Senior Back End Developer

3 Sixty Resourcing; Peterborough; Hybrid; GBP 63,000 - 75,000; Full time

Job summary

A tech recruitment firm is seeking a Senior Back End Developer in Peterborough. This role requires extensive experience in Laravel and PHP, focusing on developing a multi-tenant SaaS platform. You'll manage Shopify integrations, design complex databases, and work in a collaborative environment. Competitive salary and hybrid working conditions are offered, along with opportunities for career growth.

Benefits

25 days holiday plus bank holidays

Regular team and client meetings

Vibrant company culture

Huge progression opportunities

Qualifications

• 5+ years' back-end development experience, focusing on Laravel.
• Expert-level knowledge of PHP and Laravel.
• Proven experience with complex MySQL database design.

Responsibilities

• Develop and maintain a Laravel-based loyalty platform.
• Build and manage Shopify apps for seamless experiences.
• Design database schemas and optimize performance.

Skills

Laravel expertise

PHP programming

MySQL database design

Shopify API experience

AWS familiarity

Multi-tenant SaaS knowledge

API development

Payment gateway integration

Git workflows

Tools

Laravel Horizon

Docker

Job description

Overview

Senior Back End Developer (Laravel / Shopify)
Up to £75,000 P.A (DOE)

Full-time, permanent
Peterborough (Hybrid)

In a nutshell…
We have partnered with a fast-growing and innovative tech business in Peterborough who are looking for a Senior Back End Developer with extensive Laravel experience to join their talented team. This is a chance to work on a sophisticated multi-tenant SaaS platform that integrates with a wide range of third-party tools and e-commerce services.

Key Responsibilities

• Develop and maintain a Laravel-based loyalty and referral platform with multi-tenant architecture.
• Build and manage Shopify apps and integrations to deliver seamless storefront experiences.
• Design complex database schemas, optimise performance, and handle migrations.
• Implement and maintain integrations with third-party tools (Klaviyo, Recharge, Dotdigital, ReviewsIO, Zapier, Slack, etc.).
• Develop queue-based job processing systems for high-volume data and analytics.
• Create and maintain RESTful APIs and webhooks for third-party integrations.
• Collaborate with front-end developers using Livewire and Alpine.js.
• Ensure scalability, security, and performance across multi-tenant systems.
• Troubleshoot production issues in AWS cloud infrastructure.
• Participate in code reviews and mentor junior developers.

What You'll Need

• 5+ years' back-end development experience, with a strong focus on Laravel.
• Expert-level PHP and Laravel knowledge.
• Proven experience with complex MySQL database design and optimisation.
• Shopify API and app ecosystem experience.
• Familiarity with payment gateway integrations (Stripe, Recharge, etc.).
• AWS experience (SQS, S3, Lambda, EC2).
• Solid understanding of multi-tenant SaaS architecture.
• Experience with API development, webhooks, and third-party integrations.
• Knowledge of Laravel Livewire, modern PHP practices, and Git workflows.

Desirable Experience

• Experience with subscription billing platforms, marketing automation tools, and e-commerce analytics.
• Familiarity with customer support platforms (Gorgias, Zendesk, Intercom).
• Knowledge of containerisation (Docker), CI/CD pipelines, and real-time features.
• Contributions to open-source Laravel or Shopify projects.

Tech Stack

• Backend: Laravel, PHP, MySQL
• Frontend: Livewire, Alpine.js, Tailwind CSS
• Cloud: AWS (SQS, S3, Lambda, EC2)
• Integrations: Shopify API, Stripe, Recharge, Klaviyo, Gorgias
• Tools: Laravel Horizon, Telescope, Sanctum, Cashier
• Queue: Redis/SQS for background jobs

Benefits

• Monday to Friday, 9am - 5pm
• 25 days holiday plus bank holidays
• Hybrid working with regular team and client meetings
• Huge progression opportunities
• Vibrant company culture
• Regular company meet-ups and social events

Why Apply?

This is a rare opportunity to work on a technically challenging, high-impact platform that combines multi-tenant SaaS development with the dynamic Shopify ecosystem. You'll be part of a collaborative team, working on complex customer analytics, loyalty programs, and real-time features with huge progression opportunities.

Should this Senior Back-End Developer role be of interest, please apply or get in touch with one of our representatives for further information.