Principal Full Stack Engineer & Architecture Lead

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