At a Glance
- Tasks: Lead and mentor developers while building impactful web and mobile applications.
- Company: Join a fast-moving engineering team in a flexible, hybrid environment.
- Benefits: Competitive salary, perks, healthcare options, and a focus on wellbeing.
- Other info: Innovative culture prioritising collaboration and career growth.
- Why this job: Work with cutting-edge tech like AI and cybersecurity on meaningful projects.
- Qualifications: Strong full stack JavaScript experience and mentoring skills required.
The predicted salary is between 70000 - 70000 € per year.
Salary: £60,000 - £80,000 base salary plus benefits, perks, and healthcare options
Location: Cardiff - Hybrid
We're looking for a Senior Full Stack JavaScript Developer to join a fast-moving engineering team building modern web and mobile applications that deliver real impact. You'll lead technical delivery, mentor engineers, and help shape scalable, secure solutions across projects involving cutting-edge technologies including AI, cybersecurity, and autonomous systems.
What you'll do:
- Lead and mentor developers, driving engineering best practices
- Build scalable web & mobile apps using JavaScript, Node.js, React/Angular/Vue
- Design and develop robust front-end and back-end systems
- Apply TDD and modern development practices
- Collaborate with architects, clients, and cross-functional teams
- Use AI tools (e.g. GitHub Copilot) to enhance delivery and quality
What we're looking for:
- Strong full stack JavaScript experience (Node.js + modern frameworks)
- Experience with Express.js, Nest.js, or Hapi.js
- Front-end expertise in React, Angular, Vue or similar (including Remix.js)
- Strong HTML5, CSS3, JavaScript (ES6+), TypeScript skills
- Experience in a senior/lead role with mentoring responsibility
- Passion for building scalable, high-quality software
Why join us?
Work on meaningful, high-impact projects in a flexible, hybrid environment where innovation, collaboration, and wellbeing are genuinely prioritised. If you're ready to take the lead on exciting engineering challenges, we'd love to hear from you.
Senior JavaScript Developer in Cardiff employer: 83zero Ltd
Join a dynamic team in Cardiff as a Senior Full Stack JavaScript Developer, where you'll not only lead and mentor fellow engineers but also work on impactful projects that leverage cutting-edge technologies. Our hybrid work environment fosters innovation and collaboration, ensuring that your wellbeing is a top priority while providing ample opportunities for professional growth and development.
StudySmarter Expert Advice🤫
We think this is how you could land Senior JavaScript Developer in Cardiff
✨Tip Number 1
Network like a pro! Reach out to your connections in the tech world, especially those who work with JavaScript. Attend meetups or webinars to meet potential employers and showcase your skills.
✨Tip Number 2
Show off your projects! Create a portfolio that highlights your best work with JavaScript, Node.js, and any frameworks you've used. This is your chance to demonstrate your expertise and passion for building scalable applications.
✨Tip Number 3
Prepare for technical interviews by brushing up on your coding skills. Practice common algorithms and system design questions, and don't forget to review TDD principles since they’re key in modern development practices.
✨Tip Number 4
Apply through our website! We love seeing candidates who are genuinely interested in joining our team. Tailor your application to highlight your leadership experience and how you can contribute to our innovative projects.
We think you need these skills to ace Senior JavaScript Developer in Cardiff
Some tips for your application 🫡
Tailor Your CV:Make sure your CV highlights your full stack JavaScript experience and any relevant frameworks you've worked with. We want to see how your skills align with the role, so don’t be shy about showcasing your expertise!
Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Share your passion for building scalable software and mention any mentoring experience you have. Let us know why you’re excited about joining our team and what you can bring to the table.
Showcase Your Projects:If you’ve worked on any impressive web or mobile applications, make sure to include them in your application. We love seeing real examples of your work, especially if they involve cutting-edge technologies like AI or cybersecurity!
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 you don’t miss out on any important updates. Plus, it shows you’re keen to join our team!
How to prepare for a job interview at 83zero Ltd
✨Know Your Tech Stack Inside Out
Make sure you’re well-versed in the technologies mentioned in the job description, especially JavaScript, Node.js, and frameworks like React or Angular. Brush up on your knowledge of Express.js or Nest.js too, as these are crucial for the role.
✨Showcase Your Leadership Skills
Since this position involves mentoring and leading a team, be prepared to discuss your previous experiences in leadership roles. Share specific examples of how you've guided junior developers and implemented best practices in your past projects.
✨Demonstrate Problem-Solving Abilities
Be ready to tackle technical challenges during the interview. Practice coding problems and be prepared to explain your thought process. This will show your ability to think critically and apply TDD principles effectively.
✨Highlight Your Passion for Innovation
Express your enthusiasm for working with cutting-edge technologies like AI and cybersecurity. Discuss any relevant projects or tools you've used, such as GitHub Copilot, to demonstrate your commitment to enhancing delivery and quality in software development.
