Frontend Software Engineer (JavaScript / TypeScript & React)

CamWebDir; Cambridge; Hybrid; GBP 60,000 - 90,000; Full time

Benefits offered by this job

23 days holiday

Birthday day off

Private medical insurance

Life insurance 4x base salary

Salary sacrifice pension

Enhanced family leave

Employee Assistance Program

Cycle to work scheme

Job summary

Darktrace in Cambridge is seeking a Frontend Software Engineer to build dynamic UI with JavaScript/TypeScript and React, collaborating with backend engineers, UX designers and product managers. You will develop reusable components, ensure accessibility, and focus on performance and scalability across devices.

You should have experience with React ecosystems, Redux, TanStack Query, CSS, and Git; a portfolio or public repo is welcome.

Qualifications

• Experience with JavaScript or TypeScript.
• Strong CSS skills.
• Experience with React and production-grade UI.
• Familiarity with Redux and TanStack Query.
• Ability to translate designs from Figma.
• Understanding of web application security fundamentals.
• Portfolio or public GitHub with previous work.

Responsibilities

• Develop and implement reusable UI components using modern frameworks (React, Angular, or Vue).
• Ensure accessibility standards (WCAG) and inclusive UX.
• Optimize front-end performance for speed, scalability, and responsiveness.
• Collaborate with backend teams to integrate APIs and ensure data consistency.
• Participate in design discussions and provide technical input to improve usability.
• Maintain thorough documentation and contribute to UI development best practices.

Tools

Git

Figma

Job description

# Frontend Software Engineer (JavaScript / TypeScript & React)DDarktraceCambridgeFull timevia WorkdayPosted 23 Apr 2026Apply on darktrace.com →Darktrace is a global leader in AI for cybersecurity that keeps organizations ahead of the changing threat landscape every day. Founded in 2013, Darktrace provides the essential cybersecurity platform protecting nearly 10,000 organizations from unknown threats using its proprietary AI. The Darktrace Active AI Security PlatformTM delivers a proactive approach to cyber resilience to secure the business across the entire digital estate – from network to cloud to email. Breakthrough innovations from our R&D teams have resulted in over 200 patent applications filed. Darktrace’s platform and services are supported by over 2,400 employees around the world. To learn more, visit http://www.darktrace.com.Job Description:The Frontend Software Engineer will work both collaboratively and independently to deliver cutting edge cyber security solutions. You will be tasked with creating and maintaining dynamic user interfaces, enhancing user experience, improving technical feasibility and improving on specifics around speed and scalability.Please note this is hybrid position and will require a minimum of 2 days a week in the Cambridge office.What will I be doing:You will collaborate closely with cross-functional teams, including backend engineers, UX designers, and product managers, to ensure seamless integration of UI components with core systems. This role requires a strong understanding of modern JavaScript frameworks, responsive design principles, and accessibility standards. You will also be expected to contribute to code reviews, maintain high-quality documentation, and proactively identify opportunities to optimize performance and scalability across the platform. Key responsibilities include:• Develop and implement reusable UI components using modern frameworks (e.g., React, Angular, or Vue)• Ensure applications meet accessibility standards (WCAG) and deliver an inclusive user experience,• Optimize front-end performance for speed, scalability, and responsiveness across devices,• Collaborate with backend teams to integrate APIs and ensure data consistency,• Participate in design discussions and provide technical input to improve usability and functionality,• Maintain thorough documentation and contribute to best practices for UI development.What experience do I need:We welcome applications from engineers who have a solution-focused mindset combined with an analytical approach and problem-solving skills. During the interview process, you’ll be able to demonstrate your ability to program using React and will show an understanding of writing code in a production environment. Your application will additionally benefit from:• Experience with JavaScript or TypeScript,• Strong understanding of CSS,• Experience and knowledge of Redux and TanStack Query,• Demonstrable skill in translating designs accurately from Figma,• An awareness of good UX practices,• Knowledge of the fundamentals of web application security,• Proficiency with Git,• A strong foundational knowledge of programming methodologies and data structures, particularly when dealing with big datasets.• A portfolio and/or public GitHub repository showcasing your previous work. Benefits:• 23 days’ holiday + all public holidays, rising to 25 days after 2 years of service,• Additional day off for your birthday,• Private medical insurance which covers you, your cohabiting partner and children,• Life insurance of 4 times your base salary,• Salary sacrifice pension scheme,• Enhanced family leave,• Confidential Employee Assistance Program,• Cycle to work scheme.