Senior Load Tester

🏢 Summary: Office-based QA Automation Engineer role focused on building and maintaining automated UI, API, and end-to-end tests for a casino gaming platform. The position involves owning CI/CD test pipelines, ensuring high test coverage, and performing API, WebSocket, and performance testing. The role requires close collaboration with developers and proactive quality ownership in a fast-paced environment. 🗂️ Requirements: 5+ years of QA automation experience, Strong hands-on experience with Playwright or Cypress or Selenium, Strong TypeScript skills, Strong JavaScript skills, Experience building and maintaining CI/CD test pipelines, Experience in API testing including contract testing, Experience in WebSocket testing, Experience with load testing tools (k6 or Gatling or JMeter), Experience with Git, Fluent English (B2+ level) 📃 Skills: TypeScript, JavaScript, Playwright, Cypress, Selenium, WebSocket, k6, Gatling, JMeter, Git, CI/CD 🏢 Description: Employer: International cassino games studio Location: Warsaw (4 days from the office, 1 day remotely) Salary: 5 000 - 6 650 EUR on B2B Cooperation model: B2B Start date: ASAP Recruitment process: 3 online interviews Technology stack: Typescript, Javascript, Cypress or Selenium or Playwright, WebSocket Your role is to: -> Write and maintain automated tests across UI, API, and end-to-end flows; -> Build reliable test pipelines and keep them running cleanly within CI/CD; -> Dig into test failures and get to the root cause — not just mark them as flaky and move on; -> Work with developers to understand how features are built and test them properly; -> Cover API flows thoroughly including chained requests, contracts, and WebSocket behavior; -> Run performance and load tests on critical platform areas and flag what needs fixing; -> Keep test coverage healthy and proactively fill gaps as the product evolves; Your skills and experiences: -> 5+ years of QA automation experience with real, hands-on work to show for it; -> Strong with Playwright, Cypress, or Selenium — you've built with them, not just maintained them; -> Solid TypeScript and JavaScript skills, writing code that's clean and easy to maintain; -> Comfortable owning CI/CD test pipelines end to end; -> Good API testing experience including contract and WebSocket testing; -> Familiar with load testing tools like k6, Gatling, or JMeter; -> Fluent with Git and working within agile teams; -> You work independently and take ownership of your output; -> You care about quality and it shows in your work; -> You communicate clearly and flag issues before they become problems; -> You're collaborative — you work well with developers and product alike; -> Fluent English - at least B2+ level;

🏢 Summary: Senior QA Automation Lead role focused on designing, implementing, and maintaining automated test frameworks for UI, API, end-to-end, and performance testing within CI/CD pipelines. The position includes leading a small QA team and owning test coverage, reliability, and defect resolution across product areas. B2B contract, office-based in Warsaw, with responsibility for integrating automated testing into the development lifecycle. 🗂️ Requirements: 6+ years QA automation experience, Ownership of test automation codebase, Hands-on experience with Playwright, Cypress or Selenium, Proficiency in JavaScript or TypeScript, Experience with CI/CD-integrated test pipelines, API testing experience, Experience testing RESTful APIs and WebSockets, Experience with Git workflows 📃 Skills: Playwright, Cypress, Selenium, JavaScript, TypeScript, Jenkins, Git, Postman, Supertest, REST, WebSocket, CI/CD 🏢 Description: Employer: International cassino games studio Location: Warsaw (4 days from the office, 1 day remotely) Salary: 5950 - 7600 EUR on B2B Cooperation model: B2B Start date: ASAP Recruitment process: 2 online interviews and recruitment task Technology stack: Playwright or Cypress or Selenium, GIT, Jenkins, Javascript or Typescript Your role is to: -> Own the design, implementation, and maintenance of automated test frameworks covering UI, API, and end-to-end testing; -> Lead a small team of QA engineers, providing hands-on guidance, code reviews, and day-to-day direction; -> Take responsibility for test coverage across assigned product areas, ensuring regressions are caught before they reach production; -> Build and maintain performance test scripts that are reusable, version controlled, and easy to update as the product changes; -> Integrate and maintain automated test suites within CI/CD pipelines, owning the feedback loop for your team; -> Define and enforce testing standards, processes, and documentation within the squad; -> Collaborate with developers and product managers to review requirements and translate them into thorough test plans; -> Own defect triage and test failure analysis, coordinating directly with engineers to drive resolution; -> Continuously improving test reliability, speed, and coverage, proactively flagging risks to engineering leads; Your skills and experiences: -> 6+ years of QA automation experience, with demonstrated ownership of a test automation codebase; -> Solid hands-on experience with frameworks such as Playwright, Cypress, or Selenium; -> Strong proficiency in TypeScript and/or JavaScript for writing and maintaining test scripts; -> Proven experience owning CI/CD-integrated test pipelines (GitHub Actions, Jenkins, or similar); -> Solid API testing experience using tools such as Postman or Supertest; -> Familiarity with RESTful API and WebSocket testing for real-time features; -> Good understanding of Git workflows and agile delivery practices; -> Strong communicators who can represent quality concern clearly to developers and product stakeholders; -> Ownership mentality — takes accountability for test outcomes and drives issues through to resolution; -> Organized and methodical, able to manage workload across multiple features and release cycles; -> Collaborative team lead who enjoys growing junior engineers and raising the quality bar;

🏢 Summary: Office-based Frontend Developer role focused on building responsive and scalable web applications for an online casino platform using modern and legacy frontend technologies. The position involves close collaboration with backend and design teams to deliver high-performance, user-friendly interfaces. B2B contract with competitive salary and immediate start. 🗂️ Requirements: Extensive experience with React, NextJS and jQuery, Strong knowledge of TypeScript and Vanilla JavaScript, Experience with Webpack or Vite, Experience with state management libraries (Redux or MobX), Experience integrating RESTful APIs and WebSockets, Experience building scalable, high-performance frontend applications, Knowledge of Git and CI/CD pipelines, Experience with automated testing frameworks, Fluent English (B2+ level) 📃 Skills: React, NextJS, jQuery, JavaScript, TypeScript, Redux, MobX, REST, WebSockets, Webpack, Vite, Git, CI/CD 🏢 Description: Employer: International cassino games studio Location: Office-based position in central Warsaw Salary: up to 6600 EUR net Cooperation model: B2B Start date: ASAP Recruitment process: 2 online interviews and recruitment task Technology stack: React, JS, TypeScript, Redus, RestfulAPI, NextJS Your role is to: -> Develop responsive and scalable frontend applications using Jquery, NextJS, React; -> Collaborate with backend engineers to define and integrate APIs and services that provide smooth user experience; -> Work with Webpack and or Vite for efficient bundling and build processes, optimizing the delivery of frontend assets; -> Work with Typescript and Vanilla JS; -> Ensure the platform adheres to high standards of usability and performance; -> Work closely with designers to ensure UI/UX designs are fully implemented and optimized for the user; Your skills and experiences: -> Extensive experience with modern and legacy frontend frameworks such as Jquery, NextJS, React; -> Expertise with Webpack/Vite for module bundling and build optimizations; -> Strong knowledge of TypeScript and its use in frontend development; -> Proven experience in building scalable, high-performance applications that provide smooth user experience; -> Experience with state management libraries such as Redux or MobX or others; -> Familiarity with RESTful API integration and WebSockets for real-time communication; -> Knowledge of version control systems (e.g., Git), CI/CD pipelines, and automated testing frameworks; -> Excellent communication and collaboration skills, with the ability to bridge the gap between design and development; -> Analytical mindset with a focus on performance optimization and solving complex problems; -> Ability to manage multiple tasks and prioritize effectively in a fast-paced environment; -> Fluent English - at least B2+ level; If interested, please apply safely through this portal (application rules are in accordance with GDPR). Employment agency Nr 17138.

🏢 Summary: Test Automation Lead role in a banking project focused on defining and executing automation strategy for UI and API testing within a hybrid work model. The position involves building scalable automation frameworks, integrating tests into CI/CD pipelines, and leading a team in best practices. The role also covers cross-system integration, test data management, and collaboration in an international Agile environment. 🗂️ Requirements: 5+ years hands-on test automation experience (UI and API REST/SOAP), 5+ years experience with .NET or Java, Experience with Playwright or Selenium, Experience designing test automation frameworks, SQL for automated testing, CI/CD integration experience (Bamboo, Jenkins or Azure DevOps), Experience with Git-based workflows, Agile experience with Jira, Fluent English 📃 Skills: .NET, Java, Playwright, Selenium, REST, SOAP, SQL, Bamboo, Jenkins, AzureDevOps, Git, Bitbucket, GitHub, GitLab, Jira 🏢 Description: PROJECT INFORMATION Industry : Banking Remuneration : up to 140 PLN/h netto + VAT (B2B) Work model: hybrid (3/week in Gdańsk or Gdynia office) Main Responsibilities: Lead, coach, and mentor the team in test automation best practices. Define and evolve the team's test automation strategy, including roadmap and tooling. Design and implement scalable automation frameworks for UI and API testing. Partner with SMEs to define quality approaches and test coverage. Integrate automated testing into CI/CD pipelines. Conduct automation feasibility assessments and recommend automation levels. Improve test coverage and execution speed continuously. Manage test data dependencies and cross-system integration flows. Collaborate in an international setup and contribute to QA communities. Key Requirements: 5+ years of hands-on test automation experience (UI and API: REST/SOAP) . 5+ years with .NET (preferred) or Java . Experience with Playwright or Selenium . Understanding of test automation framework design. SQL experience for automated tests. CI/CD integration experience (Bamboo/Jenkins/Azure DevOps). Git-based workflows experience (Bitbucket/GitHub/GitLab). Agile experience with Jira . Strong leadership and problem-solving skills . Fluent in English. Nice to Have: Experience in banking/financial services . Experience with Temenos T24 . Background in large enterprise test environments . Experience with AI-assisted coding tools for test script generation. Exposure to LLM-based test automation techniques.

🏢 Summary: Fullstack Developer role focused on building and evolving Java-based microservices and modern Angular Single Page Applications within an event-driven architecture. The position emphasizes backend development with Spring Boot, Kafka integration, and secure, scalable solutions, while contributing to CI/CD pipelines and frontend best practices. Work involves close collaboration on solution design, security implementation, and continuous improvement in an Agile environment. 🗂️ Requirements: Strong hands-on experience with Java 17–21, Strong experience with Spring Boot 3.x, Experience with microservices architecture, Experience with Kafka in event-driven or messaging systems, Strong practical experience with SQL and Oracle, Experience or strong understanding of Redis, Experience with Domain Driven Design, Experience with Node.js, Experience with TypeScript, Experience building Single Page Applications with Angular, Strong knowledge of Angular architecture and best practices, Strong understanding of web application security, Practical knowledge of OIDC and OAuth2, Experience with Git, Experience working in Agile methodologies 📃 Skills: Java, Spring, SpringBoot, Microservices, Kafka, SQL, Oracle, Redis, DDD, Node.js, TypeScript, Angular, SPA, Security, OIDC, OAuth2, Git, Agile 🏢 Description: Location: Hybrid work model – 2-3 days per week from the Warsaw office Salary: 160 – 170 PLN net/h (B2B via Experis) Tasks: •    Design, develop, and maintain fullstack applications with a strong emphasis on backend and modern frontend architectures •    Build high-quality, maintainable, secure, scalable, and testable software aligned with business requirements •    Develop and evolve Java-based microservices using Spring Boot •    Contribute to Single Page Applications development ensuring frontend best practices •    Collaborate with business and technical stakeholders to clarify and refine functional and non-functional requirements •    Participate in solution design pre-project studies and technical decision-making •    Integrate systems using event-driven architectures and streaming platforms •    Optimize and maintain existing codebases •    Implement execute and maintain automated tests and CI/CD pipelines •    Ensure application security including identity management and secure authentication flows •    Maintain and update technical documentation •    Participate in internal and external developer communities to share best practices •    Continuously improve skills in modern technologies and software engineering practices Requirements: Backend & Architecture •    Strong hands-on experience with Java 17–21 focusing on modern Java •    Strong experience with Spring Boot 3.x and microservices architectures •    Required experience with Kafka in event-driven or messaging-based systems •    Strong practical experience with SQL using Oracle •    Experience or strong understanding of Redis •    Experience with Domain Driven Design Frontend •    Required experience with Node.js •    Required experience with TypeScript •    Solid experience building Single Page Applications using Angular •    Strong knowledge of Angular best practices architecture and maintainability •    Experience with SPA development •    Webpack knowledge is a nice to have Security •    Strong understanding of web application security •    Practical knowledge of OIDC and OAuth2 protocols •    Experience with identity management platforms as a strong advantage •    Awareness of OWASP principles certifications are a plus DevOps & Tooling •    Required experience with Git •    Experience with CI/CD pipelines GitLab CI and Jenkins as a nice to have •    Maven knowledge as a nice to have •    Docker and Kubernetes knowledge as a nice to have •    Experience with IntelliJ and VS Code •    Knowledge of Jira and Confluence •    Python knowledge as a nice to have •    Practice with AI based code generation tools as a nice to have Methodologies & Ways of Working •    Experience working in Agile methodologies such as Scrum and Kanban •    DevOps mindset and practices •    Ability to collaborate in distributed international teams Offer: •    Multisport card •    Private healthcare •    Access to an e‑learning platform •    Group life insurance

🏢 Summary: Hybrid Backend Developer role focused on modernizing and optimizing backend services, upgrading core technologies, and improving authentication and data pipelines. The project involves Java/Scala development, Play Framework upgrades, Spark-based batch processing, and OAuth migration. B2B contract with fast recruitment process and onboarding in Sweden. 🗂️ Requirements: Hands-on experience with production Java services, Hands-on experience with production Scala services, Familiarity with Play Framework internals, Experience with Spark for pipeline-heavy work, Experience with OAuth-based authentication patterns, Fluent English for project communication 📃 Skills: Java, Scala, Play, Spark, OAuth, JDK, GenAI, Gradle, CI/CD, React, TypeScript 🏢 Description: 🌍 Work mode: hybrid –  3 days from the Warsaw office. 🔍 Onboarding : 2 weeks in Malmo, Sweden. ⏰ Start : 1 week notice period, August 3rd at the latest. 📝 Contract : B2B > up 195 zl/h. ⚙️ Recruitment process : 1 meeting with the client. ⏳ Duration : > 3 months contracts + extensions. 📕Project language : English. 💼 Industry : Technology. 💻 Workload : Full time (40 hours per week). Summary: The Backend Developer role is aimed at enhancing and modernizing backend services and pipelines within the organization. This position primarily focuses on improving system performance, ensuring robust authentication mechanisms, and implementing automation to streamline processes. Main Responsibilities: Modernise backend services and pipelines by upgrading to the latest JDK, Scala 3.x, and Play Framework 3.x. Apply GenAI tooling to automate code transformations, dependency resolution, and compatibility fixes, producing reusable tools and documentation. Migrate authentication frameworks from legacy APIs to OAuth-based solutions across various backend services. Replace multiple data stores with a single versioned table, creating Spark/Java batch pipelines for backfill/migration and extending Scala/Play backends. Key Requirements: Hands-on experience with production Java/Scala services . Familiarity with Play Framework internals. Experience with Spark for pipeline-heavy work. Comfortable with OAuth-based authentication patterns. Nice to Have: Familiarity with React/TypeScript. For DevOps-leaning candidates: experience with Gradle, scripting, and CI/CD pipelines. Other Details Tools/Methodologies: Java, Scala, Play Framework, Spark, OAuth.

🏢 Summary: Offer for a Software Development Engineer in Test focused on building and maintaining automated test frameworks for APIs, databases, and UI layers in a financial platform. The role emphasizes integration testing, AI-enhanced test optimization, and embedding automation into CI/CD pipelines while collaborating with US-based teams. Position requires evening work hours and operates under a B2B contract model. 🗂️ Requirements: 4+ years of experience in software testing with strong focus on automation, Strong expertise in API, integration, and end-to-end UI testing, Experience with backend and middle-tier testing involving databases and external services, Proficiency in JavaScript, TypeScript, Python, Java, or C#, Experience designing scalable and reusable test automation frameworks, Experience integrating automated tests into CI/CD pipelines, Hands-on experience with automation testing tools, Familiarity with AI-based tools for test optimization and bug analysis, Experience working in Agile/Scrum environments, Availability to work evening hours and collaborate with US team 📃 Skills: JavaScript, TypeScript, Python, Java, C#, Postman, Rest-Assured, Selenium, Cypress, Playwright, Jenkins, GitLab, GitHub, Azure, CI/CD, APIs, SQL, AI, Agile, Scrum 🏢 Description: *We are looking for Poland based candidate. At Capco Poland, we’re not just another consultancy - we’re the spark behind digital transformation in the financial world. As a global leader in technology and management consulting, we thrive on helping clients tackle the toughest challenges across banking, payments, capital markets, wealth, and asset management. ROLE OVERVIEW: We are seeking a Software Development Engineer in Test with expertise in automation testing across backend APIs, databases, and front-end systems (user and admin interfaces). The ideal candidate will leverage the latest tools, frameworks, and AI technologies to ensure the quality and performance of our platform while collaborating with cross-functional teams to streamline testing processes. You'll cooperate closely with US team, therefore working hours will be in the evening. KEY RESPONSIBILITIES: Test Automation Development Develop and maintain robust automated test suites focusing on API testing, integration testing, and UI testing for both user-facing and admin platforms Design reusable and scalable test automation frameworks. Integrate AI capabilities into the automation framework to optimize test strategies and improve efficiency. Integration Testing Validate API endpoints, data integrity, and middleware interactions between APIs, the database, and third-party systems. Collaboration & Process Improvement Work closely with developers, DevOps, and product teams to understand system architecture, identify critical paths, and ensure thorough test coverage. Contribute to Continuous Integration/Continuous Deployment (CI/CD) pipelines to automate test execution on code commits and deployments. Coverage Analysis & Metrics Develop automated reporting tools to analyze test coverage across integration, UI, and backend layers, focusing on regression, error handling, and other critical categories. Use automation scripts to continuously track coverage gaps and ensure the automation suite addresses high-risk areas. Provide data-driven insights from automated test results to refine testing priorities and improve overall quality REQUIRED QUALIFICATIONS: 4+ years in software testing, with significant experience in automation testing. Strong understanding of API testing, integration testing, and end-to-end UI testing. Proficiency in testing tools such as Postman, Rest-Assured, Selenium, Cypress, Playwright, or similar. Experience with middle-tier testing, including APIs interacting directly with databases and external services. Proficient in JavaScript, Python, Java, or C#, with a strong preference for JavaScript/TypeScript-based frameworks. Experience integrating automated tests into CI/CD pipelines using tools like Jenkins, GitLab CI, GitHub Actions, or Azure DevOps. Familiarity with AI-based tools for bug analysis, test optimization, and issue consolidation. Excellent analytical and problem-solving skills to identify testing bottlenecks and propose solutions. Strong verbal and written communication skills for collaboration with cross-functional teams. Background in Agile/Scrum development environments. We offer a flexible collaboration model based on a B2B contract, with the opportunity to work on diverse projects. Recruitment Process: HR Interview with the recruiter Technical Interview Client Interview Feedback and offer

🏢 Summary: Hybrid QA Automation role focused on testing RESTful APIs, creating automated test suites in Python and Robot Framework, and collaborating within Agile scrum teams. The offer includes long-term B2B cooperation with work from offices in Gdańsk, Gdynia, Warsaw, or Łódź three times per week. 🗂️ Requirements: Experience with RESTful API testing, Strong Python programming skills, Hands-on experience with Robot Framework, Knowledge of Jenkins, Knowledge of Git, Knowledge of Docker, Knowledge of Kubernetes, Understanding of QA processes, ISTQB Foundation Level knowledge or equivalent experience, English communication skills 📃 Skills: Python, Robot, REST, Jenkins, Git, Docker, Kubernetes, ISTQB, Java 🏢 Description: General info: - Model of work: hybrid (3x per week work from office Gdańsk/ Gdynia/ Warsaw/ Łódź) - Type of contract: B2B contract, long-term cooperation - Rate: 140 PLN net + vat/ hour Summary: The primary goal of this role is to enhance the quality of software products by executing tests on RESTful APIs, developing automated test suites, and collaborating with team members in an Agile environment. Main Responsibilities: - Work closely in a scrum team with developers, analysts and stakeholders to ensure high quality. - Test and validate RESTful APIs. - Analyse requirements from a testing point of view. - Plan, design and execute test cases. - Build and maintain automated test suites using Python and Robot Framework. - Provide test results. - Participate in testing team activities and contribute to organizational quality initiatives. Key Requirements: - Proven experience with RESTful API testing tools and methodologies. - Strong Python programming skills for test development. - Hands-on expertise with Robot Framework automation. - Familiarity with modern DevOps tools (Jenkins, Git, Docker, K8s). - ISTQB Foundation Level knowledge (or equivalent practical experience). - Knowledge of QA processes (both manual and automated). - Excellent communication skills in English (spoken and written). Nice to Have: - Understanding and basic knowledge of Java code. - Growth mindset with passion for continuous learning and improvement. - Team player who actively contributes to collective success and efficiency improvements.

🏢 Summary: Backend Developer role focused on modernizing and optimizing backend services and data pipelines, including technology upgrades, authentication migration, and automation initiatives. The position involves working with Java/Scala ecosystems, Spark pipelines, and OAuth-based security in a hybrid model with onboarding in Sweden. B2B contract with competitive hourly rate and English as the project language. 🗂️ Requirements: Hands-on experience with production Java services, Hands-on experience with production Scala services, Familiarity with Play Framework internals, Experience with Spark for data pipelines, Experience with OAuth-based authentication patterns, Availability for hybrid work (3 days/week in Warsaw or Cracow), Availability for 2-week onboarding in Malmo, Sweden, Fluent English 📃 Skills: Java, Scala, Play, Spark, OAuth, Gradle, CI/CD, React, TypeScript 🏢 Description: 🌍 Work mode: hybrid –  3 days from the Warsaw OR Cracow office. ⏳ Duration : > 3 months contracts . 🔍 Onboarding : 2 weeks in Malmo, Sweden. ⏰ Start : August 3rd at the latest. 📝 Contract : B2B > up 200 zl/h. ⚙️ Recruitment process : 2 meetings. 📕Project language : English. 💼 Industry : Technology. 💻 Workload : Full time (40 hours per week). Summary: The Backend Developer role is aimed at enhancing and modernizing backend services and pipelines within the organization. This position primarily focuses on improving system performance, ensuring robust authentication mechanisms, and implementing automation to streamline processes. Main Responsibilities: Modernise backend services and pipelines by upgrading to the latest JDK, Scala 3.x, and Play Framework 3.x. Apply GenAI tooling to automate code transformations, dependency resolution, and compatibility fixes, producing reusable tools and documentation. Migrate authentication frameworks from legacy APIs to OAuth-based solutions across various backend services. Replace multiple data stores with a single versioned table, creating Spark/Java batch pipelines for backfill/migration and extending Scala/Play backends. Key Requirements: Hands-on experience with production Java/Scala services . Familiarity with Play Framework internals. Experience with Spark for pipeline-heavy work. Comfortable with OAuth-based authentication patterns. Nice to Have: Familiarity with React/TypeScript. For DevOps-leaning candidates: experience with Gradle, scripting, and CI/CD pipelines. Other Details Tools/Methodologies: Java, Scala, Play Framework, Spark, OAuth.

🏢 Summary: Senior Backend Developer role focused on Risks & Inspections and Safety Intelligence projects using .NET/C# and event-driven architecture. The position involves API and service development, domain modeling, integrations, and advanced testing practices in a hybrid work model based in Warsaw. The contract is full-time B2B for 12 months with possible extension and requires English proficiency. 🗂️ Requirements: Strong proficiency in .NET, Strong proficiency in C#, Experience in API development, Experience in service implementation, Familiarity with event-driven architecture, Expertise in domain modeling, Knowledge of tenant-aware data management, Experience with unit testing, Experience with integration testing, Experience with service testing, Experience with contract testing, English proficiency, Availability for hybrid work in Warsaw 📃 Skills: .NET, C#, API, React, MDM, Testing, Architecture, Queues, Idempotency, Integration, Authorization 🏢 Description: Work model: hybrid - 2 days a week, Warsaw office. Project language: English. Start: ASAP or 30 days. Remuneration: B2B > up to 42 EUR. FTE: full-time (40 hours per week) Business Travel: may travel once a year to France or the Netherlands. Equipment: laptop provided by the client Industry: Information Services. Recruitment process - 1 technical and soft skills meeting for 1-1.5 hours. We are seeking a skilled Backend Developer to join our innovative team focusing on Risks & Inspections and Safety Intelligence projects. The ideal candidate will possess robust experience in .NET / C# development, API and service implementation, and event-driven design patterns. You will play a critical role in ensuring effective domain modeling, integration with various services, and thorough testing methodologies. Main Responsibilities: Implementing strong .NET / C# development practices. Executing API and service implementations. Utilizing event-driven patterns such as events, queues, and idempotency. Developing comprehensive domain models and state management. Managing tenant-aware data access and conducting authorization checks. Integrating with MDM, workflow, audit, and various data services. Conducting unit, integration, service, and contract testing. Collaborating on specifications from structured requirements. Key Requirements: Strong proficiency in .NET / C#. Experience in API and service development. Familiarity with event-driven software architecture. Expertise in domain modeling and traceability. Knowledge of tenant-aware data management. Experience in effective testing methodologies across multiple domains. Nice to Have: Experience with React or similar frameworks. Understanding of spec-driven development practices. Capability to work in a contract-first delivery environment. Experience with cross-capability collaboration. Other Details: The role is designed for a new initiative with a senior-level requirement. Two 5-person teams are being built with a target start date within 3-4 weeks. The initial contract duration is 12 months, with potential extensions subject to a one-month notice period. The work is primarily remote, requiring office attendance two days a week. Candidates may need to travel to the Netherlands or France once during the year. English language proficiency is necessary, and equipment will be provided by the organization.