Back End Developer

Icopify; Liverpool; On-site; GBP 45,000 - 55,000; Full time

Job summary

A digital services freelancing platform based in Liverpool is seeking an experienced Back-End Developer. The ideal candidate will possess strong Laravel and PHP skills, alongside expertise in SQL and Redis. You will design and build high-performance backend systems to support a scalable marketplace platform. The role includes writing tests, developing secure payment integrations, and collaborating with front-end developers. Competitive benefits include a pension plan and sick pay.

Benefits

Company pension

Sick pay

Qualifications

• 3+ years of production experience with Laravel (v10–12).
• Strong knowledge of OOP principles in PHP 8.2+.
• Experience with e-commerce or marketplace platforms.

Responsibilities

• Design and implement scalable backend architecture.
• Develop secure payment integrations using Stripe/PayPal.
• Write and maintain feature and unit tests.

Skills

Laravel

PHP

SQL

RESTful API design

Git

Tools

Redis

PHPUnit

Composer

Job description

Overview

Osdire is a next-generation digital services freelancing marketplace currently under active development. The platform is being built to be scalable, secure, and user-centric, supporting high traffic volumes, complex workflows, and long-term growth.

Eligibility Criteria

• Applicants must have the legal right to work in the UK
• A valid UK residency status is required
• Visa sponsorship is not available

Role Overview

We are seeking an experienced Back-End Developer with strong Laravel and PHP expertise to play a key role in the development and scaling of our marketplace platform.

You will be responsible for designing and building robust, secure, and high-performance backend systems that support core marketplace functionality and evolving business requirements.

• Design and implement scalable, maintainable backend architecture
• Apply SOLID principles, clean code practices, and clear separation of concerns
• Develop modular components using service-layer and repository patterns

Core Platform Features

• User authentication and role-based authorisation (Sanctum/Passport)
• Service listings (creation, editing, search, filtering)
• Order lifecycle and transaction management
• Secure payment integrations (Stripe, PayPal)
• Internal messaging, reviews, and dispute resolution
• RESTful API development with versioning support

Database & Performance

• Design and maintain efficient, well-structured database schemas
• Optimise SQL queries, indexing, and prevent N+1 issues
• Implement Redis for caching, sessions, and queue systems
• Monitor performance and address scalability concerns

Integrations & Collaboration

• Integrate third-party services such as payment providers and notifications
• Work closely with frontend developers (e.g. Vue.js) to ensure seamless API integration

Testing & Maintenance

• Write and maintain feature and unit tests (PHPUnit/Pest)
• Troubleshoot and resolve issues across development and production environments
• Support system stability and continuous improvement

Technical Requirements

• PHP 8.2+ with strong OOP principles
• Laravel (v10–12) with 3+ years’ production experience
• Advanced SQL (MySQL/PostgreSQL), query optimisation, indexing
• Redis for caching, sessions, and queues
• Service-layer and repository patterns
• RESTful API design and authentication
• Event-driven architecture (Laravel Events & Listeners)
• Git, Composer, PHPUnit/Pest
• Code quality tools (PHP Insights, Pint/CS Fixer)

Performance & Testing

• Query optimisation and N+1 prevention
• Queue and memory optimisation
• TDD mindset and integration testing
• Understanding of code coverage

Required

• E-commerce or marketplace platforms (2+ years)
• Multi-user role systems and permissions (Spatie or similar)
• Payment gateway integrations (Stripe, Braintree, PayPal)
• Order/transaction processing workflows
• File upload (S3)

Job Types: Full-time, Permanent

• Company pension
• Sick pay

Location & Relocation

• Liverpool L3: reliably commute or plan to relocate before starting work (required)
• Do you agree to work on site?
• Do you require sponsorship in the future? Please provide visa expiration date if applicable