Currency

Senior Software Engineer (JS/TS)

7 766 - 8 654 USDNet per month - B2B
5 894 - 6 587 USDGross per month - Permanent
JavaScript

Senior Software Engineer (JS/TS)

JavaScript

al. 29 Listopada 20, Kraków

OpenX

Full-time
Permanent, B2B
Senior
Remote
7 766 - 8 654 USD
Net per month - B2B
5 894 - 6 587 USD
Gross per month - Permanent

Tech stack

    Polish

    C1

    English

    C1

    JavaScript

    advanced

    TypeScript

    advanced

    React

    advanced

    AWS/GCP

    regular

    Databases

    regular

    Docker

    nice to have

    Kubernetes

    nice to have

Job description

Our exchange handles billions of ad requests daily connecting thousands of publishers with demand partners. It’s fully containerized running in the cloud in multiple regions across the world. Ads from our systems can be seen in your favored mobile game, web page, maybe TV in the future. That’s the place where each millisecond matters.

The team is using the following technologies:

Frontend: JS/TS, React, Material UI

API: Python, Node.js

CICD: Cloudbuild, Spinnaker 

On a daily basis, we are using the Scrum framework with an open-minded attitude to adapt the process to our needs. Within the team, you will have the opportunity to work closely with a full-stack team of SWEs and SDETs focusing on different domains (both frontend and backend), as well as be a part of the UI Guild focusing on making impactful changes to our tools and processes.


Key responsibilities:

  • Lead engineering team to deliver high-quality end-to-end products and features.

  • Design high-performance, distributed, low-latency systems

  • Architect, create, and deliver new features and functionality

  • Work with Product to drive the requirements, and own the project end-to-end

  • Work with Product and UX teams to bring consumer-grade user experience and design to the

  • enterprise

  • Work with Engineering and Product teams distributed across multiple locations

  • Analyze and improve efficiency, scalability, and stability of servers and processes

  • Think long-term and be unsatisfied with band-aids

  • Identify unnecessary complexity and remove it


Required Qualifications:

  • 5+ years of experience with building SaaS applications using JavaScript/TypeScript (including Node.js)

  • 1 + years of experience as a Tech Lead or Team Lead of an Engineering Team

  • Experience with databases system design, RDBMs, or NoSQL

  • Experience with Amazon Web Services or Google Cloud Platform

  • Experience working in digital media, marketing technology, or advertising technology is a big plus

  • Communicative Polish and English


Published: 23.09.2025
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Senior Software Engineer (JS/TS)

7 766 - 8 654 USDNet per month - B2B
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Senior Software Engineer (JS/TS)

al. 29 Listopada 20, Kraków

OpenX

7 766 - 8 654 USDNet per month - B2B
5 894 - 6 587 USDGross per month - Permanent
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