Senior UI Software Engineer - React.js

Job Description

Job Description

Salary:

About Index Engines

Index Engines is the world's leading AI-powered analytics platform for ransomware and data corruption

detection. Our flagship product, CyberSense, empowers organizations to detect threats quickly and recover

data effectively. Join us in building intuitive interfaces that give customers real-time insights into their data

security.

The Role

We're seeking a Senior UI Software Engineer - React.js to maintain and improve our web applications within

a continuous Kanban workflow. Your primary focus will be post-release sustainment: diagnosing and fixing UI

bugs, optimizing performance, and ensuring robustness. As the platform evolves, you'll also support feature

rollouts, collaborate on design enhancements, and contribute to the product's long-term stability.

Core Responsibilities

• Triage, prioritise, and resolve production UI defects surfaced on the Kanban board.
• Maintain and refactor existing React.js components for reliability and scalability.
• Optimise front-end performance and load times; implement best practices.
• Collaborate with product managers, UX designers, and backend engineers on quick turnarounds.
• Work within a continuous-flow Kanban process, responding to incoming issues and adjusting prioritiesin real-time.
• Write unit and integration tests using Jest and React Testing Library.
• Ensure seamless integration with RESTful APIs and support API changes.
• Document fixes and provide clear release notes for stakeholders.
• Mentor junior engineers in debugging and UI best practices.
  

Minimum Qualifications

• 5+ years of software engineering experience (3+ minimum acceptable), with significant front-end
• focus.
• Proficient in React.js, JavaScript/TypeScript, Python, HTML5, and CSS3.
• Strong understanding of UI performance optimisation and cross-browser compatibility.
• Experience with state management (Redux, Context API, or similar).
• Familiarity with Git and Jira Kanban boards; comfortable in continuous delivery environments.
• Skilled at diagnosing issues in production and shipping fixes rapidly.
• Excellent communication and teamwork in Kanban settings.
  

Preferred Experience

• Background in cybersecurity or fraud detection interfaces.
• Experience with cloud-hosted front-end deployments (AWS, Azure, GCP).
• Familiarity with CI/CD pipelines for front-end applications.
• Exposure to design systems (Material UI, Tailwind, or similar).
• C development experience in a Linux environment.

What We Value

• Agility and responsiveness to critical production issues.
• Meticulous attention to detail and a passion for user experience.
• Collaboration and clear communication under tight timelines.
• Humility and willingness to learn from incidents.
  

Why Join Us?

• Work on impactful interfaces for enterprise-grade cybersecurity tools.
• Join a supportive, cross-functional team focused on quality and reliability.
• Competitive compensation, benefits, and growth opportunities.