Ruby on Rails Developer

🏢 Summary: Senior Ruby on Rails engineer role focused on designing and building scalable, production-grade backend systems and APIs in a remote-first environment. The position involves architectural decision-making, performance optimization, mentoring, and close collaboration with cross-functional teams. The offer includes flexible remote work within the EU, modern equipment, and a strong engineering culture emphasizing quality and automation. 🗂️ Requirements: 6+ years commercial experience with Ruby on Rails, Strong experience building production-grade APIs and backend systems, Advanced knowledge of PostgreSQL, Experience with database optimization and data modeling, Strong experience with RSpec and automated testing, Experience with AWS and/or Heroku, Understanding of distributed systems and system architecture, Experience working in Agile environments, English proficiency at B2+ level 📃 Skills: Ruby, Rails, PostgreSQL, RSpec, AWS, Heroku, APIs, SQL, Git, Agile 🏢 Description: About us LLInformatics is a forward-thinking IT consulting firm, trusted by clients across Europe and North America. We specialize in delivering complex projects on time, with exceptional quality, and always meeting the highest compliance standards. Our remote-first team of 130+ experts is passionate about building cutting-edge digital products that drive real results. With a focus on data-driven decisions, measurable outcomes, and a strategic mindset, we’re raising the bar in our industry—backed by a strong, collaborative work culture that fuels our success. Contract Type: B2B Location: Remote or in our Warsaw office Your Tasks and Responsibilities: Design, develop, and own complex backend features and APIs using Ruby on Rails. Architect scalable, reliable, and maintainable backend services. Collaborate closely with Product, QA, DevOps, and business stakeholders to translate requirements into technical solutions. Drive improvements in system performance, scalability, reliability, and engineering quality. Write clean, production-grade code with strong automated test coverage. Review code, establish engineering standards, and contribute to architectural decisions. Troubleshoot complex production issues and support stable, efficient deployments. Participate in agile delivery processes and drive continuous improvement initiatives. Mentor other engineers and actively contribute to knowledge sharing within the team. Requirements: 6+ years of commercial Ruby on Rails experience. Strong experience designing and building production-grade APIs and backend systems. Advanced knowledge of PostgreSQL, database optimization, and data modeling. Strong experience with RSpec, automated testing, and engineering best practices. Experience with AWS and/or Heroku. Good understanding of distributed systems, scalability, and system architecture. Experience working in Agile environments. Strong communication skills in English (B2+). Nice to Have: Technical leadership or mentoring experience. Experience with observability, monitoring, and performance optimization. Experience participating in architectural discussions and technical decision-making. Experience working directly with international stakeholders. Why join us? Flexible Working Hours – We focus on results! Manage your time, keep your team informed about your availability, and attend key meetings. Work from Anywhere – Choose your ideal setup! Work 100% remotely within the EU , go hybrid , or enjoy our Warsaw office , fully equipped for productivity. Comprehensive Onboarding – From day one, we ensure you feel comfortable and supported, so you can quickly become part of the team. Flat Structure – We value initiative and open communication. Every voice matters here! Positive Company Culture & Team Spirit – We create an environment where everyone feels appreciated and comfortable. Modern Work Methods – We use cutting-edge project management techniques inspired by the IT world. Transparent Communication – Regular 360° feedback sessions and mentor support to help you grow. Top-Notch Equipment – Get a MacBook for your work. If you choose to work from our Warsaw office , you'll also have access to a 34” (16:9) widescreen monitor and an ergonomic standing desk . Weekly English Lessons – Optional classes with a native speaker to help you improve your skills.

🏢 Summary: B2B contract for a senior backend-focused engineer to design and develop scalable APIs and services using Ruby on Rails, with supporting frontend work in React. The role involves building production-grade systems, ensuring high test coverage, and improving performance, reliability, and scalability in a distributed environment. 🗂️ Requirements: 6+ years commercial experience with Ruby on Rails, Experience building production APIs and backend systems, Entry-level experience with React (components, state management, API integration), Knowledge of PostgreSQL and relational databases, Experience with RSpec and automated testing, Experience with AWS and/or Heroku, Understanding of scalable and distributed systems, Experience working in Agile teams, English and Polish at minimum B2+ 📃 Skills: Ruby, Rails, React, PostgreSQL, SQL, RSpec, AWS, Heroku, API, REST, JavaScript, Git 🏢 Description: About us LLInformatics is a forward-thinking IT consulting firm, trusted by clients across Europe and North America. We specialize in delivering complex projects on time, with exceptional quality, and always meeting the highest compliance standards. Our remote-first team of 130+ experts is passionate about building cutting-edge digital products that drive real results. With a focus on data-driven decisions, measurable outcomes, and a strategic mindset, we’re raising the bar in our industry—backed by a strong, collaborative work culture that fuels our success. Contract Type: B2B Location: Remote or in our Warsaw office Your Tasks and Responsibilities: Design and develop backend features and APIs using Ruby on Rails as the primary technology stack. Contribute to frontend development in React, including building components and integrating APIs when needed. Build scalable backend services and APIs powering applications. Develop reusable frontend components and maintain a clean UI architecture. Collaborate directly with Product, Design, QA, and DevOps teams to deliver business-focused solutions. Improve application performance, reliability, scalability, and maintainability. Write clean, production-grade code with strong test coverage (unit, integration, E2E). Review code, maintain engineering standards, and support technical decision-making. Troubleshoot production issues and support stable deployments. Participate in agile delivery processes and contribute to continuous improvement. Support knowledge sharing and technical mentorship within the team. Requirements: 6+ years of commercial Ruby on Rails experience. Solid entry-level React experience (components, state management, API integration). Strong experience building production APIs and backend systems. Good knowledge of PostgreSQL and relational databases. Experience with RSpec, automated testing, and strong engineering practices. Experience with AWS and/or Heroku. Understanding of scalable and distributed systems. Experience working in Agile teams. Strong communication skills in English at a minimum B2+ level. Nice to Have: Tech Lead or mentoring experience. Experience with observability, monitoring, and performance optimization. Experience working directly with international stakeholders. Why join us? Flexible Working Hours – We focus on results! Manage your time, keep your team informed about your availability, and attend key meetings. Work from Anywhere – Choose your ideal setup! Work 100% remotely within the EU , go hybrid , or enjoy our Warsaw office , fully equipped for productivity. Comprehensive Onboarding – From day one, we ensure you feel comfortable and supported, so you can quickly become part of the team. Flat Structure – We value initiative and open communication. Every voice matters here! Positive Company Culture & Team Spirit – We create an environment where everyone feels appreciated and comfortable. Modern Work Methods – We use cutting-edge project management techniques inspired by the IT world. Transparent Communication – Regular 360° feedback sessions and mentor support to help you grow. Top-Notch Equipment – Get a MacBook for your work. If you choose to work from our Warsaw office , you'll also have access to a 34” (16:9) widescreen monitor and an ergonomic standing desk . Weekly English Lessons – Optional classes with a native speaker to help you improve your skills.

🏢 Summary: B2B contract for a Senior Ruby on Rails Developer to build and enhance a client platform, focusing on backend development, testing, performance optimization, and occasional React frontend work. The role involves solving complex engineering challenges, conducting code reviews, and collaborating with cross-functional teams in a remote-first environment. Emphasis is placed on scalable, reliable systems and data-driven product development. 🗂️ Requirements: 5+ years Ruby on Rails experience, Strong knowledge of ActiveRecord, Experience with RSpec, Experience with AWS or Heroku in production, Experience with PostgreSQL or other RDBMS, Experience with TDD and automated testing, Experience building MVC-based server-side applications, Experience building React components and integrating APIs, Understanding of distributed systems, Practical knowledge of REST APIs, B2+ level Polish and English, Experience with Agile methodologies 📃 Skills: Ruby, Rails, ActiveRecord, RSpec, AWS, Heroku, PostgreSQL, RDBMS, TDD, MVC, React, REST, Scrum, Kanban 🏢 Description: About us LLInformatics is a forward-thinking IT consulting firm, trusted by clients across Europe and North America. We specialize in delivering complex projects on time, with exceptional quality, and always meeting the highest compliance standards. Our remote-first team of 130+ experts is passionate about building cutting-edge digital products that drive real results. With a focus on data-driven decisions, measurable outcomes, and a strategic mindset, we’re raising the bar in our industry—backed by a strong, collaborative work culture that fuels our success. Contract Type: B2B Location: Remote or in our Warsaw office Your Tasks and Responsibilities: Implementing new functionalities on our client’s platform. Solving complex programming challenges while improving your knowledge. Conducting regular code reviews / PR reviews for your colleagues. Maintaining existing code and fixing bugs. Writing unit, integration, and E2E tests. Contributing to frontend components using React when needed. Supporting rapid iteration, experimentation, and data-driven development initiatives. Optimizing application performance, reliability, and scalability. Collaborating with Product Managers and cross-functional teams to align engineering execution with product vision. Requirements: 5+ years of experience in Ruby on Rails. Familiarity with Active Record and RSpec. Experience working on production applications in AWS or Heroku. Experience working with RDBMS like PostgreSQL. Experience writing tests / following a TDD approach or strong testing culture. Experience building server-side applications using the MVC pattern or similar. React experience (building components, integrating APIs). Understanding distributed systems and resilient applications. Practical knowledge of REST API communication. Polish and English at B2+ minimum level. Familiarity with Agile methodologies (Scrum, Kanban). Experience as a tech team lead is a strong plus. Demonstrated ability to leverage AI tools to improve workflows or development efficiency is a plus. Why join us? Flexible Working Hours – We focus on results! Manage your time, keep your team informed about your availability, and attend key meetings. Work from Anywhere – Choose your ideal setup! Work 100% remotely within the EU , go hybrid , or enjoy our Warsaw office , fully equipped for productivity. Comprehensive Onboarding – From day one, we ensure you feel comfortable and supported, so you can quickly become part of the team. Flat Structure – We value initiative and open communication. Every voice matters here! Positive Company Culture & Team Spirit – We create an environment where everyone feels appreciated and comfortable. Modern Work Methods – We use cutting-edge project management techniques inspired by the IT world. Transparent Communication – Regular 360° feedback sessions and mentor support to help you grow. Top-Notch Equipment – Get a MacBook for your work. If you choose to work from our Warsaw office , you'll also have access to a 34” (16:9) widescreen monitor and an ergonomic standing desk . Weekly English Lessons – Optional classes with a native speaker to help you improve your skills.

🏢 Summary: Senior Ruby on Rails Developer responsible for building and maintaining production-grade server-side applications, implementing new features, and ensuring high code quality through testing and reviews. The role involves working with AWS-based environments, optimizing performance and scalability, and contributing to frontend components in React. The position requires close collaboration with cross-functional teams in a remote or hybrid setup. 🗂️ Requirements: 6+ years of experience with Ruby on Rails, Experience with Active Record and RSpec, Experience with AWS or Heroku in production environments, Experience with PostgreSQL or other RDBMS, Experience writing unit, integration, and E2E tests, Experience with TDD or strong testing practices, Experience building applications using MVC pattern, Experience building React components and integrating APIs, Understanding of distributed systems, Experience designing and consuming REST APIs, Knowledge of Agile methodologies (Scrum or Kanban), Polish and English at minimum B2 level 📃 Skills: Ruby, Rails, ActiveRecord, RSpec, AWS, Heroku, PostgreSQL, RDBMS, React, REST, MVC, TDD, Scrum, Kanban 🏢 Description: About us LLInformatics is a forward-thinking IT consulting firm, trusted by clients across Europe and North America. We specialize in delivering complex projects on time, with exceptional quality, and always meeting the highest compliance standards. Our remote-first team of 130+ experts is passionate about building cutting-edge digital products that drive real results. With a focus on data-driven decisions, measurable outcomes, and a strategic mindset, we’re raising the bar in our industry—backed by a strong, collaborative work culture that fuels our success. Contract Type: B2B Location: Remote or in our Warsaw office Your Tasks and Responsibilities: Implementing new functionalities on our client’s platform. Solving complex programming challenges while improving your knowledge. Conducting regular code reviews / PR reviews for your colleagues. Maintaining existing code and fixing bugs. Writing unit, integration, and E2E tests. Contributing to frontend components using React when needed. Supporting rapid iteration, experimentation, and data-driven development initiatives. Optimizing application performance, reliability, and scalability. Collaborating with Product Managers and cross-functional teams to align engineering execution with product vision. Requirements: 6+ years of experience in Ruby on Rails. Familiarity with Active Record and RSpec. Experience working on production applications in AWS or Heroku. Experience working with RDBMS like PostgreSQL. Experience writing tests / following a TDD approach or strong testing culture. Experience building server-side applications using the MVC pattern or similar. React experience (building components, integrating APIs). Understanding distributed systems and resilient applications. Practical knowledge of REST API communication. Polish and English at B2+ minimum level. Familiarity with Agile methodologies (Scrum, Kanban). Experience as a tech team lead is a strong plus. Demonstrated ability to leverage AI tools to improve workflows or development efficiency is a plus. Why join us? Flexible Working Hours – We focus on results! Manage your time, keep your team informed about your availability, and attend key meetings. Work from Anywhere – Choose your ideal setup! Work 100% remotely within the EU , go hybrid , or enjoy our Warsaw office , fully equipped for productivity. Comprehensive Onboarding – From day one, we ensure you feel comfortable and supported, so you can quickly become part of the team. Flat Structure – We value initiative and open communication. Every voice matters here! Positive Company Culture & Team Spirit – We create an environment where everyone feels appreciated and comfortable. Modern Work Methods – We use cutting-edge project management techniques inspired by the IT world. Transparent Communication – Regular 360° feedback sessions and mentor support to help you grow. Top-Notch Equipment – Get a MacBook for your work. If you choose to work from our Warsaw office , you'll also have access to a 34” (16:9) widescreen monitor and an ergonomic standing desk . Weekly English Lessons – Optional classes with a native speaker to help you improve your skills.

🏢 Summary: B2B contract for a Ruby on Rails Developer to build and maintain a client platform, implement new features, and ensure performance and reliability in a remote or hybrid setup. The role involves backend development with Rails, testing, database management, and occasional frontend support with React. You will collaborate in an Agile team to deliver high-quality, production-ready solutions. 🗂️ Requirements: 3+ years experience with Ruby on Rails, Knowledge of Active Record, Knowledge of RSpec, Experience with production applications, Familiarity with relational databases, Experience writing unit and integration tests, Understanding of MVC architecture, Basic experience with React, Understanding of REST API principles, English B2 level minimum, Polish B2 level minimum, Familiarity with Agile methodologies 📃 Skills: Ruby, Rails, ActiveRecord, RSpec, PostgreSQL, React, REST, AWS, Heroku, Scrum, Kanban, MVC 🏢 Description: About us LLInformatics is a forward-thinking IT consulting firm, trusted by clients across Europe and North America. We specialize in delivering complex projects on time, with exceptional quality, and always meeting the highest compliance standards. Our remote-first team of 130+ experts is passionate about building cutting-edge digital products that drive real results. With a focus on data-driven decisions, measurable outcomes, and a strategic mindset, we’re raising the bar in our industry—backed by a strong, collaborative work culture that fuels our success. Contract Type: B2B Location: Remote or in our Warsaw office Your Tasks and Responsibilities: Implementing new features on our client’s platform. Solving programming challenges and continuously developing your skills. Participating in code reviews and collaborating with team members. Maintaining the existing codebase and fixing bugs. Writing unit and integration tests (E2E is a plus). Supporting frontend development using React when needed. Contributing to product improvements through experimentation and iteration. Taking care of application performance and reliability. Collaborating with Product Managers and team members to deliver high-quality solutions. Requirements: 3+ years of experience with Ruby on Rails. Good knowledge of Active Record and RSpec. Experience working with production applications (AWS or Heroku is a plus). Familiarity with relational databases (e.g., PostgreSQL). Experience writing tests and understanding of testing best practices. Understanding of the MVC pattern or similar architectures. Basic experience with React (components, API integration). Understanding of REST API principles. English and Polish at a minimum B2 level. Familiarity with Agile methodologies (Scrum, Kanban). Nice to have: Experience with distributed systems. Interest in using AI tools to improve development workflow. Why join us? Flexible Working Hours – We focus on results! Manage your time, keep your team informed about your availability, and attend key meetings. Work from Anywhere – Choose your ideal setup! Work 100% remotely within the EU , go hybrid , or enjoy our Warsaw office , fully equipped for productivity. Comprehensive Onboarding – From day one, we ensure you feel comfortable and supported, so you can quickly become part of the team. Flat Structure – We value initiative and open communication. Every voice matters here! Positive Company Culture & Team Spirit – We create an environment where everyone feels appreciated and comfortable. Modern Work Methods – We use cutting-edge project management techniques inspired by the IT world. Transparent Communication – Regular 360° feedback sessions and mentor support to help you grow. Top-Notch Equipment – Get a MacBook for your work. If you choose to work from our Warsaw office , you'll also have access to a 34” (16:9) widescreen monitor and an ergonomic standing desk . Weekly English Lessons – Optional classes with a native speaker to help you improve your skills.

🏢 Summary: B2B role for an experienced QA Automation Engineer/SDET to design, develop, and scale Python-based UI and backend test automation frameworks for complex distributed systems. The position focuses on improving automation standards, reliability, and quality metrics while working with CI/CD pipelines and event-driven architectures. The role involves end-to-end ownership of test automation across multiple product areas in a remote or Warsaw-based setup. 🗂️ Requirements: Minimum 4+ years in Software Testing, QA Engineering or SDET roles, Strong experience in designing and developing test automation frameworks at scale, Advanced Python programming skills, Experience with API and backend testing in distributed systems, Hands-on experience with UI test automation tools, Strong SQL knowledge with ability to write complex queries, Experience with CI/CD pipelines and related tools, Practical knowledge of Linux environments and networking concepts, Experience with event-driven architectures or messaging systems, Strong debugging and log analysis skills, Ability to work independently and own automation across product areas, Experience contributing to or improving automation frameworks and standards 📃 Skills: Python, PyTest, Playwright, Selenium, SQL, Linux, Kafka, CircleCI, Git, Jira, TestRail, Sentry, CI/CD, API, Networking 🏢 Description: LLInformatics is an IT consulting company with dozens of satisfied clients across Europe and North America. We serve businesses that expect their challenging projects to be delivered according to plan, with impeccable quality, and under strict compliance requirements. Our remote-first team of 100+ experts specializes in building high-quality digital products. We set a new standard in our industry through data-driven decisions, measurable outcomes, a strategic mindset, and a solid work culture. Contract Type: B2B Location: Warsaw or the possibility of Remote work Your tasks and responsibilities: Design, develop, and maintain UI test automation frameworks for complex systems Work extensively with Python-based frameworks (e.g., PyTest, Playwright) and enhance existing automation libraries Apply strong Linux and networking knowledge in daily testing and debugging Write complex SQL queries for test data validation and automation support Deliver high-quality defect reports with logs, root cause analysis, and reproduction details Work with event-driven systems (e.g., Kafka in payments-related domains) Use and promote tools such as Jira, TestRail, Sentry, Git, and CircleCI within CI/CD workflows Independently deliver automation across multiple product areas Identify gaps in test coverage and proactively mitigate automation risks Continuously improve automation effectiveness and contribute to QA KPIs Drive reliability improvements in frameworks, tools, and test suites Communicate risks, blockers, and technical issues Take full ownership of quality for assigned areas Collaborate closely with engineers, architects, DevOps, and product teams Participate in cross-team discussions to improve system testability and design Share knowledge and best practices across engineering teams Oversee consistency and quality of Python-based automation frameworks Define and evolve automation standards and best practices Guide teams in selecting high-value test cases for automation Track and report key automation and quality metrics Support onboarding of new engineers and ensure smooth ramp-up Requirements: Minimum 4+ years of experience in Software Testing, QA Engineering, or SDET roles Strong hands-on experience in test automation design and development at scale Advanced Python programming skills with ability to build and maintain robust automation frameworks Experience with API and backend testing in complex distributed systems Practical knowledge of UI test automation tools (e.g., Playwright, Selenium or similar) Strong understanding of SQL, including writing complex queries for test data validation and automation purposes Experience working with CI/CD pipelines and related tools (e.g., CircleCI or similar) Familiarity with Linux environments and networking concepts used in day-to-day testing work Experience with event-driven architectures or messaging systems (Kafka experience is a strong plus) Solid understanding of debugging, log analysis, and root cause investigation in production-like environments Ability to read, interpret, and work with technical and functional documentation in English Strong ownership mindset with ability to work independently across multiple product areas Proven ability to improve or contribute to automation frameworks and testing standards Experience mentoring or supporting junior engineers is highly valued Strong collaboration skills and experience working closely with developers, DevOps, and product teams Why join us? Comprehensive Onboarding – From day one, we ensure you feel comfortable and supported, so you can quickly become part of the team. Flat Structure – We value initiative and open communication. Every voice matters here! Positive Company Culture & Team Spirit – We create an environment where everyone feels appreciated and comfortable. Modern Work Methods – We use cutting-edge project management techniques inspired by the IT world. Transparent Communication – Regular 360° feedback sessions and mentor support to help you grow. Top-Notch Equipment – Get a MacBook for your work. If you choose to work from our Warsaw office, you'll also have access to a 34” (16:9) widescreen monitor and an ergonomic standing desk. Weekly English Lessons – Optional classes with a native speaker to help you improve your skills.

🏢 Summary: B2B IT Project Manager role responsible for end-to-end delivery of multiple software projects, ensuring timelines, budgets, and quality standards are met. The position focuses on operational ownership, KPI-driven performance tracking, and client-facing coordination in Agile and hybrid environments. Fully remote or Warsaw-based with strong emphasis on process optimization and delivery excellence. 🗂️ Requirements: Minimum 4 years experience as IT Project Manager or similar delivery role, Experience managing multiple software projects simultaneously, Experience in software delivery environments, Knowledge of Agile, Lean, and traditional project management methodologies, Experience with budget and resource management, KPI-driven performance monitoring experience, Fluent English (C1 minimum) 📃 Skills: Agile, Lean, ProjectManagement, RiskManagement, Budgeting, ResourcePlanning, KPI, SoftwareDelivery 🏢 Description: About us LLInformatics is a forward-thinking IT consulting firm, trusted by clients across Europe and North America. We specialize in delivering complex projects on time, with exceptional quality, and always meeting the highest compliance standards. Our remote-first team of 130+ experts is passionate about building cutting-edge digital products that drive real results. With a focus on data-driven decisions, measurable outcomes, and a strategic mindset, we’re raising the bar in our industry—backed by a strong, collaborative work culture that fuels our success. Contract Type: B2B Location: Remote/Warsaw Your Tasks & Responsibilities Project Delivery & Operational Ownership Plan, execute, and deliver projects on time, within budget, and according to quality standards Define project scope, objectives, deliverables, timelines, and resource allocation Coordinate day-to-day project operations across teams Track project progress, priorities, blockers, and risks Proactively resolve issues and escalate concerns early Ensure accountability and operational efficiency across all project stakeholders Continuously optimize project workflows, tools, and methodologies Client Relationship Management Serve as the main operational point of contact for clients Build strong client trust through responsiveness and transparent communication Provide regular updates on project progress, risks, and milestones Ensure clients consistently feel supported and well-informed Identify opportunities for delivery improvements and enhanced client satisfaction Budget, Resource & Staffing Management Monitor budgets, project costs, and resource efficiency Optimize resource planning and task distribution across teams Define staffing and hiring needs for assigned projects/accounts Coordinate recruitment processes with technical interviewers Ensure strong alignment between client needs and team capabilities Quickly address underperformance or mismatches within project teams Team Operational Management Support team efficiency, collaboration, and overall project health Provide operational feedback to team members Help resolve team performance or collaboration challenges Foster alignment with company culture, values, and delivery expectations Performance Tracking & Continuous Improvement Monitor KPIs related to project delivery, client satisfaction, and operational effectiveness Prepare reports, analyses, and risk assessments Use data-driven insights to implement process improvements Contribute to refining internal project management standards and best practices Requirements Minimum 4 years of experience as an IT Project Manager or similar delivery role Strong ownership mentality and accountability Proven success managing multiple projects simultaneously Excellent organizational and planning capabilities Proactive communication and stakeholder management Strong problem-solving and decision-making skills Ability to work independently while managing multiple priorities Experience in software delivery environments Knowledge of Agile, Lean, and traditional project management methodologies Analytical mindset with KPI-driven decision-making Strong cultural alignment and team leadership capabilities Fluent English (minimum C1) Why Join LLInformatics? Flexible working hours focused on outcomes Work from anywhere in the EU, hybrid, or from our Warsaw office Comprehensive onboarding and mentor support Flat organizational structure with real influence on company processes High-trust, positive team culture Modern project management practices Transparent communication and regular feedback Premium equipment package (MacBook + office workstation setup) Optional weekly English lessons with native speakers Recruitment Process Stage 1: 30-minute video interview with the Recruitment Team Stage 2: 1-hour video interview with the Management Team

🏢 Summary: A junior developer academy program offering hands-on experience with Ruby on Rails under mentorship, leading to potential full-time collaboration. Participants will build features, fix bugs, and write tests while deepening their understanding of web application development. The program starts on-site in Warsaw with the possibility of remote work later. 🗂️ Requirements: Basic knowledge of Ruby on Rails, Basic knowledge of JavaScript, Understanding of web application architecture, Ability to write unit, integration, and end-to-end tests, Upper-Intermediate English (B2+) 📃 Skills: Ruby, Rails, JavaScript, UnitTesting, IntegrationTesting, E2ETesting 🏢 Description: 🚀 LLI Academy 3rd Edition: Now Recruiting! We’re excited to launch the third edition of our LLI Academy – an initiative dedicated to discovering talented junior developers who are passionate about the IT world, coding, and eager to grow their skills in a professional environment. This program is designed to give promising developers the opportunity to gain hands-on experience, receive mentorship, and become a part of our dynamic team. Our previous editions were a great success, resulting in continued cooperation with amazing junior developers who joined our company full-time. Now, we’re looking for the next wave of talent to join us! About us LLInformatics is a forward-thinking IT consulting firm, trusted by clients across Europe and North America. We specialize in delivering complex projects on time, with exceptional quality, and always meeting the highest compliance standards. Our remote-first team of 100+ experts is passionate about building cutting-edge digital products that drive real results. With a focus on data-driven decisions, measurable outcomes, and a strategic mindset, we’re raising the bar in our industry, backed by a strong, collaborative work culture that fuels our success. 📍 Location: Warsaw (on-site for first 3 months), then possibility of remote work📄 Contract Type: UZ Your tasks and responsibilities: Develop your coding skills with the support of mentors and a structured curriculum Implement new features and functionalities Solve programming challenges while deepening your understanding of Ruby Participate in regular code reviews and receive feedback from experienced developers Maintain and improve existing codebases (bug fixing, refactoring) Write unit, integration, and end-to-end tests Requirements: Basic knowledge of Ruby on Rails Basic knowledge of JavaScript Eagerness to learn, improve, and tackle new challenges Logical and critical thinking skills Understanding of how web applications work A proactive, hands-on attitude towards solving problems Upper-Intermediate English ( B2+ ) Why join us? Flexible Working Hours – We focus on results! Manage your time, keep your team informed about your availability, and attend key meetings. Comprehensive Onboarding – From day one, we ensure you feel comfortable and supported, so you can quickly become part of the team. Flat Structure – We value initiative and open communication. Every voice matters here! Positive Company Culture & Team Spirit – We create an environment where everyone feels appreciated and comfortable. Modern Work Methods – We use cutting-edge project management techniques inspired by the IT world. Transparent Communication – Regular 360° feedback sessions and mentor support to help you grow. Top-Notch Equipment – Get a MacBook for your work. If you choose to work from our Warsaw office, you'll also have access to a 34” (16:9) widescreen monitor and an ergonomic standing desk. Weekly English Lessons – Optional classes with a native speaker to help you improve your skills.

🏢 Summary: Development role in an international team building a modern SaaS platform for the life science sector, focused on data management, process automation, and research tools. The position involves designing and developing a web application and APIs using Ruby on Rails, contributing to architecture decisions, and optimizing system performance and scalability. Work is carried out in an Agile environment with real impact on a global product. 🗂️ Requirements: Minimum 3 years of experience with Ruby on Rails, Experience building web applications, Experience with JavaScript, HTML, CSS, Experience designing and integrating APIs, Experience with AWS, Experience with CI/CD pipelines, Experience with Git version control, English proficiency at B2 level or higher, Availability for onsite onboarding (first 2 weeks) 📃 Skills: Ruby, Rails, JavaScript, HTML, CSS, API, AWS, CI/CD, Git, MySQL, Docker, ElasticSearch, Hotwire, React 🏢 Description: Dołącz do międzynarodowego zespołu pracującego nad nowoczesną platformą SaaS wykorzystywaną w obszarze life science. Projekt dotyczy rozwiązań wspierających zarządzanie danymi, automatyzację procesów oraz rozwój narzędzi badawczych wykorzystywanych przez organizacje na całym świecie. Lokalizacja biura: Wrocław. Model pracy: zdalnie w większości czasu pracy (praca z biura 1 raz na 2 tygodnie). Stack technologiczny projektu: Ruby on Rails, JavaScript, Hotwire / React, API, MySQL, AWS, Git, CI/CD, Docker, ElasticSearch . Zespół: liczy obecnie ok. 5 osób i działa w środowisku międzynarodowym. Zespół zlokalizowany jest częściowo w Polsce (Wrocław), Norwegii i Izraelu. Zakres obowiązków: Projektowanie i rozwój aplikacji webowej w Ruby on Rails Tworzenie i rozwój API platformy Implementacja nowych funkcjonalności oraz rozwój istniejących modułów Dbanie o jakość kodu (testy, utrzymanie, refaktoryzacja) Współpraca z zespołem produktowym oraz interesariuszami biznesowymi Udział w projektowaniu architektury i podejmowaniu decyzji technologicznych Optymalizacja wydajności oraz skalowalności systemu Wykorzystanie narzędzi AI wspierających proces developmentu (np. code review, generowanie kodu, testy) Praca w środowisku Agile w międzynarodowym zespole Główne wymagania: Minimum 3 lata doświadczenia w tworzeniu aplikacji webowych w Ruby on Rails Doświadczenie w pracy z JavaScript, HTML, CSS Znajomość pracy z API (projektowanie, integracje) Doświadczenie z AWS oraz CI/CD Doświadczenie z systemami kontroli wersji (Git) Znajomość języka angielskiego na poziomie min. B2 Umiejętność pracy w zespole oraz komunikacji w środowisku międzynarodowym Samodzielność, odpowiedzialność za realizowane zadania Gotowość do pracy stacjonarnej podczas onboardingu (2 pierwsze tygodnie pracy) Mile widziane: Doświadczenie z Hotwire lub React Doświadczenie z Docker, MySQL, ElasticSearch Doświadczenie w projektach SaaS Doświadczenie z narzędziami AI wspierającymi development Znajomość domeny life science Wyższe wykształcenie w obszaru nauk przyrodniczych Firma oferuje: Stałą, długofalową współpracę w oparciu o kontrakt B2B (+25 dni płatnego urlopu) Pracę zdalną w większości czasu pracy (praca z biura we Wrocławiu 1 raz na 2 tygodnie) Udział w rozwoju globalnego produktu technologicznego Pracę w międzynarodowym środowisku Realny wpływ na rozwój systemu oraz decyzje technologiczne Stabilny, długoterminowy projekt produktowy Kartę Multisport Pracę w zespole nastawionym na współpracę i dzielenie się wiedzą

🏢 Summary: Software Engineer role focused on building and scaling a multi-tenant customer engagement platform for enterprise contact centers. The position involves developing backend services, real-time communication components, and cloud-native infrastructure using Ruby on Rails, Node.js, and Kubernetes on Azure. You will work on distributed systems, integrations, and CI/CD pipelines to ensure reliability, scalability, and security. 🗂️ Requirements: Strong experience with Ruby on Rails 7.x and Ruby 3.x, Experience with Node.js and Express.js, Hands-on experience with PostgreSQL schema design and query optimization, Experience designing and maintaining REST APIs, Experience with authentication and authorization mechanisms (JWT, OAuth2, OIDC, policy patterns), Experience with background job systems, Experience with Redis (caching, pub/sub), Experience with Docker and writing Dockerfiles, Understanding of Kubernetes and Helm, Experience with CI/CD pipelines, Experience integrating third-party REST/webhook APIs 📃 Skills: Ruby, Rails, PostgreSQL, Redis, Node.js, Express, WebSockets, Docker, Kubernetes, Azure, AKS, Helm, GitLab, CI/CD, RSpec, Jest, JWT, OAuth2, OIDC, Pundit, Devise, DelayedJob, ActiveJob, Sidekiq, JSON:API, Graphiti, Prometheus, NewRelic, SonarCloud, Aikido, Genesys, Vonage, WebRTC, SIP, Terraform, Cloudflare, React 🏢 Description: About Us VC-backed, 15-person team across Poland, Mexico & the Philippines - with global expansion underway. We’re defining a new category: a customer contact & collaboration layer on top of enterprise contact center and CRM platforms - already trusted by global enterprises across Europe, Asia, and the Americas. Our platform is used by enterprise clients across multiple industries, with a strong focus on reliability, scalability, security, and seamless real-time communication experiences. We combine modern cloud-native architecture with deep expertise in WebRTC, contact center integrations, and customer engagement technologies. As a rapidly growing company, we maintain a strong engineering culture built around ownership, collaboration, continuous improvement, and pragmatic problem-solving. We value people who are curious, proactive, and excited about building meaningful products in a fast-moving environment. About the Role We’re looking for a Software Engineer with strong technical skills and hands-on experience building modern distributed systems and web applications. In this role, you’ll help design, develop, maintain, and improve a multi-tenant customer engagement platform used primarily by enterprise contact centers. You’ll work across backend services, infrastructure, and internal tooling to ensure our systems remain scalable, reliable, secure, and easy to evolve. Our platform combines multiple technologies and real-time communication channels, including voice, video, chat, callbacks and many more, integrated with providers such as Genesys Cloud and Vonage. The backend architecture includes: A Ruby on Rails API responsible for core business logic, authentication, integrations, and account management Several Node.js services handling real-time signaling, visitor data processing, and analytics Cloud-native infrastructure running on Kubernetes and Azure services You’ll work closely within a small, highly collaborative engineering team where ownership and initiative are highly valued. We’re looking for someone who enjoys solving complex technical challenges, moving quickly, contributing ideas, and building high-quality software that delivers real value to customers. Responsibilities Develop and maintain the core REST/JSON:API backend in Ruby on Rails 7 (PostgreSQL, Redis, Puma, Delayed Job) + upgrade to RoR 8 Own the Node.js signalling server built on Express + WebSockets Extend and debug integrations with Genesys Cloud and Vonage Write and maintain authorization policies and multi-tenant access control logic Design and run database migrations on a mature PostgreSQL schema (200+ migrations) Work within a Kubernetes on Azure AKS environment - understand Helm charts, environment configs, and deployment pipelines Participate in GitLab CI/CD - security checks (SonarCloud, Aikido.dev), Docker builds, staged deploys Gradually improve test coverage using RSpec (Rails) and Jest (Node.js) Required Skills Ruby on Rails Rails 7.x, Ruby 3.x (-> 8.x, 4.x) PostgreSQL - schema design, migrations, query optimization REST API design; experience with JSON:API / Graphiti is a plus Background jobs: Delayed Job, ActiveJob, or Sidekiq Authentication: Devise, JWT, OAuth2, OIDC Authorization: Pundit or similar policy pattern Node.js Node.js 24+, Express.js WebSockets Redis (caching, pub/sub, locking patterns) Azure Storage (Tables, Queues) or equivalent cloud storage SDKs Comfort with async code General Backend Designing and consuming third-party REST/webhook APIs Docker - writing and maintaining Dockerfiles Kubernetes basics - reading Helm charts, understanding namespaces and config maps Git + CI/CD pipelines Structured logging and APM tools (New Relic, Prometheus) Nice to Have Experience with Genesys Cloud or other contact center solution Experience with Vonage or other CPaaS telephony (SIP, WebRTC) Terraform / Azure infrastructure Cloudflare Workers React (the frontend teams will occasionally need backend pairing) Compensation 19-24k B2B Meaningful ESOP upside (VC-backed) 26 days of paid holiday