Principal Engineer (Architecture & Platform) in London

Principal Engineer (Architecture & Platform) in London

London Full-Time 80000 - 100000 £ / year (est.) Home office (partial)
Care ADHD

At a Glance

  • Tasks: Lead technical design and architecture for innovative ADHD healthcare solutions.
  • Company: Join a pioneering HealthTech start-up transforming ADHD assessments and treatments.
  • Benefits: Enjoy competitive salary, hybrid work, 25 days holiday, and a birthday day off.
  • Other info: Be part of a diverse team committed to continuous learning and innovation.
  • Why this job: Make a real impact in healthcare while working with cutting-edge technologies.
  • Qualifications: Expertise in Node.js, TypeScript, React, and cloud-native development required.

The predicted salary is between 80000 - 100000 £ per year.

Location Hybrid (2-3 days per week in our Canary Wharf office)

Salary Negotiable

Reports to Director of Product Engineering

Overview

CARE ADHD is revolutionising private healthcare by making ADHD assessments and treatment more affordable and accessible. The organisation operates on a lean methodology, continuous improvement and a fail‑fast ethos, with plans to become the largest ADHD service provider outside the NHS within five years.

What You’ll Be Doing

  • Technical Leadership & Architecture
    • Lead architecture and technical design across the platform.
    • Define scalable, secure, and maintainable engineering patterns, standards, and best practices.
    • Provide architectural leadership across frontend, backend, APIs, infrastructure, data, and third‑party integrations.
    • Act as the senior technical authority for complex engineering decisions and architectural challenges.
    • Influence technical direction across multiple engineering teams, ensuring consistency, quality, and alignment with platform strategy.
    • Partner closely with the Director of Engineering to align technical strategy with product delivery and business objectives.
    • Drive long‑term platform scalability, resilience, performance, and operational excellence.
    • Evaluate emerging technologies and identify opportunities for innovation and continuous improvement.
    • Help shape and maintain the organisation's technical roadmap.
  • Hands‑On Engineering
    • Contribute directly to production code across backend and frontend services.
    • Design and develop scalable services using Node.js and TypeScript.
    • Build modern frontend applications using React and Next.js.
    • Develop and operate cloud‑native AWS serverless solutions.
    • Design, optimise, and maintain PostgreSQL data models and queries.
    • Support engineering teams in breaking down and delivering complex technical initiatives.
    • Lead by example through high‑quality software design, coding standards, and engineering practices.
  • Engineering Excellence & Mentorship
    • Mentor senior engineers and technical leads, helping raise technical capability across the organisation.
    • Drive engineering excellence through coaching, design reviews, technical leadership, and knowledge sharing.
    • Champion modern software engineering practices including CI/CD, observability, automated testing, infrastructure as code, and cloud‑native architectures.
    • Support the adoption of AI‑assisted development practices where they provide meaningful value.
    • Foster a culture of continuous learning, technical curiosity, and pragmatic decision‑making.
    • Encourage collaboration across engineering, product, and operational teams to deliver high‑quality outcomes.

What We’re Looking for

  • Significant experience building and scaling modern SaaS platforms.
  • Strong expertise in Node.js, TypeScript, React, and modern web architectures.
  • Deep understanding of software architecture, distributed systems, API design, and cloud native development.
  • Experience designing and operating solutions on AWS.
  • Strong knowledge of PostgreSQL and data modelling.
  • Proven ability to influence technical direction across multiple teams.
  • Excellent communication skills with the ability to explain complex technical concepts to both technical and non‑technical audiences.
  • A passion for mentoring engineers and helping teams succeed.

Benefits

  • Competitive salary.
  • Hybrid work in our Canary Wharf office 2‑3 days per week.
  • 25 days holiday plus UK public holidays.
  • Team get‑togethers.
  • A paid day off on your birthday.
  • Office equipment when you join plus £500 stipend to set up your home office.
  • Pension contribution.
  • Be part of one of the UK’s most ambitious HealthTech start‑ups.

Eligibility and EEO Statement

At Care ADHD, we’re committed to building a diverse and inclusive environment. We encourage applications from candidates of all backgrounds, especially those from historically marginalised communities, as we work together to create a more equitable future.

Principal Engineer (Architecture & Platform) in London employer: Care ADHD

At Care ADHD, we pride ourselves on being an exceptional employer, offering a dynamic hybrid work environment in the heart of Canary Wharf. Our commitment to continuous improvement and innovation fosters a culture of collaboration and mentorship, empowering employees to grow their technical skills while contributing to meaningful healthcare solutions. With competitive salaries, generous holiday allowances, and a focus on work-life balance, we are dedicated to creating a rewarding workplace for all team members.

Care ADHD

Contact Details:

Care ADHD Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Principal Engineer (Architecture & Platform) in London

Tip Number 1

Network like a pro! Reach out to folks in your industry on LinkedIn or at meetups. A friendly chat can lead to opportunities that aren’t even advertised yet.

Tip Number 2

Show off your skills! Create a portfolio or GitHub repo showcasing your projects, especially those using Node.js, TypeScript, and React. This gives potential employers a taste of what you can do.

Tip Number 3

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

Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who are genuinely interested in joining our mission.

We think you need these skills to ace Principal Engineer (Architecture & Platform) in London

Technical Leadership
Architecture Design
Node.js
TypeScript
React
Next.js
AWS

Some tips for your application 🫡

Tailor Your Application:Make sure to customise your CV and cover letter to highlight your experience with Node.js, TypeScript, and modern web architectures. We want to see how your skills align with our mission at Care ADHD!

Showcase Your Leadership Skills:Since this role involves technical leadership, don’t forget to mention any past experiences where you’ve influenced technical direction or mentored other engineers. We love seeing examples of how you've driven engineering excellence!

Be Clear and Concise:When writing your application, keep it straightforward and to the point. Use clear language to explain complex concepts, as we value excellent communication skills. Remember, we want to understand your thought process easily!

Apply Through Our Website:We encourage you to submit your application directly through our website. It’s the best way for us to receive your details and ensures you’re considered for this exciting opportunity at Care ADHD!

How to prepare for a job interview at Care ADHD

Know Your Tech Inside Out

Make sure you’re well-versed in Node.js, TypeScript, React, and AWS. Brush up on your knowledge of software architecture and distributed systems, as you’ll likely be asked to explain complex concepts. Being able to discuss your past experiences with these technologies will show that you’re not just familiar but also capable.

Showcase Your Leadership Skills

As a Principal Engineer, you’ll need to demonstrate your ability to lead and mentor. Prepare examples of how you’ve influenced technical direction in previous roles or how you’ve helped teams improve their engineering practices. This will highlight your capability to drive engineering excellence and foster collaboration.

Align with Their Vision

Understand CARE ADHD’s mission to revolutionise private healthcare. Be ready to discuss how your technical expertise can contribute to their goals of scalability and operational excellence. Showing that you’re aligned with their vision will make you a more attractive candidate.

Prepare for Hands-On Challenges

Expect some hands-on coding challenges or technical discussions during the interview. Practice coding problems related to backend and frontend services, and be prepared to discuss your approach to designing scalable services. This will demonstrate your practical skills and readiness to contribute directly to production code.