Senior QA Backend Engineer

🏢 Summary: Senior QA Backend Engineer role focused on validating distributed microservice architectures, event-driven systems, and backend integrations across cloud infrastructure. The position involves backend testing, log and trace analysis, API and database validation, and coordinating cross-team quality efforts in an Agile environment. Hybrid work model with mandatory onsite presence in Warsaw and English communication at C1 level. 🗂️ Requirements: 5+ years of commercial software testing experience, Experience with end-to-end software testing, Strong analytical test design skills, Architectural understanding of web and mobile applications, Experience with Jira, Xray, TestRail or YouTrack, Experience working in Agile environments, Experience with AWS SNS/SQS or similar queue systems, Experience with API testing tools, SQL database proficiency, English level C1, Availability for hybrid work in Warsaw 📃 Skills: AWS, SNS, SQS, Postman, Swagger, SQL, Jira, Xray, TestRail, YouTrack, Scrum, Kanban, REST, HTTP, UAT 🏢 Description: 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: 100 -125 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 Test Automation Engineer role focused on backend/API automation (70%) and web/mobile frontend testing (30%), with responsibility for designing scalable test frameworks and embedding quality gates in CI/CD pipelines. The position involves performance testing, integration and E2E validation, and close collaboration with development teams. The engineer will also lead code reviews, mentor others, and drive best practices across the SDLC. 🗂️ Requirements: 5+ years of commercial experience in test automation, Proficiency in Java and/or JavaScript, Strong knowledge of OOP, SOLID and clean code principles, Advanced Git workflow and code review experience, Expertise in REST Assured and Postman, Experience with Selenium or Selenide, Cypress, TestNG, JUnit, Cucumber, Experience with Appium and XCUITest, Experience integrating automated tests into CI/CD pipelines, Hands-on experience with Gatling, Comprehensive understanding of SDLC, English proficiency at B2/C1 level, Availability for hybrid work with regular on-site presence in Warsaw 📃 Skills: Java, JavaScript, REST, RESTAssured, Postman, Selenium, Selenide, Cypress, TestNG, JUnit, Cucumber, Appium, XCUITest, Gatling, JMeter, Git, CI/CD, Jira, Xray, JSON, OOP, SOLID, KISS 🏢 Description: co.brick talents — powered by AI, powered by people. We are seeking a technically mature Senior Test Automation Engineer to drive the quality assurance lifecycle, focusing heavily on backend/API validation (70%) while maintaining robust web and mobile frontend coverage (30%). In this role, you will go beyond executing standard test plans—you will architect and maintain scalable automated testing frameworks, integrate new performance or tooling proof-of-concepts, and actively mentor mid-level engineers. You will collaborate closely with cross-functional development squads to identify critical system paths, introduce stable quality gates, and champion software engineering best practices. Details Seniority: Senior (5+ years of commercial experience). Allocation: Full-time (1 FTE). Rate: Up to 120 PLN/h. Start Date: ASAP. Languages: English at a B2/C1 level (clear, effective communication across teams). Work Model & Location: Hybrid. Required on-site presence at the client's office in Warsaw, Poland for 1 day every two weeks (specifically Thursdays) , plus an additional 2–3 days on-site every 2–3 months for strategic planning sessions. Responsibilities Test Architecture & Strategy: Plan, design, and execute integration, system, usability, and End-to-End (E2E) testing suites. Support business units during User Acceptance Testing (UAT) phases. Backend & API Automation ($70\%$ Focus): Build and scale automated API test coverage, verifying data contracts, JSON payloads, and response structures. Frontend & Mobile Automation ($30\%$ Focus): Maintain and extend cross-browser web automation and native mobile testing workflows. CI/CD & Pipeline Quality Gates: Embed automated tests seamlessly into distribution pipelines, ensuring high availability, continuous validation, and rapid feedback loops. Performance Testing: Conduct load, stress, and scalability profiling to identify system bottlenecks. Leadership & Code Quality: Lead technical code reviews, promote engineering design patterns, run exploratory PoCs for fresh technologies, and mentor team members to foster a proactive engineering culture. Requirements Core Development Baseline Proficiency in Java and/or JavaScript (JS) . Strong understanding of clean code principles, OOP, SOLID , and KISS . Advanced Git workflow mastery and experience handling code reviews. API Testing & Automation Expert knowledge of REST Assured and Postman . Deep understanding of API response schemas and integration contract validation. Automation Frameworks & Ecosystem Web Front: Selenium / Selenide (primary web standard), Cypress , TestNG , JUnit , and Cucumber . Mobile: Appium and XCUITest . Test Management: Jira (highly preferred with Xray integration). Comprehensive expertise spanning the entire Software Development Life Cycle (SDLC). Performance & Pipelines Gatling (the primary performance testing tool within the organization). Expert control over CI/CD process chains and runner integration. Nice to have: JMeter . Soft Skills & Core Competencies Strong mentorship attitude with a natural drive to support and upscale peer engineers. Proactive mindset with excellent planning, prioritization, and analytical skills. High adaptability—comfortable managing context-switching in a dynamic environment.

🏢 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: Mid/Senior QA Backend Engineer role focused on backend, integration, system, and API testing in microservice-based environments. The position involves validating complex backend flows, collaborating with multiple development teams, and ensuring product stability in Agile projects. Hybrid work model in Warsaw with a B2B contract and ASAP availability. 🗂️ Requirements: 3+ years of experience as a software tester, Experience in planning, analysis, execution and evaluation of tests, Knowledge of common test design techniques, Strong backend-focused testing experience, Experience testing microservice-based architectures, Understanding of asynchronous and event-driven systems, Experience with AWS SNS/SQS integrations, Knowledge of software development lifecycle, Experience with defect management tools, Experience with test management tools, Experience with API testing tools, Experience with SQL databases, Ability to analyze logs and trace requests, Experience in Agile testing projects, English level B2/C1, Strong cross-team collaboration skills 📃 Skills: QA, Backend, Microservices, AWS, SNS, SQS, Jira, YouTrack, TestRail, Xray, Postman, Swagger, SQL, Agile, API, REST, HTTP, ISTQB 🏢 Description: For one of our clients, we are looking for a QA Backend Engineer (m/f/n). Technical Skills: At least 3+ years of experience as software tester Highly motivated team player with strong communication skills Working experience in planning, analysis, execution and evaluation of tests Working experience and knowledge of common test design techniques Strong test analytics skills Understanding of mobile and web-based applications 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 based integrations and messaging flows Understanding of software development lifecycle Knowledge of defect management tools like: Jira, YouTrack etc. Knowledge of test management tools like: TestRail, Xray etc . Experience of API testing tools: Postman, Swagger etc . Experience with SQL databases Ability to analyze logs, trace requests and validate data flow across services Experience in Agile Testing in projects Strong cross-team collaboration and communication skills while working with multiple development teams Seniority Mid/Senior English B2/C1 Nice to have: Experience in automation test of mobile and web applications is an advantage Knowledge of REST API standards, HTTP protocols and API contract validation is an advantage Knowledge and experience in card payments/card management subject matter is an advantage ISTQB Foundation Level and/or ISTQB Advanced Level Test Analyst certification is an advantage Scope of Responibilities: Plan and execute integration, system and usability testing Taking part of E2E and UAT testing Validate complex backend flows across multiple microservices and integrations Work with the developers to understand the critical paths and ensure product stability Build better cooperation with other Dev Teams Collaborate closely with cross-functional and cross-team stakeholders to improve overall product quality Offer: Rate: 85 PLN/H net + VAT B2B contract via SHIMI Location: Warsaw - hybrid work Availability: ASAP

🏢 Summary: Senior Backend QA Engineer role focused on ensuring quality, reliability, and security of .NET-based backend services, APIs, and SQL databases in a hybrid Kraków setup. The position involves designing and executing backend test strategies, validating data integrity, and integrating automated tests into CI/CD pipelines. This role targets mission-critical systems within an international environment. 🗂️ Requirements: Minimum 5 years experience as Software Tester or QA Engineer, Hands-on experience testing .NET backend services, At least 2 years experience in API testing, Strong SQL skills including complex queries and stored procedures, Experience with CI/CD pipelines, Experience with Jenkins or Azure DevOps, Ability to design and execute backend test cases, Experience with defect tracking and debugging backend issues, Fluency in English 📃 Skills: .NET, SQL, REST, Postman, Swagger, Jenkins, Azure, JMeter, k6, CI/CD, TDD 🏢 Description: Ignite quality assurance excellence — elevate backend systems to new standards! Kraków-based opportunity with hybrid work model (up to 3 remote days per week). As a Senior Backend QA Engineer , you will be working for our client, a global leader in delivering innovative backend solutions. You will play a pivotal role in ensuring the robustness, reliability, and security of backend services and APIs built on .NET and SQL, contributing directly to the seamless operation and trustworthiness of their digital platforms. This is an exciting opportunity to impact mission-critical systems and advance your career within a dynamic, international environment. Your main responsibilities: Design, develop, and execute comprehensive test cases for backend services, APIs, and databases. Perform integration, regression, and system testing on .NET backend applications. Validate data integrity and business logic within SQL databases, including stored procedures and complex queries. Test and validate RESTful APIs using tools such as Postman or Swagger. Analyze system requirements and craft effective test strategies to ensure full coverage. Identify, document, and track defects, collaborating closely with developers to facilitate rapid resolution. Contribute to the continuous improvement of QA processes and best practices. Support CI/CD pipelines by integrating automated tests and assisting ongoing deployment activities. You're ideal for this role if you have: At least 5 years of experience as a Software Tester or QA Engineer, preferably focused on backend or API testing. Strong hands-on experience testing .NET backend code and services. 2+ years of practical API testing and validation experience. Proficiency in SQL, including the ability to craft and execute complex queries and test stored procedures. Solid understanding of CI/CD pipelines and experience with tools like Jenkins or Azure DevOps. Knowledge of software engineering best practices, including SOLID principles, TDD, and data validation. Experience analyzing logs and debugging backend issues. It is a strong plus if you have: (optional) Experience with performance and load testing tools such as JMeter or k6. Knowledge of microservices architecture and cloud platforms like Azure. Understanding of security testing for backend services. Language Required for the role: Fluency in English (good command). We offer you: ITDS Business Consultants is involved in various, innovative, and professional IT projects for international companies in the financial industry in Europe. We offer an environment for professional, ambitious, and driven people. The offer includes: Stable and long-term cooperation with very good conditions Enhance your skills and develop your expertise in the financial industry Work on the most strategic projects available in the market Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years Participation in Social Events, training, and work in an international environment Access to an attractive Medical Package Access to Multisport Program #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: Part-time Senior QA Automation Engineer role focused on architecting and scaling automated E2E, API, and visual regression test frameworks integrated with modern CI/CD pipelines in a fully remote setup. The position involves ownership of Playwright-based automation, cross-device UI validation, and backend API testing to ensure high reliability across complex environments. The engagement runs from mid-June to end of September 2026 with possible extension. 🗂️ Requirements: Senior-level experience with Playwright, Strong proficiency in TypeScript or JavaScript, Hands-on experience with API automation testing, Experience with REST endpoint validation and JSON schema validation, Practical experience with CI/CD pipelines, Experience with GitHub Actions, GitLab CI, Jenkins, or CircleCI, Knowledge of visual regression testing, Experience designing smoke tests for live deployments, Ability to manage test data across staging and pre-production environments, Understanding of caching layers and test isolation, English proficiency at B2 level or higher 📃 Skills: Playwright, TypeScript, JavaScript, REST, JSON, CI/CD, GitHub, GitLab, Jenkins, CircleCI, POM, Redis 🏢 Description: co.brick talents — powered by AI, powered by people. Join a leading European software firm specializing in enterprise HR and payroll accounting solutions as a Senior QA Automation Engineer. Your mission is to mature, scale, and integrate automated test suites within modern CI/CD pipelines. You will take ownership of end-to-end (E2E), API, and visual regression testing frameworks, ensuring high system reliability across complex multi-viewport environments and third-party partner integrations. Details Allocation: Part-time ( 0.5 FTE ). Rate: 140 PLN/h. Start Date: June 15, 2026. Duration: through the end of September 2026, with a strong possibility of extension. Work Model: 100% Remote Responsibilities Framework Engineering: Architect, maintain, and optimize robust automated test suites using Playwright and TypeScript, applying the Page Object Model (POM). Visual & Cross-Device Testing: Implement multi-viewport layouts and manage visual regression testing baselines to ensure cross-platform UI consistency. API Validation: Author automated backend tests covering REST endpoints, JSON schema validations, and mock layer behaviors for external supplier sandboxes. Data & Environment Parity: Manage test data states across staging and pre-production tiers, actively mitigating data state and caching discrepancies (e.g., live vs. Redis cached layers). CI/CD Quality Gates: Embed tests directly into orchestration pipelines, establishing parallel execution paths, reliable post-deployment smoke test strategies, and clear reporting quality gates. Requirements Core Automation Stack: Strong, senior-level hands-on experience with Playwright (TypeScript / JavaScript) , dynamic async patterns, and custom fixtures. API Testing: Proven experience in API automation, contract testing concepts, and debugging systems connected via shared infrastructure caching tiers. CI/CD Integration: Practical experience working with major automation runners ( GitHub Actions, GitLab CI, Jenkins, or CircleCI ). Methodologies: In-depth knowledge of visual regression tooling, smoke test design for live deployments, and managing test isolation. Languages: English at a minimum B2 level (clear technical and collaborative writing). Nice to Have AI-Assisted QA: Experience leveraging AI-powered tools for automated test generation, test deduplication, flaky test triage, or test coverage expansion.

🏢 Summary: Senior Backend Engineer role focused on designing and scaling a high-throughput, event-driven platform. The position centers on building and optimizing large-scale event processing services and APIs in distributed systems. It involves solving complex scalability and reliability challenges in a massive-scale environment. 🗂️ Requirements: Senior-level experience in backend development, Strong Python expertise, Experience scaling message queue systems, Experience with distributed systems and microservices architecture, Proven track record building high-throughput backend services, Experience designing scalable and fault-tolerant systems, Ability to implement and optimize APIs 📃 Skills: Python, Azure, ServiceBus, StorageQueues, EventHubs, Microservices, DistributedSystems, APIs, EventDriven, EventSourcing, Streaming, Observability, Monitoring 🏢 Description: Location: Remote Type: Full-time Level: Senior Duration: 4 months Start: ASAP We are looking for an experienced Senior Backend Engineer to join a team responsible for building and scaling a high-throughput, event-driven platform operating at massive scale. Your primary focus will be the event processing backbone — designing, developing, and optimizing services that handle large volumes of messages reliably and efficiently. You will work closely with architects and other senior engineers to implement APIs that expose data and support advanced triage and processing workflows. This role is ideal for someone who enjoys solving hard scalability problems , working with distributed systems, and building resilient backend services that operate under real-world load. Responsibilities Design and build backend services responsible for large-scale event processing Optimize and scale message-based systems to handle high throughput and reliability requirements Implement APIs defined by system architects to expose data and collect processing results Collaborate with cross-functional teams to improve platform performance and resilience Contribute to architectural decisions around scalability, fault tolerance, and observability Core Skills Strong experience with Python as a primary backend language Deep expertise in scaling message queue systems (e.g. Azure Service Bus, Storage Queues, Event Hubs or similar) Solid understanding of microservices architecture and distributed systems Proven experience building high-throughput, resilient backend services Strong problem-solving skills and ability to work with complex systems Highly Desirable Experience with event-driven or event sourcing architectures Background in data processing frameworks or streaming systems Experience building platforms related to observability, monitoring, or large-scale event management Familiarity with designing systems for fault tolerance and graceful degradation What we offer Work on technically challenging systems operating at very large scale High level of autonomy and real influence on system architecture Collaboration with experienced engineers in a mature engineering environment Competitive compensation and flexible working model Project with strong technical ownership

🏢 Summary: Senior Backend Engineer role focused on transforming a mission-critical e-commerce domain supporting subscriptions and purchasing journeys for millions of users. The position centers on migrating a monolithic system to scalable microservices, improving performance and reliability, and shaping the future architecture of a global platform. Engineers will work with event-driven systems and modern AI tools while owning solutions end-to-end. 🗂️ Requirements: 5+ years of professional backend engineering experience, Strong experience designing and operating microservices architectures, Experience modernising legacy systems and decomposing monoliths, Solid understanding of distributed systems and scalable backend design, Commercial experience with Go, Java, Kotlin or Scala, Hands-on experience with Kafka or similar event-streaming technologies, Hands-on experience with PostgreSQL, Hands-on experience with Docker and Kubernetes, Experience with CI/CD pipelines, Practical experience using AI coding assistants (Claude Code, Cursor, Copilot or similar), Ability to review and validate AI-generated code, Comfortable owning solutions from idea to production 📃 Skills: Go, Golang, Java, Kotlin, Scala, Kafka, PostgreSQL, Docker, Kubernetes, CI/CD, GraphQL, DDD, TDD, BDD, Microservices 🏢 Description: Join a global e-commerce technology organisation serving millions of customers across multiple international markets. As a Senior Backend Engineer, you will become part of a team responsible for one of the company's most critical customer-facing domains. The platform supports customer subscriptions, plans, and purchasing journeys used daily by millions of users. This is not a maintenance role. The team is actively transforming a mission-critical domain, modernising legacy systems, reducing technical debt, and building the next generation of scalable services that will support future growth. You will play a key role in migrating core functionality from a monolithic architecture to modern microservices while helping shape the future architecture of a global platform. What You'll Do Build & Scale Core Services Design, develop, and maintain scalable backend services within a distributed microservices architecture. Build reliable systems supporting millions of customer interactions. Improve performance, reliability, and scalability across critical customer-facing services. Drive Modernisation Lead the migration of key business domains from monolithic systems to modern microservices. Reduce technical debt and improve long-term maintainability. Design solutions that support future platform growth. Shape Architecture Participate in architecture discussions and technical decision-making. Design orchestration layers supporting complex customer journeys and business processes. Help define engineering standards and best practices. Work with Event-Driven Systems Build and operate services powered by event-driven architectures. Work extensively with Kafka and real-time lifecycle events. Design resilient and observable distributed systems. Raise Engineering Standards Conduct code reviews and support other engineers through technical guidance. Promote best practices across software development, testing, deployment, and observability. Contribute to a strong culture of ownership and continuous improvement. AI-Powered Engineering Use modern AI tools and coding agents throughout the software development lifecycle. Leverage AI for onboarding, architecture exploration, implementation, testing, debugging, and productivity improvements. Apply engineering judgement to validate, verify, and safely integrate AI-generated outputs. What We're Looking For Backend Engineering Expertise 5+ years of professional backend engineering experience. Strong experience designing and operating microservices architectures. Experience modernising legacy systems and decomposing monoliths. Solid understanding of distributed systems and scalable backend design. Technical Stack Commercial experience with Go (Golang), Java, Kotlin or Scala Engineers coming from a JVM background should be open to working in a Go-driven environment. Hands-on experience with: Kafka or similar event-streaming technologies PostgreSQL Docker Kubernetes CI/CD pipelines Product & Ownership Mindset Comfortable owning solutions from idea through production. Strong problem-solving skills and ability to make technical trade-offs. Experience collaborating with product, business, and engineering stakeholders. AI Fluency Practical experience using AI coding assistants such as Claude Code, Cursor, Copilot, or similar tools. Understanding of how context, prompts, constraints, and validation influence AI-generated outputs. Ability to critically review and verify AI-generated solutions. Nice to Have Experience with subscription-based products. Experience in e-commerce environments. GraphQL knowledge. Familiarity with DDD, TDD, and BDD practices. What We Offer Opportunity to build systems used by millions of customers globally. High-impact engineering work with significant architectural ownership. International collaboration across distributed engineering teams. End-to-end ownership from idea to production. Hybrid working model (3 days per week in the Warsaw office). B2B cooperation model. 30 days of paid annual leave. Modern office located in Warsaw city centre. Continuous learning and professional growth opportunities.

🏢 Summary: Senior QA Engineer role focused on end-to-end testing of integration systems and data platforms built on event-driven architecture (Kafka) within global supply chain processes. The position involves data validation, analysis of complex integrations, and gradual ownership of test automation in an international Agile environment. Remote-first collaboration with cross-functional teams. 🗂️ Requirements: Several years of experience as Senior QA Engineer, Experience in testing event-driven systems, Practical experience with Kafka, Experience with data platforms, data pipelines or integration systems, Knowledge of component, integration, system and E2E testing methodologies, Experience working in Agile/Scrum, Proficiency with JIRA, Proficiency with TestRail or Xray, Strong analytical skills in data validation and mapping analysis 📃 Skills: Kafka, JIRA, TestRail, Xray, Java, Agile, Scrum, E2E, SQL 🏢 Description: Nasz Klient to międzynarodowa organizacja rozwijająca nowoczesne rozwiązania technologiczne dla branży logistycznej i łańcucha dostaw. Projekt koncentruje się na rozwoju i testowaniu platform danych oraz systemów opartych o architekturę zdarzeniową (event-driven), wspierających globalne procesy spedycyjne. Szukamy doświadczonej osoby na stanowisko Senior QA Engineer , która nie tylko zadba o jakość testów, ale również będzie aktywnie analizować dane, procesy biznesowe i zależności między systemami. TRYB PRACY: 100% zdalnie (1 x w miesiącu przyjazdy do biura w Warszawie) CZYM BĘDZIESZ SIĘ ZAJMOWAĆ? Prowadzeniem kompleksowych działań testowych end-to-end dla systemów integracyjnych oraz platform danych, obejmujących przepływy biznesowe i techniczne Projektowaniem, rozwijaniem i utrzymywaniem scenariuszy testowych dla architektury event-driven (w szczególności systemów opartych o Kafka Analizą i walidacją mapowań danych, transformacji oraz jakości danych w złożonych środowiskach integracyjnych Diagnozowaniem defektów poprzez analizę przepływów integracyjnych, logiki mapowań oraz zachowania komponentów systemu Współpracą z zespołami developerskimi, ekspertami domenowymi i biznesem w środowisku międzynarodowym Wspieraniem oraz stopniowym przejmowaniem inicjatywy w obszarze automatyzacji testów CZEGO OD CIEBIE OCZEKUJEMY? Minimum kilkuletnie doświadczenie jako tester/ka (Senior) , w tym prowadzenie lub koordynowanie działań testowych Doświadczenie w branży supply chain/logistyki (mile widziane systemy freight forwarding ) Praktyczna znajomość testowania systemów event-driven, w szczególności Kafka Doświadczenie z platformami danych , pipeline’ami lub systemami integracyjnymi Znajomość metodologii testowania (komponentowe, integracyjne, systemowe, E2E) Praca w środowisku Agile/Scrum oraz dobra znajomość narzędzi takich jak JIRA oraz TestRail/Xray Bardzo dobre umiejętności analityczne oraz komunikacyjne Nice to have: Doświadczenie lub chęć rozwoju w automatyzacji testów (np. Java ) Znajomość lub ekspozycja na customowe frameworki testowe Doświadczenie w walidacji dużych transformacji danych i specyfikacji mapowań DLACZEGO WARTO? Długoterminowa współpraca w modelu B2B – kontrakt na min. 12 miesięcy z możliwością przedłużenia Realny wpływ na jakość i rozwój globalnych systemów data & supply chain Możliwość pracy w międzynarodowym środowisku oraz współpracy z ekspertami domenowymi Elastyczny model pracy (głównie zdalnie + sporadyczne wizyty w biurze) Kierunek rozwoju w stronę automatyzacji testów (docelowo większy udział automatyzacji w projekcie) Dziękujemy za wszystkie zgłoszenia! Skontaktujemy się z wybranymi osobami.

🏢 Summary: Full Stack Engineer role in the banking sector focused on delivering production-ready solutions within a scalable microservices architecture. The position combines backend application design and frontend development, emphasizing RESTful APIs, PostgreSQL databases, and automated CI/CD pipelines. This is a long-term B2B engagement with a hybrid work model and collaboration across global engineering teams. 🗂️ Requirements: Proven commercial experience in backend application design and enterprise deployment, Strong experience working within microservices architecture, Hands-on experience building and deploying RESTful APIs, Strong proficiency in PostgreSQL schema design and querying, Experience supporting automated CI/CD production releases, Full professional English proficiency 📃 Skills: Java, ReactJS, PostgreSQL, REST, Microservices, CI/CD, Docker, Kubernetes, GCP 🏢 Description: co.brick talents — powered by AI, powered by people. Join a global engineering team within the banking sector focused on delivering high-quality production code through a scalable microservices architecture. In this Full Stack role, you will balance backend application design and frontend development while fostering a modern, high-performing engineering culture. You will collaborate across regional boundaries, address technical risks, and drive automated deployment practices to push changes to production frequently. Details Engagement Details Contract Type: B2B Allocation: Full-time workload. Start Date: ASAP / 1-month notice period acceptable. Duration: Long-term (> 12 months). Work Model: Hybrid – 6 days per month required in the Kraków office (flexible scheduling, including the option to complete all 6 days in a single block). Recruitment Process: 2 rounds (Technical Interview & Live Coding). Responsibilities Hands-on Delivery: Write, review, and ship production-ready full-stack code aligned with a distributed microservices structure. API & Database Engineering: Design, develop, and deploy robust RESTful APIs and write schemas for relational databases. Cross-Functional Collaboration: Partner with a global engineering and business network, removing delivery impediments and proactively flagging risks to program management. Process Optimization: Monitor business, engineering, and non-functional project requirements to eliminate technical debt and process inefficiencies. Requirements Senior Engineering Baseline: Proven commercial track record in backend application design, development, and enterprise deployment. Architecture: Strong experience implementing and maintaining code within a microservices ecosystem. CI/CD Mindset: Demonstrated ability to support frequent, automated production releases. API Development: Extensive hands-on experience building and deploying RESTful APIs. Database Skills: Strong proficiency in schema design and querying within PostgreSQL databases. Languages: Full professional English proficiency (the sole project language). Nice to Have Solid experience with Java , preferably using recent versions of the language. Practical familiarity with frontend development using ReactJS . Understanding of cloud-native systems, containerization, and orchestration technologies ( Docker, Kubernetes, and GCP ). Prior domain experience working within the financial or fintech/banking sector. Polish B2+