Lead Platform Engineer in London

Department: Engineering, reporting to the CPTO

Salary: £90,000 - £115,000 (depending on experience and seniority)

Benefits & Culture: Lottie’s careers page here. Lottie’s tech careers page here

Equity: A very generous EMI share offering.

Holiday: 26 days + bank holidays.

Mission: Elevate later life for everybody and build the care sector of the future.

Office Policy: Hybrid with two core office days or remote.

Office Location: London Bridge, London, UK or remote, Europe.

The Opportunity: We're looking for a Lead Platform Engineer to own the infrastructure and security foundation that Lottie's engineering teams build on. This is a broad, high-ownership role. You'll be the person who keeps our cloud infrastructure running well, starts to own our security posture, and looks for ways to improve how our engineers experience the platform underneath them every day. It's not a narrow specialism - we want someone who is energised by the full scope, not just one slice of it.

Lottie's infrastructure is modern, simple and intentional. Our services run on Kubernetes (EKS), deployed following GitOps practices with GitHub Actions and ArgoCD, and monitored with OpenTelemetry-powered logs, traces and metrics. Our cloud surface is split across AWS for compute and GCP for data (BigQuery), with infrastructure managed as code through Terraform. We prioritise pragmatism, stability and solving real problems over technology for technology's sake, and this key role owns the future direction of the platform, observability, security and infrastructure as a whole.

You'll join as the sole owner of this function, which means real autonomy and real accountability. The work is consequential: Lottie is scaling fast, our products carry serious responsibility for the families and care providers who rely on them, and the platform needs to be in safe hands.

What you'll be doing:

• Own Lottie's cloud infrastructure end-to-end - reliability, performance, cost, observability and developer experience
• Champion an observability culture where engineers own what they ship - giving teams the dashboards, alerting and tooling to genuinely run their own services, not just deploy them
• Set the guardrails for how we use AI safely - establishing security best practices and ways of working that let teams move fast with AI tooling without creating risk
• Lead our information security accreditations, including ISO 27001 and Cyber Essentials - treating them as a chance to genuinely strengthen our posture, not a box-ticking exercise
• Take genuine ownership of our security posture: auditing where we are, identifying gaps, and making pragmatic improvements over time
• Work closely with engineering teams to understand what they need from the platform and build things that actually help them move faster
• Evaluate and improve our IT and vendor setup, including potential managed service arrangements

We want someone who ties every infrastructure decision back to what it unlocks for the business - not building for the sake of technical interest.

We think you'll be a great fit if…

• You're breadth-first: you'd rather own a wide area well than be the deepest possible expert in one narrow slice
• You have solid experience in cloud infrastructure, DevOps, or platform engineering - hands-on with GCP, AWS, or both
• You know Kubernetes deeply - not just deploying to it, but running it in production: scaling, debugging, upgrades, and the operational realities that only come from owning clusters yourself
• You have real observability expertise - you've built monitoring, alerting and tracing that engineers actually use, and you know the difference between collecting metrics and creating insight
• You're comfortable owning security even if it's not your deepest expertise today - you're curious about it, you know what good looks like, and you're willing to learn
• You come from a startup or cloud-native environment and you understand the difference between building for scale and over-engineering
• You have good judgment about what problems are worth solving - you're not chasing technical perfection for its own sake
• You can work well with engineers across teams; you build platform that helps people, not just infrastructure that's technically correct

Sound like you but not quite 100%? Apply anyway — we're looking for judgment and potential, not a perfect spec match.

This role isn't for you if…

• Our mission to elevate later life care doesn’t resonate with you.
• You want to go deep in one specialism and leave the rest to someone else
• Security feels like a different team's problem
• You're most comfortable in a large, structured engineering org rather than a fast-moving startup
• You'd rather build technically impressive things than pragmatically useful ones

Lottie's Interview Process:

• Talent Screen with Alice Rooke, Talent Lead (20 minutes, remote)
• Interview with Julien Lavigne du Cadet, CPTO (45 minutes, remote)
• Two one hour technical interviews with members of Lottie engineering team (2 hours, remote)
• Behavioural Interview with one of Lottie’s Engineering Leaders (45 minutes, remote)
• Final interview with Will Donnelly, Co-Founder & CEO (30 minutes, in person)

Candidate Experience:

The majority of feedback will be given via email and we try our very best to give specific and constructive feedback where possible.

• Application Review: You will be informed of the outcome but will not receive specific feedback.
• Talent Screen: You will be informed of the outcome but will not receive specific feedback.
• Interview with Julien: If you are unsuccessful, you will receive constructive feedback via email.
• Technical & Behavioural Interviews: If you are unsuccessful, you will receive constructive feedback via email and will be offered a debrief call with our Talent Lead.
• Final Interview: For final-stage candidates who are not offered the role, we will provide feedback live via a phone call and offer written feedback.

Meet Lottie:

Founded with a mission to build the care sector of the future, Lottie is creating the AI operating system for social care — designed to fix care search for families and unlock profitability for care providers. Launched in London in July 2021, Lottie has raised over £25m from tier 1 venture capital funds (Accel and General Catalyst) and is widely recognised as one of Europe's fastest growing tech companies. Most recently, Lottie was the acclaimed winner of Deloitte Fast 50, LinkedIn Top Startups and Startups 100.

As of today, Lottie offers three core products and services, including:

• Lottie (B2B2C Marketplace) - Free service that helps families find the UK’s best care homes and home care services. Think Rightmove for care.
• Found by Lottie (B2B Vertical SaaS) - AI-native CRM software supporting care providers to effectively manage their enquiries, occupancy and finances.
• Seniorcare by Lottie (B2B Vertical SaaS) - Employee benefit helping companies deliver outstanding eldercare support to their employees.
• Eliza by Lottie (B2B Vertical SaaS) AI agents that handle care home enquiries - so no family goes unanswered.

Why Lottie?

• Career Opportunity - A chance to own platform engineering at one of the UK's fastest growing startups, with real scope to shape the function as the company scales.
• Mission - Tech for good that aims to build the care industry of the future and positively impact millions of people's lives. Care is one of the final remaining large consumer industries yet to be disrupted by technology.
• Investors - Series A backed having raised £25m+ from tier 1 VCs including Accel and General Catalyst.
• Global Opportunity & Scalability - Be part of a company solving a real problem that every family around the world faces at some point in their life.
• People - Join a kind, talented and mission driven team that loves coming to work every day.
• Culture - Excellent employee compensation/benefits, hybrid office policy and outstanding company culture with a 5/5 Glassdoor score.
• Award Winning - Acclaimed winner of LinkedIn's 2024 Top Startups, named the UK's number one startup for 2025, and voted one of the Best Places to Work by The Sunday Times 2026.

We want to create an inclusive environment that celebrates the diversity of our people whilst enabling them to do the best work of their careers. We are committed to ensuring that all our people processes are equitable. All applicants will be considered for employment without attention to ethnicity, religion, sexual orientation, gender identity, family or parental status, national origin, veteran, neurodiversity status or disability status.

If you require reasonable accommodations during the application or interview process, please let us know at Alice.Rooke@lottie.org