engineer

Gurgaon, Haryana, India · On-site

Mid level

Location: Gurgaon - India Salary: Competitive Hours: UK Shift About the role We’re building a new AI & Automation function — a small, high‑trust, high‑autonomy team operating inside an established business. We move fast,…

Skills: Python, JavaScript, Node.js, React, Next.js

ONECOM LIMITED logoONECOM LIMITED

Complaints Handler

Whiteley, England, United Kingdom · On-site

Mid level

Join our Team as a Complaints Handler! Location: Whiteley, Fareham (Office Based) Salary: £26,500 Per Annum + KPI Bonus Hours: Monday to Friday 8am - 5pm About the role: As a complaint handler, you’ll take ownership of c…

Skills: Customer Service, Complaint Handling, Case Management, Stakeholder Management, Problem Solving

ONECOM LIMITED logoONECOM LIMITED

Complaints Handler

Whiteley, England, United Kingdom · On-site

Mid level

Join our Team as a Complaints Handler! Location: Whiteley, Fareham (Office Based) Salary: £26,500 Per Annum + KPI Bonus Hours: Monday to Friday 8am - 5pm About the role: As a complaint handler, you’ll take ownership of c…

Skills: Customer Service, Complaint Handling, Case Management, Stakeholder Management, Problem Solving

ONECOM LIMITED logoONECOM LIMITED

1st Line Technical Support Specialist

Gurgaon, Haryana, India · On-site

Entry level

Join our Team as a 1st Line Technical Support Specialist Location: Gurgaon (5 Days onsite) Hours: UK Shift About the role: We're looking for a customer-focused individual to join our Technical Support Team. You'll be wel…

Skills: Technical Support, Customer Experience, Relationship Building, Communication, Attention To Detail

ONECOM LIMITED logoONECOM LIMITED

Credit Controller (6 Month FTC)

Whiteley, England, United Kingdom · On-site

$26k–$28k/yr

Mid level

Join our Team as a Credit Controller! Location: Whiteley, Fareham Contract: 6 Month FTC Salary: £26,000- £27,500 Per Annum Hours: Monday to Friday 8.30am - 5:00pm About the role: We are seeking a professional, detail‑dri…

Skills: Credit Control, Finance Systems, Excel, Customer Communication, Negotiation

ONECOM LIMITED logoONECOM LIMITED

Credit Controller (6 Month FTC)

Whiteley, England, United Kingdom · On-site

$26k–$28k/yr

Mid level

Join our Team as a Credit Controller! Location: Whiteley, Fareham Contract: 6 Month FTC Salary: £26,000- £27,500 Per Annum Hours: Monday to Friday 8.30am - 5:00pm About the role: We are seeking a professional, detail‑dri…

Skills: Credit Control, Finance Systems, Excel, Customer Communication, Negotiation

ONECOM LIMITED logoONECOM LIMITED

Service Operations Coordinator

Whiteley, England, United Kingdom · On-site

Mid level

Join our Team as a Service Operations Coordinator! Location: Whiteley (Office based) Salary: £26,500 Per Annum + KPI Bonus Hours: Monday – Friday 08:30 – 17:00 About the role: This is a fast‑paced, impact‑driven role for…

Skills: Analytical Skills, Organizational Discipline, SLA Management, Communication, Technical Support

ONECOM LIMITED logoONECOM LIMITED

First Line Engineer

Fareham, England, United Kingdom · On-site

$25k–$27k/yr

Entry level

Join our Team as a First Line Engineer! Location: Cams Estate, Fareham Salary: £25,000-£27,000 Per Annum Hours: 37.5 hours a week between 8:00am- 6:00pm Monday to Friday About the role: Step into a dynamic, client facing…

Skills: Customer Care, Active Listening, Microsoft Office 365, Azure, Windows 7-11

ONECOM LIMITED logo

ITMS Third Line Technician

ONECOM LIMITED

Swindon, England, United Kingdom • On-site

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Senior

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  • Full-time
  • 25 Days Holidays, Bank Holidays, Holiday Buy/Sell Options, Birthday Day Off, 12 Paid Flexible Hours, Volunteer Day
  • Posted 8d ago
  • ~40 hrs/week

Responsibilities

Act as the final escalation point for complex technical incidents and lead root cause analysis to implement long-term fixes. Manage customer IT estates, lead infrastructure upgrades, and provide technical mentoring to junior support teams.

Requirements

Requires deep expertise in cloud, networking, and infrastructure technologies with a strong ability to solve complex problems under pressure. Candidates must possess leadership qualities for mentoring others and a proactive approach to documentation and SLA compliance.

Full job description

Join our Team as a ITMS Third Line Technician!

Location: Swindon

Salary: Competitive

Hours: Monday - Friday - Shift based between 08:00 - 18:00

About the role:

As an ITMS Third Line Technician, you’ll be the go‑to expert for the toughest technical challenges—stepping in when issues go beyond First and Second Line support. You’ll take ownership of critical incidents, shape infrastructure improvements, and play a key role in guiding and developing junior team members. This is a role for someone who thrives on solving complex problems, enjoys collaborating across teams, and wants to make a meaningful impact on both customer environments and internal processes.

What makes you a great fit:

  • Exceptional analytical and problem‑solving ability, especially under pressure

  • Strong leadership qualities with a passion for mentoring others

  • Clear and confident communication, able to translate technical detail for any audience

  • High sense of ownership, accountability, and proactive thinking

  • Ability to juggle multiple priorities while maintaining quality

  • Deep expertise across cloud, networking, and infrastructure technologies

  • Strong documentation habits and experience working to SLAs

  • Empathetic, professional approach to customer interactions

  • Team‑focused mindset with a drive to share knowledge

  • Proactive, adaptable, and creative in resolving issues

  • Strong organisational skills with the ability to meet deadlines

  • Commitment to continuous learning and self‑development

Key responsibilities:

  • Act as the final escalation point for complex technical incidents and service requests

  • Lead root cause analysis for recurring or high‑impact issues and implement long‑term fixes

  • Work with project and solutions teams on infrastructure upgrades, migrations, and deployments

  • Proactively maintain and manage customer IT estates, ensuring security, performance, and accurate documentation

  • Recommend improvements aligned with best practice and evolving customer needs

  • Provide technical leadership and mentoring to First and Second Line teams

  • Create and maintain technical documentation, including diagrams, SOPs, and troubleshooting guides

  • Own change management processes, ensuring risk assessments and rollback plans are in place

  • Monitor system performance and identify opportunities for optimisation or automation

  • Liaise with vendors and third‑party providers for advanced support

  • Contribute to continuous improvement of tools, processes, and service delivery

  • Travel to other Onecom offices and customer sites when required, following company travel policies

Perks for our People:

  • Holidays: 25 days + bank holidays and buy/sell options

  • Other Leave: Birthday day off, 12 paid hours for flexible use, Volunteer day

  • Lifestyle: 9% combined pension contribution and 4x salary life assurance

  • Rewards: Quarterly and annual employee awards, discounts on tech

  • Socials: All-expenses-paid company events

  • Development: In-House Training Academy

  • Wellbeing: 24/7 access to mental health support, Calm App, discounted gym membership, free breakfast & fresh fruit, eye-care vouchers, financial wellbeing support

Who we are:

Onecom is an award-winning provider of Communication Technology, trusted by UK organisations to deliver Simply Brilliant Customer Experiences.

ED&I:

We are committed to equity, diversity, and inclusion, and we encourage candidates to complete our equality monitoring form as part of the application process. Responses are anonymous and help inform our future initiatives.

Related keywords

ITMSThird Line SupportCloudNetworkingInfrastructureRoot Cause AnalysisSLAChange ManagementSOPIT Managed ServicesSystem PerformanceAutomationTechnical LeadershipIncident ManagementService Delivery

About ONECOM LIMITED

LinkedIn
Industry
Telecommunications
Company size
7 employees
Headquarters
FAREHAM
LinkedIn followers
20

Offices: ONECOM HOUSE 4400 PARKWAY WHITELEY, FAREHAM, PO15 7FJ, GB

View all jobs at ONECOM LIMITED

About ONECOM LIMITED

LinkedIn
Industry
Telecommunications
Company size
7 employees
Headquarters
FAREHAM
LinkedIn followers
20

Offices: ONECOM HOUSE 4400 PARKWAY WHITELEY, FAREHAM, PO15 7FJ, GB

View all jobs at ONECOM LIMITED

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