Lead / Senior Full Stack Developer

Location: Leeds (Hybrid – typically 1–3 days per week onsite)

Rate: £550–£700 per day (Inside IR35)

Contract: 6 months initial

Role Overview

We are seeking an experienced Full Stack Developer to support the design, development, and delivery of large‑scale digital platforms. Working as part of a multidisciplinary product team, you will contribute to end‑to‑end software engineering—building reliable, scalable, and secure digital services that meet user needs and organisational objectives.

The role involves leading technical development activities across both frontend and backend components, shaping system integrations, developing high‑quality APIs, and contributing to cloud‑hosted platform architectures. You will work closely with designers, product leads, architects, and data specialists to refine requirements, develop prototypes, validate technical options, and deliver production‑ready features.

Strong engineering expertise, a collaborative mindset, and the ability to work independently while producing clean, well‑structured code and documentation are essential.

Key Responsibilities

• Develop high‑quality, maintainable, and scalable software across frontend and backend components.
• Translate user and business requirements into robust technical solutions.
• Design, build, and maintain RESTful APIs, ensuring performance, reliability, and security.
• Collaborate with UX designers to implement responsive, accessible, and user‑centred frontend features.
• Lead development activities, support code reviews, and uphold engineering best practices.
• Work with architects to align solutions with enterprise patterns, standards, and cloud strategies.
• Implement secure development practices and ensure solutions meet compliance and data‑protection requirements.
• Participate in technical planning, estimation, and risk assessment across the delivery lifecycle.
• Support continuous integration, automated testing, and deployment pipelines.
• Troubleshoot issues across the full stack and contribute to improving system observability and performance.
• Produce clear technical documentation, including architectural diagrams, data flows, and API specifications.

Skills & Experience

Essential

• Proven experience as a Lead Developer or Senior Software Engineer working on large‑scale digital platforms.
• Strong frontend expertise in React, Angular, or Vue.js.
• Backend engineering experience using Python (e.g., Flask, Django, FastAPI).
• Strong experience designing and consuming RESTful APIs.
• Hands‑on experience working with cloud platforms, such as AWS or Azure.
• Experience with SQL databases, data modelling, and supporting data pipelines.
• Strong understanding of modern software development practices, including CI/CD, automated testing, and version control (Git).
• Ability to communicate technical concepts clearly to a diverse range of stakeholders.
• Experience working within agile or multidisciplinary delivery teams.

Desirable

• Familiarity with microservices architectures and containerisation (Docker, Kubernetes).
• Experience with infrastructure‑as‑code tools (Terraform, CloudFormation, ARM/Bicep).
• Knowledge of modern authentication standards (OAuth, OpenID Connect).
• Understanding of performance optimisation, caching strategies, and scalable system design.
• Experience working in regulated or data‑sensitive environments.