At a Glance
- Tasks: Lead the development of cutting-edge UI for our enterprise AI platform.
- Company: Join Proofpoint, a leader in cybersecurity innovation.
- Benefits: Enjoy competitive pay, flexible work, wellness days, and career growth.
- Other info: Work on transformative projects for Fortune 500 clients.
- Why this job: Make a real impact in a fast-paced, collaborative environment.
- Qualifications: Experience in full-stack development with JavaScript, React, and TypeScript.
The predicted salary is between 58000 - 98000 £ per year.
Requirements
- Able to work on-site four days per week at our Belfast office
- Extensive hands-on engineering experience developing large-scale systems using Java Script, Type Script, or similar
- Direct hands-on experience with and deep knowledge of React and Type Script, plus one or more UI back-ends (Rails, Swing, Node, etc.)
- Micro-frontend (MFE) experience, or a desire to ramp into it quickly
- Cloud-native development experience, including automating deployments and familiarity with container systems; AWS experience is a plus
- A keen eye for design and user experience
- Ability to read API specs, identify gaps, and raise them early
- Awareness of front-end security, web standards, and accessibility
- Strong debugging skills
- Excellent time management skills and comfort coordinating work with colleagues in the US and globally
- Excellent communication and leadership skills, including managing stakeholders and mentoring other engineers
- A proactive get-it-done attitude and willingness to move forward through uncertainty
- Readiness to participate in on-call rotation at times coordinated with US-based colleagues
- Interest in agent-generated UI (e. g. A2UI, json-render)
- BSc or MSc in Computer Science or related field, or equivalent experience
- Experience with AI-driven development (e. g. Claude Code, Codex) and agentic communication protocols (e. g. A2A, MCP) preferred
- Large-scale event processing experience is a plus, but not required
Responsibilities
- Set the technical direction for Mission Controls UI across the full stack, including the React front end, the APIs behind it, and the automation that deploys and tests the work
- Act as the integrator across product, design, and backend teams
- Bring Figma designs to life
- Surface gaps early and proactively unblock others
- Build the experience that turns powerful agents into a product customers trust at enterprise scale
- Help create a product that is transparent, controllable, and dependable 24/7/365
- Technologies
- AI
- AI Agents
- API
- AWS
- Backend
- Claude Code
- Cloud
- Figma
- Frontend
- JSON
- Java Script
- MCP
- Rails
- React
- Security
- Swing
- Type Script
- Web
- UX UI Design
- Node JS
- Office 365
- Fullstack
- More
We are Proofpoint, a global leader in human- and agent-centric cybersecurity, protecting how people, data, and AI agents connect across email, cloud, and collaboration tools.
Our mission is to safeguard the digital world and empower people to work securely and confidently.
We are hiring a Staff Full Stack Engineer for Satori, our enterprise AI agent platform, to help build Mission Control for our Fortune 500 customers.
This is a high-ownership, fast-paced, and highly collaborative role with significant transformational impact.
We offer competitive compensation, comprehensive benefits, career success on your terms, a flexible work environment, annual wellness and community outreach days, recognition for contributions, and global collaboration and networking opportunities.
The role is based in Belfast, Northern Ireland, and is full time.
- last updated 36 week of 2026
- #J-18808-Ljbffr
Staff Full-Stack Software Engineer employer: Proofpoint
At Proofpoint, we pride ourselves on being an exceptional employer that fosters a collaborative and innovative work culture. Our Benelux team is dedicated to employee growth, offering extensive training and development opportunities while working in a dynamic environment that values diversity and inclusion. With competitive benefits and a focus on meaningful work, joining us means becoming part of a mission-driven company committed to protecting organisations from advanced threats.
StudySmarter Expert Advice🤫
We think this is how you could land Staff Full-Stack Software Engineer
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Proofpoint or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Proofpoint.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Proofpoint.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Proofpoint that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Staff Full-Stack Software Engineer
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Proofpoint.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Proofpoint and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Proofpoint
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Proofpoint uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
