Senior frontend developer

# Senior frontend developer##### Location: **Hybrid – London or Newcastle, United Kingdom** Salary: **up to 80000 GBP gross per year** | Ref: **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/TypeScript 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.#J-18808-Ljbffr…