Senior Software Engineer – React

Xantura Limited

Senior Software Engineer – React role at Xantura developing self-service analytics. Collaborating with teams to enhance user experience on advanced analytics platform OneView.

Posted 4/22/2026full-timeLondon • 🇬🇧 United KingdomSeniorWebsite

Tech Stack

Tools & technologies

AzureCloudCypressJavaScriptJestNext.jsReactTypeScript

About the role

Key responsibilities & impact

Design, develop, and deploy responsive, interactive applications using React and Next.js
Build server-side rendered (SSR), statically generated (SSG), and hybrid applications using Next.js
Integrate applications with OneView’s REST APIs and backend services
Ensure application performance, scalability, and maintainability in an Azure cloud environment
Optimise applications for speed, accessibility, and reliability in production
Work within an Azure DevOps-driven delivery model, including backlog management, sprint planning, and tracking
Collaborate with cross-functional teams in an agile framework
Contribute to sprint ceremonies and deliver against agreed priorities
Communicate effectively with stakeholders
Follow and promote strong engineering discipline, including clear acceptance criteria and peer review
Contribute to and maintain CI/CD pipelines using Azure DevOps
Ensure code quality through structured peer reviews and adherence to agreed standards
Write clean, well-structured, reusable code with appropriate documentation
Conduct thorough testing and debugging
Take ownership of delivery through to production
Identify and resolve performance bottlenecks

Requirements

What you’ll need

5+ years of experience building frontend applications
Strong proficiency in React and Next.js
Understanding of SSR, SSG, and modern rendering strategies
Strong JavaScript/TypeScript, HTML, and CSS skills
Experience with Azure cloud environments
Experience with Azure DevOps
Experience with scalable SaaS applications
Experience with REST APIs
Understanding of performance optimization
Experience working in agile teams
Testing experience (Jest, RTL, Cypress)
Understanding of CI/CD
Awareness of security best practices
Structured and disciplined approach to delivery

Benefits

Comp & perks

Competitive salary reviewed annually
Work for a passionate, mission-driven company solving society’s big problems
Work flexible hours around life commitments with a focus on delivering company value rather than hours worked
Ability to work remotely (excluding face-to-face Team Meetings and client meetings)
Training and development opportunities
25 days annual leave (plus bank holidays)
Company pension
Private medical insurance
Generous enhanced parental leave policies
Cycle to work scheme
Flu Vaccinations
Eye Test and contribution towards Glasses for VDU use
Employee Assistance Programme
Mental health and wellbeing support
Remote GP access
Counselling/therapy
Physiotherapy
Medical second opinions

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

ReactNext.jsJavaScriptTypeScriptHTMLCSSREST APIsperformance optimizationtestingCI/CD

Soft Skills

communicationcollaborationownershipdisciplineagile methodologyproblem-solvingpeer reviewbacklog managementsprint planningstakeholder engagement