Contract Senior Software Engineer (React/Node)

YLD is a software engineering and design consultancy focused on creating digital capabilities and fostering a culture of learning.

YLD.io

Employee count: 51-200

United Kingdom only

YLD is seeking a Contract Senior Software Engineer to join a client team building innovative products. The role involves building scalable, resilient, and fault-tolerant architectures, strong problem-solving skills, and effective communication. This is a B2B contract position for a remote-first consultancy specialising in software engineering and related areas.

Requirements

Commercial experience with React and Node
In-depth knowledge of CSS (Tailwind, JavaScript, CSS Modules, etc)
Thoughtful about Component composition and state management
Knowledge of up-to-date transpiling, bundling, and packaging ecosystem (esbuild, vite, yarn, turborepo)
Experience with documentation generation tools
Strong experience with Continuous Integration and Delivery and Infrastructure as Code tools and techniques
Experience with Unit, Integration, End-to-End, and Visual Regression tests
Extensive experience working with Design Systems
Knowledge of Typescript
Self-motivated and proactive
Good communicator (written and verbal)
Detail-oriented
Team-oriented and collaborative
Analytical and problem-solving oriented
Believer in diversity and fairness

Benefits

Growing environment
Flexible working and work-life balance

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About the job

Apply before

Dec 16, 2025

Posted on

Oct 17, 2025

Job type

Contractor

Experience level

Senior

Location requirements

United Kingdom

Hiring timezones

United Kingdom +/- 0 hours

About YLD.io

Learn more about YLD.io and their company culture.

View company profile

Creating digital capabilities for you, that last beyond us. We are a software engineering and design consultancy that focuses on building capabilities in digital technologies. Our services cover various aspects, including software engineering, digital product design, and data science.

Our work encompasses multiple industry sectors where we help in developing end-to-end experiences with service integrations, scaling electric vehicle (EV) charging infrastructure for net-zero emissions, and building automatic energy trading capabilities. We are dedicated to accelerating scientific progress through innovation while enhancing growth with technologies powered by Python. Furthermore, we focus on building a multi-brand design system to ensure scalable efficiency and consistency across all projects. We are committed to fostering a progressive culture of learning within our teams, allowing our engineers to make substantial contributions to the open-source community.