R

Senior Systems Engineer (AI Security Infrastructure)

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This Job is No Longer Active This position is no longer accepting applications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

Design, build, and secure distributed systems for AI agent enforcement, multi-tenancy, and threat detection at Refractal. Own end-to-end infrastructure, observability, and cloud operations while collaborating with founders and early customers. Requires deep expertise in latency-critical, fault-tolerant systems with a focus on security, integrity, and scalability.

Key Highlights
Own end-to-end security-critical systems for AI agent enforcement, tracing, and multi-tenancy in production
Work directly with founders and early customers to shape technical direction and product roadmap
Build low-latency, fault-tolerant pipelines for event normalization, risk evaluation, and enforcement decisions

Searching for Development & Programming roles that provide visa sponsorship? Connect with international employers through Development & Programming Jobs with Visa Sponsorship opportunities actively seeking talented professionals.

Key Responsibilities
Design and operate the runtime enforcement pipeline for AI agent activity, ensuring low-latency decision-making with predictable failure behavior
Build and maintain observability systems (tracing, logging, metrics) to correlate multi-agent activity across services and tools
Develop tamper-evident evidence stores and audit ledgers for compliance and forensic integrity
Enforce multi-tenancy isolation using PostgreSQL Row-Level Security, access controls, and automated testing
Architect and secure cloud infrastructure (GCP: Cloud Run, Cloud SQL, IAM, Secret Manager) with CI/CD pipelines
Threat-model infrastructure, harden containers, and define trust boundaries for customer traffic and model services
Collaborate with product management to oversee software dashboard UX and design decisions
Technical Skills Required
Distributed Systems PostgreSQL (with Row-Level Security) Cloud Infrastructure (GCP)

Explore our comprehensive directory of visa sponsorship jobs from employers worldwide who are ready to sponsor talented international professionals.

Benefits & Perks
Competitive salary and performance-linked bonus
Meaningful founding equity
UK Skilled Worker visa sponsorship

Interested in opportunities specifically in United Kingdom? Discover our dedicated Visa Sponsorship Jobs in United Kingdom page featuring roles from top employers in this location.

Nice to Have
Open-source infrastructure contributions or technical write-ups
Experience with sandboxing, subprocess isolation, or supply-chain integrity controls
Model-serving or GPU inference deployment expertise
UX design or product management involvement

Job Description

About Us

Refractal is building security infrastructure for autonomous systems. Tomorrow’s attacks will use adaptive reasoning agents; cyber defenders need the right tools for adaptive defence. Refractal builds the Security Context Graph, which allows defenders to reason more effectively about risk and enforce controls.

Want the full job description? Read the complete details on LinkedIn, the original posting.
Continue on LinkedIn

This is a short excerpt. All rights to the full description belong to its original publisher.

See Jaabz jobs first on Google 1 tap · free · in AI Overviews Jaabz is on your Google Manage Preferred Sources
Job Overview
Posted Aug 13, 2026
Employment Full-time
Experience Entry level
Location United Kingdom
Category Programming
Company refractal
Keep exploring

Similar Jobs

Explore other opportunities that match your interests

Hidden company

Log in to see location

Premium

Staff Implementation Engineer (Systems IP)

Log in free to see the details

Visas, Work Permits & Legal Insights

Stay informed about visa types, work permits, and immigration updates for international professionals.

Browse all articles

Subscribe to our newsletter

New visa sponsorship, relocation and remote tech jobs, delivered to your inbox.