Back End Developer

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: Core 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 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 (3+ 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 Ability to commute/relocate: 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 #J-18808-Ljbffr