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Senior API Platform Architect

United Kingdom
Visa Sponsorship Relocation
This Job is No Longer Active This position is no longer accepting applications
AI Summary

Design and own the architecture of the customer-facing API platform, including authentication, routing, and multi-tenancy. Build and scale the orchestration layer to handle millions of concurrent requests with full isolation. Set technical standards and lead a growing platform engineering team.

Key Highlights
Own architecture and technical bar for API platform
Build DNS routing, load balancing, autoscaling, and multi-tenancy
Lead reliability and product engineers in early-stage environment

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Key Responsibilities
Authenticate customer requests and route to execution backend
Manage request lifecycle, routing, and state
Implement DNS routing, load balancing, and autoscaling
Ensure multi-tenancy and isolation between customers
Handle per-workflow scaling and deployment
Set design standards, code review processes, and architectural decisions
Build core systems and grow platform engineering team

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Technical Skills Required
API design Distributed systems Multi-tenancy Autoscaling

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Benefits & Perks
Competitive salary
Equity & ownership
Private healthcare

Job Description

The last era of AI scaled on a single bet: bigger models, more identical chips, more data. As problems grow more complex and the requirements of intelligence more diverse, that bet is breaking down. Real-world problems are heterogeneous: no single model or chip can solve them alone. The next era of AI requires heterogeneity at the infrastructure level - diverse models on diverse chips, each with distinct strengths, co-evolving into systems of capability that move the Pareto frontier of what is possible. That's what we are building.
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Job Overview
Posted Jul 23, 2026
Employment Full-time
Experience Not Applicable
Location United Kingdom
Category Programming
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