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Senior Backend Engineer – AppSec Solution Group

Comm-IT · Warsaw, Poland, Poland · Remote

100100

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Senior Backend Engineer – AppSec Solution Group at Comm-IT. We’ll keep it in your applied jobs, so you can see it later and be warned before applying to the same employer twice.

Description

We're growing fast and looking for a

Senior Backend Engineer

to join our

AppSec Solution group

, home of company 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 We're Looking For

  • 7+ years of backend engineering experience, with architect-level depth in system design
  • Strong production experience with Node.js and TypeScript
  • AI-first: you build with AI tools every day, adopt new AI technologies early, and look for ways AI can improve developer experience and system performance
  • Deep experience with databases at scale: data modelling, performance, and evolving a data layer in production
  • Proven hands-on experience in platform engineering and infrastructure, including shared foundations adopted across teams
  • Hands-on experience with Kubernetes and a strong understanding of DevOps practices
  • Track record of leading cross-team technical projects and influencing without formal authority
  • Clear written communication: design docs and technical reviews

Nice to have

  • Practical understanding of LLMs and AI agents
  • Experience with cloud cost optimization
  • Background in cybersecurity or SaaS

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