Reliability Engineer – Mechanical Bias 

Marshalls Road, Belfast 

Permanent 

Closing date: 28/09/2026 

About us 

With over 200 brands sold in nearly 180 countries, Diageo is home to some of the world’s most iconic drinks. From Johnnie Walker and Guinness to Tanqueray, Smirnoff and Don Julio, we craft brands chosen for life’s moments — from everyday connections to landmark celebrations. 

Bring your talent, curiosity and ambition, and strive for your personal best alongside people who challenge, support and learn from each other. Together, as one outstanding team, we keep learning, improving and raising the bar for our brands, our business and each other. 

Join us and play your part in making life’s moments mean a little more. 

Join our Supply Chain and Manufacturing Team 

Our Supply Chain and Manufacturing team are problem-solvers, sourcing, producing, and delivering our much-loved brands to delight customers around the globe. Over half of Diageo’s 30,000+ people work in Supply Chain and Manufacturing. It’s an intricate and sophisticated operation that’s the product of logistical, manufacturing, and technical collaborations. 

About the role 

As a Reliability Engineer, you will play a pivotal role in a dynamic team ensuring our equipment is efficient, reliable, and well-maintained to meet production goals. You will lead efforts to: 

• Enhance Asset Care KPIs by delivering effective maintenance, problem-solving, and asset improvement. 

• Ensuring maintenance plans are aligned with failure mode assessments. 

• Transition the department to a proactive and condition-based engineering approach, reducing reliance on reactive maintenance. 

• Root cause major breakdowns and implement solutions that improve asset reliability. 

• Utilise data analysis to scope and implement improvement projects that align with compliance, cost, and performance objectives. 

• Ensure critical spares and stock levels are optimised for operational efficiency. 

• Provide technical expertise during significant breakdowns, machine set-ups, and capital project commissioning. 

• Drive continuous improvement initiatives, collaborating across teams to deliver impactful results. 

You will be a key contributor to developing a culture of excellence, coaching peers, and ensuring all Planned Preventative Maintenance (PPM) tasks are completed effectively. 

About You 

We are seeking a proactive and detail-oriented professional with the following qualifications and attributes: 

• Recognised Electrical or Mechanical apprenticeship with an HNC or equivalent. 

• Skilled in diagnosing and repairing complex machinery faults. 

• Experience with problem-solving techniques such as 5 Whys, RCPS, and familiarity with maintenance systems like SAP. 

• Proficient in Microsoft Office and comfortable with data-driven decision-making. 

• Knowledge of Reliability/Maintenance methodologies. 

• Fault finding expertise. 

• Leadership qualities with the ability to inspire and mentor others. 

• Excellent communicator and a collaborative team player. 

• Conscientious, detail-oriented, and solution-focused. 

• Positive, adaptable, and committed to safety and quality standards. 

If you are a driven and innovative professional ready to take on a challenge, apply now to join our team and make a difference! 

Working with Us 

We recognise and value performance, offering our people a highly competitive Rewards and Benefits package including:  

• Share schemes. 

• Pension - Diageo pays up to 14% 

• Product Allowance 

• 10% Annual Bonus 

• 25 Days Annual Leave plus public holidays 

• And much more! 

Our purpose is crafting iconic drinks chosen for life’s moments. And it’s our people, with their different experiences, perspectives and talents, who make that possible.