Senior QA Engineer (Hybrid)

Porto, Portugal

About Us:

A global SaaS leader for seamless digital document workflows, Nitro offers a suite of solutions for PDF, eSigning, identity verification and analytics supported by a best-in-class customer success and change management team. With more than 3 million licensed users and 13,000+ business customers across 157 countries, we serve 67% of the Fortune 500.

How We Work:

We aim to create an environment where talented individuals are empowered to excel. How we collaborate, innovate, and engage with one another is important to us. Our work is driven by 5 key principles:

One team, One mission
Our collective dedication to Nitro's mission defines us. Together, we are building an environment where everyone feels like a valued part of something bigger than themselves.
Own it
We take full ownership of our actions and decisions. We empower one another to lead with confidence, creativity, and a solutions-focused mindset.
Accountable to our customers
We are dedicated to our customers and take our commitments seriously. We do what we say we are going to do.
Excellence in execution
Driven by passion and precision, we exemplify excellence in our delivery with innovative, top-quality results.
Be bold, fail fast, learn faster
We learn as we grow, dare to try, and bravely question. We are not chasing perfection but forever iterating towards it.

These guiding values shape our approach to work, fostering a culture where everyone is inspired to contribute their best.

The Role

Nitro is seeking a QA Engineer to transform extensive Java UI and C++ unit test suites for our core product into a modern and performance testing platform that serves our engineering teams at scale.

At Nitro, our ultimate stakeholder is always our customer. Your goal will be to enable our high-velocity engineering organization to advance the product rapidly while ensuring it is free errors and embodies the high standards our customers expect.

You will own all phases of this project – from solution design to adoption and later iterations. This task will lead you to partner closely with Nitro Pro engineers to identify pain points. You will also collaborate cross-functionally with QA team to balance gaps in coverage and infrastructure engineers to evolve our CI/CD pipeline and deployment capabilities.

What you'll do

Own and modernize our test framework: Transform legacy test suites to improve reliability, performance, and maintainability
Expand platform coverage: Ensure tests accurately reproduce customer environments across multiple operating systems and configurations
Optimize execution: Maximize test suite performance through parallelization, intelligent test selection, caching, and efficient resource utilization
Scale CI/CD pipelines: Integrate test infrastructure seamlessly with build and deployment processes to shorten release cycles
Drive reliability: Implement monitoring, alerting, and self-healing capabilities to maintain high availability
Surface actionable insights: Enhance error diagnostics so engineers can resolve issues quickly and move with confidence
Set technical direction: Evaluate and adopt modern tools, frameworks, and practices that advance our testing capabilities

What we're looking for

5+ years as a QA engineer with at least 2 years in a senior or infrastructure-focused role, with expertise delivering and growing large-scale test frameworks
Deep technical expertise modernizing legacy test suites, with proven ability to work with both UI testing frameworks and low-level unit tests
Strong programming skills in Java and C++, able to read, debug, and refactor test code and infrastructure
Systems engineering experience: Understanding of operating systems (Windows, macOS, Linux) and build systems (CMake)
CI/CD proficiency: Extensive experience with CI/CD platforms (Jenkins, GitHub Actions, GitLab CI), containerization, and infrastructure as code
Performance and resource optimization: Proven ability to profile, analyse, and optimize test execution through parallelization, distributed testing, and resource management
Framework expertise: Experience with test automation tools (JUnit, TestNG, Google Test, Selenium) and evaluating new technologies
Problem-solving mindset: Strong ability to diagnose complex issues, identify root causes, and implement durable solutions
Project leadership: Autonomy to drive initiatives from conception through delivery, with accurate estimation and timeline management
Collaboration skills: Excellent communication with cross-functional teams including engineering, infrastructure, and QA
Agile experience, comfortable with Git, GitHub, JIRA, and Confluence
Fluent in English

Nice to have

Experience with desktop application test infrastructure
Performance testing, load testing, and benchmarking experience
Test observability and monitoring tools
Infrastructure engineering or SRE background
Open-source testing framework contributions

Why Nitro?
Along with our regular benefits and programs (including health, dental, vision, and retirement as standard), we are also very proud to offer a few additional initiatives to future Nitronauts:

Hybrid Work
Our team embraces the hybrid work model, appreciating its blend of flexibility and structure. We combine three days of in-person collaboration at our global offices in Toronto, Dublin, Antwerp, Porto, and Melbourne with the convenience of two days of remote work each week.

Benefits:
Nitro provides all employees with a comprehensive benefits package that includes health insurance, dental and vision coverage, and wellness perks. We also offer pension/401k matching, along with many other country-specific benefits.

Nitro strongly encourages applications from everyone regardless of race, religion, colour, national origin, gender, sexual orientation, age, marital status or disability status. We provide an accessible candidate experience and invite you to request any accommodations or adjustments throughout the interview process and beyond.

#LI_EC #LI-Hybrid