Senior Backend Developer (PHP / AI)

Senior Backend Developer (PHP / AI)

Multis UK Limited is looking for an experienced Senior Backend Developer for the development and improvement of production systems, APIs and online marketplace platforms. AI-assisted development is part of our everyday workflow.

Form of employment: part-time, full-time, contract

Location: Remotely

Job responsibilities

• Design and development of backend applications and REST APIs

• Development in PHP 8+ with SQL databases

• Architecture and improvement of existing production systems

• Search, automation and third-party service integrations

• Code review, debugging and automated testing

• Use of AI coding tools and AI agents for development, research, testing and code review

• Integration of AI APIs and agents into applications where appropriate

• Technical guidance for junior developers

Requirements

• Strong commercial backend development experience

• Very good PHP and SQL knowledge

• Experience designing and maintaining REST APIs

• Git and modern development workflows

• Linux and Docker experience

• Ability to understand and improve existing codebases

• Ability to work independently and make sound technical decisions

• Comfortable using modern AI coding tools and AI agents as part of development

Advantage

• MySQL and PostgreSQL

• Elasticsearch and search technologies

• Microsoft Azure or other cloud platforms

• JavaScript or TypeScript

• Automated functional and API testing

• Microservices and asynchronous processing

• Experience integrating LLM/AI APIs, agents or AI-assisted content processing

We offer

• Work on real international production systems and online marketplaces

• Modern development workflow including AI-assisted engineering

• Flexible remote cooperation

• High level of technical independence

• Opportunity to influence architecture and technical direction

Contact for this job position:

Multis UK Limited
info@multisltd.co.uk