Senior JavaScript Developer

Karat Inc.; City Of London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading software development firm in the City of London is seeking a Senior Software Engineer to design and develop modern applications. This role involves working with frontend technologies like JavaScript/TypeScript, mentoring junior engineers, and making architectural decisions. Ideal candidates will have experience with Docker, Kubernetes, and frontend frameworks. The company offers a dynamic work environment with a strong focus on diversity and inclusion.

Benefits

Up to 15% pension contribution

Annual bonus based on group performance

Flexible benefits tailored to your lifestyle

30 days' holiday plus bank holidays

Generous parental leave and wellbeing support

Qualifications

• Strong proficiency in JavaScript/TypeScript for building modern, responsive user interfaces.
• Experience with frontend frameworks and libraries such as React, Next.js, or Angular.
• Commitment to writing reliable and maintainable code.

Responsibilities

• Design, develop, test, and deploy frontend services.
• Collaborate with Product Owners, Architects, and Quality Engineers.
• Mentor junior engineers and foster a culture of learning.

Skills

JavaScript/TypeScript proficiency

Experience with React/Next.js/Redux/Vue.js/Angular

Docker experience

Kubernetes experience

Experience with CI/CD tools

Automated testing tools knowledge

Tools

Docker

Kubernetes

Google Cloud Platform

Job description

As a Senior Software Engineer, you'll play a key role in designing and building modern applications that touch millions of lives. You'll:

• Design, develop, test, and deploy frontend services.
• Build and deploy containerized applications with Docker and Kubernetes.
• Apply Domain-Driven Design (DDD) and Test-Driven Development (TDD) principles.
• Collaborate closely with Product Owners, Architects, and Quality Engineers.
• Integrate with internal systems and third-party APIs to create seamless user experiences.
• Contribute to architectural decisions and help shape our engineering strategy.
• Mentor junior engineers and foster a culture of learning and inclusion.

If you're someone who thrives in collaborative environments, enjoys solving meaningful problems, and wants to make a real impact - this could be the perfect next step in your career. We're looking for engineers who are adaptable, curious, and passionate about building great software!

Requirements

• Programming Expertise: Strong proficiency in JavaScript/TypeScript for building modern, responsive user interfaces.
• Frontend Development: Experience with frameworks and libraries such as React, Next.js, Redux, Vue.js, or Angular is highly desirable.
• DevOps & Cloud: Experience with CI/CD tools such as GitHub Actions, Jenkins, or Harness.
• DevOps & Cloud: Familiarity with Docker for containerization and Kubernetes for orchestration.
• DevOps & Cloud: Exposure to cloud platforms - Google Cloud Platform (GCP) preferred, but AWS or Azure experience is also welcome.
• Quality Testing & Automation: Experience with automated testing tools like Jest, Cypress, or Pact.
• Quality Testing & Automation: Commitment to writing reliable, maintainable, and well-tested code.

We're proud to be a leader in diversity, equity, and inclusion. From our menopause health package to our Working with Cancer initiative, we're creating a workplace where everyone can thrive. We're also a Disability Confident Leader, and we guarantee interviews for a fair and proportionate number of applicants with disabilities, long-term health conditions, or neurodivergence who meet the minimum criteria.

Benefits

• Up to 15% pension contribution
• Annual bonus (based on Group performance)
• Share schemes, including free shares
• 30 days' holiday plus bank holidays
• Flexible benefits tailored to your lifestyle
• Generous parental leave and wellbeing support

Ready for a career where you can have a positive impact as you learn, grow and thrive?