Principal Full Stack Engineer & Architecture Lead
Full-time Permanent Mid-level Senior
Posted 12 May 2026
Description
Location: Hybrid (2-3 days per week in our Canary Wharf office)
Reports to: Director of Engineering
Works closely with: CTO / Head of Data, Head of product
Join Us at The Centre for ADHD Research and Excellence: Shaping the Future of Accessible Healthcare
At CARE ADHD, we're revolutionising private healthcare by making ADHD assessments and treatment more affordable and accessible to those who need it. Our client-centred approach, combined with lean methodology and a focus on continuous improvement, drives our commitment to excellence. We embrace an innovative mindset, encouraging rapid learning and adaptation through our 'fail fast' ethos. With ambitious plans to become the largest ADHD service provider outside the NHS within the next five years, we are committed to pushing boundaries and fostering innovation.
What You'll Be Doing:
- Lead architecture and technical design across the platform
- Define scalable, secure, and maintainable engineering patterns and standards
- Provide architectural oversight across frontend, backend, APIs, infrastructure, and integrations
- Act as a technical authority and go-to engineering leader for complex technical decisions
- Partner closely with the Director of Engineering to align technical strategy with product delivery
- Drive long-term platform scalability, resilience, and performance
- 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 / Next.js
- Develop and operate cloud-native AWS serverless solutions
- Design and optimise PostgreSQL data models and queries
- Support engineering teams in breaking down and delivering complex technical initiatives
Cloud, DevOps & CI/CD
- Design and implement robust CI/CD pipelines
- Improve deployment automation, release processes, and engineering workflows
- Build and maintain Infrastructure as Code using Terraform or AWS CDK
- Drive best practices across:
- Observability and monitoring
- Automated testing
- Security
- Reliability and resilience
- Ensure systems are secure, scalable, and compliant with GDPR and healthcare-related requirements
Engineering Leadership
- Work closely with engineering team leads to guide technical delivery
- Conduct code reviews and uphold high engineering standards
- Mentor and support engineers across the organisation
- Promote a strong engineering culture focused on quality, collaboration, and continuous improvement
- Help establish best practices for architecture, coding standards, testing, and operational excellence
Core Technology Stack
- AWS: Lambda, API Gateway, EventBridge, SQS, Step Functions, S3, CloudWatch, RDS
- Frontend: Next.js / Tailwind
- Infrastructure & DevOps: Terraform / AWS CDK, CI/CD pipelines
- Monitoring & Observability: CloudWatch, logging, metrics, tracing
To Thrive in This Role You'll Need:
- 10+ years of software engineering experience
- Proven experience operating as a senior/principal engineer or technical architecture lead
- Strong experience designing and building production systems in AWS
- Deep hands on experience with Node.js and TypeScript, React / Next.js, PostgreSQL and AWS serverless technologies
- Experience designing and maintaining CI/CD pipelines and modern engineering workflows
- Experience leading technical direction across multiple engineering teams
Technical Strength
- Deep understanding of:
- Distributed systems
- Event driven architectures
- Scalability and performance optimisation
- Experience with:
- Observability and monitoring
- Resilience and fault tolerance patterns
- Secure system design and data protection
- Comfortable balancing strategic architecture decisions with hands on implementation
Mindset & Approach
- Builder mentality, you enjoy designing and delivering solutions
- Strong ownership and accountability
- Collaborative and supportive technical leader
- Pragmatic and outcome focused
- Passionate about engineering quality and scalable systems
- Comfortable operating in fast moving and evolving environments
Nice to Have
- Experience in healthtech, mental health, or regulated environments
- Familiarity with GDPR and healthcare related compliance requirements
- Experience with AI/ML integrations or personalization systems
- Experience building highly scalable SaaS platforms
- Familiarity with product led or startup environments
What Success Looks Like
- A scalable, secure, and maintainable platform architecture
- High quality engineering standards across teams
- Reliable CI/CD pipelines and efficient delivery processes
- Strong collaboration between engineering, architecture, and product teams
- Engineering teams empowered through technical leadership and mentorship
- A platform that positively impacts ADHD care and user outcomes
What You Can Expect from Us
- Work hybrid in our Canary Wharf office 2 3 days per week
- 30 days holiday (includes UK public holidays)
- Team get togethers
- A paid day off on your birthday
- Office equipment when you join
- Pension contribution
- Be part of one of the UK's most ambitious HealthTech start ups
We aim to make our hiring process as streamlined as possible. Successful applicants will have:
Stage 1 - Screening Call with our Talent Acquisition Specialist
Stage 2 - Skills based Interview with Hiring Manager
Stage 3 - Panel Interview
Stage 4 - Offer
Apply with Confidence
Studies show that men apply for roles when they meet around 60% of the qualifications, whereas women and other marginalised groups often apply only if they meet every requirement. If you believe you're a great fit but don't meet every single requirement, we encourage you to apply!
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.