SDET API Engineer

🏢 Summary: B2B hybrid contract for an experienced SDET to design and maintain automated test frameworks for a major Swiss financial client, with strong focus on API and UI automation in Java. The role involves building BDD frameworks, implementing CI/CD pipelines, and performing database testing within enterprise systems. 🗂️ Requirements: Minimum 6 years of pure test automation experience, At least 18 months of API automation using RestAssured with Java, At least 4 years of UI automation using Selenium with Java, At least 2 years of BDD automation using Cucumber, At least 2 years of database testing experience, Experience building BDD automation frameworks with Java and Selenium, Experience with CI/CD pipeline implementation, Strong SQL knowledge, Hands-on experience with Oracle, Postgres or MongoDB, Experience with TestNG or JUnit, Experience with Maven or Ant, Experience with Git, Experience with Jira or Rally, Strong Java proficiency (minimum 7/10), Recent continuous automation experience without long breaks 📃 Skills: Java, Selenium, RestAssured, Cucumber, BDD, SQL, Oracle, Postgres, MongoDB, TestNG, JUnit, Maven, Ant, Git, Jira, Rally, CI/CD, SpringBoot, JavaScript, Playwright 🏢 Description: Software Development Engineer in Test We are looking for SDET Engineer on behalf of our client to join to the leader from the largest Swiss financial holding company. Contract: B2B Work Mode: Hybrid 2/3 days from Krakow office Mandatory SDET Skills – Minimum 6 Years of relevant experience (6 years of total IT experience should not be sent to us unless all 6 year is automation completely) as per mandatory skills: Rest Assured with Java and Selenium with Java BDD Cucumber CI/CD Pipeline implementations SQL/DB Testing Experienced in building a BDD test automation framework using Java and Selenium. Well versed with Automated API testing using Rest Assured with Java Experience using TestNG, Junit in Test automation frameworks. Experience in creating Manual and Automated tests and executing them as per the requirement Well versed with analyzing application logs and debugging the test case failure. Experience in database testing and should be well versed with SQL. Hands-on experience in using databases e.g. Oracle, Postgres, MongoDB. Experience using GIT or similar tools. Well versed with Build management tools like Maven or Ant. Experience in using Requirement and Test Management tools like Rally, Jira Bonus skills: Knowledge of Spring Boot, JavaScript, and hands-on experience with Playwright. Handson in API Automation by using Rest Assured with Java for at least 18 months Handson in UI Automation by using Selenium with Java for at least 4 years Handson in Automation by using BDD Cucumber for at least 2 Years DB Testing for at least 2 years Comfort level in using Java at least 7 out of 10 Handson Automation experience should be latest and not towards early stage of career – without breaks. 📩 If you’re interested and meet the qualifications, please send your CV to Alina Pchelnikova at alina.pchelnikova@dcvtechnologies.co.uk

🏢 Summary: B2B contract role for a Senior SDET to support API and trading systems testing within a middle office risk platform handling high-volume FX, equities, and derivatives trades. The position focuses on designing automated test frameworks and performing functional and performance testing in an investment banking environment. The role also involves collaboration with cross-functional teams and working with modern CI/CD and containerized environments. 🗂️ Requirements: 4–8+ years of experience in test automation or manual testing in banking or financial services, Strong Java programming skills, Hands-on experience with Selenium and Cucumber, Experience with JMeter, Postman, and SoapUI, Understanding of trade lifecycle and OTC derivatives, Knowledge of EMIR, Dodd Frank, FRTB regulations, Experience with CI/CD pipelines, Practical knowledge of SQL, Experience with Unix scripting, Experience using Git, Exposure to Kubernetes and Docker, Experience with cloud-based microservices environments 📃 Skills: Java, Selenium, Cucumber, JMeter, Postman, SoapUI, SQL, Unix, Git, Jenkins, Azure, Kubernetes, Docker, Microservices, EMIR, DoddFrank, FRTB 🏢 Description: Senior SDET – Investment Banking (API & Trading Systems) Location: Warsaw - Flexi-Hybrid Contract Type: B2B Rate: Up to 2000 PLN/day We’re working with a leading global investment bank on a high-impact project to upgrade their middle office risk system. This platform supports millions of trades daily across FX, equities, and derivatives, and the team is seeking a skilled SDET to join their expanding testing function. What You’ll Be Working On • API testing for middle office trading systems • Designing and implementing automated test frameworks (Java, Selenium, Cucumber) • Functional and performance testing of trading applications • Collaborating with developers, BAs, and traders to validate business logic and trade lifecycle flows • Exploring GenAI/LLM tools for future testing innovation What We’re Looking For • 4–8+ years of experience in test automation OR manual testing, ideally in banking or financial services • Strong Java skills and hands-on experience with Selenium, Cucumber, JMeter, Postman, and SoapUI • Solid understanding of the trade lifecycle, OTC derivatives, and regulatory frameworks (EMIR, Dodd Frank, FRTB) • Experience with CI/CD pipelines (Jenkins, Azure DevOps), SQL, Unix scripting, and Git • Exposure to Kubernetes, Docker, and cloud-based microservices environments • Bonus: Experience with GenAI tools or smart test design using LLMs

🏢 Summary: Hybrid SDET role focused on designing and maintaining scalable test automation frameworks using Java and Selenium. The position involves integrating automated tests into CI/CD pipelines and performing API, integration, and end-to-end testing within an Agile environment. The role emphasizes strong development practices to ensure high-quality software delivery. 🗂️ Requirements: Strong programming experience in Java, Hands-on experience with Selenium WebDriver, Experience designing automation frameworks, Experience with TestNG or JUnit, Experience with CI/CD tools, Experience testing web applications, Experience testing APIs, Understanding of Agile/Scrum, Strong debugging skills 📃 Skills: Java, Selenium, WebDriver, TestNG, JUnit, Jenkins, GitLab, CICD, API, Agile 🏢 Description: We are seeking a skilled SDET (Software Development Engineer in Test) with strong experience in Java and Selenium to join our engineering team in Warsaw. This role requires a hybrid presence with two days per week onsite in the Warsaw office. The ideal candidate will have a strong development mindset and experience building scalable test automation frameworks to ensure high-quality software delivery. Key Responsibilities Design, develop, and maintain test automation frameworks using Java and Selenium Write clean, maintainable, and scalable automated test code Integrate automated tests into CI/CD pipelines Collaborate closely with developers, QA engineers, and product teams to ensure quality throughout the development lifecycle Perform API, integration, and end-to-end testing Identify, document, and track defects using issue tracking tools Participate in Agile ceremonies including sprint planning, reviews, and retrospectives Contribute to continuous improvement of testing strategies, tooling, and processes Required Skills & Experience Strong programming experience in Java Hands-on experience with Selenium WebDriver Experience designing and implementing automation frameworks Experience with testing frameworks such as TestNG or JUnit Familiarity with CI/CD tools (e.g., Jenkins, GitLab CI, or similar) Experience testing web applications and APIs Understanding of Agile/Scrum development environments Strong problem-solving and debugging skills Good communication skills in English Nice to Have Experience with REST API testing (e.g., REST Assured) Knowledge of BDD frameworks such as Cucumber Familiarity with Docker or containerized environments Experience with cloud platforms (AWS, GCP, or Azure) Work Model Hybrid: 2/3 days onsite in Warsaw , remaining days remote What We Offer Competitive salary or contract rate Flexible hybrid working model Opportunity to work with modern automation technologies Collaborative, international engineering environment

🏢 Summary: Senior SDET role focused on building and maintaining scalable UI, API, and backend automation frameworks for enterprise applications. The position involves ensuring software quality through end-to-end, integration, and regression testing integrated into CI/CD pipelines. The role requires close collaboration with development teams in an Agile environment to drive automation excellence and continuous testing. 🗂️ Requirements: 3+ years experience in software testing and automation, Strong expertise in Java, Strong expertise in Selenium, Strong expertise in Cucumber, Strong expertise in SerenityBDD, Backend automation experience with Java and SpringBoot, Experience in API automation testing using Java, Strong SQL skills, Experience with MySQL, Experience with REST APIs, Experience integrating tests into CI/CD pipelines, Experience with Git, Understanding of Agile/Scrum methodologies 📃 Skills: Java, Selenium, Cucumber, SerenityBDD, SpringBoot, SQL, MySQL, REST, CI/CD, Git, Agile, Scrum 🏢 Description: 🚀 SDET (UI, API & Backend Automation) 📍 Hybrid | 1 day per week in the office Gdańsk or Warsaw Are you passionate about automation, software quality, and building scalable testing frameworks? We're looking for a Senior SDET who thrives on delivering high-quality software through innovative testing strategies and automation excellence. You'll play a key role in ensuring the reliability, performance, and quality of enterprise applications while collaborating closely with developers, product teams, and QA engineers. 💡 Your Mission 🧪 Test Automation Design, develop, and maintain robust automated test frameworks. Create end-to-end, regression, integration, and functional test suites. Improve test coverage and automation efficiency across the platform. Promote shift-left testing practices within development teams. 🖥️ UI Automation Develop and maintain automated UI test suites using: Selenium Cucumber Serenity BDD Create reusable automation components and frameworks. Ensure application quality across multiple browsers and devices. 🔌 API Automation Design and execute API automation tests using Java. Validate REST APIs, microservices, and backend integrations. Perform functional, integration, and regression testing. ☕ Backend Automation Develop backend automation solutions using Java and Spring Boot. Validate business logic, workflows, and service integrations. Support continuous testing initiatives across distributed systems. 🗄️ Database Testing Validate application data and business rules using MySQL. Create and execute SQL queries for backend verification. Ensure data integrity and consistency across systems. ⚙️ CI/CD & Quality Engineering Integrate automated testing into CI/CD pipelines. Collaborate with DevOps and development teams to improve release quality. Analyze test results and drive continuous improvement initiatives. 🤝 Collaboration Work closely with Developers, Product Owners, Business Analysts, and QA teams. Participate in Agile/Scrum ceremonies. Contribute to quality strategies, standards, and best practices. 🎯 Must-Have Skills ✔️ 3+ years of experience in software testing and automation ✔️ Strong expertise in: Java Selenium Cucumber Serenity BDD ✔️ Backend automation experience with: Java Spring Boot ✔️ API automation testing using Java ✔️ Strong SQL and MySQL database testing skills ✔️ Experience with: REST APIs CI/CD pipelines Git ✔️ Understanding of Agile/Scrum methodologies ⭐ Nice to Have Experience with Jenkins, GitLab CI, or Azure DevOps Experience with performance testing tools Knowledge of Docker and Kubernetes Exposure to cloud platforms (AWS, Azure, GCP) Fintech or payment industry experience Open-source contributions or technical blogging 🎁 What You'll Get ✨ Opportunity to work on enterprise-scale applications ✨ Modern testing tools and automation frameworks ✨ Hybrid work model (Gdańsk or Warsaw) ✨ Collaborative engineering culture ✨ Career growth and continuous learning opportunities ✨ Influence on automation strategy and quality standards 🚀 Ready to build world-class automation solutions and help deliver exceptional software quality? Join us and become part of a team where quality is built into every stage of development.

🏢 Summary: Mid-level Software Development Engineer in Test role focused on backend/API automation within a complex Treasury product in the financial/payments domain. The position emphasizes high test automation coverage, CI/CD integration, and end-to-end quality ownership in an agile environment. Hybrid B2B contract with immediate start and long-term extension potential. 🗂️ Requirements: 3–4 years of experience in test automation, Strong Python for automated testing, Solid API/backend testing with Pytest, Experience integrating automated tests in CI/CD pipelines, Ability to debug test failures and perform root cause analysis, Linux command-line proficiency, Basic SQL for data validation, Experience testing REST or microservices architectures 📃 Skills: Python, Pytest, CI/CD, Jenkins, Linux, SQL, REST, Microservices, Playwright, GenAI 🏢 Description: 📌 We’re looking for an experienced Software Development Engineer in Test to join a fast-paced, high-impact project in the financial / payments domain. Contract: B2B 📍 Work Mode: Hybrid 3 days from Warsaw/Gdansk office Contract duration: Minimum 6 months and will be extended Expected start date: Immediate Job Description: Mid-senior test automation engineer who can take ownership of quality for a complex, backend-heavy product area in Treasury Test Engineering. The role is automation-first: the person should be comfortable driving a high automation ratio (roughly 80% automation / 10–20% manual where needed) and continuously improving reliability, coverage, and feedback speed in CI/CD. Technical skills (must-have): • Strong Python for test automation; writes clean, maintainable test code and utilities . • Solid API/backend testing skills with Pytest ( fixtures, parametrization, assertions, test organization); can design robust automated coverage for business flows, including integration/interface testing with partner systems/teams. • CI/CD experience (e.g., Jenkins or similar): can integrate tests into pipelines, troubleshoot flaky runs, improve reporting, and keep pipelines healthy. • Comfortable debugging failures end-to-end (logs, root cause analysis, reproductions) and using standard debugging tools; can analyze issues and validate assumptions quickly. • Linux familiarity (shell, environment/debugging basics) and SQL basics for data validation and troubleshooting. Roles and Responsibilities post joining: • Ownership & proactivity: spots gaps in coverage, stability, or process and drives improvements without being asked; follows through to completion. • Clear communication: writes concise updates, defects, and test notes; can explain failures and risk clearly to engineers and stakeholders. • Collaboration: works effectively with Dev/DevOps/Product in agile teams, participates in design discussions and contributes to quality strategy. • Quality-first mindset: challenges assumptions, prioritizes customer impact and reliability, and balances speed with robustness. Qualification and experience: Mid Level – 3–4 years of relevant experience Mandatory skills: • Strong Python for test automation • Solid API/backend testing skills with Pytest • CI/CD experience • Linux familiarity Desired skills: • UI test automation with Playwright (page objects, stable selectors, handling async/flakiness) – UI is a plus, backend/API is priority • Experience testing modern services (REST/microservices) • Practical use of GenAI tools to accelerate test development while maintaining quality Benefits ✅ Stable long-term cooperation with opportunity for extension Opportunity to work with modern technologies in an international environment Professional growth and continuous development opportunities Participation in challenging and impactful projects 📩 If you’re interested and meet the qualifications, please send your CV to Alina Pchelnikova at alina.pchelnikova@dcvtechnologies.co.uk

🏢 Summary: Long-term engagement for a senior SDET / Automation Engineer responsible for designing and maintaining automated test frameworks in a Java-based environment. The role focuses on Selenium WebDriver automation, BDD frameworks, API and database testing, and CI/CD integration. Position requires strong hands-on technical expertise and onsite presence in Krakow three days per week. 🗂️ Requirements: 7+ years of automation experience, Strong hands-on experience with Selenium WebDriver using Java, Experience with BDD frameworks: Cucumber, JUnit or TestNG, Experience building automation frameworks: Page Object Model, Data-Driven, Experience in functional testing and full test lifecycle, Strong knowledge of Core Java, Experience in API testing using Postman, Experience with build tools: Maven or Gradle, Experience with CI/CD integration using GitLab, Experience in database testing using SQL and Oracle, Strong debugging skills using logs, DB queries and file system, Availability to work onsite in Krakow 3 days per week 📃 Skills: Java, Selenium, WebDriver, Cucumber, JUnit, TestNG, SQL, Postman, Maven, Gradle, GitLab, Oracle, CICD, PageObjectModel, DataDriven, Automation, API, Database 🏢 Description: Dear Consultant, We are hiring an experienced SDET / Automation Engineer for a long-term engagement in Krakow. 🔹 Requirements 7+ years automation experience Strong hands-on experience with Selenium WebDriver (Java only) BDD frameworks: Cucumber, JUnit/TestNG Automation frameworks: Page Object Model / Data-Driven Functional testing & full test lifecycle Core Java, JUnit, SQL API testing (Postman) Build tools: Maven / Gradle CI/CD integration (GitLab) Database testing (SQL / Oracle) Strong debugging using logs, DB queries, file system 🔹 Nice to Have JMeter DevOps / Cloud exposure Regulatory compliance Agile / Scrum 📍 Krakow – 3 days onsite mandatory 📩 Send CV to marcillina.tietjen@dcvtechnologies.co.uk

🏢 Summary: SDET role focused on designing and developing scalable test automation frameworks using Java and Selenium in a hybrid model (2 days onsite in Kraków). The position involves integrating automated tests into CI/CD pipelines and ensuring software quality through API, integration, and end-to-end testing in an Agile environment. The role emphasizes strong development skills and close collaboration with engineering teams. 🗂️ Requirements: Strong programming experience in Java, Hands-on experience with Selenium WebDriver, Experience designing and implementing automation frameworks, Experience with TestNG or JUnit, Experience with CI/CD tools, Experience testing web applications and APIs, Understanding of Agile/Scrum, Ability to perform API, integration, and end-to-end testing, Strong debugging skills, English proficiency 📃 Skills: Java, Selenium, WebDriver, TestNG, JUnit, Jenkins, GitLab, CI/CD, REST, Cucumber, Docker, AWS, GCP, Azure, API 🏢 Description: We are seeking a skilled SDET (Software Development Engineer in Test) with strong experience in Java and Selenium to join our engineering team in Kraków. This role requires a hybrid presence with two days per week onsite in the Kraków office. The ideal candidate will have a strong development mindset and experience building scalable test automation frameworks to ensure high-quality software delivery. Key Responsibilities Design, develop, and maintain test automation frameworks using Java and Selenium Write clean, maintainable, and scalable automated test code Integrate automated tests into CI/CD pipelines Collaborate closely with developers, QA engineers, and product teams to ensure quality throughout the development lifecycle Perform API, integration, and end-to-end testing Identify, document, and track defects using issue tracking tools Participate in Agile ceremonies including sprint planning, reviews, and retrospectives Contribute to continuous improvement of testing strategies, tooling, and processes Required Skills & Experience Strong programming experience in Java Hands-on experience with Selenium WebDriver Experience designing and implementing automation frameworks Experience with testing frameworks such as TestNG or JUnit Familiarity with CI/CD tools (e.g., Jenkins, GitLab CI, or similar) Experience testing web applications and APIs Understanding of Agile/Scrum development environments Strong problem-solving and debugging skills Good communication skills in English Nice to Have Experience with REST API testing (e.g., REST Assured) Knowledge of BDD frameworks such as Cucumber Familiarity with Docker or containerized environments Experience with cloud platforms (AWS, GCP, or Azure) Work Model Hybrid: 2/3 days onsite in Kraków , remaining days remote What We Offer Competitive salary or contract rate Flexible hybrid working model Opportunity to work with modern automation technologies Collaborative, international engineering environment

🏢 Summary: Senior SDET / Java QA Automation Engineer role focused on building and maintaining scalable test automation frameworks for UI, API, and database testing in a hybrid model. The position involves hands-on automation using Java-based tools, integrating tests into CI/CD pipelines, and ensuring high software quality through robust engineering practices. 🗂️ Requirements: 6+ years of QA Automation / SDET experience, Strong hands-on experience with Java test automation, Experience with Selenium using Java, Experience with Rest Assured using Java, Experience with BDD Cucumber, Experience implementing and maintaining CI/CD pipelines, Strong knowledge of SQL and database testing, Experience with TestNG and/or JUnit, Hands-on experience with Git, Hands-on experience with Maven or Ant, Experience with Oracle, PostgreSQL, or MongoDB, Familiarity with Jira or Rally 📃 Skills: Java, Selenium, RestAssured, Cucumber, SQL, TestNG, JUnit, Git, Maven, Ant, Oracle, PostgreSQL, MongoDB, Jira, Rally, CICD 🏢 Description: 📍 Location: Kraków, Poland 🏢 Work Model: Hybrid (3 days per week in the office) We are looking for an experienced Senior SDET / Java QA Automation Engineer to join a global team focused on delivering high-quality software through robust test automation practices. This role is ideal for a hands-on automation professional with strong expertise in Java, Selenium, Rest Assured, and BDD Cucumber , who enjoys building scalable automation frameworks and contributing to quality engineering initiatives. Key Responsibilities Design, develop, and maintain automated test frameworks using Java and Selenium Build and execute automated API tests using Rest Assured Create and maintain UI, API, and Database test suites Integrate automation solutions into CI/CD pipelines Analyze test results, application logs, and troubleshoot failures Perform database validation and data integrity testing using SQL Collaborate closely with developers, business analysts, and QA teams to ensure product quality Required Skills & Experience ✔ 6 years+ of dedicated QA Automation / SDET experience ✔ Strong hands-on experience with Java-based test automation ✔ Rest Assured with Java ✔ Selenium with Java ✔ BDD Cucumber ✔ Experience implementing and maintaining CI/CD pipelines ✔ Strong knowledge of SQL and Database Testing ✔ Experience with TestNG and/or JUnit ✔ Hands-on experience with Git , Maven , or Ant ✔ Experience working with databases such as Oracle, PostgreSQL, and MongoDB ✔ Familiarity with test and requirement management tools such as Jira and Rally Nice to Have ⭐ Spring Boot ⭐ JavaScript ⭐ Playwright ⭐ Experience building automation frameworks from scratch

🏢 Summary: The offer is for a Java Test Developer to work on a mission-critical fintech investment platform, focusing on automated UI and API testing. The role involves building and maintaining test automation frameworks using Java-based tools and collaborating closely with cross-functional teams. Strong emphasis is placed on API testing and modern development practices, including CI/CD and AI-supported workflows. 🗂️ Requirements: Minimum 2 years of experience in test automation with Java, Experience in UI test automation using Selenium or Selenide, Experience in API testing using Rest Assured, Experience with Git version control, Experience with Jenkins for CI/CD, Fluent Polish and English, Availability for hybrid work (3 days per week in Kraków office), Residence in Poland 📃 Skills: Java, Selenium, Selenide, RestAssured, Jenkins, Git, Cucumber, JMeter, API, AI 🏢 Description: Our team is looking for a Java Test Developer to join a project for a leading US fintech. You will have the opportunity to work on mission‑critical financial functionalities supporting an investment platform. From a technical perspective, we use Java and Selenide/Selenium for UI testing, Rest Assured for API and backend testing, and Jenkins for CI/CD. API testing is a key part of the project, so solid experience in this area is highly valued. We value forward‑thinking engineers. Experience using AI tools in your day‑to‑day development workflow (e.g., for code optimization, test generation, or overall efficiency) is highly appreciated and will be considered a strong asset. If you are looking for an interesting and challenging next project with a great team — apply! Your tasks Testing a complex application with multiple integrated components Test automation of UI and API using Java, Selenide/Selenium, and Rest Assured Working with internal banking systems, including workflow modules, calendars, and administrative panels Task‑oriented, project‑based mode (code reviews, collaborative problem‑solving) Close collaboration with team members, including Developers and Business Analysts Requirements At least 2 years of experience in test automation using Java Fluent proficiency in both Polish and English Experience and willingness to grow in technologies such as Java, Selenium (Selenide), Cucumber, Rest Assured, Git, and Jenkins Availability for hybrid work — 3 days per week in the office in Kraków Residing in Poland required Nice-to-have requirements Previous work in banking projects Knowledge of tools like Cucumber, Jenkins, JMeter Experience incorporating AI tools into daily development workflow (e.g., for code optimization, test generation, or efficiency gains) is highly regarded What we offer Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People If you want to work on systems with high operational significance — apply now!

🏢 Summary: Senior SDET role focused on building and maintaining Python-based automated test frameworks for API-driven, microservices applications in the fintech/payments domain. The position emphasizes API testing, CI/CD integration, security and compliance validation, and quality engineering within Agile teams. The role combines hands-on automation development with responsibility for test strategy and continuous quality improvement. 🗂️ Requirements: 5+ years of experience in software testing and test automation, Strong hands-on experience with Python and PyTest, Experience building automated test frameworks from scratch, Extensive experience testing REST APIs, microservices, and distributed systems, Experience with Postman, Swagger/OpenAPI, API mocking, and contract testing, Experience integrating automated tests into Jenkins and Git-based CI/CD pipelines, Strong knowledge of integration, regression, and performance testing, Experience validating data using SQL with PostgreSQL, MySQL, or Oracle, 2+ years of experience in fintech, payments, banking, or financial services, Knowledge of PCI DSS and regulated financial systems testing 📃 Skills: Python, PyTest, REST, Microservices, Postman, Swagger, OpenAPI, Mocking, Jenkins, Git, CI/CD, SQL, PostgreSQL, MySQL, Oracle, Integration, Regression, Performance, PCI-DSS 🏢 Description: 🚀 SDET (API Testing | Python) 📍 Hybrid | 1 day hybrid in Gdańsk or Warsaw Are you passionate about quality engineering, test automation, and building robust testing frameworks? Do you enjoy breaking systems before users do? We're looking for a Senior SDET (Software Development Engineer in Test) with strong Python and API testing expertise to help ensure the quality, reliability, and security of mission-critical applications in the fintech and payments industry. This role combines software development, automation engineering, and quality assurance, with a strong focus on API testing, CI/CD integration, and modern AI-powered engineering practices. 💡 Your Mission 🧪 Test Automation & Quality Engineering Design, develop, and maintain scalable automated test frameworks using Python. Create and execute API test suites for RESTful and microservices-based applications. Develop end-to-end, integration, regression, and performance test scenarios. Improve test coverage, reliability, and execution efficiency across the platform. Collaborate with developers to implement shift-left testing practices. 🔍 API Testing Validate APIs for functionality, performance, security, and reliability. Design comprehensive test cases based on business and technical requirements. Perform contract, integration, and end-to-end testing across distributed systems. Analyze API logs and troubleshoot complex issues. ⚙️ CI/CD & Automation Integrate automated tests into Jenkins CI/CD pipelines. Support continuous testing strategies within Agile delivery teams. Improve automation processes to enable faster and safer releases. Monitor test execution and provide actionable quality metrics. 🤖 AI-Powered Quality Engineering Leverage AI tools such as GitHub Copilot, ChatGPT, Claude, and Cline to accelerate test development and improve productivity. Utilize AI-assisted approaches for test case generation, defect analysis, and documentation. Explore innovative AI-driven testing techniques and share best practices across the team. 🔐 Security & Compliance Testing Validate application security controls and authentication mechanisms. Support testing activities related to compliance and regulatory requirements. Ensure high-quality standards for systems processing sensitive financial data. 🤝 Collaboration Work closely with Developers, Product Managers, Business Analysts, and QA teams. Participate in Agile/Scrum ceremonies and planning sessions. Contribute to quality strategy, documentation, and process improvements. 🎯 Must-Have Skills Automation & Programming ✔️ 5+ years of experience in software testing and test automation ✔️ Strong hands-on experience with: Python PyTest API automation frameworks ✔️ Experience building and maintaining automated test frameworks from scratch API Testing ✔️ Extensive experience testing: REST APIs Microservices Distributed systems ✔️ Experience with: Postman Swagger/OpenAPI API mocking tools Contract testing CI/CD & DevOps ✔️ Experience with: Jenkins Git CI/CD pipelines ✔️ Understanding of modern software delivery practices Databases ✔️ Experience validating data using: PostgreSQL MySQL Oracle SQL queries Quality Engineering ✔️ Strong understanding of: Test automation best practices Integration testing Regression testing Performance testing Defect management ⭐ Nice to Have Experience with Selenium, Playwright, or Cypress Experience with performance testing tools such as JMeter or Gatling Experience working in cloud environments (AWS, Azure, or GCP) Knowledge of Docker and Kubernetes Familiarity with security testing methodologies Open-source contributions Technical blogging or community involvement 💳 FinTech & Payments Experience 2+ years of experience in fintech, payments, banking, or financial services Understanding of payment processing systems and transaction workflows Knowledge of PCI DSS compliance requirements Familiarity with financial messaging standards and real-time payment systems Experience testing highly regulated applications 🎁 What You'll Get ✨ Opportunity to work on innovative fintech and payment solutions ✨ High-impact role shaping quality standards and automation strategy ✨ Exposure to cutting-edge AI-powered engineering tools ✨ Hybrid work model (Gdańsk or Warsaw) ✨ Collaborative and supportive engineering culture ✨ Career growth opportunities and continuous learning ✨ Influence on testing frameworks, tooling, and engineering best practices 🚀 Ready to elevate software quality through automation, innovation, and engineering excellence? Join us and help build reliable, secure, and scalable platforms that power the future of digital payments.