Senior PHP & React Engineer - Remote, High Impact Platform

Harnham; Greater London; Remote; GBP 70,000 - 85,000; Full time

Benefits offered by this job

Fully remote

Job summary

Harnham is seeking a Senior Software Engineer to own the delivery of features and platform improvements across a PHP/Laravel backend and React/TypeScript frontend. You will drive high-quality code, oversee releases, and raise engineering standards while collaborating with product, data, and QA teams.

You will work across backend and frontend, focusing on performance, reliability, and reducing technical debt as the platform scales.

Qualifications

• Experience building software products using PHP and Laravel.
• Front-end development with React and TypeScript.
• Ability to own software delivery and release production-ready applications.
• Experience across backend and frontend development.
• Strong PostgreSQL relational design knowledge.
• Exposure to AWS-based environments and cloud-native development.
• Experience with CI/CD tooling, ideally GitHub Actions.
• Ability to work independently while collaborating with product and data stakeholders.
• Commitment to code quality, testing, maintainability, and CI/CD improvements.
• Interest in AI-assisted development tools and practices.

Responsibilities

• Owning large pieces of work from requirements through to production deployment.
• Building and enhancing products across a Laravel backend and React frontend.
• Writing clean, maintainable, and well-tested code.
• Managing releases and supporting deployment processes.
• Reviewing code and helping establish engineering best practices.
• Collaborating with Product, Data, and QA teams to scope and deliver solutions.
• Improving platform performance, reliability, and software quality.
• Reducing technical debt and contributing to architectural improvements.
• Supporting evolution of engineering processes, testing frameworks, and CI/CD practices.

Skills

PHP

Laravel

React

TypeScript

Delivery owner

Frontend/backend

PostgreSQL

AWS

GitHub Actions

Code quality

AI tools awareness

Tools

GitHub Actions

AWS

Job description

Harnham is seeking a Senior Software Engineer to own the delivery of features and platform improvements across a PHP/Laravel backend and React/TypeScript frontend. You will drive high-quality code, oversee releases, and raise engineering standards while collaborating with product, data, and QA teams.

You will work across backend and frontend, focusing on performance, reliability, and reducing technical debt as the platform scales.