Platform engineer in AI security

Refractal; Greater London; Vor Ort; GBP 60.000 - 115.000; Vollzeit

Benefits dieser Stelle

Equity

Performance bonus

Zusammenfassung

Refractal ищет инженера платформы, ориентированного на продукт, который возьмёт ответственность за ядро платформы и внешние интерфейсы. Вы будете строить API и SDK, связывающие Refractal с системами клиентов, а также сервисы и договорённости событий.

Требуется сильный бэкэнд с HTTP API, опыт Python и FastAPI, знание аутентификации и мультиарендной изоляции. Работа в Лондоне, в офисе, с конкурентной оплатой и опцией бонусов.

Qualifikationen

• Опыт разработки backend с HTTP API; предпочтительно Python и FastAPI.
• Понимание проектирования API, версионирования и совместимости SDK.
• Опыт аутентификации, авторизации, ключей API и мульти-арендной изоляции.

Aufgaben

• Владение ядром платформы от внешних интерфейсов до сервисов и уровней данных.
• Разработка API и SDK для интеграции с системами клиентов и операторами.
• Создание сервисов на FastAPI для решений по политике, доказательствам и тестам.
• Проектирование аутентификации, сессий, ключей API и мульти-арендной изоляции.
• Обеспечение тестирования и развёртывания через Cloud Run и Cloud SQL.

Kenntnisse

Python

FastAPI

HTTP APIs

Observability

Relational databases

Tools

FastAPI

Cloud Run

Cloud SQL

React

Jobbeschreibung

Описание

Refractal is an AI security company building the infrastructure organisations need to defend against autonomous AI threats. 2026 has shown that generally capable intelligence is here. The challenge now is modernising security to stop AI-enabled threats, whether they come from internal agents going rogue or from attackers using AI to become more dangerous.

Задачи

Own the core product platform from its external interfaces through the service and data layers. You will build the APIs and SDKs that connect Refractal to customer systems, along with the services, identity controls, and event contracts behind them. Work directly with the founders and early customers to turn operational security needs into simple, reliable platform interfaces and operator tools.

Own stable, versioned platform APIs and SDKs, including client interfaces, compatibility rules, documentation, and examples.

Build FastAPI services for enforcement decisions, evidence, policies, and red-team results.

Design authentication, sessions, API keys, authorisation, and rigorous multi-tenant isolation.

Build data and event interfaces, real-time streams, and a tamper-evident audit ledger.

Create customer onboarding, policy integration, and operator dashboard workflows.

Own testing and deployment across API compatibility, browser smoke tests, Cloud Run, and Cloud SQL.

Требования

A product-minded platform engineer who makes complex systems clear and predictable and takes ownership from the data model to the customer integration. Strong backend experience with HTTP APIs; Python and FastAPI experience is preferred. Experience with observability, tracing, relational databases, and database migrations.

Sound judgement around API design, versioning, SDKs, and compatibility.

A strong understanding of authentication, authorisation, API keys, and multi-tenant access control.

Good JavaScript and React skills for building operator-facing product surfaces.

The ability to work independently and own technically uncertain customer problems.

Условия

Competitive salary, meaningful equity, and a performance-linked bonus. Direct influence over the product, architecture, engineering standards, and company direction. Real, high-consequence AI deployments rather than purely synthetic environments. London-based, in-person work, with UK Skilled Worker visa sponsorship and support for Global Talent applications.

Compensation Range: £60K - £115K