Associate Software Engineer - AI Agents (Satori)

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 innovateResponsive to feedback, challenges and opportunitiesAccountable for results and best in class outcomesVisionary in future focused problem-solvingExceptional in execution and impactThe Role Proofpoint is hiring an Associate 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 build features and services on the Satori platform. Your direct users are fellow product engineers who protect business-critical communications for Fortune 100 customers 24/7/365.Responsibilities Working closely with senior and staff engineers, you will implement components of the agent runtimes and SDKs that product teams build on, and help uphold what "release-ready" means at Proofpoint: the eval suites, safety checks, telemetry, and AuthX that gate every rollout. You will learn how mission-critical agentic software gets built across the company, and you will be responsible for shipping code and helping operate 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 growth and transformational impact is significant. If this excites you, we want you on our team.What You Bring to the TeamAble to work on-site four days per week at our Belfast officeExperience with designing, developing, and supporting applications in a microservices cloud environment, or entry into the role with a Master's degree.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.Exposure to agentic or LLM-based systems, and curiosity about the eval, observability, and rollback story that takes them beyond prototypes.Demonstrated learning velocity and curiosity; driven to understand systems beyond surface-level usage and eager to learn enterprise platform-level tradeoffsSolid working experience with Python; TypeScript/Node a plus.Comfortable debugging services and reading logs and traces; exposure to OpenTelemetry a plus.Familiarity with cloud-native development and container systems; AWS experience a plus.Excellent time management skills and willingness to coordinate work with colleagues in the US and around the globe.Excellent communication skills and a collaborative, teachable attitude.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 ExperienceInterest in AI-driven development (e.g. Claude Code, Codex) and agentic communication protocols (e.g. A2A, MCP) preferred.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 compensationComprehensive benefitsCareer success on your termsFlexible work environmentAnnual wellness and community outreach daysAlways on recognition for your contributionsGlobal collaboration and networking opportunitiesOur 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 to ApplyInterested? Submit your application along with any supporting information- we can’t wait to hear from you!SummaryLocation: Belfast, Northern IrelandType: Full time