Full Stack Engineer

Vertex Inc.; Camden Town; Remote; GBP 45,000 - 65,000; Full time

Job summary

A software studio in Camden Town is seeking a full-time developer to build and maintain scalable web applications. The ideal candidate will have strong JavaScript and TypeScript skills, along with AWS experience. This role offers the chance to take ownership of projects and influence the direction of the team, working closely with a hands-on CTO.

Qualifications

• 2+ years' commercial web development experience.
• Solid understanding of JWT authentication and API security.
• Proven ability to work independently and as part of a team.

Responsibilities

• Build and maintain full-stack web apps using Node.js, React, and Next.js.
• Design and deliver scalable architectures in a serverless AWS environment.
• Prototype, iterate, and deliver high-quality, user-friendly software.

Skills

JavaScript

TypeScript

Node.js

React

API Security

Education

Degree in Computer Science or other STEM subject

Tools

Stripe

AWS Serverless

Job description

Responsibilities

• Build and maintain full-stack web apps using Node.js, React, and Next.js
• Design and deliver scalable architectures in a serverless AWS environment
• Integrate Stripe (or similar) for payments and manage secure authentication (JWTs)
• Contribute to shared APIs and services powering multiple SaaS applications
• Prototype, iterate, and deliver high-quality, user-friendly software
• Occasionally support mobile builds (React Native or Flutter experience a plus)

Must have experience

• 2+ years' commercial web development experience
• Strong JavaScript / TypeScript skills across Node.js and React / React Native
• Hands-on experience with Stripe, MangoPay, or similar payment gateways
• Solid understanding of JWT authentication and API security
• Comfortable working with AWS Serverless or similar cloud environments
• Clear communicator with a product-focused mindset
• Proven ability to work independently remotely, as well as part of a wider, geographically dispersed team

Nice to have

• Experience with Flutter, AI/ML integrations, or low-code / developer productivity tools
• An eye for appealing designs
• Previous work in startup or SaaS product environments
• A degree in Computer Science or other STEM subject

Our client is a small but highly-capable software studio that helps founders turn strong ideas into scalable SaaS products. They partner with early-stage startups across industries - from advertising and media to legal - providing the technical expertise to build products that get to market quickly and perform reliably. Alongside their client work, they've developed internal platforms that streamline delivery - including tools with built-in CMS, CRM, payments, and AI components. These internal systems power their mission to reduce time to market for every new SaaS customer they partner with. The opportunity they're now looking to hire their first full-time developer, joining a close-knit (and to date, mainly part-time) team led by a technically hands-on CTO. It's a key role for someone who wants to take ownership, influence direction, and grow within a business that's growing steadily and sustainably.