Senior Full Stack Engineer (React, Angular, Next.js, TypeScript, GraphQL)

About the role

AI Job Summary * Proven experience operating at a Senior Engineer level within modern, high\-performing engineering teams. * Production\-grade full\-stack experience using TypeScript, React, Next.js, and Node.js. * Design around legacy systems and execute complex, secure API integrations; build robust GraphQL APIs.

Sign up or log in to analyse my fit

### **Role Type**

Contract • Full\-time • Senior ### **Description**

Our ‘black belt’ specialists are leaders in their domains: digital champions, delivery\-focused experts, top\-tier security professionals, AI thought leaders, and engineering best practice advocates.

With a global footprint and deep local insight, Software at Scale delivers cutting\-edge technology solutions that power mission\-critical platforms. We solve complex engineering challenges at scale, driving quality, performance, and resilience through the strength of our people.

### **Empower Your Career**

We’re seeking a **Senior Full Stack Engineer** to play a key role in delivering high\-quality, scalable systems across our most important programmes. This mandate focuses on building an ultra\-fast, highly performant modern web application using **Next.js, React, TypeScript, and GraphQL** within a highly secure environment.

This role is hands\-on and delivery\-oriented, requiring true end\-to\-end ownership. You will have the scope to heavily influence both frontend and backend architecture, establish performance baselines, and lead by example within our engineering teams. We are looking for a highly proactive engineer who thrives when navigating legacy constraints and who takes the initiative to find solutions rather than waiting to be given the answer.

### **Key Responsibilities**

* **End\-to\-End Architecture:** Design and build production\-grade, highly performant systems across the entire stack using **TypeScript, React, Next.js, and Node.js**. * **Proactive Problem Solving:** Take absolute ownership of technical challenges. Autonomously investigate issues, propose robust solutions, and drive them to completion without waiting for detailed, top\-down instructions. * **Complex Integrations \& Legacy Constraints:** Architect resilient software solutions that successfully navigate strict enterprise constraints, including seamless integration with legacy systems and complex, disparate third\-party APIs. * **GraphQL Mastery:** Architect and implement robust **GraphQL** APIs on the backend (resolvers, schemas, query optimisation) and seamlessly consume them on the frontend with modern caching strategies. * **High\-Performance Frontend:** Ensure optimal Core Web Vitals and lightning\-fast render times by leveraging advanced Next.js features (SSR, SSG, client\-side routing). * **Secure Development:** Architect full\-stack solutions that adhere to the strictest security standards, working safely within a highly secure enterprise environment to protect sensitive data and prevent vulnerabilities at every layer. * **Ecosystem Management:** Build and maintain systems within complex monorepo architectures, ensuring clean separation of concerns and shared tooling. * **DevOps \& Testing:** Develop and maintain CI/CD pipelines using GitHub Actions or TeamCity. Implement robust full\-stack test automation practices, including containerised workflows using Docker. * **Cloud\-Native Deployment:** Leverage AWS\-native services to deploy reliable, scalable applications. * **AI Tooling Adoption:** Champion the adoption of GenAI and agentic tools where they tangibly improve engineering productivity, code quality, or system capability.

### **What You Bring**

* **Senior\-Level Expertise:** Proven experience operating at a Senior Engineer level within modern, high\-performing engineering teams. * **Self\-Starter Mindset:** A highly proactive approach to engineering. You are known for hunting down answers, researching architectural trade\-offs independently, and bringing fully formed solutions to the table. * **Constraint\-Driven Design:** Demonstrated ability to design modern software around legacy systems and execute highly complex API integrations securely and reliably. * **Full\-Stack TypeScript Mastery:** Deep, hands\-on expertise writing production\-grade **TypeScript** on both the client and the server. * **Frontend Excellence:** Mandatory, proven experience building complex, high\-performance applications using **React and Next.js**. * **Backend \& API Design:** Extensive commercial experience building scalable backend services in **Node.js** and designing/implementing **GraphQL** APIs from scratch. * **Security \& Performance:** A strong track record of building performant applications (optimising bundle sizes, rendering strategies, database queries) specifically within highly regulated or secure environments. * **Infrastructure \& CI/CD:** Experience deploying and operating workloads on AWS, managing CI/CD pipelines, and working with Docker. * **AI Fluency:** Exposure to GenAI and agentic engineering tools, with a practical, delivery\-focused mindset on how to use them safely.

### **What We Offer**

* Meaningful, hands\-on engineering work across complex, enterprise\-grade platforms. * Clear growth pathways from Senior to Staff and beyond. * A low\-ceremony, delivery\-focused environment that values engineers who proactively own outcomes. * Competitive remuneration and benefits. * The opportunity to work alongside highly experienced engineers on challenging, high\-impact systems.