Software Engineer - AI Agents (Satori)

Proofpoint; Belfast City District; Hybrid; GBP 75,000 - 110,000; Full time

Benefits offered by this job

Competitive compensation

Comprehensive benefits

Flexible work environment

Global collaboration

Job summary

Proofpoint is hiring a Software Engineer for our Satori AI agent platform. You will design and build components powering autonomous security operations, with fellow engineers using the platform to protect Fortune 100 customers 24/7/365.

We value Python and TypeScript skills, experience with microservices and cloud deployments, and a proactive attitude to ship robust software at scale. This role requires on-site work in Belfast with some flexibility distributed across teams worldwide.

Qualifications

• BSc or MSc in Computer Science or related field, or equivalent experience.
• Experience designing, developing, and supporting microservices in a cloud environment.
• Proficiency in Python; TypeScript/Node preferred.
• Experience with AI agent frameworks and LLM SDKs.

Responsibilities

• Design agent runtimes and SDKs for the Satori platform and contribute to release-ready tooling.
• Ship production-grade code and own services; collaborate with product tech leads.
• Turn one-off integrations into reusable platform capabilities across teams.

Skills

Python

TypeScript/Node

Microservices

Cloud

LLM/AI agents

Observability

Proactive attitude

Education

BSc or MSc in Computer Science or related field

Tools

LangGraph

OpenAI/Anthropic Agents SDK

MCP

LangChain

OpenTelemetry

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

Proofpoint is hiring a Software Engineer on Satori, our enterprise AI agent platform driving the future of autonomous security operations. Satori delivers security outcomes by orchestrating capabilities across the entire Proofpoint product portfolio and external partners. In this application engineering role, you will design and build significant components of the Satori platform. Your direct users are fellow product engineers who protect business-critical communications for Fortune 100 customers 24/7/365.

Responsibilities

You will help design the agent runtimes and SDKs product teams build on, and contribute to what "release-ready" means at Proofpoint: the eval suites, safety checks, telemetry, and AuthX that gate every rollout. The primitives you help shape — from prompt management to observability — influence how mission-critical agentic software ships across the company. You will partner with product tech leads to turn one-off integrations into reusable platform capabilities, and like every engineer here, you will be responsible for shipping code and owning production-grade services. This is a uniquely-challenging role: we empower small teams to deliver robust results, the systems are non-deterministic, and the bar is high. The opportunity for meaningful impact is significant. If this excites you, we want you on our team.

What You Bring to the Team

Able to work on-site four days per week at our Belfast office Proven experience designing, developing, and supporting applications in a microservices cloud environment. Personal interest in AI agents — you tinker with agent frameworks or LLM SDKs (LangGraph, OpenAI/Anthropic Agents SDK, MCP, LangChain, or similar) and keep up with the field. Experience contributing to agentic or LLM-based systems in production, including familiarity with the eval, observability, and rollback story. Demonstrated learning velocity and curiosity; driven to understand systems beyond surface-level usage at enterprise scale. Development experience with Python; TypeScript/Node a plus. Track record of debugging distributed systems from traces; experience with OpenTelemetry's GenAI semantic conventions a plus. Cloud-native development, automating deployments, familiarity with container systems; AWS experience a plus. Excellent time management skills, comfortable coordinating work with colleagues in the US and around the globe. Strong communication and collaboration — contributing to architectural conversations across teams, working with stakeholders, and mentoring more junior engineers. A proactive "get it done" attitude and willingness to move forward through uncertainty. Readiness to participate in on-call rotation during times coordinated with US-based colleagues. BSc or MSc in Computer Science or related field, or equivalent experience.

Beneficial Experience

Experience with AI-driven development (e.g. Claude Code, Codex) and agentic communication protocols (e.g. A2A, MCP) preferred. Large scale event processing a plus, but not required.

Why Proofpoint?

• 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 [e-mail].

Proofpoint has been honored with six Best Places to Work Awards in 2024 by workplace culture leader Comparably, including Best Company Career Growth, Best Company Outlook, Best Global Culture, Best Engineering Teams, Best Sales Teams, and Best HR Teams. We are the leader in human‑centric cybersecurity. Half a million customers, including 87 of the Fortune 100, rely on Proofpoint to protect their organizations. We’re driven by a mission to stay ahead of bad actors and safeguard the digital world. Join us in our pursuit to defend data and protect people. Our BRAVE Values: At Proofpoint, we are BRAVE in everything we do, and our values aren’t just words—they shape how we work, collaborate, and grow. We seek people who are bold enough to challenge the status quo, responsive in the face of ever‑evolving threats, and accountable for delivering real impact. We value those with a visionary mindset who anticipate what’s next and push cybersecurity forward, and we celebrate exceptional execution that ensures we continue to defend data and protect people.

Proofpoint is an equal opportunity employer, we hire without consideration to race, religion, creed, color, national origin, age, gender, sexual orientation, marital status, veteran status or disability. Find your network, your allies, and your biggest fans. We know that work is simply better when you’re surrounded by people who inspire you—who share ideas, cheer you on, and genuinely want to see you succeed. That’s why we offer social circles, sponsored networks, and connection points across teams and time zones—to help you find your people, build your community, and thrive together. This isn’t just a job—it’s a mission to protect people and defend data in a world that never slows down. We’re building the future of human‑centric cybersecurity, and that future belongs to all of us. We take ownership, move fast, and hold ourselves accountable—because that’s what it takes to stay ahead. And we do it together, winning as one. Be empowered to reach your full potential through meaningful challenges and personalized support—designed around you and your goals. Whether you're growing as a leader or leveling up from great to exceptional as an individual contributor, we’re here to help you get there.