Backend QA Engineer

🏢 Summary: Senior QA Automation Engineer role focused on designing and scaling automated test systems for APIs and end-to-end flows within a hybrid work model. The position emphasizes building and maintaining robust test frameworks in Java and TypeScript, validating API contracts, and integrating automated tests into CI/CD pipelines. You will drive quality improvements through risk-based testing, defect analysis, and close collaboration in Agile teams. 🗂️ Requirements: 5+ years of experience in automated testing (API and/or E2E), Very strong knowledge of Java for backend automation, Strong TypeScript/JavaScript skills, Experience with API testing (REST) using Rest Assured and/or Gatling, Proven experience with E2E automation using Playwright, Working knowledge of SQL for data validation, Experience with Git (PRs and code review), Practical experience with CI/CD tools (Jenkins, GitLab, GitHub Actions, or Azure DevOps), Experience with Maven or Gradle, Ability to work in Agile/Scrum environments, Good command of Polish, Communicative English, Existing legal right to work in Europe 📃 Skills: Java, TypeScript, JavaScript, REST, SOAP, Playwright, RestAssured, Gatling, SQL, Git, Jenkins, GitLab, GitHub, AzureDevOps, Maven, Gradle, Swagger 🏢 Description: Ignite quality at scale—design, automate, and evolve the test systems that keep modern platforms moving. Warsaw-based opportunity with hybrid work model. (4 remote days/week) As a Senior QA Automation Engineer , you will be working for our client, building reliable software through end-to-end test coverage—spanning REST/SOAP APIs, E2E flows, contract validation, and CI/CD automation. You’ll strengthen test frameworks, improve quality metrics, and help deliver stable releases faster through proactive defect diagnosis and clear, actionable reporting. Your main responsibilities: Design, implement, and maintain automated tests for APIs (REST/SOAP) and E2E (Playwright + TypeScript). Create test scenarios and backend + end-to-end flow test cases using a risk-based approach. Validate API contracts, including error scenarios, to ensure correct behavior across integrations. Develop and refactor test frameworks in Java and TypeScript, keeping them maintainable and scalable. Analyze test results across functional, integration, and performance checks, and drive improvements based on findings. Diagnose defects by investigating logs, requests, and data, then document findings with full reproduction steps (including logs and recordings when needed). Maintain and grow test execution in CI/CD pipelines and perform code reviews for test assets in collaboration with developers. Support requirements analysis, refinement, and sprint planning, while contributing to the overall test strategy and quality metrics. You're ideal for this role if you have: 5+ years of experience in automated testing (API and/or E2E). Very strong knowledge of Java for backend automation. Strong TypeScript/JavaScript skills. Experience with API testing (REST), using tools such as Rest Assured and/or Gatling. Proven experience with E2E automation using Playwright. Working knowledge of SQL for data validation. Experience with Git (PRs & code review). Practical experience with CI/CD (Jenkins, GitLab, GitHub Actions, or Azure DevOps) plus Maven or Gradle. Ability to work effectively in Agile/Scrum environments. It is a strong plus if you have: (optional) Experience with performance testing (e.g., Gatling). Knowledge of microservices architecture. Experience with tools like Swagger and API mocking. Language Required for the role : Polish — good command Communicative English — required Eligibility for the role : Only candidates with an existing legal right to work in Europe will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior QA Automation Engineer role focused on designing and maintaining automated API and E2E test frameworks, improving CI/CD pipelines, and ensuring high-quality releases through comprehensive test coverage. The position involves working with REST/SOAP services, Playwright, Java, and TypeScript in a hybrid model (4 days remote per week). You will contribute to test strategy, defect analysis, and quality metrics within an Agile environment. 🗂️ Requirements: 5+ years of experience in automated testing (API and/or E2E), Very strong knowledge of Java for backend automation, Strong TypeScript/JavaScript skills, Experience with REST API testing using Rest Assured and/or Gatling, Proven experience with Playwright for E2E automation, Working knowledge of SQL for data validation, Experience with Git (PRs and code reviews), Practical experience with CI/CD tools (Jenkins, GitLab, GitHub Actions, or Azure DevOps), Experience with Maven or Gradle, Ability to work in Agile/Scrum environments, Good command of Polish, Communicative English, Legal right to work in Europe 📃 Skills: Java, TypeScript, JavaScript, REST, SOAP, Playwright, RestAssured, Gatling, SQL, Git, Jenkins, GitLab, GitHub, AzureDevOps, Maven, Gradle, CI/CD, Swagger 🏢 Description: Ignite quality at scale—design, automate, and evolve the test systems that keep modern platforms moving. Warsaw-based opportunity with hybrid work model. (4 remote days/week) As a Senior QA Automation Engineer , you will be working for our client, building reliable software through end-to-end test coverage—spanning REST/SOAP APIs, E2E flows, contract validation, and CI/CD automation. You’ll strengthen test frameworks, improve quality metrics, and help deliver stable releases faster through proactive defect diagnosis and clear, actionable reporting. Your main responsibilities: Design, implement, and maintain automated tests for APIs (REST/SOAP) and E2E (Playwright + TypeScript). Create test scenarios and backend + end-to-end flow test cases using a risk-based approach. Validate API contracts, including error scenarios, to ensure correct behavior across integrations. Develop and refactor test frameworks in Java and TypeScript, keeping them maintainable and scalable. Analyze test results across functional, integration, and performance checks, and drive improvements based on findings. Diagnose defects by investigating logs, requests, and data, then document findings with full reproduction steps (including logs and recordings when needed). Maintain and grow test execution in CI/CD pipelines and perform code reviews for test assets in collaboration with developers. Support requirements analysis, refinement, and sprint planning, while contributing to the overall test strategy and quality metrics. You're ideal for this role if you have: 5+ years of experience in automated testing (API and/or E2E). Very strong knowledge of Java for backend automation. Strong TypeScript/JavaScript skills. Experience with API testing (REST), using tools such as Rest Assured and/or Gatling. Proven experience with E2E automation using Playwright. Working knowledge of SQL for data validation. Experience with Git (PRs & code review). Practical experience with CI/CD (Jenkins, GitLab, GitHub Actions, or Azure DevOps) plus Maven or Gradle. Ability to work effectively in Agile/Scrum environments. It is a strong plus if you have: (optional) Experience with performance testing (e.g., Gatling). Knowledge of microservices architecture. Experience with tools like Swagger and API mocking. Language Required for the role : Polish — good command Communicative English — required Eligibility for the role : Only candidates with an existing legal right to work in Europe will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior QA Backend Engineer role focused on validating distributed microservice architectures, backend integrations, and event-driven systems in an Agile environment. The position involves deep backend testing, log and trace analysis, API and database validation, and coordination across multiple development squads. Hybrid work model with mandatory on-site presence in Warsaw and English communication at C1 level. 🗂️ Requirements: 5+ years of commercial end-to-end software testing experience, Strong analytical test design skills, Architectural understanding of web and mobile applications, Experience with Jira, Experience with Xray, Experience with TestRail, Experience with YouTrack, Experience in Agile environments, Experience with AWS SNS/SQS or similar queue systems, API testing experience, SQL proficiency, English C1 📃 Skills: AWS, SNS, SQS, Postman, Swagger, SQL, Jira, Xray, TestRail, YouTrack, Scrum, Kanban, REST, HTTP, ISTQB 🏢 Description: co.brick talents — powered by AI, powered by people. We are seeking a highly analytical Senior QA Backend Engineer to orchestrate the validation of complex, multi-service architectures and event-driven data flows. In this position, you will heavily focus on backend testing—analyzing system logs, tracing service-to-service communication, and validating backend message handling across modern cloud infrastructure. Operating within an Agile environment, you will bridge communication gaps between multiple development teams, identify critical system paths, and ensure end-to-end product stability. Details Seniority: Senior (5+ years of software testing experience). Allocation: Full-time (1 FTE). Rate: 65-80 pln/h B2B Start Date: ASAP. Languages: English at a C1 level (essential for cross-team coordination). Work Model & Location: Hybrid. Weekly on-site presence required on Thursdays at the client's office in Warsaw (Mokotów) , plus mandatory on-site attendance for periodic PI Planning sessions. Responsibilities Backend & Microservices Validation: Deep-dive into testing distributed microservice architectures, verifying that data flows, async states, and transactions resolve correctly across isolated components. Event-Driven & Integration Testing: Map and validate messaging architectures, specifically focusing on event queues, data ingestion routing, and message pub/sub lifecycles. Log & Trace Analysis: Proactively parse server-side logs, monitor internal API gateways, and evaluate database persistence to uncover anomalies before they reach production. Test Orchestration: Strategy, plan, and execute rigorous integration, system, usability, and E2E testing suites, while guiding cross-functional teams through complex User Acceptance Testing (UAT) gates. Cross-Squad Alignment: Drive alignment and foster communication between distinct development squads to pinpoint high-risk areas, eliminate technical silos, and improve platform reliability. Requirements Core QA Competencies 5+ years of verified commercial experience in end-to-end software testing with strong analytical test design capabilities. Solid architectural understanding of web and mobile application structures. High proficiency with test and defect management tooling (e.g., Jira, Xray, TestRail, YouTrack ). Experienced operating within agile software development lifecycles (Scrum/Kanban). Backend & Systems Stack Strong experience tracking asynchronous integrations via AWS SNS/SQS or similar queue infrastructures. Hands-on command over API testing toolsets ( Postman, Swagger , etc.). Proficient with SQL databases (writing queries, validating schema states, and isolating data anomalies). Nice to Have (Pluses) Domain experience inside Card Payments or Card Management Systems (Fintech/Banking) . Hands-on familiarity with test automation structures for mobile or web surfaces. Deep architectural understanding of REST API standards, HTTP status protocols, and API contract testing. Professional QA certifications ( ISTQB Foundation and/or ISTQB Advanced Level Test Analyst ).

🏢 Summary: Senior QA Engineer role focused on automation testing for the Credit Assessment and Decision team, with responsibility for API and regression test automation, release support, and quality assurance throughout the delivery lifecycle. The position emphasizes an automation-first approach, collaboration with developers and analysts, and maintaining high-quality testing practices in enterprise environments. Fully remote work is available with a B2B contract. 🗂️ Requirements: 5+ years of senior-level QA experience, Automation testing experience, Robot Framework, Python, API testing, System testing, Automated test suite maintenance, CI/CD pipelines, English 📃 Skills: Robot, Python, API, CI/CD, Jenkins, qTest, Pega, BizDevOps 🏢 Description: Industry: Retail Rate: up to 120pln/h net+VAT Location: Warsaw, Tricity, Łódź (Fully remote option available) Type of contract: B2B Summary: The Senior QA Engineer role is designed to enhance the quality assurance process within the Credit Assessment and Decision team by focusing on automation testing and ensuring project quality from early stages of delivery. Responsibilities: Design, create, and maintain automated tests for API-based systems and regression testing. Support release activities by preparing, executing, and following up on quality assurance tasks. Perform selective exploratory and release-focused manual testing where automation is not the most effective. Manage and maintain test assets with proper traceability and reporting in enterprise test management tools. Investigate failed test runs to identify issues related to product defects, test defects, data problems, or environment instability. Collaborate closely with developers and business analysts to ensure quality is addressed early in the delivery process. Act as a senior QA voice within the project by promoting best testing practices and a strong automation-first approach. Contribute to knowledge sharing and participate in cross-project tester ceremonies. Requirements: 5+ years of senior-level QA experience with a focus on automation testing. Hands-on experience with Robot Framework and Python for test automation. Strong experience in API and system testing. Proficiency in maintaining automated test suites. Experience with CI/CD pipelines to support automated test execution. Good spoken and written English. Nice to have: Familiarity with qTest as a test management tool. Experience in financial services or regulated environments. Exposure to Pega-based solutions or comparable enterprise platforms. Experience in BizDevOps environments. Familiarity with Jenkins and similar CI/CD tools.

🏢 Summary: QA Backend Engineer role focused on testing complex backend systems, microservice architectures, and distributed integrations in a hybrid work model. The position involves end-to-end validation, API and integration testing, defect management, and collaboration with multiple development teams in Agile environments. The offer includes B2B cooperation, private healthcare, life insurance, and access to learning platforms. 🗂️ Requirements: 5+ years of Software Tester experience, Backend-focused testing experience, Experience with microservice architectures, Knowledge of test design techniques, Experience with integration, system, E2E, and UAT testing, Understanding of asynchronous and event-driven systems, Experience with AWS SNS/SQS, Knowledge of SDLC, Experience with Jira or YouTrack, Experience with TestRail or Xray, Experience with Postman and Swagger, SQL database experience, Ability to analyze logs and trace requests, Experience in Agile environments, Strong analytical and problem-solving skills, Strong communication and collaboration skills 📃 Skills: QA, Testing, Microservices, AWS, SNS, SQS, SQL, Postman, Swagger, Jira, YouTrack, TestRail, Xray, Agile, SDLC, REST, HTTP, UAT, E2E 🏢 Description: Location: Hybrid work model (Warsaw, Mokotów). Onsite presence required on Thursdays and during PI Planning sessions Availability: ASAP / within 1 month Contract Type: B2B via Experis About the Role We are looking for a QA Backend Engineer to join a dynamic product development environment. In this role, you will be responsible for ensuring the quality, stability, and reliability of complex applications and integrations. You will work closely with multiple development teams, validating end-to-end business processes and backend flows across distributed systems and microservice-based architectures. Responsibilities - Plan and execute integration, system, and usability testing activities - Participate in End-to-End (E2E) and User Acceptance Testing (UAT) - Validate complex backend processes across multiple microservices and integrations - Analyze test results and identify potential risks affecting product quality and stability - Work closely with developers to understand critical business and technical flows - Analyze logs, trace requests, and validate data flow across services - Support defect management and resolution activities - Build strong cooperation with multiple development teams - Collaborate with cross-functional and cross-team stakeholders to continuously improve product quality - Contribute to testing strategy, planning, execution, and evaluation throughout the software development lifecycle Requirements - At least 5 years of experience as a Software Tester - Experience in planning, analyzing, executing, and evaluating tests - Strong knowledge of common test design techniques - Strong analytical and problem-solving skills - Strong backend-focused testing experience - Experience testing microservice-based architectures across multiple services - Understanding of asynchronous and event-driven systems - Experience with AWS SNS/SQS integrations and messaging flows - Understanding of mobile and web-based applications - Good understanding of the Software Development Lifecycle (SDLC) - Experience with defect management tools such as Jira or YouTrack - Experience with test management tools such as TestRail or Xray - Experience using API testing tools such as Postman and Swagger - Experience working with SQL databases - Ability to analyze logs, trace requests, and validate data flows - Experience working in Agile environments - Strong communication and collaboration skills - Ability to work effectively with multiple development teams - Highly motivated team player with a proactive attitude Nice to Have - Experience with test automation for mobile and web applications - Knowledge of REST API standards, HTTP protocols, and API contract validation - Experience within card payments or card management domains - ISTQB Foundation Level and/or ISTQB Advanced Test Analyst certification Offer - Multisport card - Private healthcare (Medicover) - Access to an e-learning platform - Group life insurance

🏢 Summary: Senior QA Engineer role focused on developing and maintaining a scalable test automation framework used across multiple teams, ensuring high quality of complex, cross-functional solutions in a cloud-based environment. The position involves enhancing automation standards, CI/CD pipelines, and QA methodologies, primarily using Selenium and Java. The role operates in a hybrid model and requires strong expertise in cloud and DevOps practices. 🗂️ Requirements: Mastery of QA methodologies: test planning, design, execution, reporting, Extensive experience with Selenium and Selenium Grid, Strong programming skills in Java, Experience designing and maintaining test automation frameworks, Experience with CI/CD pipelines and Jenkins, Experience in cloud environments, preferably Azure, Knowledge of Agile and DevOps practices, Experience in defect management and root cause analysis, Proven experience as Senior QA Engineer or QA Architect, English proficiency B2+ 📃 Skills: Selenium, SeleniumGrid, Java, Azure, Jenkins, CICD, Agile, DevOps, QA, TestAutomation, Architecture, DesignPatterns 🏢 Description: In Cyclad we work with top international IT companies in order to boost their potential in delivering outstanding, cutting-edge technologies that shape the world of the future. We are seeking a Senior QA Engineer to join our client. This role is focused on testing framework, used by multiple teams. Backbone, the foundation of our functional and end-to-end tests and key to guaranteeing the highest possible quality standards for our product. We are looking for talented Quality Assurance engineer, that’s excellent team member, a problem solver, a communicator and proficient in QA domain. Project information: Industry: Travel Location: Warsaw, Poland Work Setup: Hybrid, 2-3 days per week in the office Rate: 130 – 150 PLN/net/h + VAT on B2B Languages: English (B2+ Required) Start date: ASAP/ depending on candidate availability Project scope: Participate in internal/external forums and discussions around QA methodology/framework/tooling evolution Analyze, define, and execute test standards and procedures for complex and cross-functional solutions. Master QA methodologies, including test planning, design, execution, and reporting. Document defects, perform root cause analysis, and recommend corrective actions. Design/create/enhance/improve scalable and maintainable test automation frameworks, test plans, test cases, and test data, using mainly Selenium & Selenium Grid. Perform code reviews and ensure adherence to best practices for test automation Develop and maintain continuous integration/continuous deployment (CI/CD) pipelines and tools, such as Jenkins. Propose relevant KPI and ways of measuring them efficiently, for both software deliverables and compliance Ensure adoption and improvement of testing tools & environments: promote existing ones to avoid duplication, evaluate them, and recommend improvements Continuously evaluate and recommend tools and technologies to enhance the automation process Participate in the understanding, measurement, and reduction of the environmental impact of the tested applications and associated QA activities Requirements: Mastery of QA methodologies, including test planning, design, execution, and reporting Strong skills in defect documentation, root cause analysis, and recommending corrective actions Expertise in QA tools, test environments, and test automation frameworks/solutions Extensive knowledge and experience in the usage of Selenium & Selenium Grid Strong skills in programming, architecture, and design patterns in Java Proven experience as a QA Architect or Senior QA Engineer in cloud-based environments, preferably Azure Experience with continuous integration/continuous deployment (CI/CD) pipelines and tools (e.g., Jenkins) Strong Cloud experience - Azure or similar Solid understanding of Agile methodologies and DevOps practices Hold a proficient product domain knowledge incl. relevant business processes & scenarios and a proficient understanding of customer needs Certification in QA and automation testing (e.g., ISTQB, CSTE) is a plus Skills Level: Strong skills in programming, architecture, and design patterns in Java → Confirmed 3/4 Solid understanding of Agile methodologies and DevOps practices → Confirmed ¾ Extensive knowledge and experience in the usage of Selenium & Selenium Grid → Expert 4/4 Expertise in QA tools, test environments, and test automation frameworks/solutions → Expert 4/4 Experience with continuous integration/continuous deployment (CI/CD) pipelines and tools (e.g., Jenkins) → Confirmed 3/4 We offer: Full-time job agreement based on B2B Private medical care with dental care (covering 70% of costs) + rehabilitation package. Family package option possible Multisport card (also for an accompanying person) Life insurance

🏢 Summary: Senior QA Automation Engineer role focused on backend and frontend test automation, integration and performance testing, and improving QA frameworks and processes. The position involves close collaboration with development teams, mentoring others, and driving testing standards in a hybrid work model. 🗂️ Requirements: 5+ years of QA/Automation experience, Strong programming skills in Java and/or JavaScript, Experience with Jira and Xray, Experience with Git, Experience with Postman for API testing, Understanding of CI/CD pipelines and tools, Knowledge of SDLC, Understanding of API structures and responses, Experience in performance testing, Experience building and maintaining testing frameworks, Experience with code reviews, Knowledge of SOLID, KISS, and OOP principles, Strong communication skills, Analytical thinking, Ability to work in a dynamic environment 📃 Skills: Java, JavaScript, Jira, Xray, Git, Postman, CI/CD, SDLC, Selenium, Selenide, Cypress, TestNG, JUnit, Cucumber, JMeter, REST, Assured, Gatling, Appium, XCUI, SOLID, KISS, OOP 🏢 Description: About the Role We are looking for a Senior QA Automation Engineer with a strong technical background in both frontend and backend testing (approx. 30% Frontend / 70% Backend). This role is ideal for a technically mature professional who can independently deliver high-quality solutions while also mentoring others and driving best practices across teams. Key Responsibilities Plan and execute integration, system, and usability testing Participate in End-to-End (E2E) and User Acceptance Testing (UAT) Collaborate with developers to understand critical paths and ensure product stability Strengthen cooperation and communication across Dev Teams Contribute to improving QA processes, frameworks, and testing standards Requirements 5+ years of experience in QA/Automation Strong programming skills in Java and/or JavaScript Practical experience with: Jira (preferably with Xray) Git Postman for API testing Deep understanding of: CI/CD pipelines and tools Software Development Life Cycle (SDLC) API structures and responses Experience in: Performance testing Building and maintaining testing frameworks Code reviews Tool integration and adoption of new technologies (PoC, showcases) Solid knowledge of: Design patterns and programming principles (SOLID, KISS, OOP) Automation & Testing Stack Web Testing Selenium / Selenide (primary tools) Cypress (depending on the team) TestNG / JUnit Cucumber JMeter (nice to have) API Testing REST Assured TestNG / JUnit Gatling (nice to have) Mobile Testing Appium XCUI Test (if applicable) Performance Testing Gatling (preferred) JMeter (nice to have) Soft Skills Strong communication skills Excellent analytical thinking Mentorship and knowledge-sharing mindset Proactive attitude and ownership Strong planning and prioritization skills Ability to work in a dynamic environment (context switching) Passion for driving technical innovation Work Model Hybrid model: 1 day every two weeks (Thursday) in the Warsaw office Additional on-site presence (2–3 days) every 2–3 months for planning sessions

🏢 Summary: Senior Automation Test Engineer / Quality Engineer role focused on building and optimizing automated testing for back-end systems and mobile applications (iOS/Android) in a hybrid Krakow-based setup. The position drives quality initiatives, performance testing, and automation framework improvements while mentoring team members and collaborating with cross-functional teams. 🗂️ Requirements: 4+ years experience in automation or quality engineering, Proficiency in Java and Appium, Experience with mobile testing (iOS/Android), Experience with API and database testing, Experience with manual testing, Experience with performance testing tools, Ability to create and maintain test plans and strategies, Experience with CI/CD pipelines, Experience with version control systems, Fluent English, Legal right to work in the EU 📃 Skills: Java, Appium, JMeter, LoadRunner, REST, RESTAssured, SQL, Jenkins, Git, iOS, Android, CI/CD 🏢 Description: Unleash Innovation — Shape the Future of Quality Engineering! Krakow-based opportunity with hybrid work model. As a Senior Automation Test Engineer / Quality Engineer , you will be working for our client, a forward-thinking leader in technology solutions dedicated to elevating product quality through innovative testing strategies. This role is pivotal in driving seamless testing processes and nurturing a culture of excellence across the organization. Your main responsibilities: Develop and maintain automated test scripts targeting back-end systems and mobile applications (iOS/Android). Perform manual testing to validate critical functionalities and ensure comprehensive coverage. Create and maintain detailed test plans and strategies aligned with project requirements. Drive quality initiatives by defining metrics, optimizing workflows, and implementing best practices. Mentor and upskill the testing team, fostering a culture of continuous improvement. Conduct performance testing (e.g., JMeter, LoadRunner) and back-end testing (e.g., REST Assured). Optimize automation frameworks and adopt new testing tools and technologies. Collaborate with cross-functional teams to refine test strategies and ensure clear communication. You're ideal for this role if you have: 4+ years of experience as a Senior Automation Test Engineer or Quality Engineer. Strong proficiency in Java, Appium, and performance testing tools. Expertise in mobile app testing (iOS/Android), API/database testing, and manual testing. Experience in creating and maintaining test plans and strategies. Leadership skills to mentor teams and drive quality initiatives. Familiarity with CI/CD pipelines (e.g., Jenkins) and version control (e.g., Git). Excellent communication and problem-solving skills. It is a strong plus if you have: Certifications in testing or automation tools (optional). Language Required for the role: Fluent in English, with excellent communication skills. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Backend Engineer role focused on building and scaling a cloud-based SaaS platform using modern .NET services and REST APIs. The position involves designing distributed systems, improving reliability and observability, and working with cloud and container environments. You will contribute to technical decisions and engineering best practices within a collaborative team. 🗂️ Requirements: 5+ years backend development experience, Experience with SaaS and web applications, Strong knowledge of C#, Strong knowledge of modern .NET/.NET Core, Solid computer science fundamentals, Experience with distributed systems design, Experience with cloud platforms, Experience with containers and orchestration, Understanding of concurrency and performance, Knowledge of authentication and authorization mechanisms 📃 Skills: C#, .NET, .NETCore, REST, Azure, AWS, GCP, Kubernetes, Kafka, RabbitMQ, SQS, Docker, SQL, HTML, CSS, JavaScript 🏢 Description: We’re hiring a Senior Backend Engineer to help build and scale a cloud-based SaaS platform. You’ll work on modern .NET services and APIs, improve reliability and observability, and contribute to technical decisions as part of a collaborative engineering team. Responsibilities: Build and maintain backend services and REST APIs in C# / .NET (.NET Core). Design scalable solutions for distributed systems (async workflows, messaging, integrations). Work with cloud services (Azure/AWS/GCP) and container environments (e.g. Kubernetes). Strengthen system reliability with logging, metrics, tracing, and monitoring. Support secure access patterns: authentication/authorization, API gateway concepts. Contribute through code reviews, good engineering practices, and automation. Requirements: 5+ years of backend development experience, including SaaS and web applications. Strong knowledge of C# and modern .NET + solid CS fundamentals. Familiarity with containers/orchestration and cloud-native approaches. Experience with some of: Kafka/RabbitMQ/SQS, workflow orchestration, job scheduling, search. Good understanding of concurrency and performance. Strong communication skills; Agile/Scrum is a plus. Bonus: basic front-end knowledge (HTML/CSS/JS).

🏢 Summary: B2B contract role for a Senior Manual QA Engineer focused on backend and API testing within a platform managing electric vehicle charging networks. The position involves testing microservices-based systems, validating integrations and asynchronous processes, and ensuring data flow integrity in a distributed environment. Work is hybrid in Warsaw with international collaboration in an Agile setup. 🗂️ Requirements: Minimum 5 years of software testing experience, Experience in manual backend and API testing, Experience in preparing test scenarios and executing manual tests, Experience in testing system integrations and microservices architecture, Knowledge of REST API testing using Postman or Swagger, Experience with asynchronous and event-driven systems, Ability to analyze logs, requests, and data flows, Very good knowledge of SQL, Knowledge of QA best practices and testing standards (e.g., ISTQB), English level minimum B2+ 📃 Skills: API, REST, Postman, Swagger, SQL, Microservices, AWS, SNS, SQS, Agile, ISTQB, Grafana, OpenSearch 🏢 Description: W ITLT pomagamy naszym zaprzyjaźnionym firmom przekształcać ambitne pomysły w cyfrową rzeczywistość. Z nastawieniem na wyzwania, ciekawość technologii i zwinność współtworzymy wyjątkowe rozwiązania IT i zapewniamy doświadczone osoby eksperckie, które pomagają przyspieszać cyfrową transformację. Aktualnie poszukujemy profilu na stanowisko: Senior Manual QA Engineer (Backend/API) Informacje organizacyjne: Forma współpracy: kontrakt b2b, zaangażowanie stabilne, długofalowe Stawka: 80 - 110 PLN netto + Vat/h (w zależności od umiejętności i doświadczenia) Lokalizacja biura: Warszawa, Mokotów Tryb realizacji usług: hybryda, 2-3 dni w tygodniu z biura Język angielski: wymagany na poziomie umożliwiającym swobodną komunikację (min. B2+/C1-),  praca w międzynarodowym środowisku Sektor: energetyka Projekt: rozwój platform i systemów do zarządzania siecią stacji ładowania pojazdów elektrycznych Zakres zadań: Przygotowywanie scenariuszy testowych oraz wykonywanie manualnych testów backendowych i API Testowanie integracji pomiędzy mikroserwisami i weryfikacja przepływu danych Analiza logów, requestów oraz danych w celu diagnozowania problemów Weryfikacja REST API przy użyciu narzędzi takich jak Postman i Swagger Testowanie procesów asynchronicznych oraz komunikacji opartej o AWS SNS/SQS Raportowanie i dokumentowanie błędów Współpraca z zespołami developerskimi i QA w środowisku Agile Oczekiwania: Min. 5 lat doświadczenia w testowaniu oprogramowania Doświadczenie w przygotowywaniu scenariuszy testowych oraz realizacji testów manualnych Bardzo dobra znajomość testowania backendu, API oraz integracji między systemami Dobra znajomość narzędzi takich jak Postman/Swagger Doświadczenie w analizie procesów end-to-end oraz przepływu danych pomiędzy usługami Doświadczenie w testowaniu architektury opartej o mikroserwisy Znajomość systemów asynchronicznych i event-driven (preferowane doświadczenie z AWS SNS/SQS) Umiejętność analizy logów, requestów oraz diagnozowania problemów w środowiskach rozproszonych Bardzo dobra znajomość SQL Znajomość dobrych praktyk QA oraz standardów testowania (np. ISTQB) Umiejętność analitycznego myślenia i rozumienia komunikacji pomiędzy komponentami/systemami Bardzo dobre umiejętności komunikacyjne i współpracy z zespołami developerskimi Mile widziane: Znajomość narzędzi observability, takich jak Grafana czy OpenSearch Podstawowe doświadczenie w testowaniu frontendowym/UI Oferujemy: Długofalową, stabilną współpracę w oparciu o kontrakt B2B Szansę na rozwój w dużej strukturze, bezpośredni kontakt z Managerem zespołu Współpracę z ekspertami w firmie, w której IT jest dojrzałe i globalne, a metodyki zwinne są respektowane Dopłatę do karty MultiSport oraz ubezpieczenia Godziny startu pracy 7:30 - 9:30 Agencja zatrudnienia - nr certyfikatu 14181