Senior Software Engineer - React

Senior Software Engineer - React

Full-Time 63000 - 77000 £ / year (est.) Home office (partial)
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At a Glance

  • Tasks: Develop innovative applications using React and Next.js for data visualisation.
  • Company: Join Xantura, a mission-driven tech company tackling society's big challenges.
  • Benefits: Enjoy competitive salary, flexible hours, remote work, and generous leave.
  • Other info: Hybrid role with excellent training and career growth opportunities.
  • Why this job: Make a real impact by enhancing user experience in advanced analytics.
  • Qualifications: 5+ years in frontend development with strong React and Next.js skills.

The predicted salary is between 63000 - 77000 £ per year.

Senior Software Engineer - React

Department

Platform Delivery

Employment Type

Permanent - Full Time

Location

  • London
  • Description

As a Senior Software Engineer – React at Xantura, you will play a critical role in developing our self-service analytics and data visualisation capabilities, significantly enhancing user experience across our advanced analytics platform, One View.

You’ll help build innovative, scalable applications using React and Next. js, integrating seamlessly with One View via REST APIs.

You will be responsible for designing performant, server-rendered and statically optimised applications using Next. js, ensuring fast load times and scalable frontend architecture suitable for Azure-hosted, multi-tenant cloud environments.

This role requires you to be a proactive self-starter who takes ownership of delivery, quality, and outcomes, operating within a structured engineering environment that values consistency, transparency, and continuous improvement.

You will collaborate closely with our Product, Platform, Data Science, and Business Consulting teams to build intuitive, impactful user interfaces that empower public sector clients to harness data-driven insights effectively.

Key Responsibilities

  • Frontend Development & Technical Delivery
  • 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 One View’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
  • Collaboration & Agile Delivery
  • Work within an Azure Dev Ops-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
  • Quality Assurance & Maintenance
  • Follow and promote strong engineering discipline, including clear acceptance criteria and peer review
  • Contribute to and maintain CI/CD pipelines using Azure Dev Ops
  • 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

Skills, Knowledge & Expertise

We’d love to hear from you if you have

  • 5+ years of experience building frontend applications
  • Strong proficiency in React and Next. js
  • Understanding of SSR, SSG, and modern rendering strategies
  • Strong Java Script/Type Script, HTML, and CSS skills
  • Experience with Azure cloud environments
  • Experience with Azure Dev Ops
  • Experience with scalable Saa S 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

Bonus points if you have

  • Experience with Azure App Services or Static Web Apps
  • Familiarity with Azure AD / Entra ID
  • Experience with advanced Next. js features
  • Backend knowledge (Node. js, Python, SQL Server)
  • Public sector experience
  • Accessibility (WCAG 2.1)
  • Location –

This is a hybrid role based in our office in London (Borough). You would be expected to be able to work from the office at least 1-2 days per week.

  • Job Benefits
  • 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
  • #J-18808-Ljbffr

Senior Software Engineer - React employer: Xantura

Xantura is an exceptional employer, offering a dynamic work environment in London where innovation meets public sector impact. As a Director of Platform, you will not only lead the strategic evolution of the OneView platform but also enjoy a flexible work culture that prioritises employee well-being and professional growth. With competitive salaries, comprehensive benefits, and a mission-driven focus on solving societal challenges, Xantura provides a rewarding opportunity for those looking to make a meaningful difference.

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Contact Details:

Xantura Recruitment Team

We think you need these skills to ace Senior Software Engineer - React

React
Next.js
JavaScript
TypeScript
HTML
CSS
Azure Cloud Environments