Rapid7 logo

Principal Software Engineer

Rapid7
Department:Software Development
Type:ON-SITE
Region:Belfast, Northern Ireland
Location:Belfast, Northern Ireland, United Kingdom
Experience:Mid-Senior level
Estimated Salary:£80,000 - £120,000
Skills:
REACTANGULARVUE.JSHTMLCSSJAVASCRIPTAWSAZUREGCPMICROSERVICESCLOUD ARCHITECTURE
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Job Description

Posted on: October 11, 2025

As a Principal UI Software Engineer, you’ll create, set and influence the technical direction of our software and architecture through direct hands-on development by designing effective, scalable architectures for their products/services’ teams areas of ownership. You are an innovative, self-motivated contributor who takes on research and proposes major new technologies within a product line. By fostering relationships with cross-functional partners, you will contribute to the development of technical strategy. You’ll help grow other software engineers through technical mentorship and guidance. About The Team Our Product and Engineering team works with our award-winning products to help us create a single experience to help customers assess risk, detect threats and automate their security programs at over 11,000 organizations. These teams use best-in-class technology, leading-edge research, and broad, strategic expertise to develop new products and features, and enhance existing features, in order to create value for customers across the world. The stakes for creating a safer digital world are greater than ever. At Rapid7 we believe it’s our responsibility to show up every day and give our best for our customers and the entire security community. Our global engineering teams are at the centre of this mission and are dedicated to building a complete suite of industry-leading products which provide a cohesive platform for our customers. Our range of solutions spans vulnerability management, detection, automation, cloud security, and penetration testing; in order to build these products our teams work with an array of technologies including Java, Python, AWS and Go, just to name a few. Join our engineering team to help us build and innovate great products on our Insight platform using the latest technologies to make the world a safer digital space. About The Role As a Principal UI Software Engineer you will be a part of our Product and Engineering team who are at the forefront of keeping our customers safe from attacks and breaches. In this role you will be focussed on helping our customers seamlessly manage their security solutions as effectively and efficiently as possible, and ensuring our products are delivering a secure experience. You will be working on a high impact and cross-functional team, creating end-to-end security solutions that drive customer success.You will have the opportunity to further enhance your skills surrounded by a team of incredibly smart and experienced Engineers, whilst mentoring others. Specifically, your focus will be to:

  • Build, maintain, and release our well architected services by writing correct and clean code consistently and following best practices and conventions. You will recognize and make technical trade-offs with respect to your team’s product/components within the whole Rapid7 platform
  • Be involved in the creation, design and planning of upcoming features, our engineers are first class stakeholders in all parts of the development process
  • When required, partner with internal teams such as UX and Product Management who work deeply with our product to ensure we are understanding our customers needs
  • Deeply understand our products and make high impact decisions to support our customers
  • Work with Practice specific technologies

The Skills And Qualities You’ll Bring Include

  • A minimum of 12 years experience in software development using modern frameworks like React, Angular or Vue.js.
  • Strong understanding of HTML, CSS and JavaScript
  • Cloud Based Architecture Experience. Experience with cloud-based architectures, microservices design, and potentially specific cloud platforms (AWS, Azure, GCP).
  • Excited by technology, curious and eager to learn, with the ability to mentor more junior members of the team
  • The attitude and ability to thrive in a high-growth, evolving environment
  • Collaborative team player who has the ability to partner with others and drive toward solutions
  • Strong creative problem solving skills
  • Solid communicator with the ability to clearly convey objectives and rationale whilst fostering commitment from others both within the team and cross functionally
  • Brings a customer-first mindset to engineering, and integrates customer impact into everyday decision making
  • Excellent attention to detail
  • Demonstrable experience of delivering complex solutions to customers
  • Demonstrable experience of instigating continuous delivery and continuous integration patterns
  • Core Value Embodiment: Embody our core values to foster a culture of excellence that drives meaningful impact and collective success

We know that the best ideas and solutions come from multi-dimensional teams. That’s because these teams reflect a variety of backgrounds and professional experiences. If you are excited about this role and feel your experience can make an impact, please don’t be shy - apply today. About Rapid7 At Rapid7, our vision is to create a secure digital world for our customers, our industry, and our communities. We do this by harnessing our collective expertise and passion to challenge what’s possible and drive extraordinary impact. We’re building a dynamic and collaborative workplace where new ideas are welcome. Protecting 11,000+ customers against bad actors and threats means we’re continuing to push the envelope - just like we’ve been doing for the past 20 years. If you’re ready to solve some of the toughest challenges in cybersecurity, we’re ready to help you take command of your career. Join us.

Originally posted on LinkedIn

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