Senior .Net Developer with AWS experience

🏢 Summary: Senior .NET Backend Developer role focused on modernizing and expanding a complex international ticket sales platform built on microservices architecture and hosted on AWS. The position involves developing and maintaining scalable backend services, refactoring existing systems, and collaborating with cross-functional teams. The project uses the latest .NET technologies and supports integration with multiple external systems including GDS APIs. 🗂️ Requirements: 7+ years of backend development experience, 7+ years of commercial development experience on .NET platform, Strong proficiency in C# and .NET, Experience with RESTful WebAPI, Experience working with microservices architecture, Experience with unit testing frameworks (e.g., nUnit), Experience with mocking frameworks (e.g., Moq), Experience with dependency injection (e.g., Autofac), Experience with Entity Framework or NHibernate, Experience with DBMS systems, Understanding of Clean Code and OOP principles, Understanding of SOLID principles, Understanding of Agile methodology, Good spoken English 📃 Skills: .NET, C#, REST, WebAPI, Microservices, MSSQL, PostgreSQL, DynamoDB, AWS, nUnit, Moq, Autofac, EntityFramework, NHibernate, OOP, SOLID, Agile, JWT, OAuth2, OpenID 🏢 Description: Client The company is one of the regional leaders in the industry and is currently launching their new product, an international platform for ticket sales. The company's annual income exceeds 100 million euros. Join a great company, not merely an individual project Project overview The client uses various tools to reach their customers, such as a mobile app, a responsive web application, or communicating with them directly through the call center. The system is very complex, it must comply with a large number of regulations. We provide APIs for different clients including the biggest Global Distribution Systems (GDSes). Our client is committed to ensuring that the system will be as modern as possible. It is based on microservice architecture with the use of continuous integration, where a few hundred components operate independently of each other and can be used as they become available. This increases the modularity of the system and optimizes the use of the services. All components run on AWS. Team Several independent teams are working on the project. The goals of each team are limited to the part of the system they're working on. DataArt's specialists are working on the back-end in one of the teams. Position overview DataArt is currently helping to modernize and develop the IT system of an independent online retailer of railroad tickets. Technology stack .NET (always working with newest versions) microservices REST API MSSQL migrating to Postgres, DynamoDB Responsibilities Refactoring and expanding tickets selling system Develop, enhance, and maintain high-quality, scalable code Work collaboratively with cross-functional teams to support the implementation of new features and achieve their objectives Requirements 7+ years of backend development experience 7+ years of experience in commercial software development on the .NET platform Understanding of and experience working with C# Development experience with .NET Strong skills in Clean Code and OOP Knowledge of WebAPI Understanding of microservices architecture Experience with unit testing (like nUnit) and mocking frameworks (preferred Moq) Experience with dependency injection (preferred Autofac) Knowledge of Entity Framework or NHibernate Experience working with any DBMS system Understanding of SOLID principles Understanding of Agile development methodology Good spoken English Nice to have Knowledge of basic Authentication: types of Authentication, JWT, OAuth 2.0, OpenId Connect What We Offer: Vacation days : Up to 26 business days per year. 10 illness/special days off per year (fully paid, no medical papers needed) for all contract types Health and life insurance (Luxmed) MyBenefit platform with Multisport option Internal psychological support service English language classes from the first working day Access to external learning platforms : O’Reilly, LinkedIn Learning, Udemy, and a wide catalog of diverse internal training Flexible workplace : work from the office, from home, or choose a hybrid option Tech Skills Mentoring Program Opportunities to develop as a public speaker, mentor, or technical interviewer Fully paid idle (bench) when not involved in a project Certification reimbursement (AWS, GCP, Microsoft, etc.)

🏢 Summary: Development role focused on building and modernizing a large-scale, microservice-based ticket sales platform running on AWS. The position involves backend development in .NET 7/8, creating new features and refactoring existing components within an Agile environment. It offers strong engineering practices, continuous integration, and collaboration within multiple backend squads. 🗂️ Requirements: 3–5 years of backend development experience, 3–5 years of commercial development on .NET platform, Strong knowledge of C#, Practical experience with AWS, Understanding of Clean Code and OOP, Knowledge of SOLID principles, Experience with WebAPI, Understanding of microservices architecture, Experience with unit testing (e.g., nUnit), Experience with mocking frameworks (e.g., Moq), Experience with dependency injection (e.g., Autofac), Knowledge of Entity Framework or NHibernate, Experience with DBMS systems, Understanding of Agile methodology, Good spoken English 📃 Skills: .NET, C#, AWS, REST, WebAPI, Microservices, nUnit, Moq, Autofac, EntityFramework, NHibernate, Postgres, DynamoDB, MSSQL, RDS, CI 🏢 Description: Client Our client is one of the regional leaders in the industry and is currently launching a new product—an international platform for ticket sales. The company’s annual revenue exceeds €100 million. Join a great company, not merely an individual project Project overview The client uses various tools to reach their customers, such as a mobile app, a responsive web application, or communicating with them directly through the call center. The system is big and modular (microservice-based), complying with a number of regulations. We provide APIs for different clients including the biggest Global Distribution Systems (GDSes). We also provide solutions that are labeled by more than half of Train Operating Companies (TOCs) in the UK. Our client is committed to ensuring that the system will be as modern as possible. It is based on a microservice architecture with the use of continuous integration, where a few hundred components operate independently of each other and can be used as they become available. This increases the modularity of the system and optimizes the use of the services. All components run on AWS. The backend also includes .NET 7/8, and REST API is actively modernized to Cloud Native solutions (RDS like Postgres, DynamoDB) from MSSQL. The client has a policy to work with the latest technology, and they move to newer versions when they are available. Team Several independent teams are working on the project. The goals of each team are limited to the part of the system they're working on. DataArt's specialists are working on the backend in several teams. The project has a team of 30+ .NET developers who work on the backend, divided into smaller squads. Position overview DataArt is currently helping develop new features and modernize the IT system of an independent online railroad ticket retailer. The project is a great place to work and grow for Middle engineers due to strong engineering practices (microservices, clean code, extensive unit testing, CI, dozens of production deployments weekly, the Scout Rule, code reviews, and an Agile approach), continuous technical refactoring, and a senior team that is willing to learn and share experience. Responsibilities Development of new features, expanding the ticket-selling system + refactoring 80-90% backend development 20-10% team meetings Requirements From 3 to 5 years of backend development experience From 3 to 5 years of experience in commercial software development on the .NET platform Understanding of and experience working with C# Good understanding of Cloud - AWS practical experience mandatory Strong skills in Clean Code and OOP Understanding of SOLID principles Knowledge of WebAPI Understanding of microservices architecture Experience with unit testing (like nUnit) and mocking frameworks (preferred Moq) Experience with dependency injection (preferred Autofac) Knowledge of Entity Framework or NHibernate Experience working with any DBMS system Understanding of Agile development methodology Good spoken English What We Offer: Vacation days : Up to 26 business days per year. 10 illness/special days off per year (fully paid, no medical papers needed) for all contract types Health and life insurance (Luxmed) MyBenefit platform with Multisport option Internal psychological support service English language classes from the first working day Access to external learning platforms : O’Reilly, LinkedIn Learning, Udemy, and a wide catalog of diverse internal training Flexible workplace : work from the office, from home, or choose a hybrid option Tech Skills Mentoring Program Opportunities to develop as a public speaker, mentor, or technical interviewer Fully paid idle (bench) when not involved in a project Certification reimbursement (AWS, GCP, Microsoft, etc.)

🏢 Summary: Senior iOS Engineer role focused on modernizing and expanding a large-scale international ticket sales platform built on microservices and AWS. The position centers on developing and optimizing a mobile app through data-driven experimentation, A/B testing, and feature flag management. You will collaborate with cross-functional teams to deliver scalable, high-quality iOS solutions using modern Apple technologies. 🗂️ Requirements: 6+ years of iOS development experience with Swift, Hands-on experience with experimentation and R&D initiatives, Experience with Statsig or similar experimentation platforms, Strong knowledge of Clean Code and OOP principles, Proficiency in SwiftUI and UIKit, Experience with unit testing and working without dedicated QA engineers, Understanding of SOLID principles, Familiarity with Agile methodology, Good spoken English 📃 Skills: Swift, SwiftUI, UIKit, GCD, CoreData, SPM, TestFlight, Figma, Statsig, CUPED, Bayesian, AWS, Microservices, UnitTesting, UITesting, ABTesting, OOP, SOLID, Agile 🏢 Description: Client Our client is a regional leader in the transportation industry, with annual revenue exceeding €100 million, currently launching a new international ticket sales platform. Project overview The client engages users through a mobile app, responsive web application, and call center. The system is complex and must comply with numerous regulations. The system is built on a microservice architecture with continuous integration. Hundreds of components run independently on AWS, increasing modularity and optimizing service usage. Team Multiple independent teams contribute to different parts of the system. DataArt specialists are embedded across these teams. The mobile team is focused on shaping the future of the client’s mobile app—enhancing performance and evolving its functionality. Position overview DataArt is supporting the modernization and development of the IT system for an independent online railway ticket retailer. We hire for the company, not just the project, ensuring ongoing opportunities or paid idle time between assignments. In this role, you will enhance digital products through data-driven experimentation and analytics. Responsibilities include running large-scale A/B and multivariate tests using tools like Statsig, applying advanced statistical methods such as CUPED and Bayesian Autotune, automating traffic allocation to optimize feature performance, managing feature flagging with gradual rollouts, kill switches, and targeting, and linking feature flags directly to product metrics. Technology stack iOS: Swift UI: SwiftUI, UIKit Concurrency: GCD, Swift Concurrency Persistence: CoreData Tooling: SPM, TestFlight, Figma Testing: Unit Testing, UI Testing, A/B Testing Responsibilities Refactor and expand the ticket-selling system Develop, enhance, and maintain high-quality, scalable code Collaborate with cross-functional teams to implement new features and support experimentation initiatives Requirements 6+ years of iOS development experience using Swift Experience in experimentation and R&D Hands-on experience with Statsig or similar platforms Strong Clean Code and OOP skills Knowledge of SwiftUI and UIKit Experience with unit testing and working without dedicated QA engineers Understanding of SOLID principles Familiarity with Agile development methodology Good spoken English

🏢 Summary: Senior Backend Engineer role focused on building and maintaining high-volume, low-latency integrations between a distribution platform and Hotel PMS/CRS systems using .NET and Azure. The position centers on ARI (Availability, Rates, Inventory) flows, resilient event-driven architectures, and SQL-based data consistency in mission-critical hospitality environments. The role requires strong domain knowledge in hotel distribution and hands-on Azure DevOps and integration experience. 🗂️ Requirements: 5+ years of backend engineering experience, Experience with system-to-system integrations, Strong travel industry experience, Strong understanding of ARI (Availability, Rates, Inventory), Experience with hospitality APIs, Experience reconciling state across event-driven and polling systems, Proficiency in .NET and C#, Experience with Azure (VMs, App Services, Service Bus, App Gateway), Experience with Azure DevOps and CI/CD pipelines, Strong knowledge of REST APIs, Experience with event-driven architectures, Strong SQL database experience (design, performance), Knowledge of idempotent API design, Experience with concurrency and retry strategies, Experience with high-throughput production systems 📃 Skills: .NET, C#, Azure, AzureVM, AppGateway, AppServices, AzureFunctions, ServiceBus, AzureDevOps, CI/CD, SQL, AzureSQL, SQLServer, REST, JSON, EventDriven, OAuth2, Docker, AzureMonitor, ApplicationInsights 🏢 Description: Client Our client operates in the travel and hospitality industry and is building a high-volume distribution and integration platform connecting downstream systems with multiple Hotel Property Management Systems (PMS) and hospitality platforms. The platform supports mission-critical availability, rate, and inventory flows and is designed for scale, performance, and resiliency. Project overview The project focuses on high-throughput, low-latency distribution, handling complex hospitality concepts such as ARI (Availability, Rates, Inventory), restrictions, inventory blocks, and state reconciliation across event-driven and polling-based models. The platform is built using Microsoft technologies (.NET and Azure), with strong emphasis on Azure infrastructure, DevOps, and relational data consistency. Position overview As a Senior Backend Engineer you will design, build, and maintain core backend integrations between the client’s platform and Hotel PMS / CRS / hospitality systems. This role requires hands-on experience integrating with at least one hospitality platform and strong domain knowledge of hotel distribution, combined with solid experience operating backend systems on Azure and SQL-based architectures. Eastern European candidates are expected to maintain a 4–6 hour working overlap with the US Eastern Time zone. Technology stack .NET / C#; Azure, including: Azure Virtual Machines, Azure App Gateway, Azure App Services / Functions, Azure Service Bus, Azure DevOps (pipelines, CI/CD); SQL databases (Azure SQL, SQL Server); REST APIs (JSON); Event-driven architectures; OAuth2 authentication; Docker; Observability & logging (Azure Monitor, Application Insights or similar). Responsibilities Design, build, and maintain backend integrations with Hotel PMS and hospitality platforms. Implement idempotent ARI (Availability, Rates, Inventory) update mechanisms. Handle complex hotel distribution concepts (rate plans, restrictions, inventory blocks). Build and operate high-volume, low-latency distribution systems. Reconcile system state across event-driven and polling models. Design resilient integration patterns (idempotency, retries, deduplication). Ensure data integrity and performance in SQL databases. Contribute to Azure deployments, CI/CD pipelines, and operational readiness. Collaborate with product, QA, and partner technical teams on integration contracts. Troubleshoot and resolve production issues with external hospitality systems. Requirements Strong experience in the travel industry and with APIs Strong understanding of ARI (Availability, Rates, Inventory), rate plans, restrictions, and inventory allocation. Experience with hospitality APIs and reconciling state across event-driven and polling systems. 5+ years as Backend Engineer with system-to-system integrations. Proficient in .NET/C#, Azure (VMs, App Gateway, App Services, Service Bus), and Azure DevOps CI/CD. Strong in REST APIs, event-driven architectures, and SQL databases (schema design, performance). Knowledge of idempotent API design, concurrency, retries/backoff strategies. Experience with high-throughput production systems and good English communication skills. Nice to have Direct experience integrating with one or more of the following platforms: Oracle OPERA Cloud / OHIP Amadeus Hospitality Suite Sabre SynXis Cloudbeds Mews PMS Infor HMS Agilysys Stay Shiji Daylight PMS Experience with distributed tracing and observability Familiarity with high-availability, low-latency architectures Understanding of Agile / Scrum methodologies What We Offer: Vacation days : Up to 26 business days per year. 10 illness/special days off per year (fully paid, no medical papers needed) for all contract types Health and life insurance (Luxmed) MyBenefit platform with Multisport option Internal psychological support service English language classes from the first working day Access to external learning platforms : O’Reilly, LinkedIn Learning, Udemy, and a wide catalog of diverse internal training Flexible workplace : work from the office, from home, or choose a hybrid option Tech Skills Mentoring Program Opportunities to develop as a public speaker, mentor, or technical interviewer Fully paid idle (bench) when not involved in a project Certification reimbursement (AWS, GCP, Microsoft, etc.)

🏢 Summary: Design and develop a high-scale, low-latency cloud-native order management system for airlines, replacing legacy ticketing with a modern Offer & Order platform. The role focuses on building and optimizing mission-critical microservices, handling complex state management, and integrating with legacy systems in a cloud environment. You will work in an Agile team to deliver secure, high-performance solutions processing millions of global transactions. 🗂️ Requirements: 6-9 years of software development experience, Experience in Agile software development, Strong experience with Java, Strong experience with Spring, Experience with Web Services, Experience with Git, Experience with Maven, Experience with Jenkins, Experience with Docker, Knowledge of GCP cloud technologies, Strong analytical and problem-solving skills, English proficiency (written and verbal), Legal work permit in Poland 📃 Skills: Java, Spring, WebServices, Git, Maven, Jenkins, Docker, GCP, Agile, Microservices, Cloud 🏢 Description: Project info Our customer is building a cloud-native order management system for airlines that replaces legacy ticketing with a modern, e-commerce-driven "Offer & Order" ecosystem. As a Software Engineer on this high-scale, low-latency platform, you will leverage AI tools to gain productivity while designing, coding, and deploying mission-critical microservices capable of securely processing millions of global transactions. You will tackle complex state management and troubleshoot intricate software issues to handle the complete lifecycle of dynamic travel baskets and seamless legacy system integrations. Working closely with technical panels, you will actively design prototypes, propose architectural enhancements, and align business requirements with advanced technology. If you have the right mindset, join us on this thrilling journey to build a massive market differentiator that will fundamentally transform the global travel industry. Responsibilities Develops, codes, tests and debugs new complex software solutions or enhancements to existing product Designs, plans, develops and improves applications using routine and advanced technology Works on issues where analysis of situations or data requires an in-depth knowledge of application & system Encourage high coding standards, using best practices and high quality Represents team on cross-teams’ meetings Job requirements around 6-9 years of related experience Experience in fast paced Software Development in Agile environment Experience in: Java, Spring, Web Services Experience with tools like Git, Maven, Jenkins, Docker Good knowledge of cloud based technologies (GCP) Excellent analysis and problem-solving skills Good communication skills in English, both written and verbal Must possess a legal work permit in Poland Benefits General benefits - depends on the form of employment Hybrid work model combining office & remote work Attractively located office with collaboration spaces Onsite parking space for employees Referral program with financial bonus Life Insurance Budget for development (including language courses and others), clear career path with the possibility to gain experience in international environment Access to internal Learning Platform with multiple trainings oriented for professional growth Lifestyle benefits: Access to MyBenefit platform (Multisport included) Team Building activities Charity initiatives Working environment promoting diversity and inclusion Health benefits: Private medical care - Platinum Package

🏢 Summary: Software Engineer role focused on building and scaling a cloud-native, high-performance order management platform for the airline industry. The position involves designing, developing, and deploying mission-critical microservices in a modern Offer & Order ecosystem, ensuring high availability and low latency. You will work in an Agile environment to enhance architecture, integrate legacy systems, and deliver secure, high-quality software solutions. 🗂️ Requirements: 6-9 years of software development experience, Experience in Agile software development, Strong experience with Java, Experience with Spring framework, Experience with Web Services, Experience with Git, Experience with Maven, Experience with Jenkins, Experience with Docker, Knowledge of GCP cloud technologies, Ability to design and develop microservices, Legal work permit in Poland 📃 Skills: Java, Spring, WebServices, Git, Maven, Jenkins, Docker, GCP, Microservices, Agile, Cloud 🏢 Description: Project Info Our customer is building a cloud-native order management system for airlines that replaces legacy ticketing with a modern, e-commerce-driven "Offer & Order" ecosystem. As a Software Engineer on this high-scale, low-latency platform, you will leverage AI tools to gain productivity while designing, coding, and deploying mission-critical microservices capable of securely processing millions of global transactions. You will tackle complex state management and troubleshoot intricate software issues to handle the complete lifecycle of dynamic travel baskets and seamless legacy system integrations. Working closely with technical panels, you will actively design prototypes, propose architectural enhancements, and align business requirements with advanced technology. If you have the right mindset, join us on this thrilling journey to build a massive market differentiator that will fundamentally transform the global travel industry. Responsibilitie Develops, codes, tests and debugs new complex software solutions or enhancements to existing product Designs, plans, develops and improves applications using routine and advanced technology Works on issues where analysis of situations or data requires an in-depth knowledge of application & system Encourage high coding standards, using best practices and high quality Represents team on cross-teams’ meetings Job Requirements around 6-9 years of related experience Experience in fast paced Software Development in Agile environment Experience in: Java, Spring, Web Services Experience with tools like Git, Maven, Jenkins, Docker Good knowledge of cloud based technologies (GCP) Excellent analysis and problem-solving skills Good communication skills in English, both written and verbal Must possess a legal work permit in Poland Benefits: General benefits - depends on the form of employment Hybrid work model combining office & remote work Attractively located office with collaboration spaces Onsite parking space for employees Referral program with financial bonus Life Insurance Budget for development (including language courses and others), clear career path with the possibility to gain experience in international environment Access to internal Learning Platform with multiple trainings oriented for professional growth Lifestyle benefits: Access to MyBenefit platform (Multisport included) Team Building activities Charity initiatives Working environment promoting diversity and inclusion Health benefits: Private medical care - Platinum Package

🏢 Summary: Full Stack Developer role focused on building and evolving a modern web application platform with complex workflows and data-driven features. The position involves developing and maintaining both frontend and backend components, ensuring scalability, performance, and reliability. You will collaborate within a cross-functional team to deliver iterative improvements using modern development practices and AI-assisted tools. 🗂️ Requirements: Experience in full stack web application development, Hands-on experience with React, Experience with C# and .NET or comparable backend technologies, Practical experience with SQL-based databases and writing queries, Experience using AI-assisted development tools (e.g., Claude, Cursor), Solid understanding of Git and version control workflows, Ability to work with and extend existing codebases 📃 Skills: React, TypeScript, C#, .NET, SQL, Git, REST, Claude, Cursor 🏢 Description: Project overview The project is a web based application platform designed to support complex user workflows and data driven features. It focuses on performance, maintainability, and iterative delivery of new capabilities. Team You will be part of a cross functional development team consisting of full stack developers, frontend specialists, backend engineers, and QA engineers. The team works collaboratively, reviews code regularly, and follows shared development standards and branching practices. Position overview We are looking for a Full Stack Developer to contribute to the development and evolution of a modern web application platform. You will work on both frontend and backend components, focusing on building reliable, scalable features and improving existing functionality. The role combines hands on development with close collaboration across engineering and product roles. Technology stack React, TypeScript, C#, .NET, SQL based databases, Git, REST APIs, AI assisted development tools such as Claude and Cursor Responsibilities Develop and maintain frontend features using React and related technologies Build and support backend services using C# and .NET Collaborate with team members on feature design, implementation, and code reviews Work with SQL based databases to design, query, and optimize data storage Use AI assisted development tools to improve development efficiency and code quality Follow established Git workflows and branching strategies Participate in troubleshooting, debugging, and performance improvements Requirements Experience building web application platforms in a full stack role Hands on experience with React for frontend development Experience with C# and .NET or comparable backend technologies Understanding of SQL based databases and practical experience writing queries Experience using AI tools to support software development, including Claude or Cursor Solid understanding of Git, version control, and common branching flows Ability to work with existing codebases and contribute to ongoing development Nice to have Experience with cloud based environments Familiarity with CI CD pipelines Experience working on large scale or long term web platforms Exposure to performance optimization and application monitoring What We Offer: Vacation days : Up to 26 business days per year. 10 illness/special days off per year (fully paid, no medical papers needed) for all contract types Health and life insurance (Luxmed) MyBenefit platform with Multisport option Internal psychological support service English language classes from the first working day Access to external learning platforms : O’Reilly, LinkedIn Learning, Udemy, and a wide catalog of diverse internal training Flexible workplace : work from the office, from home, or choose a hybrid option Tech Skills Mentoring Program Opportunities to develop as a public speaker, mentor, or technical interviewer Fully paid idle (bench) when not involved in a project Certification reimbursement (AWS, GCP, Microsoft, etc.)

🏢 Summary: Frontend role focused on building scalable and maintainable React and Next.js applications as part of a global technology modernization initiative. The position involves designing frontend architecture, developing reusable UI components, and optimizing performance for core business systems powered by AWS and Python backend services. The project is in an early stage, requiring architectural input and high technical expertise. 🗂️ Requirements: Bachelor's degree in Computer Science or related field, 5+ years of frontend development experience, At least 3 years in middle or senior frontend role, Extensive experience with React.js including hooks and Context API, Strong knowledge of Next.js with SSR and SSG, Experience with Fluent UI or similar component library, Strong knowledge of frontend performance optimization, Experience designing scalable component libraries 📃 Skills: React, Next.js, JavaScript, FluentUI, AWS, Python, SSR, SSG 🏢 Description: Client Our client is one of the leading reinsurance service providers across the globe. Their technological platform is constantly evolving as they apply new and emerging technologies to their expanding business. Project overview Clients’ technological platforms are constantly evolving as they adopt new and emerging technologies to support their expanding businesses. The team manages applications at the heart of clients’ core business strategies and supports a global user base. The nature of clients’ businesses demands high levels of agility, which in turn requires the team to be technically superior. The project is part of clients’ global technology modernization roadmaps. It aims to equip key business lines with the technology needed to address modern market challenges and seize new opportunities. The development focuses on core business applications using a modern AWS toolset with Python on the backend. As the project is in its early stages, a significant portion of the work involves architectural design, technology selection, and proof-of-concept (POC) activities. Position overview We are looking for an experienced React & Next.js Developer to join our team. In this role, you will be responsible for developing scalable and maintainable frontend architectures using React.js and Next.js. You will work closely with UX designers to deliver user-friendly, high-performance UI components, ensuring a seamless experience for a global user base. This position offers the opportunity to contribute to a cutting-edge project that is part of a broader technology modernization roadmap, leveraging modern AWS tools and Python on the backend. Responsibilities Develop scalable and maintainable frontend architecture using React.js and Next.js Implement and optimize reusable UI components using Fluent UI Collaborate with UX designers to ensure consistent and user-friendly component designs Conduct code reviews and provide constructive feedback to team members Optimize components for maximum performance and reusability Stay updated with the latest frontend technologies and industry trends Requirements Bachelor's degree in Computer Science or related field 5+ years of experience in frontend development, with at least 3 years in a middle or a senior role Extensive experience with React.js, including hooks and context API Strong knowledge of Next.js and its features for server-side rendering and static site generation Proficiency in working with Fluent UI or similar component libraries Deep understanding of frontend performance optimization techniques Experience in designing and implementing scalable component libraries Excellent problem-solving skills and attention to detail Strong communication skills and ability to work in a collaborative environment Nice to have Experience with micro frontends architecture Familiarity with design systems and component-driven development Knowledge of testing frameworks Understanding of CI/CD pipelines and build tools What We Offer: Vacation days : Up to 26 business days per year. 10 illness/special days off per year (fully paid, no medical papers needed) for all contract types Health and life insurance (Luxmed) MyBenefit platform with Multisport option Internal psychological support service English language classes from the first working day Access to external learning platforms : O’Reilly, LinkedIn Learning, Udemy, and a wide catalog of diverse internal training Flexible workplace : work from the office, from home, or choose a hybrid option Tech Skills Mentoring Program Opportunities to develop as a public speaker, mentor, or technical interviewer Fully paid idle (bench) when not involved in a project Certification reimbursement (AWS, GCP, Microsoft, etc.)

🏢 Summary: Opportunity for an Automated Quality Assurance Engineer to build and enhance AI-driven test automation frameworks using TypeScript and Playwright. The role focuses on integrating intelligent agents and modern automation tools into the testing lifecycle to improve coverage, speed, and reliability. You will collaborate with cross-functional teams and contribute to CI/CD processes in a cloud-based development environment. 🗂️ Requirements: Experience with Playwright MCP, Understanding of AI Agents concepts and practical application, Hands-on experience with GitHub Copilot, Proficiency in Typescript, Experience with Selenium WebDriver, Experience with CI/CD pipelines, Experience with version control systems, Strong programming skills in at least one modern language, Ability to work collaboratively in a team environment, Strong problem-solving skills 📃 Skills: Typescript, Playwright, PlaywrightMCP, Selenium, GitHubCopilot, AIAgents, CICD, Git, Cloud 🏢 Description: Client Our client is one of the largest professional certification associations in the finance industry globally and uses DataArt as its primary technology partner. Project overview The project focuses on developing advanced automated testing solutions enhanced with AI driven capabilities to improve test coverage, speed, and reliability across modern applications. You will work on integrating intelligent agents and automation tools into the testing lifecycle. Position overview We are looking for a skilled Automated Quality Assurance Engineer with strong experience in Typescript, Playwright, and AI driven testing approaches. You will contribute to building reliable automation frameworks and improving software quality through modern testing practices and intelligent tooling. Technology stack Typescript, Playwright, Playwright MCP, Selenium WebDriver, GitHub Copilot, AI Agents concepts, CI CD pipelines, Git, cloud based development environments Responsibilities Design and maintain automated test scripts using Typescript and Playwright Collaborate with developers and product teams to define and implement test strategies Execute automated test suites and analyze results to ensure product quality Integrate Playwright MCP features into automation workflows Apply AI agent concepts to enhance automation coverage and efficiency Leverage GitHub Copilot to improve development speed and code quality Participate in code reviews and contribute to CI CD processes Monitor testing trends and apply best practices in automation and AI driven QA Requirements Experience with Playwright MCP Understanding of AI Agents concepts and their practical application Hands on experience with GitHub Copilot Proficiency in Typescript Experience with Selenium WebDriver for test automation Experience working with CI CD pipelines and version control systems Strong programming skills in at least one modern language Ability to collaborate effectively within a team environment Strong problem solving and communication skills Nice to have Experience with cloud based testing environments Familiarity with performance testing tools Exposure to DevOps practices and automation pipelines Understanding of modern software architecture patterns What We Offer: Vacation days : Up to 26 business days per year. 10 illness/special days off per year (fully paid, no medical papers needed) for all contract types Health and life insurance (Luxmed) MyBenefit platform with Multisport option Internal psychological support service English language classes from the first working day Access to external learning platforms : O’Reilly, LinkedIn Learning, Udemy, and a wide catalog of diverse internal training Flexible workplace : work from the office, from home, or choose a hybrid option Tech Skills Mentoring Program Opportunities to develop as a public speaker, mentor, or technical interviewer Fully paid idle (bench) when not involved in a project Certification reimbursement (AWS, GCP, Microsoft, etc.)

🏢 Summary: Development of scalable, cloud-native applications using C#/.NET in a microservices architecture on Microsoft Azure. The role focuses on building high-performance, containerized systems, ensuring quality through CI/CD practices, and optimizing performance in modern cloud environments. Position requires strong engineering expertise and experience in travel-related solutions. 🗂️ Requirements: 5+ years experience with C# and .NET, 3+ years experience developing travel-related solutions, Experience with modern cloud architectures, Expertise in Microsoft Azure, Experience with containerized applications, Experience with SQL and NoSQL databases, Strong knowledge of microservices architecture, Understanding of API design principles, Knowledge of clean architecture and SOLID principles, Experience with CI/CD practices 📃 Skills: C#, .NET, Azure, SQL, NoSQL, Microservices, Containers, APIs, CI/CD, SOLID 🏢 Description: Our Client is a rapidly growing European technology company developing advanced digital solutions used by thousands of customers worldwide. The organization focuses on building scalable platforms and innovative products that support operational efficiency and business growth. Their engineering teams work in modern cloud environments and emphasize quality, user experience, and continuous delivery. The company operates internationally and continuously invests in product development and technology excellence. 📍 Location: Warsaw - once per week in the office 🚀 Your responsibilities Develop clean, scalable code using C# / .NET in microservices architecture and cloud-native environments Test and deploy systems and applications on Microsoft Azure Monitor and optimize system performance , identifying and resolving issues proactively Act as a technical expert for the system and support other internal teams Work in an Agile squad , with strong focus on user experience, quality assurance, and CI/CD practices Contribute to the engineering culture by sharing knowledge and applying best practices Work on projects that directly impact the company’s growth and product development 🎯 Our requirements 5+ years of professional experience in software development using C# / .NET and modern cloud architectures 3+ years of experience developing travel-related solutions Strong understanding of core software engineering principles and API design Proven expertise in building and managing high-performance containerized applications on Microsoft Azure Experience designing and managing SQL and NoSQL databases Deep understanding of microservices architecture, clean code, clean architecture, and SOLID principles Professional English proficiency ⭐ Nice to have Working knowledge of Angular / AngularJS Familiarity with AI tools supporting development workflows Experience working in Agile / Scrum environments Thank you for all applications. We will contact selected candidates. TQLO Sp. z o.o. – Employment Agency (KRAZ 33580)