Senior Software Engineer in Test IV (Python) - Fixed Term
KrakowRemoteFull-time
AI Summary
Senior Software Engineer in Test IV (Python) focuses on building and maintaining large-scale automated test systems for back-end and event-processing applications, ensuring scalability, reliability, and coverage across OpenX's ad platforms.
About this role
Company at a Glance
OpenX is focused on unleashing the full economic potential of digital media companies. We do this by making digital advertising markets and technologies that are designed to deliver optimal value to publishers and advertisers on every ad served across all screens.
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.
At OpenX Poland, we’re looking for talented, communicative, and curious engineers to join our team in Cracow, Poland.
Currently, we’re looking for a Software Developer in Test.
You will be part of the development team focused on exchange features for connected devices (CTV). Our exchange handles billions of ad requests daily connecting thousands of publishers with demand partners. Each request produces data events that have to be processed to extract business value from them.
Temporary backfill until August 31, 2027.
If you’re:
Open-minded - happy to give & receive feedback, not afraid to fail, and move on
Proactive - always want to find a satisfying solution
Self-organized and self-motivated
We want to talk to you.
Currently, we’re looking for a Software Developer in Test.
You will be part of the development team focused on exchange features for connected devices (CTV). Our exchange handles billions of ad requests daily connecting thousands of publishers with demand partners. Each request produces data events that have to be processed to extract business value from them.
Temporary backfill until August 31, 2027.
If you’re:
Open-minded - happy to give & receive feedback, not afraid to fail, and move on
Proactive - always want to find a satisfying solution
Self-organized and self-motivated
We want to talk to you.
Project:
The Upsiders team develops the auction and revenue mechanics that determine how transactions are priced, processed, and monetized across OpenX. Our work focuses on bid economics across both deals and the open exchange, including pricing, floors, fees, rebates, auction behavior, revenue calculation, and real-time reconciliation. We build systems that help ensure real-time platform calculations reflect actual financial processes and commercial agreements, enabling OpenX to support flexible business models, optimize monetization, and deliver accurate revenue outcomes for buyers, publishers, and internal teams.
The team is using the following technologies:
Frontend: JS/TS, React, Material UI
API: Python, Java
Backend: Java, Go, Erlang, Elixir
CICD: Cloud build, Spinnaker
What we offer:
Key Responsibilities
Required Qualifications
Desired Characteristics
Our benefits (on employment contract):
Skills
Automation FrameworksCI/CDCloud BuildDockerElixirErlangGCPGOJavaJenkinsKubernetesPythonQA PipelinesReactRoot-cause AnalysisSpinnakerSQLTesting StrategyTypeScriptUI Testing
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