Principal Full Stack Engineer & Architecture Lead

Principal Full Stack Engineer & Architecture Lead

London (Hybrid)

80000 - 90000 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 peoples lives.

Our client is building one of the UKs 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.

Youll 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 TypeScript React and
• 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
TypeScript

Frontend
React 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 TypeScript React/ 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

Whats On Offer

• 80000 - 90000 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