Find a job 
Featured Companies 
Featured Universities 
For Companies At a Glance
- Tasks: Design and build high-quality applications for web, mobile, and backend environments.
- Company: Join a leading tech company in the global lottery and gaming industry.
- Benefits: Hybrid work model, competitive salary, and opportunities for professional growth.
- Why this job: Make an impact by working on innovative projects with cutting-edge technologies.
- Qualifications: Proven experience in senior engineering roles and strong front-end tech skills.
- Other info: Collaborative environment with mentorship opportunities and career advancement.
The predicted salary is between 60000 - 80000 £ per year.
One of my clients is looking for a Senior frontend developer role able to join their offices in London or New Castle (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.
Senior Frontend Developer in London employer: Pentasia
Contact Detail:
Pentasia Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Frontend Developer in London
✨Tip Number 1
Network like a pro! Reach out to your connections in the industry, attend meetups, and engage with online communities. You never know who might have the inside scoop on job openings or can refer you directly.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your best projects, especially those that highlight your expertise in front-end technologies. This is your chance to demonstrate what you can bring to the table beyond just a CV.
✨Tip Number 3
Prepare for interviews by brushing up on common technical questions and coding challenges. Practice makes perfect, so consider mock interviews with friends or use platforms that offer coding challenges to sharpen your skills.
✨Tip Number 4
Don’t forget to apply through our website! We’ve got some fantastic opportunities waiting for you, and applying directly can sometimes give you an edge. Plus, it’s super easy to keep track of your applications!
We think you need these skills to ace Senior Frontend Developer in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV is tailored to the Senior Frontend Developer role. Highlight your experience with JavaScript/TypeScript frameworks and any relevant projects you've worked on. We want to see how your skills match up with what we're looking for!
Showcase Your Projects: Include links to your previous work or GitHub repositories. This gives us a chance to see your coding style and the quality of your work. Don't be shy—show off those world-class apps you've built!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Explain why you're passionate about frontend development and how you can contribute to our team. We love seeing enthusiasm and a good fit for our culture.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures it gets into the right hands. Plus, it shows you're keen on joining our team!
How to prepare for a job interview at Pentasia
✨Know Your Tech Stack
Make sure you’re well-versed in the front-end technologies mentioned in the job description, especially JavaScript and TypeScript frameworks like React. Brush up on your knowledge of APIs and backend services integration, as you'll likely be asked to demonstrate your understanding during the interview.
✨Showcase Your Problem-Solving Skills
Prepare to discuss past projects where you took ownership of complex systems. Be ready to explain how you translated complex requirements into scalable solutions. Use specific examples to illustrate your thought process and the impact of your decisions.
✨Collaboration is Key
Since the role involves working closely with cross-functional teams, think of examples that highlight your collaborative skills. Be prepared to talk about how you’ve worked with product managers, QA, and design teams to deliver successful projects.
✨Emphasise Continuous Improvement
Discuss your experience with improving engineering standards and reducing technical debt. Share any initiatives you've led or contributed to that enhanced performance, scalability, or security. This shows you're not just a coder but someone who cares about the bigger picture.