Iridium HR offers a comprehensive range of HR and employment related services to clients across a range of sectors and industries ranging from energy, environmental, safety, construction, IT, manufacturing, childcare, hospitality and retail. Whatever your business, our core values will always be consistently delivered – Expertise, Partnership & Results.

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Iridium HR ensures you and your business are working with a highly qualified and experienced HR professional at all times.


Iridium HR will always get to know your business, your people and your issues, ensuring the delivery of a tailored solution that meets your specific requirements and business needs.


Iridium HR guarantees results - whether that's a quick & compliant turnaround solution to address an urgent issue, efficient and effective management of a longer term change/improvement project or simply a 'soundboard' to discuss your people related concerns, you can be guaranteed the right solution and results for your business.


Sinéad Grehan
Founder and Principal Consultant

Sinéad Grehan (née Gorman) is a highly experienced HR professional with over 20 years’ generalist HR experience across a range of private sector businesses, 14 of which have been at senior management level. In 2018, Sinead established her independent HR Consultancy business, Iridium HR, encompassing the core values of Expertise, Partnership and Results for her clients.

The vision for the business is to deliver results to businesses requiring HR expertise and support on a project/ retainer/ outsourced basis. Current clients include both SMEs requiring start-up HR support but also larger organisations seeking additional/ outsourced HR support.


Employment Law Compliance

Compliance with all Employment Legislation; HR Audits; Risk Management & Documentation - Contracts, HR Policies and Procedures, Staff / Company Handbooks.


Ongoing advice for clients in dealing with a range of employee relations queries and issues, from both a compliance and best practice perspective.


Change Management, Rationalisation and Redundancy Programmes; TUPE Related Projects.

Training & Development

Development of Management / Supervisory competence in managing frontline HR issues, 1 to 1 Management and Supervisory Coaching.

Third Party Representation

Full preparation, response and attendance at 3rd party hearings including the Workplace Relations Commission and Labour Court in ROI and the Industrial Tribunal in NI.

workplace Investigations

Independent / External investigator to manage Disciplinary, Grievance, Bullying / Harassment type investigations in accordance with the Law and Best Practice.


Union Recognition, Negotiation and Bargaining with Shop Stewards and Union Officials.

recruitment & Selection

Independent Interview Panel (e.g. Senior Level Recruitment / Internal Appointments), Best Practice Recrutitment / Interview Skills, ‘Right Fit’ Approach.

A few of my clients

Galway Racecourse

"Having been searching for someone to support the Human Resource needs of our business, Sinead came highly recommend and we have not looked back since connecting with Iridium HR. Sinead has implemented a range of resources for both ourselves as the employer and also for our employees, all of which are in line with the latest employment law. Sinead has proved to be very knowledgeable in relation to all of our Human Resource needs and has provided us with exceptional support and guidance all of which has been vastly beneficial to our business but more importantly to our employees"

Chief Executive, Galway Racecourse

St. John’s Hospital, Limerick

Sinead came highly recommended to us when we needed a HR Business Partner to support our Hospital. We are extremely pleased with the high quality range of HR services provided by Iridium. Sinead worked collaboratively with us on a variety of complex HR matters, providing knowledgeable, reliable and timely advice leading to positive outcomes. Our partnership with Iridium has benefited our organisation in providing a compliant and safe working environment for our employees.


Chief Executive, St. John’s Hospital, Limerick

Greenfield Global, Ireland

Sinead is an outstanding resource for any aspect of the Human Resource field and I highly recommend her without reservation. Her amazing ability to return all calls and e-mails promptly and, despite her very demanding schedule. She is extremely knowledgeable about all areas of Human Resources and very up-to-date about everything that is going on in employment law. She is highly respected in the HR community, and so are her professional opinions. All of her resources are extremely helpful, thorough, and invaluable to those who are developing in the HR field. Her hands-on support, expertise and guidance in several HR disciplines has been very instrumental in the development of our People & Culture function”

People & Culture Manager, Greenfield Global, Ireland


"Iridium HR provide a professional, easy to understand, and super-efficient service"

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Finance Director,


"Sinead has extensive experience and knowledge across the full HR spectrum, as well as a very strong attention to detail; her input has proved invaluable to Enva on many occasions"

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Director, Enva

McMahons Building Providers

“Sinead has extensive experience and displays excellent knowledge that she uses in a practical way to assist us with various HR projects and is a trusted HR partner for our business”

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Managing Director
McMahons Builders Providers Group

Emo Oil

"I have worked with Sinead on many projects over the last seven years and her knowledge, experience and insights are exceptional and very commercially focussed"

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Managing Director,
Emo Oil

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