Salary
$73k – $81k per year (gross)
Location
Remote (Poland)
Seniority
Senior · 5+ years exp
Employment
Full-Time
Overview
Company
Impact
Profile match
OpenX is an independent supply-side platform specializing in ad tech, enabling publishers and advertisers to achieve better ad buying and selling experiences with a focus on addressability, transparency, and sustainability. Established in 2008, OpenX provides omnichannel targeting capabilities across all channels, including CTV, and integrates seamlessly with various data sets and identity types. As the first Net-Zero verified adtech company, OpenX emphasizes responsible media practices, helping clients reduce their environmental impact while supporting social initiatives.
At OpenX Poland, we’re looking for talented and curious engineers to join our amazing team in Cracow, Poland. Currently, we’re looking for a Software Developer Engineer IV - Test who will join our UI/API Platform team.
Frontend: JS/TS, React, Material UI
API: Python
Backend: Java, Go, Erlang, Elixir
CICD: Cloud Build, 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 other SDETs focusing on different domains (both frontend and backend), as well as be a part of the QA Guild focusing on making impactful changes to our tools and processes.
What we offer:
- Employment contract (22 595 - 25 254 PLN gross/monthly) OR B2B (181 - 202 PLN net/hourly)
- Working with the newest technologies such as Cloud Computing (GCP)
- Challenges at work that are difficult to find anywhere else!
- Solving important problems in a scale
- Joining a company that is growing and scaling
- Flexible working hours & remote work option
Key responsibilities
- Test large-scale data processing systems
- Involved in all phases of product development, starting from requirements to validation and deployment
- Analyze and improve efficiency, scalability, and stability of applications
- Work in a focused and nimble team that collaborates on common problems across products and across focus areas
- Own components, processes, and workflows that demand professionalism, excellent communication, teamwork, and documentation skills
- Create, maintain, and improve automation test suites/frameworks
- Monitor and maintain QA CI pipelines, collaborate on CD enablement
- Conduct root cause analysis of issues and provide solutions for better coverage and maintainability
- Effectively communicate and being a crucial member of both the project teams and QA organization
- Be exposed to a broader set of problems, which allows for fast career growth and proximity to abundant technical problems
Required qualifications
- 5+ years of test automation experience
- Proficiency in Java and ability to improve, debug, modify and maintain an automation framework codebase
- Openness to working with Python/JavaScript
- Experience in using test design techniques
- Experience using CI/CD tools like Jenkins or Spinnaker
- Experience with Google Cloud Platform, k8s, and Docker
- Excellent troubleshooting skills to triage complex issues
- Experience operating in an agile environment
- Communicative Polish and English languages
- Bachelor’s degree in Computer Science or equivalent degree
Our benefits (on employment contract):
- Annual performance bonus
- Tax-deductible system due to copyright protection: 75%
- Private health care for you and your family (covered by OpenX)
- Private life and travel insurance
- MultiKafeteria program
- Training: access to the LinkedIn Learning platform and Tech workshops
- Holiday Allowance
- Pension scheme (PPK from PZU)
- Additional paid day off
- Free parking lot
- Access to peer-to-peer recognition platform
- Monthly work-from-home allowance and one-time payment when you join us to help you set up your home office
- We celebrate team members' important personal milestones (vouchers, gifts)
Free account
Stop reading job ads. Get the ones that fit.
One free account turns this page into a shortlist built around your stack, your level and your pay.
Match on every job. Stack, seniority, pay and location, scored against your profile.
373,261 open roles. Read straight off company career pages, refreshed every day.
Unlimited applications. Every one you send is tracked in one place, on-site or on a company board.
3 tailored CVs a month. Rewritten for the exact job you are applying to. Included free.
Free forever. No card. Under a minute.
Your match
How well do you fit this role?
Two answers are enough for a real match. No account needed.
Check my fit
Answers stay in this browser until you create an account.
Recommended for you based on this role
Similar stack
Same company
In your city
Senior Lead Java React Full Stack Engineer
1 hour ago
≈ $25k – $65k per year (Estimated) • In office • Full-Time • 10+ years exp • India
Java
SQL
Java
Hibernate
Spring Boot
Spring Framework
Databases
Apache Kafka
AI/ML
Airflow
DevOps
AWS
Azure
Azure DevOps
CI/CD
Docker
GCP
GitHub
GitHub Actions
Incident Management
Jenkins
Kubernetes
Rest API
Apply
Senior Quality Engineer
1 hour ago
≈ $17k – $43k per year (Estimated) • Remote/Hybrid • Full-Time • 4+ years exp • Bachelor's Degree • Hyderabad
Node JS
Python
SQL
JavaScript
Databases
Databricks
Google BigQuery
Snowflake
AI/ML
Anomaly Detection
Frontend
GraphQL
React.js
DevOps
AWS
Azure
Azure DevOps
CI/CD
GCP
Git
GitHub Actions
Jenkins
GitHub
Analytics
ETL/ELT
QA
Cypress
JMeter
k6
Locust
Playwright
Postman
Pytest
Selenium
Apply
Lead Engineer - AI Engineering
1 hour ago
≈ $29k – $69k per year (Estimated) • In office • Full-Time • 3+ years exp • Master's Degree • Bengaluru
Go
JavaScript
Node JS
Python
TypeScript
AI/ML
AI Agents
Fine-tuning
LangChain
LangGraph
LLM Guardrails
Model Context Protocol
NLP
OpenAI
Prompt Engineering
PyTorch
RAG
Reinforcement Learning
TensorFlow
DevOps
AWS
Docker
GCP
Kubernetes
Apply
≈ $26k – $65k per year (Estimated) • In office • Full-Time • 5+ years exp • Bachelor's Degree • Pune
PowerShell
Python
AI/ML
AI Agents
LLM
LLM Guardrails
Model Context Protocol
DevOps
AWS
Azure
CI/CD
GCP
Git
Rest API
Splunk
Cybersecurity
Crowdstrike
Microsoft Entra ID
Microsoft Sentinel
MITRE ATT&CK
Okta
SentinelOne
Apply
≈ $25k – $66k per year (Estimated) • In office • Full-Time • 8+ years exp • Bengaluru
Bash
C++
Node JS
Python
TypeScript
JavaScript
Node JS
Nest.JS
Databases
PostgreSQL
AI/ML
Time Series Forecasting
DevOps
Amazon EC2
AWS
CI/CD
Docker
Docker Compose
Grafana
Ubuntu
IoT
MQTT
OPC UA
Apply
Senior Test Automation Engineer IV
1 day ago
$73k – $81k per year (gross) • Remote • Full-Time • 5+ years exp • Bachelor's Degree • Kraków
Elixir
Erlang
Go
JavaScript
Python
Frontend
Material UI
React.js
DevOps
CI/CD
Docker
GCP
Jenkins
Kubernetes
Spinnaker
Apply
Business Intelligence Data Analyst
8 days ago
$94k – $110k per year • Remote • Full-Time • 1+ year exp • Bachelor's Degree
Python
SQL
Databases
Google BigQuery
Apply
Big Data Engineer IV
2 months ago
$75k – $84k per year (gross) • Remote/Hybrid • Full-Time • 8+ years exp • Bachelor's Degree • Kraków
Java
Python
Scala
SQL
Databases
Google BigQuery
AI/ML
Airflow
dbt
Spark
DevOps
AWS
CI/CD
Docker
GCP
Kubernetes
Apply
Data Scientist III
3 months ago
$144k – $161k per year • Remote • Full-Time • 5+ years exp • Bachelor's Degree • New York
Java
Python
SQL
Databases
Google BigQuery
AI/ML
Feature Store
Kubeflow
PyTorch
TensorFlow
Time Series Forecasting
Vertex AI
DevOps
AWS
Azure
GCP
Analytics
A/B Testing
Apply
This is one of many
373,261 more open roles from verified company boards, updated every day.

