Job Description

Senior Full-Stack Developer (Next.js +

Django)

Remote | Full-Time Contract | UK Time Overlap Required

Our client is a fast-growing, product-led technology business operating within a specialist

B2B marketplace. They have built a powerful custom e-commerce and fulfilment platform and

are now evolving it into a scalable SaaS product for wider industry adoption.

They are seeking a highly capable Senior Full-Stack Developer to play a key role in the

next stage of platform growth.

The Opportunity

This is a hands-on engineering position where you will directly influence product direction,

architecture, and technical strategy. You will work closely with senior leadership and have

significant input into roadmap decisions.

The platform is live, revenue-generating, and entering a critical scale-up phase. The next

iteration includes advanced automation, intelligent routing, and AI-powered capabilities

designed to improve efficiency, profitability, and user experience.

Key Responsibilities

● Lead hands-on development across frontend and backend

● Build, ship and deploy features that directly impact end users

● Own and evolve complex fulfilment and routing logic within the platform

● Contribute to the expansion of inventory/fleet management and CRM capabilities

● Design and implement event-driven architecture patterns to support scalability

● Explore, prototype and integrate AI-driven functionality (automation, predictive logic,

recommendations)

● Maintain and enhance third-party integrations (payments, verification, accounting,

address validation)

● Improve performance, reliability and system monitoring

● Support and mentor junior developers

● Produce clear technical documentation

● Contribute to architectural and product-level decision-making

Tech Stack (Strong experience required across the

stack)

Frontend:

● Next.js (App Router)

● TypeScript

Backend:

● Python 3.13+

● Django

● Django REST Framework

Database:

● PostgreSQL

Infrastructure:

● Google Cloud Platform (VMs, Cloud SQL, Load Balancing, Storage)

Environment & Tooling:

● NGINX

● Gunicorn

● PM2

● Sentry

● GitHub (advanced proficiency expected)

Requirements

● 5+ years commercial experience with Next.js, Django and PostgreSQL

● Strong hands-on experience with GCP infrastructure

● Proven experience building and maintaining production-grade systems

● Excellent communication skills and ability to work autonomously

● Comfortable contributing to architecture and technical strategy

● Genuine interest in applying AI capabilities in real-world SaaS products

● Experience building scalable platforms in ecommerce, marketplace, rental or

fulfilment environments is advantageous