Senior Javascript Developer

CompanyEeze

LocationHammersmith, England, United Kingdom

Posted At3/5/2026

UK Visa Sponsorship Analytics

Occupation Type

Programmers and software development professionals

Occupation Code Skill LevelHigher Skilled

Sponsorship Salary Threshold

£54,700 (£28.05 per hour)

Occupation rate applies

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Description

Key Responsibilities:

Design, develop, and maintain complex web applications using modern JavaScript framework such as TypeScript, REACT and Redux
Build responsive, scalable, and high-performance user interfaces that handle real-time data and low-latency interactions
Collaborate with backend developers to integrate APIs and WebSocket-based communication for real-time data updates
Work with cross-functional teams, including product owners, product analysts, UI/UX designers, and QAs, to deliver features that enhance user experience and meet business requirements
Optimise applications for maximum speed, scalability, and performance, ensuring the best possible user experience
Stay updated with the latest frontend technologies, tools, and industry trends, and apply them where appropriate
To mentor team members in junior level with delegated tasks. To review their codes and provide guidance when necessary.

Key Skills & Experience:

5+ years of experience in web application development
Proficient in TypeScript, React and Redux for building dynamic and complex user interfaces

Strong experience with real-time applications or low-latency systems, ideally within the iGaming or gaming industry

In-depth experience working with WebSockets and protobuf.

Understanding of frontend performance optimisation, especially in real-time data environments

Strong knowledge of HTML5, CSS3, Node.js, and JavaScript frameworks

Strong problem solving and analytical skills

Good communication skills with various stakeholders

Knowledge of using Gitlab / Github for version control would be an added advantage

What’s in it for you?

Experience a dynamic and team-orientated work environment.
Opportunities for personal growth and learning
An open, inclusive and supportive team where you will be valued, and your suggestions will be welcome.
26 days paid holiday per year. This is in addition to local public holidays.
Competitive salary
Hybrid Working
Risk Benefits such as pension, Life Assurance (4x annual salary), Private Medical Insurance
Team Building Opportunities
Flexible core hours between 10am – 4pm
Receive support whenever you need it with our Employee Assistance Program, available 24/7.
Local discounts and more…

Our team is committed to keeping remuneration and benefits under constant review to make sure what we offer stays relevant.