Summary
Overview
Work History
Education
Skills
Certification
Awards
Hobbies and interests
References
Timeline
Generic

William Nellins

Belfast,Antrim

Summary

Organised Office Manager with proven expertise in streamlining office operations and enhancing productivity. Skilled in team leadership, conflict resolution, and implementing efficient administrative processes. Demonstrates strong ability to manage budgets, coordinate schedules, and improve workflow. Brings proactive approach to problem-solving and commitment to fostering collaborative work environment.

Overview

17
17
years of professional experience
1
1
Certification

Work History

Office Manager

Maid in Ireland
Dublin, County Dublin
08.2023 - 02.2026
  • Managed daily office operations for a busy commercial and residential cleaning company, ensuring efficient service delivery across multiple client sites.
  • Coordinated staff schedules, monitored attendance, and managed timesheets to maintain effective workforce coverage.
  • Acted as primary point of contact for clients, handling enquiries, service bookings, complaints, and contract administration.
  • Maintained accurate financial and operational records, ensuring compliance with company procedures and reporting requirements.
  • Managed accounts receivable, issuing invoices, tracking payments, reconciling accounts, and following up on overdue balances.
  • Managed accounts payable, processing supplier invoices, scheduling payments, and maintaining purchase records.
  • Prepared and submitted VAT returns, ensuring accurate financial reporting and compliance with Revenue deadlines.
  • Assisted with budgeting, expense monitoring, and financial reporting for senior management.
  • Ordered cleaning supplies and equipment, monitored stock levels, and controlled purchasing costs.
  • Supported recruitment and onboarding of staff, maintaining employee records and documentation.
  • Investigated service issues, identified root causes, and implemented corrective actions to improve service quality.
  • Liaised with clients, suppliers, and contractors to resolve operational matters and maintain service standards.

Fleet Management

  • Managed company fleet used by cleaning teams, including vehicle allocation and availability.
  • Scheduled maintenance, servicing, CVRT, and repairs to ensure compliance and minimise downtime.
  • Maintained insurance, compliance, and vehicle usage records.
  • Monitored fuel consumption and running costs.
  • Handled vehicle incidents and ensured adherence to company driving and safety policies..

Credit Control, Revenue Protection/Admin Manager

Electric Ireland (ESB)
Belfast
02.2017 - 08.2023
  • Managing a team of 8-10 people
  • Daily huddles with team members to discuss performance as a team, and also any changes that need to be implemented
  • Making sure my team adheres to service level agreements/targets
  • Managing credit control, revenue protection team, and all back-office duties
  • Dealing with customer complaints and ensuring they were dealt with effectively and to resolving the customer's complaint.
  • Ensuring a high standard of customer service is provided by my team
  • Assisting in shortlisting CVs for potential new employees
  • Carrying out interviews with an interview panel
  • Organising training plans for new employees
  • Providing support to my surrounding teams
  • Daily outbound calls to resolve complaints
  • Maintain databases of customers
  • Ensuring Daily KPI are met for the contact centre
  • Daily NI Market messages workflow actioning
  • Compile monthly and quarterly performance reports
  • Attending weekly KPI meetings to present weekly progress in team stats
  • Attending monthly RCM meetings with senior management
  • Led cross-functional investigations to determine underlying causes of system failures and implemented corrective actions.
  • Applied structured RCA techniques (5 Whys, Fishbone diagrams) to resolve recurring operational issues.
  • Conducted root cause analysis to identify production defects, reducing the error rate for the balance score card limit to 5%.
  • Assisted in developing 5 robotic systems to improve the efficiency of admin work, freeing staff members' time for other important duties
  • Analysing data to spot trends and implementing changes to improve the efficiency of employees
  • Compliance and Regulatory assistance
  • Courses attended and completed: Customer Service, Leadership and Management, Revenue Protection, Credit Control Management, Vulnerable Customers, Complaints Handling
  • Excellent knowledge of the SAP system
  • UAT Testing - CRM system amendments and improvements
  • Received SPARKS award - going above and beyond
  • Team Leader of the year award
  • Interviewer trained
  • First Aid trained

Customer Service

Electric Ireland (ESB)
Belfast
10.2015 - 02.2017
  • First point of contact for any customer of Electric Ireland
  • Back office administration work - working off daily spreadsheets
  • Credit control to prevent revenue loss
  • Being a part of a small team, but working effectively to ensure all work is completed on time
  • Dealing with customer complaints and ensuring they were dealt with effectively
  • Ensuring a high standard of customer service regardless of the situation
  • Providing as much help to my surrounding team
  • Daily outbound calls to complete customers switch to Electric Ireland
  • Working off systems like SAP/Liberty
  • Being a part of Electric Ireland, growing from under 10000 customers to over 90000
  • Accounts payable - Temporary

Customer Service Advisor

Tech Mahindra
Belfast City Centre, County Antrim
05.2014 - 10.2015
  • First point of contact to any broadband customer for EE
  • Handling calls and dealing with issue to a target handling time
  • Higher level escalation complaints and callbacks
  • Floor support for new agents
  • Working apart of a team to insure that all work in completed on time and with the right standard
  • Back office administration work
  • Insuring that the customer left the phone call satisfied and handled the issue well

Direct Outbound Sales Advisor

Stream
Belfast City Centre, County Antrim
03.2013 - 03.2014
  • Worked on a specific campaign targeting new and existing clients and making somewhere in the region of 250 to 350 calls per day
  • Ensuring that I had at least a 2 minute conversation with roughly 100 potential / existing customers per day
  • Consistently met targets and achieved bonus
  • Built rapport with customers in a very short period of time
  • Developed my communication skills
  • Handled customer complaints
  • Was a strong team player, supporting and encouraging other team members
  • Maintained a positive & enthusiastic attitude in a highly pressurised environment
  • Became very target driven, self-motivated and determined to succeed
  • Worked within the constraints of a regulated environment (FSA)

Customer Service - BT

Concentrix
Belfast City Centre, County Antrim
01.2013 - 03.2014
  • Dealt with customer queries / complaints in an efficient, polite and professional manner
  • Worked to specific targets & consistently met & exceeded these
  • Developed a range of skills by conversing with clients, listening to and understanding their BT related issues & taking the best action to resolve these speedily and effectively
  • Various administration duties as required

Door to door sales

Lovefilm
01.2012 - 06.2012
  • Sold Lovefilm subscriptions door to door
  • Was targeted to hit 10 sales per week
  • Initially was hitting 5-6 sales but brought this up to 10+ in no time
  • Gained team lead experience as I was given the responsibility of managing small teams of 3 - 4 less experienced sales advisors

Sales Assistant

Lifestyle Sports
09.2008 - 11.2009
  • Provided a high standard of customer service
  • Part took in daily stock takes
  • Operated the till

Education

Diploma of Higher Education - Cybersecurity

UCD Diploma
2025

Certificate of higher education -

Google Cybersecurity - Coursera

GCSE - English

Knockbreda

GCSE - Mathematics

Knockbreda

GCSE - History

Knockbreda

GCSE - Double award science

Knockbreda

GCSE - I.T

Knockbreda

Diploma of Higher Education - Diploma

UCD Diploma - Office Administration Manager - 2024
Dublin

Skills

  • Team leadership
  • Project management
  • Data analysis
  • Risk assessment
  • Office administration
  • Complaint resolution
  • Communication skills
  • Problem-solving
  • Calm under pressure
  • Strategic planning
  • Event coordination
  • Customer service
  • Team management
  • Conflict resolution
  • Staff training
  • Payroll administration
  • Compliance management
  • Business administration
  • Client relations
  • Written and verbal communication
  • Root cause analysis

Certification

  • Google Cert - Cybersecurity - May 2025
  • UCD Diploma - Cybersecurity - May 2025
  • Advanced Microsoft Power BI - Oct 2025
  • Working Effectively with Stakeholders - Oct 2025
  • UCD Diploma - Office Administration Manager - 2024

Awards

Sparks award - ESB, 2019-09-01, Received an award from ESB for going above and beyond for my staff

Team Leader of the Year 2021 - ESB

Hobbies and interests

  • Coaching U12 Football team

References

  • Tatiane Sparsis - Maid in Ireland (Director) - +353899439360/tati@maidinireland.com
  • Patrick McAuley - Electric Ireland (Operation Lead) - 07784129734

Timeline

Office Manager

Maid in Ireland
08.2023 - 02.2026

Credit Control, Revenue Protection/Admin Manager

Electric Ireland (ESB)
02.2017 - 08.2023

Customer Service

Electric Ireland (ESB)
10.2015 - 02.2017

Customer Service Advisor

Tech Mahindra
05.2014 - 10.2015

Direct Outbound Sales Advisor

Stream
03.2013 - 03.2014

Customer Service - BT

Concentrix
01.2013 - 03.2014

Door to door sales

Lovefilm
01.2012 - 06.2012

Sales Assistant

Lifestyle Sports
09.2008 - 11.2009

Diploma of Higher Education - Cybersecurity

UCD Diploma

Certificate of higher education -

Google Cybersecurity - Coursera

GCSE - English

Knockbreda

GCSE - Mathematics

Knockbreda

GCSE - History

Knockbreda

GCSE - Double award science

Knockbreda

GCSE - I.T

Knockbreda

Diploma of Higher Education - Diploma

UCD Diploma - Office Administration Manager - 2024
William Nellins