Back End Developer in Warrington

Location: On-site (Merseyside)

Employment Type: Full-time, Permanent

About Osdire

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.

Key ResponsibilitiesSystem Architecture & Development

• 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 RequirementsCore Technologies

• 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

Architecture & Tooling

• 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

Benefits:

• Casual dress
• Company pension
• Sick pay

Ability to commute/relocate:

• Liverpool L3: reliably commute or plan to relocate before starting work (required)

Application question(s):

• Do you agree to work on site?
• Do you require sponsorship in the future? Please provide visa expiration date if applicable

Work Location: In person