GCP/AWS Platform Engineer - start-up experience in London
GCP/AWS Platform Engineer - start-up experience

GCP/AWS Platform Engineer - start-up experience in London

London Full-Time 60000 - 80000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Build and operate GCP infrastructure for innovative healthcare AI solutions.
  • Company: Join an early-stage health AI company revolutionising cardiometabolic care.
  • Benefits: Competitive salary, equity participation, and a dynamic work environment.
  • Why this job: Make a real impact in healthcare while working with cutting-edge technology.
  • Qualifications: 3+ years in cloud infrastructure, strong GCP and Terraform experience required.
  • Other info: Collaborate with industry leaders and enjoy excellent career growth opportunities.

The predicted salary is between 60000 - 80000 £ per year.

The Challenge

Cardiometabolic conditions will impact 80-90% of people throughout their lifetimes, representing the leading cause of death globally and an important risk factor for a variety of neurodegenerative diseases and cancer. Sustainably addressing these diseases requires breakthrough therapeutics, AI/ML innovation, and transformative business models that translate clinical outcomes into economic value.

The Opportunity

Own the cloud platform that powers Onsera Health's breakthrough healthcare AI. We are backed by Population Health Partners (PHP), the proven venture platform behind Metsera and Corsera Health, and, together, we're building the future of population health management. As our Platform Engineer, you will build and operate production-grade GCP infrastructure that enables fast and secure product delivery across all our global engineering and AI teams. You will be in the central seat across all our deliveries including data, ML, LLM, agentic AI, and applications.

Responsibilities

  • Own GCP infrastructure – Operate and evolve production and non-production environments; manage cost visibility, quotas, and alerts; maintain clean environment separation with appropriate access controls.
  • Implement Infrastructure as Code – Build and maintain Terraform across projects, networks, IAM, and services.
  • Enforce security and compliance – Implement controls aligned with healthcare requirements (HIPAA, SOC 2, ISO 27001); configure IAM, service accounts, workload identity, network security, and audit logging; support audits and remediation activities.
  • Manage internet-facing architecture – Provision and secure load balancers, Cloud Run, GKE, DNS, certificates, and domain routing; own ingress, WAF, rate-limiting, and auth integration.
  • Enable product, data, and ML teams – Translate product and data requirements into secure, scalable platform designs; provision tooling and environments for ML experimentation, data pipelines, and workflow orchestration.
  • Provision and secure LLM and agentic AI infrastructure – Deploy and manage generative AI toolkits, model serving endpoints and data governance for AI workloads.
  • Drive reliability and operations – Support incident response and root-cause analysis; improve observability through logging, metrics, and tracing; contribute to on-call processes proportionate to company stage.
  • Continuously improve contributor experience – Enhance platform reliability, security posture, and team productivity.

What We Offer

  • Mission-driven work addressing critical public health and healthcare economics challenges.
  • Ground-floor opportunity to build and scale cloud infrastructure—including cutting-edge LLM and agentic AI systems—for a breakthrough healthcare platform.
  • Partnership with a world-class team of industry leaders, innovators, technologists, bioscientists, and clinicians from PHP and beyond.
  • A fast-paced, dynamic, and highly collaborative work environment.
  • Competitive salary and benefits package, including participation in our equity program.
  • Expected compensation for this role: £[TBD]–£[TBD] (base + bonus), plus equity and benefits.

Minimum Qualifications

  • 3+ years of experience in cloud infrastructure roles, with a preference for experience in platform and devops teams.
  • Strong hands-on experience with Google Cloud Platform in production environments.
  • Proven use of Terraform (or equivalent IaC) for managing cloud resources at scale.
  • Solid understanding of cloud networking (VPCs, subnets, routing, load balancers) and IAM / identity-based access models.
  • Experience with containerised and serverless workloads (Cloud Run, GKE, Docker).
  • Practical experience implementing security controls in cloud environments (SOC 2, ISO 27001, HIPAA, or similar).
  • Experience operating web-facing, security-sensitive systems.
  • Comfortable working closely with ML, data, and product teams to translate ambiguous requirements into concrete infrastructure solutions.

Preferred Qualifications

  • Experience in healthcare, fintech, or other regulated environments.
  • Exposure to LLM infrastructure, model serving, or agentic AI frameworks in production.
  • Familiarity with data platforms (BigQuery, Airflow, data pipelines).
  • Experience with CI/CD pipelines (GitHub Actions, Cloud Build) and policy-as-code tools.
  • Exposure to observability stacks (OpenTelemetry, Prometheus, Cloud Monitoring).
  • Strong written and verbal communication skills for explaining platform trade-offs to non-platform engineers.
  • Prior experience in a scale-up or startup environment.

About Onsera Health

We are an early-stage health AI company revolutionising cardiometabolic care and population health economics connected to weight loss. Our unique position within the PHP ecosystem provides:

  • Venture track record: A proven track record of success in building biotech and healthcare companies.
  • Deep capital: Funding and resourcing to support deep tech and scientific R&D—and to drive growth.
  • Strategic guidance: Direct access to industry pioneers (including founders of The Medicines Company and Metsera), healthcare experts, strategists (McKinsey/QuantumBlack alumni), and world-class scientific talent.
  • Expert network: Established connections across pharma, payers, and providers.
  • Startup agility: Ownership in the venture, founder mentality, and ground-floor impact.

GCP/AWS Platform Engineer - start-up experience in London employer: Onsera Health

Onsera Health is an exceptional employer, offering a unique opportunity to work at the forefront of healthcare AI innovation in a dynamic and collaborative environment. With a mission-driven focus on addressing critical public health challenges, employees benefit from competitive salaries, equity participation, and the chance to build cutting-edge cloud infrastructure that directly impacts population health management. The company fosters a culture of growth and agility, providing access to industry leaders and a supportive network that empowers team members to thrive in their careers.
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Contact Detail:

Onsera Health Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land GCP/AWS Platform Engineer - start-up experience in London

✨Tip Number 1

Network like a pro! Reach out to folks in the industry, attend meetups, and connect with people on LinkedIn. You never know who might have the inside scoop on job openings or can put in a good word for you.

✨Tip Number 2

Show off your skills! Create a portfolio or GitHub repository showcasing your projects, especially those related to GCP and Terraform. This gives potential employers a taste of what you can do and sets you apart from the crowd.

✨Tip Number 3

Prepare for interviews by brushing up on common technical questions and scenarios related to cloud infrastructure. Practice explaining your thought process clearly, as communication is key when working with cross-functional teams.

✨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, it shows you’re genuinely interested in being part of our mission-driven team.

We think you need these skills to ace GCP/AWS Platform Engineer - start-up experience in London

Google Cloud Platform (GCP)
Terraform
Infrastructure as Code (IaC)
Cloud Networking (VPCs, subnets, routing, load balancers)
Identity and Access Management (IAM)
Containerised Workloads (Cloud Run, GKE, Docker)
Security Controls Implementation (SOC 2, ISO 27001, HIPAA)
Web-facing Systems Operation
Machine Learning Collaboration
Data Pipeline Management
CI/CD Pipelines (GitHub Actions, Cloud Build)
Observability Stacks (OpenTelemetry, Prometheus, Cloud Monitoring)
Strong Communication Skills

Some tips for your application 🫡

Tailor Your Application: Make sure to customise your CV and cover letter for the GCP/AWS Platform Engineer role. Highlight your relevant experience with cloud infrastructure, especially in production environments, and showcase how your skills align with our mission at Onsera Health.

Showcase Your Technical Skills: Don’t hold back on detailing your hands-on experience with Google Cloud Platform and Terraform. We want to see your expertise in managing cloud resources and implementing security controls, so be specific about your achievements and projects.

Communicate Clearly: Use clear and concise language when explaining your experience and skills. Remember, we’re looking for someone who can translate complex technical concepts into understandable terms, especially for non-technical team members.

Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you don’t miss out on any important updates regarding the hiring process.

How to prepare for a job interview at Onsera Health

✨Know Your GCP Inside Out

Make sure you’re well-versed in Google Cloud Platform, especially in production environments. Brush up on your experience with Terraform and be ready to discuss how you've managed cloud resources at scale.

✨Showcase Your Security Savvy

Since this role involves implementing security controls aligned with healthcare requirements, be prepared to talk about your practical experience with SOC 2, ISO 27001, and HIPAA. Highlight specific examples where you enforced security measures in cloud environments.

✨Translate Tech Speak into Layman's Terms

You’ll need to work closely with ML, data, and product teams, so practice explaining complex technical concepts in simple terms. This will show your ability to bridge the gap between engineering and non-engineering teams.

✨Demonstrate Your Startup Mindset

Given the fast-paced nature of a start-up, share experiences that showcase your agility and adaptability. Talk about how you've contributed to building or scaling cloud infrastructure in previous roles, and how you can bring that entrepreneurial spirit to Onsera Health.

GCP/AWS Platform Engineer - start-up experience in London
Onsera Health
Location: London

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