Lead Backend Engineer — AI-Driven, Scalable Cloud

CommIT; Warszawa; On-site; PLN 210,000 - 320,000; Full time

Job summary

CommIT is seeking a Backend Team Lead to drive technical execution and engineering excellence in a fast-growing cybersecurity focused team. You will lead a hands-on engineering effort across multiple streams, shaping design decisions and delivering scalable, high-quality backend services.

You’ll stay hands-on with Node.js, AWS, and MongoDB while developing people, coordinating with product and customers, and ensuring reliable, end-to-end delivery in a fast-paced, AI-enabled environment.

Qualifications

• 6+ years of hands-on software development experience.
• 3–5 years in a technical leadership or Team Lead role.
• Strong backend experience with Node.js and AWS.
• Experience with MongoDB and a cloud-based, scalable architecture.
• Ability to lead across multiple workstreams and collaborates with global teams.
• Excellent communication with technical and non-technical stakeholders.

Responsibilities

• Own team execution across multiple workstreams with high-quality delivery.
• Drive sprint planning, prioritization, and capacity planning.
• Coordinate cross-team efforts and remove blockers.
• Develop the team through coaching and feedback.
• Lead technical design of scalable, reliable backend features.
• Stay hands-on with cloud-based development (Node.js, AWS, MongoDB).
• Drive code quality through reviews and best practices.
• Partner with Product to shape features from concept to release.
• Engage with customers in technical sessions and own domain ownership.

Skills

Node.js

AWS

React

Python

MongoDB

Team Leadership

System Design

Distributed Teams

Communication

Job description

CommIT is seeking a Backend Team Lead to drive technical execution and engineering excellence in a fast-growing cybersecurity focused team. You will lead a hands-on engineering effort across multiple streams, shaping design decisions and delivering scalable, high-quality backend services.

You’ll stay hands-on with Node.js, AWS, and MongoDB while developing people, coordinating with product and customers, and ensuring reliable, end-to-end delivery in a fast-paced, AI-enabled environment.