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Principal Full Stack Engineer & Architecture Lead London (Hybrid) 80,000 - 90,000 + Benefits Command Recruitment is proud to be partnering with an ambitious and rapidly growing healthcare company that is transforming access to specialist healthcare services across the UK. This is a fantastic opportunity for an experienced Principal Engineer or Technical Architecture Lead to play a key role in shaping a modern, cloud-native healthcare platform that is making a genuine impact on people's lives. Our client is building one of the UK's most innovative healthcare service platforms and is seeking a hands-on technical leader who can combine strategic architecture with strong full-stack engineering expertise. The Opportunity As Principal Full Stack Engineer & Architecture Lead, you will take ownership of platform architecture, engineering standards, cloud infrastructure, and technical delivery across the business. You'll work closely with senior leadership, including the CTO, Director of Engineering, Product teams, and Data teams, to drive scalability, resilience, performance, and engineering excellence while remaining hands-on with development. This role would suit someone who enjoys solving complex technical challenges, mentoring engineers, and building modern distributed systems within a fast-moving product-led environment. Key Responsibilities Architecture & Technical Leadership - Lead platform architecture and technical design decisions
- Define scalable, secure, and maintainable engineering standards
- Provide technical leadership across frontend, backend, APIs, infrastructure, and integrations
- Drive platform scalability, resilience, observability, and performance
- Partner with leadership teams to align technical strategy with business goals
- Act as the senior technical authority for complex engineering decisions
Hands-On Engineering - Contribute directly to backend and frontend production code
- Build scalable applications using Node.js, TypeScript, React, and Next.js
- Design and develop AWS serverless and event-driven systems
- Develop and optimise PostgreSQL databases and queries
- Support engineering teams with the delivery of complex technical initiatives
Cloud, DevOps & Infrastructure - Design and maintain CI/CD pipelines and deployment automation
- Build Infrastructure as Code using Terraform or AWS CDK
- Improve engineering workflows, release processes, and platform reliability
- Implement best practices across monitoring, logging, security, testing, and resilience
- Ensure systems remain secure, scalable, and compliant with GDPR and healthcare regulations
Engineering Leadership - Mentor and support engineers across the organisation
- Conduct code reviews and promote engineering best practices
- Help establish coding standards, testing frameworks, and operational excellence
- Foster a collaborative, high-performing engineering culture
Technology Stack Cloud & Infrastructure
AWS (Lambda, API Gateway, EventBridge, SQS, Step Functions, S3, CloudWatch, RDS) Backend
Node.js, TypeScript Frontend
React, Next.js, Tailwind CSS Data & Architecture
PostgreSQL, Serverless, Event-Driven Microservices DevOps & Observability
Terraform / AWS CDK, CI/CD, Monitoring & Logging About You We are looking for a technically strong and commercially minded engineering leader with: - 10+ years of software engineering experience
- Proven experience operating at Principal Engineer, Staff Engineer, or Architecture Lead level
- Strong AWS cloud and serverless architecture expertise
- Excellent full-stack development experience across Node.js, TypeScript, React/Next.js, and PostgreSQL
- Experience leading technical direction across engineering teams
- Strong understanding of distributed systems and event-driven architecture
- Experience designing scalable, secure, production-grade systems
- A hands-on mindset with a passion for building high-quality technology
Desirable Experience - Life Science or regulated industry experience
- GDPR and data security knowledge
- AI/ML integrations or personalisation systems
- SaaS or startup experience
What's On Offer - 80,000 - 90,000 salary
- Hybrid working (office 2-3 days per week)
- 30 days holiday including bank holidays
- Pension contribution
- Birthday day off
- Modern equipment provided
- Team events and collaborative culture
- Opportunity to shape a fast-scaling healthcare platform with genuine social impact
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