Senior Full Stack Engineer – Contractor

This is a fully remote position, open to applicants in United Kingdom.

📋 Description

• This pivotal position entails the construction, scaling, and enhancement of OnBuy’s core commerce platform across both front-end and back-end systems.

• As a Senior Full Stack Engineer, you will oversee engineering delivery from start to finish; covering everything from customer-facing experiences to foundational services and data systems.

• You will work within a cross-functional team and be responsible for delivering high-quality, scalable solutions that significantly impact GMV, seller performance, and customer satisfaction.

• Design, develop, and sustain comprehensive full-stack solutions encompassing UI, APIs, and backend systems.

• Convert product requirements, designs, and wireframes into scalable, production-ready systems.

• Manage features throughout their lifecycle from concept to development, testing, release, and monitoring.

• Create responsive, high-performance user interfaces utilizing modern JavaScript frameworks.

• Transform UI/UX designs into clean, maintainable code.

• Enhance applications for speed, scalability, and user-friendliness.

• Design and implement scalable services and APIs.

• Work with both monolithic and microservices architecture (Laravel/PHP services).

• Maintain and upgrade legacy systems while constructing modern, scalable architecture.

⛳️ Requirements

• Extensive full stack engineering experience with a focus on end-to-end delivery.

• Demonstrated backend proficiency in PHP (Laravel).

• Strong skills in JavaScript (ES6+) with contemporary frameworks (React/Vue/Angular).

• Experience in designing and building RESTful APIs and scalable systems.

• Familiarity with MySQL and NoSQL databases (e.g., Couchbase, MongoDB).

• In-depth understanding of system architecture and microservices.

• Experience with event-driven systems (e.g., RabbitMQ, Pub/Sub) and cloud platforms (GCP).

• Knowledge of Docker and CI/CD pipelines.

• Strong engineering principles: testing, code quality, and production ownership.

• Experience in eCommerce or marketplace platforms (Desirable).

• Cloud experience (GCP) (Desirable).

• Familiarity with NoSQL (e.g., Couchbase) and Search platforms (e.g., Constructor & Solr) (Desirable).

• Experience working within a microservices architecture (Desirable).

🏝️ Benefits

• This position is a remote role based in the UK, and candidates must possess full right to work in the UK.

• Our Commitment

• OnBuy is an equal opportunity employer. We are committed to fostering a fair and transparent workforce, beginning with a recruitment process that does not discriminate based on gender, sexual orientation, marital or civil partnership status, pregnancy or maternity, gender reassignment, race, color, nationality, ethnic or national origin, religion or belief, disability, or age.

• Just a note — we do not communicate with candidates via WhatsApp or any messaging apps. If you receive such communication, it is not from us, and we encourage you to inform the recruitment team.