About Us:
Proofpoint is a global leader in human- and agent-centric cybersecurity. We protect how people, data, and AI agents connect across email, cloud, and collaboration tools. Over 80 of the Fortune 100, 10,000 large enterprises, and millions of smaller organizations trust Proofpoint to stop threats, prevent data loss, and build resilience across their people and AI workflows. Our mission is simple: safeguard the digital world and empower people to work securely and confidently. Join us in our pursuit to defend data and protect people.
How We Work:
At Proofpoint you’ll be part of a global team that breaks barriers to redefine cybersecurity guided by our BRAVE core values:
Bold in how we dream and innovate
Responsive to feedback, challenges and opportunities
Accountable for results and best in class outcomes
Visionary in future focused problem-solving
Exceptional in execution and impact
The Role
We're looking for a Sr. Software Engineer to join our team and help build, scale, and maintain the systems powering our platform. You'll work across a large, complex micro-services architecture. This role is for someone who enjoys digging into hard problems, isn't afraid of ambiguity, and wants to keep pushing their own skills forward.
Responsibilities
Design, build, and maintain services across our micro-service ecosystem
Debug complex, cross-service issues — you'll need to dig deep, trace root causes, and see problems through to resolution
Participate in an on-call rotation, responding to and resolving production issues
Collaborate closely with teammates, clearly communicating technical trade-offs, decisions, and progress
Navigate ambiguous problems and evolving requirements, helping bring clarity and direction to the team
Use AI-First and AI-assisted development tools where practical to improve velocity and quality
Take on unglamorous but necessary work when the team needs it — tech debt, infra-migrations
Continuously look for ways to innovate and improve how the team builds and operates software
What You Bring to the Team
Proven software engineering experience with a level of seniority
Proficiency in Java, Go, and Python
Strong debugging and problem-solving skills — comfortable tracing issues through complex, distributed systems
Experience with (or strong aptitude for) large-scale microservice architectures - Comfortable with on-call responsibilities
Openness to AI-first development practices and tools
Excellent communication skills and a collaborative, team-first mindset
Comfortable operating in ambiguous situations without needing every requirement fully spelled out
A self-starter mentality — willing to challenge yourself, take initiative, and step up wherever the team needs help, including on less glamorous work
BSc Degree in Computer Science or a related field (or equivalent practical experience
Why Proofpoint?
At Proofpoint, we believe that an exceptional career experience includes a comprehensive compensation and benefits package. Here are just a few reasons you’ll love working with us:
Competitive compensation
Comprehensive benefits
Career success on your terms
Flexible work environment
Annual wellness and community outreach days
Always on recognition for your contributions
Global collaboration and networking opportunities
Our Culture:
Our culture is rooted in values that inspire belonging, empower purpose and drive success-every day, for everyone.
We encourage applications from individuals of all backgrounds, experiences, and perspectives. If you need accommodation during the application or interview process, please reach out to [email protected].
How to Apply
Interested? Submit your application along with any supporting information- we can’t wait to hear from you!
Proofpoint Belfast, Northern Ireland Office
11 Weavers Court Linfield Road, Belfast, United Kingdom, BT12 5GH
