Senior frontend developer

Location: Greater London

# Senior frontend developer#####

Location:

** Hybrid - London or Newcastle, United Kingdom
** Salary:
** up to 80000 GBP gross per year** | :
** 38700
* * One of my client is looking for a Senior frontend developer role able to join their offices in London or Newcastle (UK).They build world class apps, middleware and digital products in the global lottery, betting, and gaming space.
** Important:
** The role is hybrid, 1 day per week at the office is mandatory.
*
* Main Responsibilities:

**- Design, build, and maintain high-quality applications across web, mobile, and backend environments depending on project needs.

- Take ownership of technical design and delivery for medium to high complexity features and systems.

- Translate complex requirements into scalable, maintainable solutions.

- Act as a subject matter expert in a primary discipline while contributing across other parts of the stack when needed.

- Collaborate closely with cross-functional teams including product, QA, and design.

- Drive improvements in engineering standards, tools, and processes.

- Identify and reduce technical debt while supporting system modernisation efforts.

- Ensure strong performance, scalability, security, and reliability across platforms.

- Lead or contribute to technical initiatives spanning multiple systems.

- Mentor team members and support knowledge sharing and hiring activities.

- Implement testing, monitoring, and observability best practices.

- Contribute to secure development practices and compliance requirements where applicable.
** Desired experience:**- Proven experience in a senior engineering role with ownership of complex systems.

- Strong expertise in front-end technologies (JavaScript/Type Script frameworks) or another core area such as React
- Ability to work beyond a single specialization (T-shaped skillset) — preferred but not strictly mandatory.

- Experience integrating front-end applications with APIs and backend services.

- Solid understanding of distributed systems and cloud environments (AWS preferred).

- Familiarity with CI/CD pipelines, automated testing, and modern delivery practices.

- Experience with performance optimisation, debugging, and observability tools.

- Exposure to legacy systems and modernisation projects is advantageous.

- Knowledge of secure coding practices and common security standards.

- Experience mentoring engineers or influencing technical decisions is beneficial but not mandatory.
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