Email Security Engineer Proofpoint Specialist

Email Security Engineer Proofpoint Specialist

Grant Thornton Advisors LLC and Grant Thornton Ireland (GT) have recently come together to form a powerful multinational multidisciplinary platform that delivers premier advisory tax and independent audit services. With $2.7 billion in revenues and nearly 60 offices across the U.S. Ireland the UAE and other territories our combined platform brings enhanced solutions and capabilities supported by cutting-edge technologies and a team of nearly 13000 quality-driven professionals.

Grant Thornton Ireland contributes nearly 3000 people across 9 offices in Ireland the Isle of Man Gibraltar and Bermuda and is part of a global network of over 68000 professionals spanning more than 149 countries. Together we offer a truly global reach backed by deep local knowledge and national expertise.

By joining forces we strengthen our ability to act as trusted advisors who make business more personal investing in relationships and empowering clients to make the right decisions for their organisations today and into the future. Whether working with the public sector to build thriving communities partnering with regulators and financial institutions to build trust or supporting diverse businesses to achieve their goals Grant Thornton now provides a singular seamless client experience grounded in collaboration innovation and a shared commitment to the issues that matter most.

At GT Ireland we dont just predict your future we build it.

A Career at GT

Looking for a more fulfilling role in professional services One where fresh thinking collaboration and diversity are valued At Grant Thornton we do things differently.

What does this mean for you

A career in a more inclusive working environment a more collaborative work culture a more supported flexible working role more possibilities to grow and more opportunities to help shape the future for your clients. We respect and value your experience. And we want you to bring your authentic self to work and be at your best. It is how it should be.

Grow with us

At Grant Thornton we care about our people and work hard to make you feel valued. If you are looking to deepen and develop your skills knowledge and experience throughout your career then that is what you will get and more.

Position Overview

We are seeking an experienced Email Security Engineer with deep expertise in Proofpoint Email Security Gateway to strengthen our global cyber defense program. This role will focus on designing managing and optimizing secure email infrastructure to defend against phishing malware and advanced threats. The engineer will play a critical role in ensuring secure communication across our global workforce while balancing user experience and operational efficiency.

Key Responsibilities

• Administer configure and maintain Proofpoint Email Security Gateway and related modules (TAP TRAP DLP encryption impersonation protection etc.).
• Develop and manage email security policies for threat prevention data protection and regulatory compliance.
• Monitor and analyze email traffic quarantines logs and alerts to identify investigate and remediate threats.
• Conduct rule set tuning phishing banner adjustments and reporting for continuous optimization.
• Collaborate with SOC incident response and threat intelligence teams to respond to phishing campaigns and advanced email-based threats.
• Provide expertise in user awareness campaigns by correlating security telemetry with phishing simulation results.
• Document configurations standard operating procedures and technical controls for global deployment.
• Partner with Microsoft 365 security teams to ensure consistent enforcement of tiered email security controls across platforms.
• Support M&A integrations by onboarding new domains and aligning email security posture with global standards.
• Ensure compliance with internal security requirements and external regulations (GDPR DORA ISO etc.).
• Participate in an on-call rotation to support global operations.

Qualifications & Skills

Required:

• Bachelors degree in information security Computer Science or related field (or equivalent experience).
• 5 years of hands-on experience in email security with strong expertise in Proofpoint administration.
• Proficiency in SMTP DNS (SPF DKIM DMARC) TLS and email routing.
• Solid understanding of phishing tactics social engineering threats and business email compromise (BEC).
• Experience with incident response log analysis and security reporting.
• Strong troubleshooting and problem-solving skills in enterprise environments.
• Excellent communication skills to engage with both technical teams and business stakeholders.

Preferred:

• Proofpoint Certified Administrator (or equivalent certification).
• Experience integrating Proofpoint with Microsoft 365 or Google Workspace security ecosystems.
• Familiarity with SIEM tools SOAR automation and phishing simulation platforms.
• Knowledge of global regulatory and compliance requirements related to email security and data protection.

Life at GT

Reward and benefits:

Our reward and benefits are designed to create an environment where our people can flourish. We are committed to building a culture where our people have access to the necessary benefits to help promote a healthy lifestyle and thrive.

Equity diversity and inclusion
At Grant Thornton we provide equitable opportunities for all our colleagues. We are a responsible sustainable business where equitydiversityand inclusion(ED&I)isattheforefrontofourworkplace culture agendaand todaywe continue to build and develop on our existing ED&I structure and strategy to meet our workplace culture needs. People are at the heart of our business and teams built with varied backgrounds racial differences cultures sexual orientations religious orientations ages gender identities abilities and family types present diverse viewpoints which need to be heard and valued.

We are all at our best when we are able to be ourselves and we view integrity and authenticity as integral values to bring to our day-to-day work-life at the firm. We are excited to see the personality and perspectives you will bring to our team because we know we will all benefit from them. Diversity of thought background and experience enables better decision-making improves the quality of our delivery and helps us to meet the needs of our clients. Our firm is built on people and their ideas so we want to hear all the new perspectives and fresh thinking you have to offer. You form the bedrock of our firms best-practice principles and we will champion you as leaders from day one.

Recognition:

We want to create a culture of recognition and celebrating success by saying thank you to people who surpass our expectations and recognising the right values and behaviours. Our Shout Out recognition scheme is our way of highlighting and promoting achievements. Whether you simply want to say thank you celebrate a special occasion or give an award for doing something exceptional you can do all of this and more through the scheme.