Senior Full-Stack Developer; JavaScript​/Node.js

Position: Senior Full-Stack Developer (JavaScript / Node.js)
Senior Full-Stack Developer

My Client is a fast-growing technology company building high-performance, real-time digital products used at significant live and large-scale environments.

They are seeking a Senior Full-Stack Developer to play a key role in shaping and scaling their core platform.

This is a senior, hands-on position working closely with the CTO to architect, build and optimise systems that must perform reliably under substantial concurrent usage.

The Role

You will collaborate directly with the CTO (an experienced full-stack engineer) to design and deliver robust, scalable systems.

This role spans frontend, backend and infrastructure. It is ideal for someone who enjoys technical ownership, architectural input and solving complex engineering challenges.

Key Responsibilities

Design and implement scalable cloud-based architectures using Infrastructure as Code

Build and enhance high-performance, real-time web applications

Develop systems capable of handling high-throughput, concurrent usage

Improve performance, reliability and scalability across existing products

Build new web applications, services and supporting infrastructure

Implement comprehensive unit testing and conduct load/performance testing

Establish and maintain CI/CD pipelines

Improve developer experience and streamline onboarding processes

Contribute to technical strategy and architectural decisions

About You

You are:

5+ years’ experience in full-stack development

Strong in web fundamentals, networking concepts and security best practices

Comfortable moving between frontend, backend and infrastructure

Experienced designing and implementing AWS-based architectures using IaC

Confident building scalable, low-latency real-time systems (e.g. Web Sockets, event-driven systems)

A collaborative team player who values paired programming and knowledge sharing

An articulate communicator with strong analytical thinking

Calm and solutions-focused when working under pressure

Tech Stack

You don’t need experience in everything listed, but strong exposure to comparable technologies is expected.

Frontend:
React, JavaScript/Type Script, CSS

Backend:
Node.js, Redis, Dynamo

DB, MySQL

AWS services such as Cloud Front, ECS, Lambda, S3 and EC2

Tools & Practices:
Git, Infrastructure as Code, Vite, Webpack, Docker, CI/CD, Unit Testing

Bonus:
Terraform

Benefits:

Mac Book Pro and modern equipment

Remote-first (UK-based)

25 days holiday + bank holidays

Flexible working (core hours 9:00–5:30)

Supportive, high-trust culture

Interested? Please Click Apply Now!

Senior Full-Stack Developer