Principal Engineer (Web) in London

Principal Engineer (Web) in London

London Full-Time 48000 - 72000 Β£ / year (est.) No home office possible
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At a Glance

  • Tasks: Lead the design and development of high-performance web platforms.
  • Company: Join a forward-thinking tech company with a focus on innovation.
  • Benefits: Enjoy remote work, competitive salary, and opportunities for professional growth.
  • Why this job: Shape the future of web technology and mentor the next generation of engineers.
  • Qualifications: 10+ years in software development with strong leadership and technical skills.
  • Other info: Dynamic role with a chance to influence large-scale projects and strategies.

The predicted salary is between 48000 - 72000 Β£ per year.

We are looking for a Principal Engineer (Web) to lead the design, architecture, and development of scalable, high-performance web platforms. As a hands-on technical leader, you will set the engineering vision, drive technical excellence, and mentor teams to deliver exceptional web experiences that serve thousands of users. You will play a pivotal role in shaping the future of our web ecosystem β€” defining best practices, guiding architectural decisions, and ensuring our front-end and back-end systems are robust, performant, and secure.

Key Responsibilities

  • Architect & Design: Define and evolve the web architecture to support scalability, reliability, and maintainability across products and services.
  • Technical Leadership: Act as a trusted advisor to engineering teams, providing hands-on guidance in design, implementation, and code reviews.
  • Innovation: Identify and evaluate new technologies, frameworks, and tools that improve development efficiency and product quality.
  • Collaboration: Partner closely with product, design, and platform teams to align technical solutions with business goals.
  • Mentorship: Coach and develop senior engineers, fostering a culture of excellence, ownership, and continuous learning.
  • Code Quality: Drive adoption of engineering best practices β€” testing, CI/CD, observability, and secure coding.
  • Performance Optimization: Champion front-end and back-end performance improvements for speed, accessibility, and responsiveness.
  • Strategic Influence: Contribute to long-term technical strategy, roadmaps, and cross-functional initiatives.

Required Qualifications

  • Experience: 10+ years of professional software development experience, with at least 3 years in a senior/principal role.
  • Technical Expertise: Expertise in quality engineering practices inclusive of unit, integration, functional, regression and performance testing. Strong background in scalable web architecture, microservices, and cloud infrastructure (AWS, GCP, or Azure). Solid grasp of web performance optimization, caching, and distributed systems. Experience with CI/CD pipelines, containerization (Docker, Kubernetes), and infrastructure-as-code.
  • Leadership: Proven experience mentoring engineers, influencing large-scale technical decisions, and driving cross-team initiatives.
  • Communication: Excellent ability to articulate complex ideas to both technical and non-technical stakeholders.

Preferred Qualifications

  • Experience in high-traffic or large-scale web applications.
  • Prior contributions to open-source projects or technical publications.
  • Familiarity with web security, compliance, and accessibility standards (OWASP, WCAG).
  • Master's degree in Computer Science or related field (preferred, not required).

Principal Engineer (Web) in London employer: CAI Software, LLC

As a Principal Engineer (Web) at our company, you will join a dynamic and innovative team that values technical excellence and fosters a collaborative work culture. We offer flexible remote working options, competitive benefits, and ample opportunities for professional growth, ensuring you can thrive in your career while making a significant impact on our web ecosystem. Our commitment to mentorship and continuous learning empowers you to lead and inspire others, making this an exceptional place to advance your engineering career.
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Contact Detail:

CAI Software, LLC Recruiting Team

StudySmarter Expert Advice 🀫

We think this is how you could land Principal Engineer (Web) in London

✨Tip Number 1

Network like a pro! Reach out to your connections in the industry, attend meetups, and engage in online forums. 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 and contributions, especially those related to scalable web architecture and performance optimisation. This will give potential employers a taste of what you can bring to the table.

✨Tip Number 3

Prepare for interviews by brushing up on your technical knowledge and soft skills. Practice explaining complex concepts clearly, as you'll need to communicate effectively with both technical and non-technical stakeholders.

✨Tip Number 4

Don’t forget to apply through our website! We love seeing candidates who are genuinely interested in joining us. Tailor your application to highlight how your experience aligns with our vision for exceptional web experiences.

We think you need these skills to ace Principal Engineer (Web) in London

Web Architecture
Microservices
Cloud Infrastructure (AWS, GCP, Azure)
Quality Engineering Practices
Unit Testing
Integration Testing
Functional Testing
Regression Testing
Performance Testing
CI/CD Pipelines
Containerization (Docker, Kubernetes)
Infrastructure-as-Code
Web Performance Optimization
Caching
Web Security Standards (OWASP, WCAG)

Some tips for your application 🫑

Tailor Your CV: Make sure your CV reflects the skills and experiences that align with the Principal Engineer role. Highlight your expertise in scalable web architecture and any leadership roles you've held. We want to see how you can contribute to our engineering vision!

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about web development and how your experience aligns with our goals at StudySmarter. Don’t forget to mention any innovative projects or technologies you've worked with.

Showcase Your Technical Skills: In your application, be sure to highlight your technical expertise, especially in areas like CI/CD, microservices, and cloud infrastructure. We love seeing candidates who are hands-on and can drive technical excellence, so don’t hold back!

Apply Through Our Website: We encourage you to apply directly through our website for the best chance of getting noticed. It’s the easiest way for us to keep track of your application and ensure it reaches the right people. We can’t wait to see what you bring to the table!

How to prepare for a job interview at CAI Software, LLC

✨Know Your Tech Inside Out

Make sure you’re well-versed in the technologies mentioned in the job description. Brush up on scalable web architecture, microservices, and cloud infrastructure like AWS or Azure. Be ready to discuss your past experiences with these technologies and how they can be applied to the role.

✨Showcase Your Leadership Skills

As a Principal Engineer, you'll need to demonstrate your ability to lead and mentor teams. Prepare examples of how you've influenced technical decisions and guided engineers in previous roles. Highlight any successful projects where your leadership made a difference.

✨Prepare for Technical Questions

Expect in-depth technical questions that assess your understanding of code quality, performance optimisation, and CI/CD practices. Practice explaining complex concepts clearly, as you’ll need to communicate effectively with both technical and non-technical stakeholders.

✨Align with Business Goals

Understand the company's mission and how the engineering team contributes to it. Be prepared to discuss how your technical solutions can align with business objectives. This shows that you’re not just a techie but also someone who thinks strategically about the bigger picture.

Principal Engineer (Web) in London
CAI Software, LLC
Location: London
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