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Principal QA Engineer

🇵🇱 Poland

Management

Python

Design

Project Management

SQL

Testing

Principal QA Engineer

from 🇵🇱 Poland

Sphera is a leading global provider of enterprise software and services that enables companies to manage and optimize their environmental, health, safety and sustainability. Our mission is to create a safer, more sustainable and productive world.

Sphera is a portfolio company of Blackstone, a U.S.-based alternative asset investment company that focuses on private equity, technology and innovation, and more. Blackstone businesses succeed through strong partnerships, a personalized approach and a commitment to exceptional performance with uncompromising integrity. Sphera and Blackstone are leaders in the Environmental, Social and Governance (ESG) space.

We are guided by our core values of Customer Centricity, Accountability, Bias to Action, Innovation, and Collaboration. These values help us recruit the right talent to join our rapidly expanding team of around the globe. It is important to us that each and every Spherion is not only eager to challenge themselves and knows how to get work done but is an awesome addition to our company culture.

We are seeking a Principal QA Engineer to lead and elevate our Quality Assurance function, driving excellence across both manual and automated testing practices. In this role, you will guide and mentor a talented QA & Test team, ensuring high-quality delivery through strong test strategy, rigorous quality standards, and continuous process improvement.

You will play a key role in shaping product quality by reviewing requirements and design documents, defining comprehensive test strategies, and building robust automation frameworks using modern tools and technologies. Beyond execution, you will establish and refine QA processes, define meaningful quality metrics, and champion best practices across the engineering organization.

The ideal candidate brings deep hands-on QA expertise, proven leadership experience, and a passion for solving complex problems. With a strong background in test automation, performance testing, and scripting, ideally within a Python, Playwright, and JMeter environment, you are equally comfortable diving into technical detail and guiding strategic quality initiatives.

This is a great opportunity for someone with a growth mindset who thrives in fast-paced environments, stays ahead of industry trends, and is passionate about building high-performing teams and delivering exceptional software quality.

Responsibilities 

  • Guide, coordinate and coach the QA & Test team in their day-to-day operations.  
  • Communicate and Track any quality risks, gaps or issues
  • Review requirements, specifications, and technical design documents to provide timely and meaningful feedback 
  • Create detailed, comprehensive, and well-structured testing documentation 
  • Estimate, prioritize, plan, and coordinate testing activities 
  • Design, develop, and execute automation scripts 
  • Perform thorough regression testing when bugs are resolved 
  • Develop and apply testing processes for new and existing products 
  • Investigate the causes of non-conforming software and implement solutions 
  • Define quality metrics and implement measurements to determine test effectiveness, testing efficiency, and measure the overall quality of the Product
  • Establish, document, and enhance QA processes
  • Stay up-to-date with new testing tools and strategies 

Skills 

  • You are a true team player 
  • You are a first class problem solver with a keen eye for details 
  • You are a good listener and have strong communication skills 
  • You have a strong work ethic, a real “can do” attitude 
  • You have a Growth Mindset. You’re constantly striving to learn new things and improve 
  • You follow industry news, regularly tinker with new technologies, and read books and blogs to keep your skills sharp 

Your profile 

  • Bachelor’s or Master’s degree in Computer Science, Engineering, or relateddiscipline  
  • Minimum of 5 years of quality assurance engineering experience 
  • Minimum of 3 years of QA Team Lead or QA Manager experience
  • Strong knowledge of software QA methodologies, automation tools, and processes 
  • Experience in writing clear, concise, and comprehensive test plans and test cases 
  • Hands-on experience with both white box and black box testing 
  • Hands-on experience with automated testing tools 
  • Solid knowledge of SQL and scripting 
  • Experience with performance testing 
  • Tech Stack: Python, Playwright, JMeter

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Sphera is proud to be an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all colleagues.

This job description is intended to convey information essential to understanding the scope of the job and the general nature and level of work performed by job holders within this job. This job description is not intended to be an exhaustive list of qualifications, skills, efforts, duties, responsibilities or working conditions associated with the position.

by @maxrusakovic