Backend Engineer, AI & Security Platform

Worky; United Kingdom; On-site; GBP 90,000 - 125,000; Full time

Job summary

Abnormal AI is seeking a Software Engineer to help scale our backend and ML platform, including AI-powered agents and production systems. You will work with senior engineers to improve reliability, reduce latency, and accelerate feature delivery.

In this role you will design, build, and own components, contribute to technical design, and participate in reviews and on-call rotations, with a strong emphasis on clean, testable code and system robustness.

Qualifications

• 3-5 years of industry experience as a Software Engineer with production backend shipping
• Solid Python backend proficiency and production systems experience
• Experience with system design and building reliable, scalable apps
• Working knowledge of relational databases and modern data storage technologies
• Exposure to service-to-service communication (gRPC, Kafka) and caching (Redis) is a plus
• Experience with AWS cloud services (S3, RDS) and deployment practices
• Familiarity with containerization and orchestration (Docker, Kubernetes, Helm) is a plus
• Understanding of service health, monitoring, and incident response practices
• Comfortable writing technical documentation and contributing to design discussions

Responsibilities

• Design, build, and iterate on scalable backend and ML systems, APIs, frameworks, and internal tools.
• Own well-scoped features and components with guidance from senior engineers.
• Contribute to stability, reliability, and operational excellence of critical systems.
• Write clean, testable, and resilient code with attention to edge cases and performance.
• Contribute to design documents and participate in design discussions.
• Participate in code and design reviews, and contribute to on-call rotations.
• Collaborate to design and build LLM-powered features and agentic workflows as part of the platform.
• Integrate LLM APIs and agent frameworks into backend services with focus on reliability, cost, latency, and evaluation.

Skills

Python

System design

Relational databases

gRPC/Kafka

Cloud & AWS

Docker/Kubernetes

Helm

Redis

Monitoring & incident response

Documentation & design discussions

Tools

AWS

Docker

Kubernetes

Helm

Kafka

Redis

gRPC

OpenAI / GenAI APIs

Job description

Abnormal AI is seeking a Software Engineer to help scale our backend and ML platform, including AI-powered agents and production systems. You will work with senior engineers to improve reliability, reduce latency, and accelerate feature delivery.

In this role you will design, build, and own components, contribute to technical design, and participate in reviews and on-call rotations, with a strong emphasis on clean, testable code and system robustness.