The Senior Software Engineer will develop analytics applications using React and Next.js, ensure performance in Azure environments, and collaborate with cross-functional teams.
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, OneView. You’ll help build innovative, scalable applications using React and Next.js, integrating seamlessly with OneView 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 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
Collaboration & Agile Delivery
- 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
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 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
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 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
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
About
At Xantura, we’re on a mission to reduce societal inequality by helping local authorities use data more effectively. Our AI-driven platform empowers frontline workers with the insights they need to prevent complex issues like homelessness or children being taken into care — before they happen. We make this possible by connecting siloed datasets, applying advanced machine learning to enrich the data, and using predictive analytics to identify those most at risk. Our platform then distills this into clear, actionable insights that help frontline staff intervene early and make a real difference. It’s an exciting time to join Xantura. We’re scaling quickly, bringing on new clients, strengthening our platform, and expanding into new areas. While we’re a technology company at heart, our true focus is on improving lives — and we’re looking for people who share that vision.
Similar Jobs
Insurance • Business Intelligence • Consulting
The Senior Software Engineer will develop and maintain web applications with Next.js, React, and Laravel, enhancing features and performance on enterprise websites while collaborating with teams and ensuring best practices in code quality and security.
Top Skills:
BabelCSSCypressGitHTMLJavaScriptLaravelNext.JsNode.jsReactRobot FrameworkTailwind CssTypescriptWebpack
Artificial Intelligence • Healthtech • Information Technology • Other • Analytics
Collaborate with stakeholders to design, develop, and deploy cloud-hosted applications that enhance scientific research publication processes, while mentoring teammates and improving delivery practices.
Top Skills:
AWSConfluenceCoralogixDockerGitGithub ActionsIntellijJavaJavaScriptJenkinsJestJIRAKibanaKubernetesMockitoNewrelicOpensearchReactSpringSpring BootSQLTerraformTypescriptVscode
Digital Media • eCommerce • Gaming • Mobile • News + Entertainment
The Senior Recruiter will lead complex, multi-regional recruitment, design innovative sourcing strategies, and partner with hiring leaders to align on talent needs, focusing on diversity and regional labor laws.
Top Skills:
Greenhouse
What you need to know about the London Tech Scene
London isn't just a hub for established businesses; it's also a nursery for innovation. Boasting one of the most recognized fintech ecosystems in Europe, attracting billions in investments each year, London's success has made it a go-to destination for startups looking to make their mark. Top U.K. companies like Hoptin, Moneybox and Marshmallow have already made the city their base — yet fintech is just the beginning. From healthtech to renewable energy to cybersecurity and beyond, the city's startups are breaking new ground across a range of industries.
