Principal Software Engineer

Yolk Recruitment Ltd; England; Hybrid; GBP 72,000 - 85,000; Full time

Job summary

A renowned recruitment agency is seeking a Principal Software Engineer based in Cardiff or hybrid. The role involves technical leadership across teams, focusing on React, NestJS, and cloud-native development. Successful candidates will mentor engineers and drive high-quality delivery within an inclusive and innovative work culture. Excellent benefits include generous holidays and annual share schemes.

Benefits

Up to £85,000 salary

Annual share scheme

Generous holidays (up to 38 days)

Flexible working

Qualifications

• Strong experience in a Senior or Staff Engineer role across web and mobile platforms.
• Deep technical knowledge of React and NestJS, including state management.
• Proven success designing and maintaining micro frontline architectures.

Responsibilities

• Provide hands-on technical leadership across squads.
• Shape strategic initiatives and support delivery teams.
• Mentor engineers and promote best practices.

Skills

Technical leadership in software engineering

React and NestJS proficiency

Micro frontend architecture design

Cloud-native development (GCP/Azure)

CI/CD practices

Docker and Kubernetes familiarity

Mentoring engineers

Tools

Docker

Kubernetes

Terraform

Job description

Principle Software Engineer
Cardiff / Hybrid
Up to £85,000 + annual share scheme + excellent benefits

What You'll Do:

You'll provide hands-on technical leadership across squads, ensuring high standards in architecture, engineering quality, and delivery within a fast-paced, cloud-native environment. Acting as a key technical advisor, you'll shape strategic initiatives, support delivery teams, and champion best practices in frontend and backend engineering.

With a focus on React and NestJS, micro frontends, and scalable DevOps tooling, you'll play a pivotal role in mentoring engineers, aligning technical decisions with business goals, and fostering a culture of continuous improvement.

What You'll Bring:

• Strong experience in a Senior or Staff Engineer role across web and mobile platforms
• Deep technical knowledge of React and NestJS, including state management and server-side rendering
• Proven success designing and maintaining micro frontend architectures using module federation
• Proficiency with cloud-native development in GCP or Azure, including secure and scalable deployments
• Strong command of modern CI/CD practices, test automation, and observability
• Familiarity with infrastructure tooling such as Docker, Kubernetes, Helm, and Terraform
• Broad testing expertise across unit, integration, end-to-end, and non-functional testing
• Understanding of secure coding practices and web/mobile security principles
• Experience mentoring engineers and leading by example to promote high-quality delivery
• Desirable: familiarity with mobile development using Ionic Capacitor or Guidewire products

Why You Should Apply:

You'll step into a role with real influence, joining a company recognised as a Great Place to Work and known for its inclusive, people-first culture. You'll enjoy flexible working, generous holidays (up to 38 days including bank holidays), and free shares each year. With a strong focus on personal growth and team collaboration, you'll be part of a forward-thinking engineering community that values innovation and leadership.

Ready to Apply?

Contact Dan Newton to find out more.
Please apply with a CV and a cover letter outlining why you're perfect for the role.
Know someone great for the job? We offer a referral scheme-just get in touch!
Note: We do our best to respond to every application, but due to volume, we can't always guarantee it. If you haven't heard back within 7 days, unfortunately, you haven't been successful this time. Keep an eye on our site for new opportunities!