Senior Back End JS Developer

🏢 Summary: Senior Full Stack Engineer role focused on building and scaling core platform functionalities within a cross-functional product team. The position involves end-to-end ownership of features, from design to deployment, using a modern TypeScript-based stack on AWS. The engineer will develop scalable microservices and frontend components that support millions of global users. 🗂️ Requirements: 7+ years of professional software engineering experience, Strong hands-on experience with TypeScript, Node.js, and React, Proven experience with AWS services: API Gateway, Lambda, ECS, SQS, SNS, Experience designing event-driven and microservices architectures, Proficiency with NoSQL and relational databases, Experience with CI/CD pipelines and Docker, Experience with observability and monitoring tools 📃 Skills: TypeScript, Node.js, React, AWS, APIGateway, Lambda, ECS, SQS, SNS, MongoDB, DynamoDB, PostgreSQL, Jenkins, GitLabCI, GitHubActions, Docker, CloudWatch, Datadog, REST, Microservices, NoSQL, CICD 🏢 Description: Salary range: B2B - up to 43 E/h + VAT 💰 Ciklum is looking for a Senior Full Stack Engineer to join our team and work directly with our partner, Trustpilot, in Poland. We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live. About the client: Trustpilot is on an incredible journey to become the universal symbol of trust. As the world’s largest independent consumer review platform, they bring consumers and businesses together to foster transparency and improvement. With over 300 million reviews and 64 million monthly active users, the work we do together has a massive global impact, helping millions of people make better choices every day. About the role: As a Senior Full Stack Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. As the world’s largest independent consumer review platform, they bring consumers and businesses together to foster transparency and improvement. With over 300 million reviews and 64 million monthly active users, the work we do together has a massive global impact, helping millions of people make better choices every day. In this role - you are fully integrated into feature teams. You will work on core platform functionalities that drive product-led growth, managing the critical customer lifecycle including sign-up, onboarding, sales, and retention. Your work will influence the experience of over 60 million monthly Trustpilot users globally! You will join a cross-functional "full ownership" team where you have a say in the direction of projects and technological choices. Responsibilities: Collaborative Development: Work alongside Product, Design, and Data Science in a team that owns its product and codebase from end-to-end End-to-End Ownership: Participate in every stage of the lifecycle—from ideation and design to architecture, implementation, deployment, and maintenance System Design: Drive technical decision-making and build scalable backend services and clean, reusable frontend components using TypeScript Scale & Innovation: Build and maintain RESTful APIs and distributed cloud services within an event-driven microservices architecture Team Leadership: Support and inspire your colleagues with your technical expertise and a problem-solving mindset Requirements: Experience: 7+ years of professional experience in software engineering Core Tech: Strong, hands-on expertise with TypeScript, Node.js, and React AWS Infrastructure: Proven experience with API Gateway, Lambda, ECS, SQS, SNS Architecture: Deep understanding of event-driven and microservice architectures Databases: Proficiency with NoSQL (MongoDB, DynamoDB) and Relational databases (PostgreSQL) DevOps & Tooling: Experience with CI/CD (Jenkins, GitLab CI, GitHub Actions), Docker, and observability tools like CloudWatch or Datadog What`s in it for you? Remote Collaboration: Enjoy the flexibility of remote work or join us in our offices across Europe Human Connection: We value a great atmosphere and host team F2F workshops a few times a year to brainstorm and bond in person Continuous Growth: Benefit from a tailored education path, including internal meetups, a Udemy license, and company-paid certifications Comprehensive Care: We offer medical insurance, mental health programs, and a welcoming, open culture Global Reach: Your work will build solutions used by millions to promote trust and transparency online Be bold, not bored! If you're ready to build the heart of trust with a world-class engineering team, we’d love to see your application.

🏢 Summary: B2B Full Stack Engineer role focused on building and scaling core platform functionalities within a product-led growth environment. The position involves end-to-end ownership of features, developing scalable backend services and reusable frontend components in a cloud-based microservices architecture. You will work on high-impact systems supporting millions of global users. 🗂️ Requirements: 4+ years of professional software development experience, Strong hands-on experience with TypeScript, Strong hands-on experience with Node.js, Strong hands-on experience with React, Experience with AWS services (S3, ECS, Lambda), Experience with event-driven architecture, Experience with microservices architecture, Proficiency with MongoDB and DynamoDB, Proficiency with PostgreSQL, Experience with Docker, Experience with CI/CD pipelines, Familiarity with observability tools (CloudWatch or Datadog) 📃 Skills: TypeScript, Node.js, React, AWS, S3, ECS, Lambda, MongoDB, DynamoDB, PostgreSQL, Docker, CI/CD, CloudWatch, Datadog, REST, Microservices 🏢 Description: Salary range: B2B - 30.5 E/h + VAT 💰 Ciklum is looking for a Full Stack Engineer to join our team and work directly with our partner, Trustpilot, in the Poland. We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live. About the client: Trustpilot is on an incredible journey to become the universal symbol of trust. As the world's largest independent consumer review platform, they bring consumers and businesses together to foster transparency and improvement. With over 300 million reviews and 64 million monthly active users, the work we do together has a massive global impact, helping millions of people make better choices every day. About the role: As a Full Stack Engineer, you will be part of a cross-functional team with full ownership of the product and codebase. In this role, you are fully integrated into Trustpilot's feature teams. You will work on core platform functionalities that drive product-led growth, managing the critical customer lifecycle including sign-up, onboarding, sales, and retention. Your work will influence the experience of over 60 million monthly Trustpilot users globally! You will join a cross-functional full ownership team where you have a say in the direction of projects and technological choices. Responsibilities: Collaborative Development: Work alongside Product, Design, and Data Science in a team that owns its product and codebase from end-to-end End-to-End Ownership: Participate in every stage of the lifecycle: from ideation and design to architecture, implementation, deployment, and maintenance System Design: Participate in technical decision-making and build scalable backend services and clean, reusable frontend components using TypeScript Scale & Innovation: Build and maintain RESTful APIs and distributed cloud services within an event-driven microservices architecture Team Excellence: Contribute to planning, troubleshooting, and code reviews while inspiring the team with your problem-solving mindset Requirements: We are looking for engineers who are passionate about high-quality code and technical excellence: Experience: 4+ years of professional experience in software development Core Tech: Strong, hands-on expertise with TypeScript, Node.js, and React AWS Infrastructure: Experience with S3, ECS, Lambda Architecture: Familiarity with event-driven and microservice architectures Databases: Proficiency with NoSQL (MongoDB, DynamoDB) and Relational databases (PostgreSQL) DevOps & Tooling: Familiarity with Docker, CI/CD pipelines, and observability tools like CloudWatch or Datadog Desirable: Hands-on experience with AWS services: SQS, SNS, API Gateway, CloudWatch Understanding of Infrastructure as Code (e.g., CloudFormation) Experience with GCP services like BigQuery Exposure to other languages (Python, .NET, or PHP) and frontend styling (SASS, Styled Components) Experience with end-to-end testing using Playwright What`s in it for you? Remote Collaboration: Enjoy the flexibility of remote work or join us in our office locations across Europe Human Connection: We value a great atmosphere and host team F2F workshops a few times a year to brainstorm and bond in person Continuous Growth: Benefit from a tailored education path, including internal meetups, a Udemy license, and company-paid certifications Comprehensive Care: We offer medical insurance, mental health programs, and a welcoming, open culture Global Reach: Your work will build solutions used by millions to promote trust and transparency online Be bold, not bored! If you're ready to build the heart of trust with a world-class engineering team, we'd love to see your application.

🏢 Summary: Full-time Senior JavaScript Engineer role focused on building and evolving a scalable Design System for a global consumer platform. The position involves owning complex frontend features, creating reusable UI components, and ensuring accessibility and high-quality architecture. You will work cross-functionally with UX and product teams to deliver robust, documented, and versioned frontend solutions. 🗂️ Requirements: 5+ years frontend web development experience, Advanced proficiency in React, Advanced proficiency in TypeScript, Advanced proficiency in CSS, Experience building scalable libraries or modular UI components, Experience with Design Systems, Knowledge of WCAG 2.1/2.2 accessibility standards, Experience with versioned code libraries and release management, Upper-intermediate English proficiency 📃 Skills: JavaScript, React, TypeScript, CSS, Next.js, SASS, Playwright, Node.js, MongoDB, AWS, CI/CD, WCAG, Figma 🏢 Description: Salary range: B2B - 40-43 E/h + VAT 💰 Ciklum is looking for a Senior JavaScript Engineer to join our team full-time in Poland. We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live. About the role: As a Senior JavaScript Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. You will join a high-impact Design Systems team alongside other Senior Engineers to own high-impact workstreams and cross-functional partnerships. Our goal is to provide a seamless experience for millions of users on a global consumer review platform through robust, documented, and accessible UI patterns. You will operate with high autonomy, turning initial product needs into reusable components that enable product teams to move faster and more consistently. Responsibilities: Feature Ownership: Take end-to-end ownership of complex system features such as Data Visualization suites, theme engines, or complex search/filtering patterns System Architecture: Build for flexibility and reusability, ensuring features solve problems for multiple product teams without creating maintenance bottlenecks UX Collaboration: Work in close partnership with UX designers to bridge the gap between Figma and code, ensuring technical feasibility during design reviews Product Integration: Act as the dedicated technical point of contact for product areas to identify patterns that should be integrated into the core library Accessibility Standards: Own the accessibility (A11y) for your features, ensuring components meet WCAG 2.1/2.2 standards Release Management: Manage the lifecycle of features within a versioned code library, ensuring safe releases and clear migration paths Technical Documentation: Produce clear, comprehensive documentation so that stakeholders, engineers, and AI agents can understand and extend your work Mentorship: Participate in code reviews and RFCs, providing constructive feedback to help other engineers grow while maintaining a high quality bar Requirements: Core Expertise: Advanced, hands-on proficiency with React, TypeScript, and CSS Frontend Experience: 5+ years of professional experience in frontend web development Systems Thinking: Proven experience building scalable libraries, shared infrastructure, or modular UI components Inclusivity: Strong understanding of building accessible interfaces and applying WCAG standards Strategic Execution: Ability to take vague requests, break them down into manageable tracks, and deliver at a steady, predictable pace Communication: Upper-intermediate or higher level of spoken and written English Desirable: Design Systems: Proven experience contributing to a professional Design System or a major open-source project Modern Tooling: Experience with Next.js, CSS Modules, SASS, or Styled Components Testing: Familiarity with end-to-end testing frameworks like Playwright Infrastructure: Understanding of AWS cloud infrastructure or CI/CD practices Backend: Exposure to Node.js, MongoDB Personal skills: Accountability: You take ownership and follow through on your responsibilities Drive: You're proactive and results-oriented, always seeking better ways to solve problems Self-development: You stay curious, seek feedback, and aim for continuous improvement Effective communication: You communicate your ideas clearly and collaborate effectively in a team Mentoring: You're open to helping less experienced team members and sharing knowledge What`s in it for you? Strong community: Work alongside top professionals in a friendly, open-door environment Growth focus: Take on large-scale projects with a global impact and expand your expertise Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies Flexibility: Enjoy flexibility – full remote working possibilities Care: We’ve got you covered with company-paid medical insurance, mental health support, and financial & legal consultations About us: At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress. With delivery centers in Wrocław and Gdańsk, our 300+ professionals in Poland drive forward-thinking solutions for global clients. Join a community where collaboration sparks innovation—and your impact reaches millions. Want to learn more about us? Follow us on Instagram , Facebook , LinkedIn . Explore, empower, engineer with Ciklum! Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.

🏢 Summary: Full-time Software Engineer role focused on building secure, scalable backend systems and APIs on AWS using TypeScript. The position involves end-to-end ownership of automated systems that detect misuse and enforce platform policies, working across the full development lifecycle. Ideal for engineers passionate about backend stability, cloud architecture, and high-quality code. 🗂️ Requirements: 3+ years of professional backend development experience, Strong proficiency in JavaScript, TypeScript, and Node.js, Experience building and consuming RESTful or GraphQL APIs, Experience with core AWS services (Lambda, SQS, SNS, API Gateway, S3), Experience with Docker containerization, Experience with NoSQL or relational databases, Understanding of web security principles and best practices, Upper-intermediate or higher English level 📃 Skills: JavaScript, TypeScript, Node.js, AWS, Lambda, SQS, SNS, APIGateway, S3, REST, GraphQL, Docker, MongoDB, DynamoDB, PostgreSQL, Security, CI/CD, Jenkins, GitLab, GitHubActions, React, CloudWatch, Datadog, .NET, Python, GCP, BigQuery 🏢 Description: Salary range: B2B - 30 E/h + VAT 💰 Ciklum is looking for a Software Engineer to join our team full-time in Poland. We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live. About the role: As a Software Engineer, you will be part of a cross-functional team with full ownership of the product and codebase. You will join a team specifically focused on businesses, building automated systems that detect misuse and enforce platform policies. You will participate in all stages of the development lifecycle: from ideation and design to implementation, deployment, and maintenance. This role is ideal for an engineer with a strong passion for backend stability and scalability who enjoys building robust cloud architectures. Responsibilities: Develop and maintain secure, scalable APIs and services on AWS using TypeScript Write clean, efficient, and testable code for both backend and frontend applications Collaborate closely with senior engineers, product managers, and designers to translate requirements into technical solutions Implement security best practices in your code to protect user data and ensure platform integrity Contribute to the entire development lifecycle, from planning and implementation to deployment and maintenance Troubleshoot, debug, and upgrade existing software to enhance functionality and performance Participate actively in code reviews, providing and receiving constructive feedback to maintain a high-quality codebase Requirements: 3+ years of professional experience in backend development Strong proficiency with JavaScript, TypeScript and Node.js Experience building and consuming RESTful or GraphQL APIs Experience with core AWS services (e.g., Lambda, SQS, SNS, API Gateway, S3) Familiarity with containerization using Docker Experience with NoSQL (e.g., MongoDB, DynamoDB) and/or relational (e.g., PostgreSQL) databases A good understanding of web security principles and best practices Strong problem-solving skills and a passion for writing quality code Upper-intermediate or higher level of spoken and written English Desirable: Hands-on expertise with React Familiarity with CI/CD practices and tools (e.g., Jenkins, GitLab CI, GitHub Actions) Experience with monitoring and logging tools (e.g., CloudWatch, Datadog) Working experience with .Net or Python is a plus Experience with GCP and services like BigQuery Personal skills: Accountability: You take ownership and follow through on your responsibilities Drive: You're proactive and results-oriented, always seeking better ways to solve problems Self-development: You stay curious, seek feedback, and aim for continuous improvement Effective communication: You communicate your ideas clearly and collaborate effectively in a team Mentoring: You're open to helping less experienced team members and sharing knowledge What`s in it for you? Strong community: Work alongside top professionals in a friendly, open-door environment Growth focus: Take on large-scale projects with a global impact and expand your expertise Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies Flexibility: Enjoy flexibility – full remote working possibilities Care: We’ve got you covered with company-paid medical insurance, mental health support, and financial & legal consultations About us: At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress. With delivery centers in Wrocław and Gdańsk, our 300+ professionals in Poland drive forward-thinking solutions for global clients. Join a community where collaboration sparks innovation—and your impact reaches millions. Want to learn more about us? Follow us on Instagram , Facebook , LinkedIn . Explore, empower, engineer with Ciklum! Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.

🏢 Summary: Full-time Senior DevOps Engineer role focused on maintaining and improving cloud infrastructure for a healthcare mental health platform. The position involves managing Kubernetes environments on GCP, automating infrastructure with Terraform, and supporting CI/CD and production reliability in a distributed team. The offer includes B2B contract up to 35 EUR/h + VAT with full remote work in Poland. 🗂️ Requirements: Strong experience with Kubernetes, Strong experience with Google Cloud Platform (GCP), Strong experience with Terraform, Experience with Python, Familiarity with Atlantis, Ability to support CI/CD processes, Experience troubleshooting production environments, Good English communication skills, Availability for daily overlap with Pacific Time 📃 Skills: Kubernetes, GCP, Terraform, Python, Atlantis, CI/CD, Helm 🏢 Description: Salary range: B2B - up to 35 E/h + VAT 💰 Ciklum is looking for a Senior DevOps Engineer to join our team full-time in Poland. We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live. About the role: As a Senior DevOps Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. The client is a healthcare platform focused on mental health services. It enables clients to schedule appointments with psychologists and psychotherapists while integrating with various US insurance providers and mental health networks. The platform offers subscription packages for mental health and ensures accessibility through multiple insurance options. Responsibilities: Maintain and improve cloud infrastructure on GCP Manage and support Kubernetes-based environments Develop infrastructure automation using Terraform Collaborate closely with a Senior Infrastructure Engineer on platform reliability and scalability Support CI/CD processes and infrastructure operations Troubleshoot production issues and ensure system stability Contribute to infrastructure best practices and technical improvements Work closely with distributed teams in an international environment Requirements: Strong experience with Kubernetes Strong experience with Google Cloud Platform / GCP Strong experience with Terraform Experience with Python, since the team supports a lot of Python work Familiarity with Atlantis as part of the core infrastructure components Helm as a nice-to-have Strong communication skills, both verbal and written, to collaborate effectively with team members and stakeholders Good command of English, both spoken and written Availability for 2 hours of overlap per day with Pacific Time, either in the Pacific morning or Pacific late afternoon / end of day, mainly for handoffs What`s in it for you? Strong community: Work alongside top professionals in a friendly, open-door environment Growth focus: Take on large-scale projects with a global impact and expand your expertise Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies Flexibility: Enjoy flexibility – full remote working possibilities Care: We’ve got you covered with company-paid medical insurance About us: At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress. With delivery centers in Wrocław and Gdańsk, our 300+ professionals in Poland drive forward-thinking solutions for global clients. Join a community where collaboration sparks innovation—and your impact reaches millions. Explore, empower, engineer with Ciklum! Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.

🏢 Summary: Full-time Senior .NET Engineer role focused on modernizing a legacy application through incremental migration and performance-aligned redesign. The position involves analyzing complex stored procedures, building clean data access layers, and implementing comprehensive testing strategies within a cross-functional team. The project emphasizes data synchronization, hybrid data solutions, and automation tooling. 🗂️ Requirements: Strong experience with C# and .NET for building data access layers and ORM implementations, Ability to analyze and refactor complex SQL Server stored procedures, Experience with MongoDB and NoSQL patterns, Proven experience with TDD and writing unit/integration tests, Experience with Python for scripting and migration tooling, Experience using LLM/AI tools for code analysis and documentation, Understanding of event-driven architectures with Kafka, Familiarity with enterprise architectural patterns 📃 Skills: C#, .NET, SQL, T-SQL, SQLServer, MongoDB, TDD, UnitTesting, Python, LLM, AI, Kafka, SpringBoot, ORM 🏢 Description: Salary range: B2B - 39-40 E/h + VAT 💰 Ciklum is looking for a Senior .NET Engineer to join our team full-time in Poland. We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live. About the role: As a Senior .NET Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. Project Description: Modernizing Legacy application. Responsibilities: Analyze existing stored procedures and document business logic Design clean, testable .NET data access interfaces Write unit/integration tests prior to implementation Execute incremental migration with parallel validation Ensure performance parity with legacy procedures Requirements: C#/.NET - Strong experience building data access layers, repositories, and ORM implementations SQL Server/T-SQL - Ability to analyze and deconstruct complex stored procedures MongoDB - Experience with NoSQL patterns for potential hybrid data solutions TDD/Unit Testing - Proven track record writing comprehensive test suites before implementation Python - For scripting, automation, and migration tooling LLM/AI Tools - Experience leveraging AI for code analysis, conversion assistance, and documentation generation Kafka - Understanding of event-driven architectures for data synchronization Spring Boot - Familiarity with enterprise patterns (transferable to .NET architecture) What`s in it for you? Strong community: Work alongside top professionals in a friendly, open-door environment Growth focus: Take on large-scale projects with a global impact and expand your expertise Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies Flexibility: Enjoy flexibility – full remote working possibilities Care: We’ve got you covered with company-paid medical insurance, mental health support, and financial & legal consultations About us: At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress. With delivery centers in Wrocław and Gdańsk, our 300+ professionals in Poland drive forward-thinking solutions for global clients. Join a community where collaboration sparks innovation—and your impact reaches millions. Want to learn more about us? Follow us on Instagram , Facebook , LinkedIn . Explore, empower, engineer with Ciklum! Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.

🏢 Summary: Full-time Senior Automation QA Engineer role focused on designing and scaling automated testing frameworks and infrastructure, ensuring high product quality and reliable CI/CD integration within a cross-functional team. The position involves architecting automation solutions from scratch, developing UI and API tests, and maintaining testing infrastructure. B2B contract with a salary range of 35–38 EUR/h + VAT. 🗂️ Requirements: Strong experience with C#, Proven experience in Automation QA, Experience with .NET Core, Experience with unit testing, Experience with integration testing, Experience with Git, Ability to design and build test automation frameworks from scratch, Experience integrating automated tests into CI/CD pipelines 📃 Skills: C#, .NET, NETCore, Automation, UI, API, CI/CD, Git, UnitTesting, IntegrationTesting 🏢 Description: Salary range: B2B - 35-38 E/h + VAT 💰 Ciklum is looking for a Senior Automation QA Engineer to join our team full-time in Poland. We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live. About the role: As a Senior Automation QA Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. Together, we will work on the project focused on building and scaling automated testing frameworks and infrastructure to ensure high product quality and reliable CI/CD integration. Responsibilities: Architect test automation frameworks from scratch Develop automated functional UI tests and API or service-level tests Integrate automated scripts into the CI/CD process Develop, maintain and expand automated testing infrastructure Devise and document test frameworks, coding standards, preferred design patterns, and development methodologies Ensure code quality through peer reviews and adherence to guidelines and standards Define quality metrics and implement measurements to determine test effectiveness and overall product quality within the automation process Prepare conclusions and reports regarding the quality of the product under test Collaborate with QA team members to automate manual test processes Manage, analyze and mitigate testing risks Onboard new team members to the project Provide technical guidance and advice for testing teams Requirements: Strong experience with C# Proven Automation QA experience Experience with .NET Core Experience with unit and integration testing Experience with Git What`s in it for you? Strong community: Work alongside top professionals in a friendly, open-door environment Growth focus: Take on large-scale projects with a global impact and expand your expertise Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies Flexibility: Enjoy flexibility – full remote working possibilities Care: We’ve got you covered with company-paid medical insurance, mental health support, and financial & legal consultations About us: At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress. With delivery centers in Wrocław and Gdańsk, our 300+ professionals in Poland drive forward-thinking solutions for global clients. Join a community where collaboration sparks innovation—and your impact reaches millions. Want to learn more about us? Follow us on Instagram , Facebook , LinkedIn . Explore, empower, engineer with Ciklum! Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.