Ruby on Rails Senior Developer

🏢 Summary: Opportunity for a developer with Ruby on Rails and database experience to build high-quality software systems and solve complex technical issues. The role offers flexible hours, remote-work options, competitive compensation, and a structured career-development path. 🗂️ Requirements: 1+ years of IT experience, Ruby on Rails development experience, SQL or NoSQL database experience, English sufficient for written communication 📃 Skills: Ruby, Rails, SQL, NoSQL 🏢 Description: We are looking for experienced developers willing to solve complex technical issues while developing high-quality software systems using modern technologies. Requirements • 1+ years of experience in IT • Experience in Ruby on Rails development • Experience with databases (SQL or NoSQL) • English language level sufficient for written communication Nice to have • Experience in frontend development (HTML5, JavaScript, TypeScript, Angular, React, or other) • Experience with automated testing • Knowledge of containerization principles and hands-on experience with Docker We offer • Projects for clients such as PayPal, Wargaming, Xerox, Philips, Adidas, and Toyota • Competitive compensation based on qualifications and skills • Career development system with clear skill qualifications • Flexible working hours aligned to your schedule • Remote-work options

🏢 Summary: Opportunity for an experienced backend software professional to design and build complex server-side systems from scratch, define project-wide technical solutions, and establish development best practices. The role focuses on Java/Kotlin, Spring, databases, microservices, and software architecture, with flexible hours and remote-work options. 🗂️ Requirements: 3+ years of IT experience, Hands-on Java 8+ or Kotlin experience, Hands-on Spring Boot/Framework experience, Knowledge of RDBMS, ORM, and NoSQL databases, Knowledge of client-server architecture and microservices, Practical OOP and design-pattern skills, English sufficient for technical project discussions 📃 Skills: Java, Kotlin, Spring, RDBMS, ORM, Hibernate, JOOQ, MyBatis, NoSQL, Microservices, OOP 🏢 Description: We are looking for experienced professionals who can design and develop complex software systems from scratch, design project-wide technical solutions, and establish and control best development practices. What we expect from you: - 3+ years of experience in IT - Hands-on experience with modern Java technologies for server solutions: Kotlin, Java 8+, Spring Boot/Framework - Knowledge of RDBMS and ORM: Hibernate, JOOQ, MyBatis; NoSQL databases - Architectural knowledge of client-server system principles and microservices; practical skills with design patterns and OOP - English sufficient for participating in technical project discussions It would be a plus to have: - Experience with frontend development: HTML5, JavaScript/TypeScript, Angular, React, or other technologies - Hands-on experience with cloud services: Microsoft Azure, AWS, Google Cloud - Experience setting up and supporting development processes: CI/CD, code review, static code analysis, automated testing - Experience working with Scrum - Experience creating technical documentation We offer: - Projects for clients including PayPal, Wargaming, Xerox, Philips, Adidas, and Toyota - Competitive compensation based on qualifications and skills - Career development system with clear skill qualifications - Flexible working hours aligned to your schedule - Remote-work options

🏢 Summary: Senior software engineering role focused on designing and developing complex systems from scratch, defining technical solutions, and maintaining development best practices. The position involves full-stack development with .NET technologies, frontend frameworks, databases, and cloud-related processes. Flexible remote work and career growth opportunities are included. 🗂️ Requirements: 5+ years of IT experience, Experience with Microsoft .NET, Knowledge of ASP.NET MVC, Knowledge of Web API, Experience with SQL or NoSQL databases, Experience with ORM frameworks, Frontend development experience, Knowledge of HTML5, Knowledge of JavaScript or TypeScript, Experience with React, Knowledge of software design patterns and practices, English communication skills for technical discussions 📃 Skills: .NET, ASP.NET, MVC, WebAPI, SQL, NoSQL, ORM, HTML5, JavaScript, TypeScript, React, Azure, AWS, GoogleCloud, CI/CD, SCRUM, PowerBI, Databricks 🏢 Description: We are looking for experienced professionals who can design and develop complex software systems from scratch, design project-wide technical solutions, establish and control the best development practices. Requirements: 5+ years of experience in IT Experience with Microsoft .NET, knowledge of ASP.NET MVC and Web API Experience with databases (SQL or NoSQL), ORM frameworks Experience in Frontend development (HTML 5, JavaScript / TypeScript / React) Good knowledge and hands-on skills in patterns and practices English skills should be sufficient for taking part in conversations on the technical aspects of projects Nice to have: Experience in Agentic Tools and skills, AI-assisted coding models & tools, Spec-Driven Development Hands-on experience with cloud services (MS Azure, AWS, Google Cloud) Experience in setting up and supporting development processes (CI/CD, code review, static code analysis, automated testing) Experience working with SCRUM Experience in creating technical documentation Experience with Power BI and Databricks to support data-driven features and analytics integration We offer: Projects for such clients as PayPal, Wargaming, Xerox, Philips, Adidas and Toyota Competitive compensation that depends on your qualification and skills Career development system with clear skill qualifications Flexible working hours aligned to your schedule Options to work remotely

🏢 Summary: Software developer role focused on building high-quality systems and solving complex technical issues using PHP and Laravel. The position involves RESTful API development, database design, and collaboration in Agile teams, with flexible remote work options and career growth opportunities. 🗂️ Requirements: 3+ years of software development experience, Strong knowledge of PHP 7–8, Experience with Laravel, Understanding of MySQL and database design, Experience with RESTful APIs, Familiarity with Git, Familiarity with Jira, Knowledge of Agile methodologies, English communication skills for technical discussions 📃 Skills: PHP, Laravel, MySQL, REST, Git, Jira, Agile, Scrum, JavaScript, Node.js, React, Redux, Docker, AWS, Symfony, Yii 🏢 Description: We are looking for experienced developers that are willing to solve complex technical issues while developing high quality software systems using modern technologies. What we expect from you: 3+ years of experience in software development Strong knowledge of PHP (7–8) and experience with Laravel framework Solid understanding of MySQL and database design principles Experience with RESTful API development and integration Familiarity with Git, Jira, and Agile methodologies (Scrum) English skills should be sufficient for taking part in conversations on the technical aspects of projects Would be a plus: Experience with JavaScript, Node.js, or frontend frameworks (React, Redux) Hands-on experience with Docker and AWS Understanding of automated testing practices Knowledge of additional PHP frameworks (Symfony, Yii, etc.) We offer: Projects for such clients as PayPal, Wargaming, Xerox, Philips, Adidas and Toyota Competitive compensation that depends on your qualification and skills Career development system with clear skill qualifications Flexible working hours aligned to your schedule Options to work remotely

🏢 Summary: Opportunity for an experienced software developer to build high-quality frontend and backend systems, solve complex technical challenges, and work with modern technologies. The role requires production experience with JavaScript, PHP, RESTful APIs, client-server architecture, and SQL databases, with flexible remote-work options and a structured career-development path. 🗂️ Requirements: 4+ years of professional software development experience, Production frontend development experience with JavaScript, Production backend service development experience with PHP, Experience designing and consuming RESTful APIs, Understanding of client-server architecture, Strong SQL database knowledge, including indexes and locking mechanisms, Fluent English 📃 Skills: JavaScript, PHP, REST, SQL, iOS, Android, CI/CD, SCRUM, AWS, GoogleCloud 🏢 Description: We are looking for an experienced developer ready to tackle complex technical challenges while building high-quality software systems using modern technologies. Requirements • 4+ years of professional software development experience • Production skills in frontend development (JavaScript) • Experience building backend services in production (PHP) • Experience designing and consuming RESTful APIs • Understanding of client-server architecture • Solid understanding of SQL databases, including indexes and locking mechanisms • Proactive, self-motivated, and eager to take ownership of tasks • Fluent English Nice to have • Experience working within an existing PHP codebase • Mobile development experience (iOS and/or Android) • Experience setting up and supporting development processes, including CI/CD, code review, static code analysis, and automated testing • Experience working with SCRUM • Experience creating technical documentation • Hands-on experience with cloud services (AWS, Google Cloud) We offer • Projects for clients including PayPal, Wargaming, Xerox, Philips, Adidas, and Toyota • Competitive compensation based on qualifications and skills • Career development system with clear skill qualifications • Flexible working hours aligned to your schedule • Options to work remotely

🏢 Summary: Full-stack Ruby and Next.js role focused on solving complex technical problems and building robust, high-quality software systems. The offer includes flexible hours, remote-work options, competitive compensation, and a structured career-development path. 🗂️ Requirements: 3+ years of Full Stack or back-end development experience, Ruby on Rails experience, JavaScript proficiency, Next.js experience, RESTful API design and implementation knowledge, MySQL, RDBMS, and NoSQL knowledge, Git familiarity, English verbal communication skills, Ability to work independently and take ownership 📃 Skills: Ruby, Rails, JavaScript, Next.js, REST, MySQL, RDBMS, NoSQL, Git 🏢 Description: Description We are looking for a skilled Full-stack developer (Ruby + Next.js) ready to solve difficult technical problems while creating robust, high-quality software systems using modern tools and approaches. Requirements - 3+ years of experience as a Full Stack Developer or back-end developer - Good experience in Ruby on Rails development - Strong skills in JavaScript - Hands-on experience with Next.js - Good understanding of RESTful API design and implementation - Knowledge of MySQL or other RDBMS and NoSQL solutions - Familiarity with Git - English skills sufficient for verbal communication - Ability to work independently and take ownership of tasks Nice to have - Experience writing automated tests (unit, functional) - Familiarity with containerisation principles and Docker We offer - Projects for clients including PayPal, Wargaming, Xerox, Philips, Adidas, and Toyota - Competitive compensation based on qualifications and skills - Career development system with clear skill qualifications - Flexible working hours aligned to your schedule - Remote-work options

🏢 Summary: Opportunity for an experienced React Native Developer to design and develop complex cross-platform mobile applications from scratch, contribute to technical architecture, and drive development best practices. The role involves building high-performance iOS and Android applications, integrating APIs and native libraries, and collaborating in Agile teams. Flexible remote work and career development opportunities are included. 🗂️ Requirements: 4+ years of IT experience, 2+ years of React Native development experience, Expertise in React Native, Expertise in React, Understanding of front-end and back-end development, Experience with RESTful APIs, Experience with GraphQL, Knowledge of HTML, Knowledge of CSS, Experience with Jest, Understanding of React Native architecture, Experience with Xcode, Experience with Android Studio, Knowledge of Agile methodologies, English proficiency 📃 Skills: React, ReactNative, JavaScript, HTML, CSS, GraphQL, REST, Jest, Xcode, AndroidStudio, Swift, Kotlin, Java, CI/CD, Agile, Scrum, Waterfall 🏢 Description: We are looking for experienced professional who can design and develop complex software systems from scratch, design project-wide technical solutions, as well as establish and control the best development practices. Requirements: +3 years of experience in IT and minimum of 2 years of proven experience as a RN Developer Expertise in React Native, React is essential Comprehensive understanding of both front-end and back-end development processes Strong collaboration skills, enabling effective teamwork and communication within cross-functional teams Ability to adapt quickly to emerging technologies and evolving project requirements In-depth understanding of React Native architecture, component lifecycle, state management, and hooks, familiarity with nativebuild tools (Xcode, Android Studio) and native app design; principles, including offline storage, and performance tuning Experience with RESTful APIs, GraphQL, and third-party integrations Sound knowledge of HTML, CSS, and associated technologies for front-end development Experience in code testing and debugging, leveraging tools such as Jest Firm grasp of software development principles and methodologies, encompassing Agile, Scrum, and Waterfall Outstanding communication skills and adeptness in collaborative teamwork Strong organizational acumen and meticulousness to deliver top-notch work Excellent command of spoken and written English Nice to have: Familiarity with GraphQL and its fusion with frontend applications Experience in creating native modules using Swift/Kotlin/Java Knowledge of CI/CD pipelines Responsibilities: Develop and enhance cross-platform mobile applications using React Native, ensuring high performance and quality on both iOS and Android Collaborate with design and product teams to create seamless, intuitive, and visually appealing user interfaces Optimize applications for maximum performance and scalability Integrate third-party APIs and native libraries as needed Conduct code reviews, write unit tests, and debug applications to ensure code quality and functionality Maintain up-to-date knowledge of React Native advancements and apply best practices in coding, architecture, and development methodologies Provide technical expertise to guide product development and offer solutions for complex issues Participate in Agile ceremonies, including daily stand-ups, sprint planning, and retrospectives We offer: Projects for such clients as PayPal, Wargaming, Xerox, Philips, Adidas and Toyota Competitive compensation that depends on your qualification and skills Career development system with clear skill qualifications Flexible working hours aligned to your schedule Options to work remotely

🏢 Summary: Senior Front-End Developer role focused on designing, developing, and maintaining Angular-based applications that consume REST APIs and handle data-intensive integrations. The position involves building reusable, maintainable code and working with distributed data technologies such as Hadoop and MapReduce. The role requires strong debugging skills and collaboration within a cross-functional development team. 🗂️ Requirements: Minimum 5 years of professional experience in front-end development, Strong hands-on experience with Angular, Very good knowledge of TypeScript, Very good knowledge of JavaScript, Experience consuming and processing data from APIs, Ability to write reusable and maintainable code, Strong debugging and problem-solving skills, Expertise in Hadoop, Expertise in MapReduce 📃 Skills: Angular, TypeScript, JavaScript, REST, APIs, Hadoop, MapReduce, Debugging 🏢 Description: Requirements: Minimum 5 years of professional experience in front-end development Strong hands-on experience with Angular Framework Very good knowledge of TypeScript and JavaScript Experience in consuming, processing, and rendering data from APIs Ability to reuse and improve existing code Strong debugging and problem-solving skills Excellent communication skills, with the ability to build trust with both technical teams and business stakeholders Team-oriented mindset and ability to collaborate effectively across teams Expertise in Hadoop and MapReduce Nice to have: Experience working in enterprise software development environments Understanding of application performance optimization Experience working with distributed or data-intensive systems Responsibilities: Design, develop, and maintain front-end applications consuming REST APIs Write clean, reusable, and maintainable code in line with application requirements Work as part of a software development team to ensure that delivered solutions meet quality standards Debug applications and resolve technical issues Reuse and adapt existing code where appropriate to improve efficiency and consistency Suggest enhancements to application procedures, infrastructure, and overall solution design Collaborate effectively with cross-functional teams and contribute to shared project goals Explain complex technical topics in a clear and simple way to non-technical audiences Support a positive and collaborative team environment

🏢 Summary: Senior Ruby on Rails Developer role focused on building and evolving a cloud-ready product into a scalable, distributed system. The position involves designing architecture, developing core services and APIs, and driving Kubernetes-based deployments with CI/CD automation. You will influence engineering standards and contribute production-ready code in a greenfield development environment. 🗂️ Requirements: 5+ years of software engineering experience, Senior-level Ruby on Rails expertise, Experience building and scaling distributed systems, Knowledge of Kubernetes, Experience with CI/CD pipelines, Experience with Infrastructure as Code, Strong API design skills, Experience with microservices communication, Ability to lead architectural initiatives, Mentoring experience for engineers 📃 Skills: Ruby, Rails, Kubernetes, CI/CD, IaC, API, Microservices, DistributedSystems 🏢 Description: We are looking for an experienced Senior Ruby on Rails Developer to join the team responsible for development of the product, which is evolving into a modern, cloud‑ready solution. In this role, you will have opportunity to influence architectural decisions, contribute production‑ready code, and collaborate closely with cross‑functional teams. Your daily responsibilities: Build and improve core platform services and APIs Design scalable, distributed system architecture Implement and optimize key components in the codebase Set engineering standards for reliability and maintainability Drive deployments using Kubernetes and CI/CD automation Collaborate across teams to align technical and product goals. Requirements: 5+ years of software engineering experience, including senior‑level work Strong proficiency in Ruby on Rails Experience building and scaling distributed systems Solid knowledge of Kubernetes, CI/CD, and IaC Strong skills in API design and microservice communication Ability to lead architectural initiatives and mentor other engineers. What we offer: Attractive salary and benefits package, including Multisport card, insurance, and medical care Hybrid work from the Krakow office International work environment in a product company Training and development opportunities within the organization Joining the greefield project with pure development. Apply now!

🏢 Summary: Senior/Lead Ruby on Rails role focused on leading backend architecture and development while supporting frontend integration with React. The position involves driving technical direction, ensuring scalability and performance, and maintaining high code quality across the project. The role also acts as a technical point of contact aligning engineering outcomes with business goals. 🗂️ Requirements: Mastery of Ruby on Rails, Expert-level Ruby proficiency, Experience designing scalable backend architectures, Experience with React, Proven experience leading technical projects or modules, Ability to conduct code reviews and enforce best practices 📃 Skills: Ruby, Rails, React, Backend, Architecture, REST, Git, SQL 🏢 Description: We are looking for a high-level Ruby on Rails Expert to take a key role in the development team. This position is designed for someone who excels in backend architecture but can also navigate the frontend landscape when needed. As a Senior or Lead Developer, you will be responsible for the technical direction of the project, ensuring high performance, and maintaining a robust codebase while communicating effectively with international stakeholders. Responsibilities Technical Leadership: Leading the backend development lifecycle using Ruby on Rails . Architecture: Designing and implementing scalable, secure, and maintainable backend services. Full-stack Support: Collaborating on the frontend layer, specifically with React (experience here is a big plus). Code Quality: Conducting code reviews, mentoring team members, and establishing best development practices. Communication: Acting as a technical point of contact, ensuring clear alignment between technical goals and business needs. Requirements Expertise: Mastery of Ruby on Rails and the Ruby language. Frontend: Practical experience with React (highly desirable). Ownership: Proven ability to lead projects or significant technical modules. Soft Skills: Proactive attitude, strong problem-solving skills, and a "Lead" mindset.