Principal Platform Engineer
- Level
- Principal
- Work type
- Hybrid · London
Not stated in the posting: salary, visa.
Open. First seen 2 October 2026.
About the role
Neko Health's standard text
Mission
Neko is redefining what prevention means, from treating illness when it arrives, to sustaining health before it's ever at risk. Our mission: make data-driven, preventative care accessible to more people, before symptoms appear.
In a single, non-invasive visit under an hour, proprietary technology and direct clinical care combine to deliver personalised, actionable insights. It's a team that thinks in 10x, not 10%. Every role here plays a part in building a world where prevention is the norm, and where your work genuinely helps people live longer, healthier lives.
The Role
This is a 0→1 build. You'll own the architecture, build and rollout of Neko's internal AI developer platform, shaping how our engineers design, ship and operate software through agentic, AI-assisted workflows.
It's a hands-on technical leadership role. You'll be the person setting long-term direction for AI agents, tooling and the systems underneath them, while also doing the work. The expectation is that what you build gets used across teams and meaningfully changes how engineering happens here.
What You'll Deliver
In the first 6 months
- A clear architectural direction for the platform
- Initial components shipped and adopted by early teams
- Measurable improvements to developer speed, reliability and autonomy
- Genuine organic adoption across engineering, driven by value not mandate
By month 12
- A substantive shift toward agentic, engineer-led development workflows
- Platform scaled beyond pilot groups to multiple teams
- Clear ownership models for agents, tooling and supporting systems
- Long-term architecture defined and moving toward maturity
What We're Looking For
Must-haves
- Proven experience building and shipping an internal developer platform, hands-on, not advisory
- A strong track record leading agentic or AI-assisted development work that engineers actually use day-to-day
- Real backend engineering depth with production systems, recent Java or C# strongly preferred
- Experience rolling out platform tooling to 20-30+ developers with meaningful adoption
- Expertise with workflow engines such as AWS Step Functions, Azure Durable Functions, Temporal, Conductor or Dagster
- The ability to drive change through influence and credibility, not positional authority
- 10-15+ years of engineering experience with substantial platform ownership
Nice to have
- Full-stack exposure, though backend depth is the priority
- Background in product-led SaaS or organisations with strong internal developer tooling culture
What this role asks for
Particular to this role
Java
Rare in Neko Health's other 46 open postings.
Standard for DevOps / SRE / cloud roles
AWS · Azure
Common in DevOps / SRE / cloud postings at any company.
75% of this description is written for the role. The rest is Neko Health's standard text, folded away below.
Read against Neko Health's other open postings on this site.
The team: Software Engineering HIRES STEADILY
This role is one of 9 open in Software Engineering. 4 were posted in the last 30 days and the oldest in March: a team that hires all year rather than one being built.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
Azure (6 of 9), C# (5 of 9), JavaScript (4 of 9), Azure DevOps (3 of 9), Figma (3 of 9), Kotlin (3 of 9), Next.js (3 of 9)
OTHER ROLES ON THIS TEAM
- Lead Software Engineer - Medical OS posted Oct 15
- Lead Product Engineer, Engagement posted Oct 2
- Lead Product Engineer, Growth posted Oct 2
- Design Engineer, Member Experience posted Oct 2
- Information Security Engineer Lead posted Aug 19
- Lead Software Engineer posted Aug 14
- Lead Software Engineer - Medical OS posted Jul 15
- Director, Software Engineering (Platform) posted Apr 28
From the team and dates on Neko Health's own job board.
Salary context
7 other open postings titled Principal Platform Engineer state a salary: median USD 180,000 to USD 230,000 a year.
Similar jobs
- Senior Software Engineer (.NET) at CreateFuture
Shares 4 skills: C#, Java, Azure… · same country - Cloud Architect - Azure at UBDS Group
Shares 3 skills: C#, Azure, AWS · same city - Automation Platform Engineer at Jagex: The RuneScape Company
Shares 4 skills: C#, Java, Azure… · same country - Senior Software Engineer - Normalization Platform at Truveta
Shares 4 skills: C#, Java, Azure… - Senior Developer .NET C# at Datacom
Shares 4 skills: C#, Java, Azure… - Medical Learning Designer at Neko Health
Also at this company
Is this your posting and you want it taken down? Email info@careerholo.com.