Senior Contract TypeScript Engineer — SaaS Backend & APIs

rmg digital; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Job summary

RMG is seeking a Senior Contract TypeScript Engineer in London to drive core platform features and backend services. You will architect scalable solutions and ship mission-critical components within a hybrid, full-time role.

Join a high-caliber engineering team focused on delivering robust, multi-tenant SaaS systems. You will collaborate across disciplines, implement automated testing, and contribute to CI/CD pipelines from day one.

Qualifications

• Commercial TypeScript/Javascript expertise in a server-side environment.
• Proven track record delivering scalable backend services with Node.js.
• Experience building B2B SaaS platforms with high-availability requirements.
• Strong API design, microservices, and system-architecture capabilities.
• Practical knowledge of automated testing (Jest), CI/CD, and Agile workflows.

Responsibilities

• Design, develop, and maintain features using TypeScript across a multi-tenant SaaS platform.
• Build, integrate, and enhance backend services, microservices, and RESTful/GraphQL APIs.
• Translate product specs into secure, scalable architectures with cross-functional teams.

Skills

TypeScript

JavaScript (ES6+)

Node.js

API design

Microservices

Testing (Jest)

CI/CD

Agile / Git

Backend development

Tools

NestJS

React

Next.js

AWS

Azure

GraphQL

SQL

NoSQL

Job description

RMG is seeking a Senior Contract TypeScript Engineer in London to drive core platform features and backend services. You will architect scalable solutions and ship mission-critical components within a hybrid, full-time role.

Join a high-caliber engineering team focused on delivering robust, multi-tenant SaaS systems. You will collaborate across disciplines, implement automated testing, and contribute to CI/CD pipelines from day one.