
Senior Backend Engineer – AppSec Solution Group
Comm-IT · Warsaw, Poland, Poland · Remote
All reasons
In its favour
- Posted today
- Still listed on the employer's own board
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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