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Proofpoint Inc VERIFIED EMPLOYER

Sr. Software Engineer.

Software Engineering & Dev Full-Time

Sr. Software Engineer: our view in 3 lines...

  • The Role:This is a senior software engineering role on a cybersecurity team that builds services to protect email, data, and AI workflows.
  • The Person:The person will develop and support email processing services, integrations, and data infrastructure, lead cross-team projects into production, and mentor colleagues.
  • Requirements:The role calls for extensive backend development experience, public cloud exposure with AWS, Azure or GCP, and experience working at scale.

About the role

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 the Inception team within our Core Email Protection API group. The team owns the email processing flow, integrations with other Proofpoint services, and critical data infrastructure, including Kafka clusters and data lakes. You'll join at a pivotal moment, as we scale our services to meet the enterprise-grade demands of our customers.

 

Your day-to-day
 

  • Engage with the world of Python 3 and AWS, architecting robust distributed systems designed to manage immense volumes of data with exceptional speed.
  • Collaborate across various functions, harnessing team synergy to deliver premium solutions and outcomes for our esteemed customers.
  • Apply your keen product mindset and tech savvy to help shape Defender's future, contributing to our progressive vision.
  • Cultivate a supportive environment by providing thoughtful, actionable feedback, fostering growth and development among team members.
  • Embrace the responsibility of maintaining and supporting our essential business systems, always mindful of the interplay between scale, latency, and cost.
  • Take on the complex task of processing highly sensitive data, a challenge that will refine your skills in data security and handling.
  • Guide and support your team members, enhancing the team's effectiveness and productivity by applying your knowledge and experience.
  • Spearhead cross-team projects, guiding them from their conception through to their deployment in production.

What you bring to the team

  • Possess extensive experience in Backend development (Codebase is Python, but can consider transition from Java or .NET)
  • Public cloud exposure with AWS, Azure or GCP
  • Track record of working at scale and solving diverse technical challenges
  • Product-focused mindset, understanding the impact of your decisions on customers and the organization
  • Ability to proactively identify and solve problems before they impact progress
  • Be willing and able to lead and shape the technical direction of projects, aligning with business goals
  • Mentor peers, sharing knowledge and fostering a culture of continuous improvement.
  • Demonstrate advanced problem-solving abilities, navigating complex challenges with innovative solutions
  • Collaborate effectively with cross-functional teams, influencing outcomes and driving project success
  • Excel in communication, capable of empathetic and constructive dialogue in both technical and non-technical settings with a varied audience

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!

Published October 24, 2026
Location Belfast, United Kingdom
Job Type Full-Time