Sr. Software Engineer (Java, Go)

Location: Belfast, Northern Ireland

Time Type: Full time

Job Description

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 accessibility@proofpoint.com.

How to Apply

Interested? Submit your application along with any supporting information- we can’t wait to hear from you!