Senior Backend Engineer (Platform & Architecture) – AppSec Solution

Location: Poland

Description

OX Security is securing the AI-driven SDLC from prompt to production. We’re building the next generation of security technology for a world where AI is changing how software is built, deployed, and attacked.

We’re growing fast and looking for a Senior Backend Engineer to join our AppSec Solution group, home of OX’s core platform, and play a key role in shaping the architecture and infrastructure the whole product runs on.

This is a high-impact, cross-functional role where you’ll work closely with our Software Architect, team leads across R&D, DevOps and Product, helping us build the foundations for what comes next, including running AI agents inside the product at scale.

If you’re independent, opinionated and love turning a design on a whiteboard into a production system, we’d love to meet you.

Requirements:

What You’ll Be Doing

  • Own cross-company infrastructure and architecture projects end-to-end with our Software Architect, from design through adoption across teams
  • Build and own the shared foundations and standards our services are built on
  • Lead the evolution of our data layer as our largest customers scale
  • Build the platform foundations for running AI agents inside the OX product
  • Drive cost optimization from the application side, including how our services scale on Kubernetes
  • Raise the reliability and observability bar across our services
  • Lead how R&D builds with AI, so AI-assisted development is fast and meets our engineering standards
  • Lead technical alignment with team leads, DevOps, and Product: bring a clear point of view and move cross-team initiatives forward
  • Act as an internal partner for engineering teams: review designs, find reuse, and raise the architectural bar across R&D
  • Stay hands-on: write platform code and land changes across teams