Top QA Engineer Jobs in Warsaw

Designs and maintains automated tests for APIs, backend services, and user workflows while performing exploratory, risk-based testing. Partners with developers and product owners on testable requirements, quality strategies, CI/CD quality gates, and release readiness. Analyzes production issues, improves regression coverage and test reliability, and contributes to internal testing tools and frameworks using C#. The role supports portfolio analysis software in an Agile, globally distributed product organization.

Lead hands-on QA automation for complex .NET financial systems. Build C# test frameworks and CI/CD pipelines, conduct functional, API, integration, regression, performance, and load testing, and use AI tools to accelerate coverage. Lead the QA Guild, mentor two testers, collaborate with engineers on testability, investigate production issues, and improve reliability across on-premises and cloud-migrating environments.

Perform manual and automated testing of native Android and iOS applications. Develop test plans, reusable test cases, and documentation; execute test procedures; review plans; identify testing risks; and collaborate with developers, testers, product managers, and stakeholders. The role also involves defining acceptance criteria, maintaining test tools, and improving testing methodologies.

Designs and improves automated testing frameworks for UI, APIs, and distributed services. Writes and reviews Java-based automated tests, improves reliability and CI feedback, investigates systemic failures, and guides automation code quality. Collaborates with engineering teams to improve testability and delivery processes, while evaluating practical AI applications in testing workflows. The role also involves assessing automation architecture, mentoring engineers, and supporting reliable releases for an online casino platform.

Design, maintain, and expand Java-based backend test automation from smoke testing through regression. Integrate stable automated suites into CI/CD pipelines, establish quality gates, and partner with backend developers on end-to-end verification of REST services and microservices. Build and maintain testing infrastructure using tools such as Selenium, TestNG, Maven, Docker, and GitLab CI, while reducing manual QA through automation and AI-assisted development.

Design, build, and maintain automated mobile testing frameworks for iOS and Android using Appium and Java. Develop smoke, regression, and feature-progression suites; integrate tests with GitLab CI and device-cloud platforms; and improve test stability across fragmented mobile environments. Collaborate with developers and QA teams to embed quality early, support automation-first practices, and train QA engineers. Responsibilities also include REST API validation and framework infrastructure maintenance.

Designs, develops, executes, and automates QA tests for NVIDIA Ethernet switch features and releases. Reviews architecture and requirements, performs regression, performance, functional, and security testing, reports and reproduces bugs, investigates root causes, verifies fixes, and develops Python-based automation frameworks and APIs.

Lead quality validation for virtual networking silicon and software by reviewing designs, developing Python and Pytest automation, executing functional, performance, and security tests, debugging defects, validating fixes, and collaborating with R&D throughout feature development. The role requires deep networking protocol expertise, Linux proficiency, and experience testing technologies including BGP, EVPN, VXLAN, QoS, and RoCE.

Own quality across the live sports data platform by refining requirements, identifying risks early, conducting exploratory and structured testing, validating APIs, integrations, workflows, data, sports and betting business rules, and supporting release decisions. Use AI, LLMs, and automation to improve testing efficiency while investigating complex data flows and communicating technical and business risks to stakeholders.

The QA Engineer owns quality throughout the product lifecycle, partnering with Product Managers and Engineers to create testable requirements, identify risks, and validate releases. Responsibilities include exploratory and structured testing of APIs, integrations, workflows, data, and business rules across sports and betting products. The role uses automation, AI, LLMs, and scripting to improve testing efficiency, investigates complex data flows, and advocates for customer-focused quality.

Own QA strategy and hands-on test execution across Salesforce, Conga CPQ, NetSuite, and Workato. Design test plans, execute critical scenarios, coordinate UAT, manage defects, assess release readiness, and maintain QA standards and documentation. Collaborate with distributed engineering, architecture, business analysis, administration, sales, finance, and product teams. Improve testing processes, tooling, coverage, and integration quality while providing clear risk and release-status communication.

As a Quality Assurance Engineer, you will lead game testing, improve quality processes, coordinate with teams, and address game defects.

Performs software verification and quality assurance across customer applications. Responsibilities include reviewing technical documentation, building software in multiple languages, diagnosing build issues, conducting manual and automated end-to-end testing, validating requirements, documenting bugs, and collaborating with clients and cross-functional teams. The role also contributes to improved verification processes and requires familiarity with development environments, databases, Git, build tools, APIs, and cloud technologies.

Develop and maintain automated tests for a fintech lending application hosted on AWS. Responsibilities include creating test scripts, plans, and cases; coordinating testing; tracking defects; performing regression testing; implementing QA procedures; and monitoring quality metrics. The role requires performance, integration, system, and cloud testing experience, along with CI/CD pipeline integration and programming proficiency, preferably in Python.

Execute end-to-end, API, integration, regression, and release testing for AI voice journeys across markets. Prepare test data, support UAT, extend automated suites, evaluate conversational AI behavior, document defects, and track them to resolution. The role requires software QA experience, voice or conversational AI testing, API testing, basic Python or JavaScript/TypeScript automation, and troubleshooting through logs and transcripts.

Lead QA strategy and automation for voice AI systems spanning speech recognition, LLMs, tools, integrations, and speech output. Own multilingual testing, deterministic and non-deterministic behavior evaluation, UAT, defect and risk management, release recommendations, and stakeholder communication. Mentor QA engineers and validate voice quality across accents, noise, latency, interruptions, customer journeys, and multiple markets.

Develop and automate tests for credit risk decisioning systems, assess algorithm and policy changes, monitor production behavior, and analyze technical implementation to identify and resolve errors. The role supports credit policy and risk assessment strategy development within a fintech environment and collaborates with risk, anti-fraud, and business stakeholders.

Architect and maintain automation frameworks, develop UI and API tests, integrate testing into CI/CD pipelines, and improve testing infrastructure. Define quality metrics, analyze results, mitigate testing risks, and report product stability. Lead code reviews, guide team members, support onboarding, automate manual testing, and improve release workflows within an Agile environment.

Lead data quality and QA automation for backend systems, data pipelines, ETL/ELT processes, warehouses, and transformations. Define testing strategy, build scalable automation frameworks, validate data with SQL, integrate tests into CI/CD, establish QA standards, manage release readiness, and use AI tools to accelerate test development and debugging.

Lead quality assurance across DataGrip’s shared ecosystem, coordinating testing across teams and components. Investigate complex integration issues, analyze logs and user reports, define risk-based test strategies, improve QA processes, and guide release decisions. The role requires testing distributed systems, databases, APIs, CI/CD environments, and cross-product integrations while collaborating with developers, DevOps, and product teams.

Own end-to-end quality for Xsolla’s Web3 smart wallet on an Ethereum-compatible ZK rollup. Test account abstraction, signing, smart contracts, token standards, transaction lifecycle, counterfactual deployment, indexer synchronization, wallet security, and partner integrations. Build Playwright and TypeScript automation, use chain forking and transaction tracing, validate testnet-to-mainnet releases, configure AI coding tools, and mentor QA engineers.

Develop and maintain automated front-end and back-end tests using C#, TypeScript, Playwright, and API testing tools. Plan tests, monitor results, run performance testing, support UAT, estimate QA work, and help define automation strategy. Coach QA colleagues, contribute to Scrum processes, and explore AI-assisted development and testing practices.

Performs manual exploratory testing and develops automated UI and API tests to ensure product quality. Designs test cases, investigates defects, analyzes CI/CD test failures, verifies data integrity, and documents testing procedures. Collaborates with developers and stakeholders throughout the development lifecycle, contributes to QA process improvements, and supports reliable product delivery using tools such as Playwright, Git, Docker, and observability platforms.

Perform exploratory and regression testing for complex mortgage workflows, build and maintain Playwright and TypeScript end-to-end and API automation, manage CI test suites, investigate production issues using observability tools, and own release readiness. Create test plans, data, and actionable defect reports while validating financial business logic, database data, and edge cases. Collaborate remotely with developers and use AI tools to improve QA coverage.

Owns quality verification for AI-assisted migration of legacy desktop financial applications to modern web solutions. Responsibilities include designing test strategies, defining traceable behavioral specifications, developing automated quality gates, testing REST APIs and web front ends, validating data against legacy systems, measuring test effectiveness, conducting acceptance testing, and delivering knowledge transfer to client engineering teams.