Senior PHP Developer

Marshall Resource Partners Ltd; Milton Keynes; On-site; GBP 72,000 - 88,000; Full time

Job summary

Marshall Resource Partners Ltd is seeking a skilled PHP Developer to join our team in the UK. You will design modular platforms, build modules atop Composer packages, and implement long-running business processes using a configurable workflow engine. The role involves both backend (PHP 8, Doctrine, PostgreSQL) and frontend work (JavaScript/React).

You will collaborate with a small team and mentor junior developers while delivering robust, scalable solutions for a fleet management domain.

Qualifications

• Experience with Doctrine ORM or another data-mapper ORM, including the ability to explain unit of work and when changes reach the database.
• Modern PHP 8, applying SOLID principles in applications composed from libraries rather than one large framework.
• PostgreSQL schema design, query optimization, and migrations.
• Routine automated testing with PHPUnit or equivalent, plus static analysis and CI coding standards.
• Git and pull-request review as part of regular work day.
• Docker for local development and deployment.
• Enough JavaScript and React experience to work confidently on front ends (about a fifth of work).
• Also valued: Symfony experience; workflow engines, state machines, or long-running case management; financial systems/ledgers; document processing/OCR; and experience in fleet, leasing, or regulated environments.

Responsibilities

• Design and build a modular platform as we move away from our legacy system.
• Build new modules on top of internal Composer packages and shared architecture.
• Design modules from high-level business requirements.
• Develop solutions for long-running business processes using our configurable workflow engine.
• Build systems for reconciling charges, payments, refunds, and fees using a double-entry ledger and an external finance system.
• Process incoming documents and files, including scanned paperwork and OCR, and match extracted information to customers, vehicles, and people.
• Integrate with systems of record through file-based exchanges and vendor APIs.
• Share ownership of the platform and its development across our small team.
• Help bring on and support a junior developer.

Skills

Doctrine ORM

PHP 8

SOLID design

PostgreSQL design

Unit testing

Git workflow

Docker

JavaScript

React

Symfony

Nginx

AWS

Composer

Hibernate

Tools

Doctrine

Hibernate

Git

GitHub

Docker

Playwright

PostgreSQL

PHP

Nginx

AWS

Composer

React

Symfony

Job description

Salary: £80,000 - 80,000 per year

Requirements:

• Experience with Doctrine ORM or another data-mapper ORM such as Hibernate or Entity Framework, including the ability to explain how the unit of work behaves and when changes reach the database
• Modern PHP 8, applying SOLID principles in applications composed from libraries rather than one large opinionated framework
• PostgreSQL schema design, query optimization, and migrations
• Routine automated testing with PHPUnit or an equivalent, alongside static analysis and coding standards enforced in CI
• Git and pull-request review as part of the regular working day
• Docker for local development and deployment
• Enough JavaScript and React experience to work confidently on front ends; around a fifth of the work involves front-end development
• Also valued: Symfony experience; workflow engines, state machines, or long-running case management systems; financial systems, ledgers, or reconciliation against an external system of record; document processing, OCR, or data extraction; and experience in fleet, leasing, or another regulated environment

Responsibilities:

• Design and build a modular platform as we move away from our legacy system
• Build new modules on top of our internal Composer packages and shared architecture
• Design modules from high-level business requirements
• Develop solutions for long-running business processes using our configurable workflow engine
• Build systems for reconciling charges, payments, refunds, and fees using a double-entry ledger and an external finance system
• Process incoming documents and files, including scanned paperwork and OCR, and match extracted information to customers, vehicles, and people
• Integrate with systems of record through file-based exchanges and vendor APIs
• Share ownership of the platform and its development across our small team
• Help bring on and support a junior developer

Technologies:

• AWS
• Composer
• Docker
• Doctrine
• Git
• GitHub
• Hibernate
• Support
• JavaScript
• Nginx
• PHP
• PHPUnit
• Playwright
• PostgreSQL
• Project Manager
• React
• Symfony
• Cloud
• Backend
• Frontend

More:

We are a fleet management company recently acquired by a blue-chip bank. We are moving away from a bespoke, forty-year-old system over the coming years, while the bank introduces a new leasing platform. Much of our business capability will not move to that platform, so we are building the modules needed to fill those gaps. We already run a growing estate of production services, each with its own React front end and a shared architecture. Our stack includes PHP 8.3, Slim 4, PHP-DI 7, Doctrine ORM 2 and DBAL 3, PostgreSQL 16, React 18, React Router 6, TanStack Query 5, PHPUnit, PHP_CodeSniffer, Phan, Playwright, Docker, nginx, PHP-FPM, AWS, and GitHub Actions. Our small team consists of two developers, two business analysts, and a project manager, combining the scope of a large programme with the autonomy and ownership of a small team.

last updated 40 week of 2026