Senior PHP Developer

Introduction

At Gallagher Benefit Services, you’re a trusted partner to organizations navigating some of their most important people decisions. We help clients build better workplaces, where people feel supported, empowered, and inspired to thrive. Whether it’s shaping benefit strategies, designing wellbeing programs, or advising on workforce challenges, the work you do here creates meaningful change for businesses and the people who power them.

We’re a community of bold explorers, trusted experts, and compassionate partners; working side by side to solve problems, and shape the future of work. Here, curiosity is encouraged, collaboration is second nature, and your ideas have room to grow. If you’re looking for a place where your contribution matters and where you can help build a better world of work, think of Gallagher.

We’re looking for a Senior PHP Developer to join our team. You’ll work on a cutting-edge, data-driven platform that supports global digital solutions. This platform is built as a headless, RESTful PHP application and integrates with various frontend technologies. You’ll play a key role in maintaining, enhancing, and evolving this platform, ensuring it’s secure, efficient, and scalable. You’ll collaborate with a talented team, including the Principal Developer and Head of Technology, to shape the future of our backend systems.

This is a hands-on role where you’ll contribute to the development of modular microservices and cloud-native solutions.

Tech Stack: PHP 8, Symfony, Doctrine ORM, Docker, Kubernetes, RESTful APIs, MySQL, Google Cloud Platform. Environment is Hybrid where you will be expected to come into the office once a week (near commutes to our offices are London, Liphook, Wakefield, Leeds, Manchester or Bristol).

In this role, you’ll maintain and improve our PHP-based platform, focusing on stability, security, and performance. You’ll develop reusable and scalable backend services using PHP 8, Symfony, and Doctrine ORM. You’ll also help transition our platform to a microservices architecture, ensuring seamless integration with frontend applications via RESTful APIs. Your work will directly impact the scalability and efficiency of our systems, supporting a wide range of client solutions.

Additionally, you’ll collaborate on API design, support CI/CD workflows, and contribute to secure coding practices. You’ll also mentor junior developers and stay updated on the latest advancements in PHP and cloud-native design.

• You’re an experienced PHP developer with a strong background in Symfony and relational databases like MySQL. You’re familiar with containerised development using Docker and Kubernetes and have experience with microservices and event-driven systems.
• You understand secure development principles and modern workflows like Git and CI/CD pipelines. Experience with cloud platforms (Google Cloud, AWS, or Azure) is a plus.
• You’re a problem-solver with excellent debugging and optimisation skills. You’re also a team player who enjoys mentoring others and contributing to a collaborative environment.
• Eligibility:
  You must have the right to work in the UK.

On top of a competitive salary, great teams and exciting career opportunities, we also offer a wide range of benefits. Below are the minimum core benefits you’ll get, depending on your job level these benefits may improve:

• Minimum of 25 days holiday, plus bank holidays, and the option to ‘buy’ extra days
• Defined contribution pension scheme, which Gallagher will also contribute to
• Life insurance, which will pay 4x your basic annual salary, which you can top-up to 10x
• Income protection, we’ll cover up to 50% of your annual income, with options to top up
• Health cash plan or Private medical insurance

• Three fully paid volunteering days per year
• Employee Stock Purchase plan, offering company shares at a discount
• Share incentive plan, HMRC approved, tax effective, stock purchase plan
• Critical illness cover
• Discounted gym membership, with over 3,000 gyms nationally
• Season ticket loan
• Access to a discounted voucher portal to save money on your weekly shop or next big…