.
Senior Software Engineer Python @ OpenX
  • Kraków
Senior Software Engineer Python @ OpenX
Kraków, Kraków, Lesser Poland Voivodeship, Polska
OpenX
7. 11. 2025
Informacje o stanowisku

At OpenX, we have built a team that is uniquely experienced in designing and operating high-scale ad marketplaces, and we are constantly on the lookout for thoughtful, creative executors who are as fascinated as we are about finding new ways to apply a blend of market design, technical innovation, operational excellence, and empathetic partner service to the frontiers of digital advertising.

Project:You will have a chance to work in some aspects of agile application development, including our highly efficient and available serving platform, and your opinions will be considered in certain phases of product development, starting from requirements to validation and deployment. You will assist other engineers to ensure that our processes are defined, documented, tested, and easy to use.

The team is using the following technologies:

Frontend: JS/TS, React, Material UI
API: Python, Node.js
Backend: Java, Go, Erlang, Elixir
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 API Guild focusing on making impactful changes to our tools and processes.

The team is using the following technologies:
Frontend: JS/TS, React, Material UI
API: Python, Node.js
Backend: Java, Go, Erlang, Elixir
CICD: Cloudbuild, Spinnaker 


  • 5+ years of similar position working experience in Python
  • Experience with database system design, RDBMs (MySQL, Postgres), or NoSQL
  • Experience with JavaScript - nice to have
  • Experience with one of the Cloud - GCP or AWS
  • Experience working in digital media, marketing technology, or advertising technology is a big plus
  • Experience in REST API or GraphQL

At OpenX, we have built a team that is uniquely experienced in designing and operating high-scale ad marketplaces, and we are constantly on the lookout for thoughtful, creative executors who are as fascinated as we are about finding new ways to apply a blend of market design, technical innovation, operational excellence, and empathetic partner service to the frontiers of digital advertising.

Project:You will have a chance to work in some aspects of agile application development, including our highly efficient and available serving platform, and your opinions will be considered in certain phases of product development, starting from requirements to validation and deployment. You will assist other engineers to ensure that our processes are defined, documented, tested, and easy to use.

The team is using the following technologies:

Frontend: JS/TS, React, Material UI
API: Python, Node.js
Backend: Java, Go, Erlang, Elixir
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 API Guild focusing on making impactful changes to our tools and processes.

The team is using the following technologies:
Frontend: JS/TS, React, Material UI
API: Python, Node.js
Backend: Java, Go, Erlang, Elixir
CICD: Cloudbuild, Spinnaker 

,[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 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, analyze existing solutions Requirements: RDBMS, Python, Cloud, FastAPI, GraphQL, TypeScript, SQL, REST Tools: Jira, Confluence, GitHub, GIT, Cloud Build, Agile, Scrum. Additionally: Small teams, International projects, Private healthcare, Lunch card, Multikafeteria, Life & group insurance, Flat structure, Free coffee, Canteen, Bike parking, Playroom, Shower, Free snacks, Free beverages, Free lunch, Free parking, In-house trainings, Modern office, No dress code.

  • Praca Kraków
  • Kraków - Oferty pracy w okolicznych lokalizacjach


    112 353
    15 955