Back-End Developer (Magento)

ADLIB; Greater London; Remote; GBP 55,000 - 70,000; Full time

Benefits offered by this job

Flexible hours

Remote-first UK

26 days holiday + bank holidays

£75 monthly Heka allowance

Quarterly bonus scheme

3% employer pension

Job summary

ADLIB is hiring a Senior Backend Developer for a UK-based ecommerce specialist. You will own technical work across live Magento 2 and Adobe Commerce platforms, solving complex problems and delivering improvements that make a genuine difference.

You will work across a portfolio of established ecommerce platforms, focusing on development, upgrades and integrations with ERP, CRM and PIM systems, while maintaining high standards of code quality and security.

Qualifications

• Commercial Magento 2 backend development experience on production ecommerce platforms.
• In-depth knowledge of Magento 2 architecture, including custom modules, DI, plugins and observers.
• Recent experience within a digital agency, software house or fast-paced multi-client environment.
• Experience with REST or GraphQL APIs, service contracts and third-party integrations.
• Hands-on checkout and payment experience, including PSP integrations and custom checkout functionality.
• Strong PHP and MySQL skills, with experience across Magento Open Source and Adobe Commerce.
• Knowledge of Composer, Redis, caching, message queues and Magento performance optimisation.
• Experience with Git, CI/CD pipelines, automated testing and production deployments.
• Ability to explain technical decisions clearly to technical and non-technical stakeholders.
• Exposure to ERP, PIM, CRM, ecommerce security, Playwright or Cypress would be beneficial.

Responsibilities

• Own technical work across live Magento 2 and Adobe Commerce platforms, delivering improvements.
• Investigate requirements and issues, identify root causes and implement practical, maintainable solutions.
• Build and extend Magento functionality including custom modules, APIs and integrations with ERP/CRM/PIM.
• Manage deployments, Magento upgrades, migrations and performance optimisation.
• Take ownership of complex production issues across development, staging and production environments.
• Collaborate with Project Managers, Product Owners, QA and client stakeholders on planning and quality standards.

Skills

Magento 2 backend

Magento architecture

REST/GraphQL APIs

PHP

MySQL

Git

CI/CD pipelines

Testing automation

Technical communication

Tools

Composer

Redis

Caching strategies

Message queues

ERP integrations

PIM integrations

CRM integrations

Job description

• Take real technical ownership of live ecommerce platforms, shaping solutions from discovery through to delivery.
• Work on complex, high-traffic Magento 2 and Adobe Commerce platforms for established brands.
• Tackle varied backend challenges across integrations, payments, performance, scalability and platform upgrades.

We're recruiting a Senior Backend Developer for a UK-based ecommerce specialist. You'll own technical work across live Magento 2 and Adobe Commerce platforms, solving complex problems and delivering improvements that make a genuine difference.

What experience you'll need to apply

• Commercial Magento 2 backend development experience on production ecommerce platforms.
• In-depth knowledge of Magento 2 architecture, including custom modules, Dependency Injection, plugins and observers.
• Recent experience within a digital agency, software house or fast-paced multi-client environment.
• Experience with REST or GraphQL APIs, service contracts and third-party integrations.
• Hands-on checkout and payment experience, including PSP integrations and custom checkout functionality.
• Strong PHP and MySQL skills, with experience across Magento Open Source and Adobe Commerce.
• Knowledge of Composer, Redis, caching, message queues and Magento performance optimisation.
• Experience with Git, CI/CD pipelines, automated testing and production deployments.
• Ability to explain technical decisions clearly to technical and non-technical stakeholders.
• Exposure to ERP, PIM, CRM, ecommerce security, Playwright or Cypress would be beneficial.

What you'll be doing

You’ll work across a portfolio of established ecommerce platforms, covering ongoing development, support, upgrades, integrations and platform improvements. A core part of the role will include investigating requirements and technical issues, identify root causes and turn them into practical, maintainable solutions.

You’ll build and extend Magento 2 and Adobe Commerce functionality, including custom modules, APIs, checkout functionality and integrations with ERP, CRM and PIM platforms, payment providers, shipping services and marketing tools. You’ll also work on deployments, Magento upgrades, migrations and performance optimisation. A key part of the role is taking ownership of complex production issues. You’ll troubleshoot across development, staging and production environments, carry out root cause analysis and identify ways to improve performance, reduce technical debt and prevent recurring problems.

You’ll work closely with Project Managers, Product Owners, QA specialists, Solution Specialists and client stakeholders. You’ll contribute to technical discovery, estimates and solution planning, while helping maintain high standards around code quality, testing, security and maintainability.

What you’ll get in return for your experience

This is a remote‑first UK position offering flexibility over where you work, alongside flexible hours outside core hours of 10am-4pm. There's a competitive salary (£55K-70K) and benefits include 26 days' holiday plus bank holidays, a £75 monthly Heka benefits allowance, a company-wide quarterly bonus scheme, a 3% employer pension contribution and an enhanced maternity package. You’ll also have the opportunity to broaden your technical knowledge while working with complex, high‑traffic ecommerce platforms.