Principal Engineer

SHIFTKEY sp. z o.o.

Warszawa, Śródmieście
33000 zł/mth.
remote, hybrid
📦 Node.js
MongoDB
Kafka
🐳 Docker
🚢 Kubernetes
🌐 remote
hybrid

Requirements

Expected technologies

Node.js

MongoDB

Kafka

Docker

Kubernetes

Optional technologies

AWS

Operating system

macOS

Our requirements

  • 10+ years of backend software engineering experience, including at least 2+ years in staff, principal, or architect-level roles.
  • Demonstrated experience designing and evolving distributed systems and leading large-scale technical migrations (e.g., monolith to microservices).
  • Strong proficiency in Node.js and production experience with MongoDB, Kafka, and cloud platforms (AWS preferred).
  • Experience operating within Docker/Kubernetes-based environments at scale.
  • Ability to influence cross-team direction, mentor senior engineers, and drive consensus on complex trade-offs.
  • Comfortable communicating architecture to diverse audiences - from hands-on devs to senior executives.
  • Passion for scalable design, performance tuning, and thoughtful abstraction - you think like a systems builder.

Your responsibilities

  • Own the architecture and delivery of core backend systems using modern, service-oriented design patterns.
  • Lead the migration from a monolith to a microservices-based platform, guiding both technical execution and cultural adoption.
  • Establish engineering standards for Node.js, MongoDB, Kafka, AWS, Docker, and Kubernetes, ensuring they scale with the business.
  • Collaborate with engineering squads, leadership, and the business to shape the technical roadmap and evaluate trade-offs for long-term success.
  • Mentor engineers across squads, growing their architecture and design skills while embedding quality and scalability into our culture.
  • Influence cross-functional initiatives, from DevOps integration to platform reliability to developer experience improvements.
  • Stay connected to code while shaping systems holistically - you're not expected to do all the coding, but you're comfortable diving into critical paths when needed.
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Published15 days ago
Expiresin about 1 month
Work moderemote, hybrid
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