Overview

IriusRisk Belfast, Northern Ireland, United Kingdom

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About Us IriusRisk is the world’s leading automated threat modeling tool. Born out of a desire to advance threat modeling as an activity and ensure that software is secure from the design stage. IriusRisk helps the largest banks and technology providers build their software. We are a scale-up with large enterprise clients that retains a fast-paced, agile, get-things-done, start-up mentality. A place where everyone’s ideas are welcomed, valued, and challenged, meaning the entire team has the opportunity to change how software is built securely at the very largest scale.

Purpose of the Role

We’re building a product that solves real problems at scale — and we need talented engineers who thrive on challenge and speed. As part of one of our product teams, you’ll play a key role in shaping and evolving our platform, delivering features that users love while driving technical excellence.

This is a hands-on role where versatility is essential. You’ll move fluidly between backend and frontend work, ensuring seamless experiences from database to interface. Beyond shipping features, you’ll spot opportunities for improvement across the stack — streamlining processes, improving performance, and helping us move faster without compromising on quality.

Your mission: deliver robust, user-friendly solutions at pace. By balancing craftsmanship with fast iteration, you’ll directly impact user satisfaction, engagement, and the long-term success of the product.

Duties & Responsibilities

• Implementing and improving existing responsive UI interfaces using HTML, CSS, JavaScript and React.
• Designing, creating, and implementing Java-based applications.
• Actively collaborating with the team to achieve high quality solutions in a timely manner, helping the team improve as well.
• Collaborate with UI/UX designers and back-end developers to implement intuitive and visually appealing user interfaces.

What We Offer

• 100% Remote Work – enjoy true flexibility from anywhere.
• Cutting-Edge Product – contribute to a top-tier solution in a dynamic, challenging environment.
• Expert Team – work alongside highly skilled professionals with world-class recognition in the Threat Modeling sector.
• AI-Powered Innovation – leverage the latest technologies and forward-thinking approaches.
• Career Growth – real opportunities to develop and advance your skills and experience.
• Continuous Learning – access to training and certifications tailored to your role.
• Flat Organizational Culture – open, transparent, and empowering.
• Great Work Environment – collaborative, supportive, and people-first.
• Proven Retention – over 92% employee retention rate.

Requirements

As a Senior Full Stack Engineer, you'll be pivotal in shaping and driving the development of both front-end and back-end components. Your role will primarily focus on creating robust, responsive user interfaces with React and developing server-side logic with Java. You'll play a key role in the full development cycle, from conception to deployment, ensuring the delivery of high-quality, user-centric products.

Essential Skills And Experience

• Full Stack Expertise: Proficient in both front-end and back-end development. Substantial experience with React for front-end development and Java for back-end development.
• Front-End Development: Deep understanding of React, capable of building highly interactive and responsive web interfaces. Familiarity with modern HTML, CSS, and JavaScript (including ES6+).
• Problem-Solving Skills: Ability to troubleshoot and resolve technical problems, optimize performance, and handle scalability issues.
• Minimum 4 years of experience as a Software Engineer, with at least 2 years in either of the stacks.

Desire Experience

• Bachelor's or master's degree in computer science, software engineering, or a related field.
• Experience with Threat Modeling and/or Cyber Security.

Seniority level

• Not Applicable

Employment type

• Full-time

Job function

• Engineering and Information Technology

Industries

• Technology, Information and Internet

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Belfast, Northern Ireland, United Kingdom