Senior Next.js Developer

Scrumconnect Consulting; Swansea; On-site; GBP 65,000 - 90,000; Full time

Job summary

Scrumconnect Consulting is seeking a Senior Next.js Developer to join our government-facing teams. Lead frontend work using Next.js and React, ensuring accessibility, performance and alignment with government standards.

You will be part of a blended agile squad delivering high-quality digital services for UK government clients, mentoring colleagues and driving modern engineering practices.

Qualifications

• Deep commercial expertise building scalable web applications with Next.js and React.
• Strong practical knowledge of API-first design, RESTful microservices and cloud-native environments.
• Hands-on experience integrating front-end code into CI/CD pipelines and writing automated tests (Jest, Cypress, Playwright).

Responsibilities

• Design, build and support robust, user-centred web performant and maintainable code.
• API integration: connect front-end with Java Spring Boot microservices and AWS serverless components.
• Standards and accessibility: ensure services meet the GDS Service Standard and WCAG 2.2.
• Agile collaboration: work in blended, multi-supplier squads with Product Owners and Delivery Managers to define acceptance criteria.
• Quality and CI/CD: strengthen pipelines and embed automated testing for high-quality releases.
• Service assessments: contribute to production readiness and government service assessments.
• Mentorship and leadership: share knowledge and coach team members to raise capability.

Skills

Next.js

React.js

API-first design

Cloud-native

Automated testing

CI/CD

Jest

Cypress

Playwright

Tools

Jenkins

GitHub Actions

AWS

Job description

Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering

impactful and innovative technology solutions across UK government departments. Our work

has positively influenced the lives of over 40 million UK citizens.

We are passionate about user-centred design, agile delivery, and building digital services that

make a real difference. Our teams work at the forefront of innovation, helping organisations

transform and deliver high-quality, scalable solutions that truly matter.

Role Overview

We are seeking a talented and experienced Senior Next.js Developer at SFIA Level 4 to join our

multidisciplinary agile teams and help deliver world-class digital services for UK government

clients. You will lead the development of modern, accessible and performant front-end

applications using Next.js, in structured and governed environments where quality, accessibility

and user experience are paramount.

You will be a core member of a blended agile delivery squad of civil servants and supplier staff

These services support nearly 5 billion digital interactions and tens of millions of customer

transactions each year.

You will take ownership of designing, building and supporting accessible, responsive front-end

applications using Next.js and React, integrating them with a modern API-first ecosystem built

on Java Spring Boot and AWS serverless technologies. You will take on complex technical

challenges, champion modern engineering standards, and mentor colleagues to raise the

capability of the whole team.

Key Responsibilities

• Software development: Design, build and support robust, user-centred web performant and maintainable code.
• API integration: Integrate front-end interfaces with backend Java Spring Boot microservices and AWS serverless components such as Lambda and API Gateway.
• Standards and accessibility: Ensure services meet the GDS Service Standard, WCAG 2.2 accessibility guidelines and secure-by-design principles.
• Agile collaboration: Work within blended, multi-supplier agile squads alongside Product Owners, Agile Delivery Managers, Business Analysts and SDETs to define acceptance criteria and deliver value in iterative sprints.
• Quality and CI/CD: Strengthen CI/CD pipelines and embed automated testing practices (TDD/BDD) for high-quality releases and reliable services.
• Service assessments: Contribute to production readiness and formal government service assessments across discovery, alpha, private beta and live.
• Mentorship and leadership: Share knowledge, conduct code reviews and coach team members to build in-house capability and support long-term service ownership.

Essential Skills and Experience

• Core programming: Deep, commercial expertise building scalable web applications with Next.js, React.js and modern front-end tooling. services aligned to the GDS Service Standard in complex, high-volume government
• Accessibility first: Comprehensive understanding of inclusive design and strict adherence to WCAG 2.2.
• Modern architecture: Strong practical knowledge of API-first design, RESTful microservices and cloud-native environments.
• Quality and automation: Hands-on experience integrating front-end code into CI/CD pipelines (e.g. Jenkins, GitHub Actions) and writing automated tests (e.g. Jest, Cypress, Playwright).
• Agile mindset: A strong track record in blended, multidisciplinary agile environments, adapting smoothly to legislative or policy-driven change.
• Ruby on Rails experience, to help migrate, maintain or integrate with legacy front-end estates.
• Experience integrating with cross-government platforms such as GOV.UK One Login, GOV.UK Pay, GOV.UK Notify or digital wallets.
• Experience supporting large-scale transformation away from legacy systems (e.g. older Java, AIX, Oracle or mainframe).
• Familiarity with AWS serverless patterns, infrastructure as code and proactive observability monitoring.

Diversity and Inclusion

At Scrumconnect Consulting, we believe that diversity drives innovation and better outcomes.

We are committed to fostering an inclusive environment where every individual is valued,

respected and supported.

We welcome applications from candidates of all backgrounds and actively encourage

individuals from underrepresented groups, including women, people with disabilities and diverse

communities, as well as those seeking flexible working arrangements.

As a Disability Confident Level 1 employer, we are committed to providing reasonable

adjustments throughout the recruitment process and during employment to ensure equal