John O'Sullivan
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John O'Sullivan Email & Phone Number

Senior Manager | Telecommunication | ICT Business Solutions | Respect | Integrity | Innovation | Accountability | Customer Centric | Build for Growth & Scale | Strategic & Tactical | People Development | Change Adopter
Location: County Kildare, Ireland 10 work roles 7 schools
1 work email found @o2.com LinkedIn matched
✓ Verified Jul 2026 4 data sources Profile completeness 86%

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Role
Senior Manager | Telecommunication | ICT Business Solutions | Respect | Integrity | Innovation | Accountability | Customer Centric | Build for Growth & Scale | Strategic & Tactical | People Development | Change Adopter
Location
County Kildare, Ireland

Who is John O'Sullivan? Overview

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John O'Sullivan is listed as Senior Manager | Telecommunication | ICT Business Solutions | Respect | Integrity | Innovation | Accountability | Customer Centric | Build for Growth & Scale | Strategic & Tactical | People Development | Change Adopter based in County Kildare, Ireland. AeroLeads shows a work email signal at o2.com and a matched LinkedIn profile for John O'Sullivan.

John O'Sullivan previously worked as Senior Business Manager at Three Ireland and Business Solutions Manager at Three Ireland. John O'Sullivan holds Senior Executive Programme from Irish Management Institute.

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Profile bio

About John O'Sullivan

People and business focused leader with over 25 years’ experience in telecommunications focusing on design, customer experience, product development, sales, strategic / tactical business and people leadership. Decisive leader who consistently delivers real results, collaboratively in challenging times. Success in delivering business & organisation wide transformational projects on time and within specified budgets. Track record in leading through change, ensuring effective delivery including identifying and resolving regulatory and operational issues. Effective communicator with the ability to deliver concise, meaningful content to company and leadership audience.

Listed skills include Core Network, Voice Services, Ict, Telecommunications, and 39 others.

10 roles

John O'Sullivan work experience

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Senior Business Manager

Led the development and execution of short, medium and long-term Three core business objectives: maximise non-core service revenue, nurture and grow client base through scaling adjacencies and transform for the future through the delivery of new products aligned to market forces and competitor analysis.- Strategic / Tactical thinking in sales planning , business strategic reviews and research methods.- Accountable for revenue growth / forecasting of SME budget in new and existing business- Business Lead for development of cross-functional collaboration on new product development - mobile security & IP telephony processes, SLAs, processes, marketing and change management procedures.- Builds trust, influences effectively, strong relationships crafted internally and externally.- Reporting to and managing Senior Leadership through communication engagement at Senior Management level.- Leads, empowers, challenges to achieve business objectives. Coaches and mentors to ensure consistent high performance and effective business delivery from across the sales teams and account managers.- Proactively drives continuous improvement from team outputs through refinement of shape and content in reporting and market analysis. - Communication frequency and transparency, open and honest inter team engagement, promotion of a positive “can do” attitude.- Maintain and develop effective relationship with group and other stakeholders, despite competing pressures.- Cross function collaborative responsibility in delivering overall Business Directorate budgeted in all market segments.- Business Lead on the development of Business Directorate HR competency and education programmes.

Jan 2018 - Jan 2021

Business Solutions Manager

28/29 Sir John Rogersons Quay, Docklands, Dublin 2

I manage and guide a unit of field based Technical and Sales Business Specialists. Consultative selling the 3Connected Solutions suite of products and services with a strong commercial focus on driving new business while identifying and cross selling into existing Customer businesses. Supporting the sales community, working across many channels from small to mid sized business customers.- Manage team targets and sales pipeline- Mange day to day team operations- Plan and execute team development - Manage and build cross functional team relationships- Coaching - Attend C-Suite engagements

Sep 2014 - Jan 2018

Sales Team Leader

Managing a team of sales professionals who work across the small business segments of the Three Ireland Business Directorate covering ICT Services. At Team Level I manage team budget and sales pipeline, day to day team operations. I planned and executed team development through 1:1s and team lead CPDs.

Jan 2013 - Sep 2014

Solutions Architect

Sir John Rorgersons Quay

I’m responsible for the design and mapping of Customer business requirements to technological platforms to deliver day to day operational efficiencies and cost savings to the Customer’s business. I work closely with the respective parties including the Relationship Manager and third party companies to complete solution for the customer.Responsibilities include: Participate in analysis and process redesign along with the Relationship managerProduce a detailed functional design document to match customer requirementsProduce a technical specification for custom development and systems integration requirementsProvide current best practice and 3rd Party solution alternatives as part of the functional design documentParticipate in training design, documentation and delivery efforts in concert with the Relationship ManagerParticipate and lead, when needed, the project meetings with the customerParticipate in internal projects as required

Jul 2012 - Dec 2013

Ict Data Specialist

Sir John Rogersons Quay, Docklands, Dublin 2

Responsibility for the revenue target of the ICT products/servicesMaximise revenue and build customer relationships Develop the sales team ability to identify, advance and close ICT product/service opportunities Manage and evaluate customer expectations and comprehend customer requirements.Forecast trends for the ICT product/serviceTrack and report ICT sales performance

Jan 2010 - Jul 2012

Technical Consultant

Technical consultancy to internal and external Customers based on product and work around solutions to non o2 devices. Advisement of solutions available to Customer to help meet their business requirements into the future

Sep 2008 - Jan 2010

Senior Engineer

O2

Worked in City Planning and Optimisation of GSM / GPRS network

Jun 2001 - Sep 2008

Switch Engineer

Ericsson AXE10 Programmer for Spirit Telecom (Irish Call Card Business). Involved in all activities of technologies from order to live service including evaluation, specification, network design, delivery, installation and commissioning, network integration, acceptance testing.

Oct 2000 - May 2001

Non Commissioned Officer

Ireland

Lead Technician on PBX and Point to Point wireless communications within the Eastern Command

May 1998 - Sep 2000

Signalman

In charge of a section of Signalmen assigned to maintenance of PABX, Transmission network, voice and data systems within the Eastern Command

Aug 1992 - May 1998
7 education records

John O'Sullivan education

Senior Executive Programme

A dynamic introduction to the networked and interdependent business environment. Expectations for leaders in this environment and how you.

Technology Risk And Data Incident Management

To gain an understanding of the key concepts, trends and threats in cybersecurity today and the pillars of identify: Protect, Detect.

Situational Leadership

The Ken Blanchard Companies

- Situational Leadership - Coaching Through Leadership - Inclusive Leadership - Change Management Leadership

Mini Mba (Non Formal)

● The role of the frontline manager ● Effective planning techniques ● Managing your priorities ● Delegation ● Decision making ● Problem.

Bachelor Degree, Technology Management, 1:1, Gpa Award

Activities and Societies: Class Representative @ student / college board meetingsBusiness Stream: Subjects included Employee Relations.

Diploma Of Education, Telecommunications & Electronics, Credit

Army Apprentice School
FAQ

Frequently asked questions about John O'Sullivan

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What is John O'Sullivan's role at their current company?

John O'Sullivan is listed as Senior Manager | Telecommunication | ICT Business Solutions | Respect | Integrity | Innovation | Accountability | Customer Centric | Build for Growth & Scale | Strategic & Tactical | People Development | Change Adopter.

What is John O'Sullivan's email address?

AeroLeads has found 1 work email signal at @o2.com for John O'Sullivan.

Where is John O'Sullivan based?

John O'Sullivan is based in County Kildare, Ireland.

What companies has John O'Sullivan worked for?

John O'Sullivan has worked for Three Ireland, Three., Telefónica Ireland Limited, O2 Ireland, and O2.

How can I contact John O'Sullivan?

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What schools did John O'Sullivan attend?

John O'Sullivan holds Senior Executive Programme from Irish Management Institute.

What skills is John O'Sullivan known for?

John O'Sullivan is listed with skills including Core Network, Voice Services, Ict, Telecommunications, Gsm, Customer Experience, Documentation, and Software Documentation.

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