Senior Ruby on Rails Developer

🏢 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.

🏢 Summary: The offer is for a Ruby on Rails Developer to build and maintain modern web applications for a new project, contributing to scalable solutions and microservices architecture. The role involves working with Ruby on Rails as the core technology, with exposure to Node.js and React, in a collaborative and agile environment. 🗂️ Requirements: Proven commercial experience with Ruby on Rails, Experience building modern web applications, Experience with Node.js and/or React, Understanding of microservices architecture, Ability to participate in code reviews and follow coding standards, Very good English skills 📃 Skills: Ruby, Rails, Node.js, React, Microservices, REST, Git 🏢 Description: We are seeking a skilled Ruby on Rails Developer to join our team for an exciting new project. Responsibilities Develop and maintain web applications using Ruby on Rails as the primary technology. Collaborate with cross-functional teams to design and implement scalable solutions. Contribute to the architecture and development of microservices, where applicable. Utilize Node.js and React technologies to enhance application features and performance. Participate in code reviews and ensure adherence to best practices and coding standards. Communicate effectively with stakeholders to understand project requirements and deliver solutions accordingly. Qualifications Proven commercial experience in Ruby on Rails development. Experience working with modern web applications and frameworks. Exposure to Node.js and/or React technologies. Understanding of microservices architecture is preferred. Strong problem-solving skills and ability to work collaboratively within a team setting. Very good English level. Benefits Opportunity to participate in a cutting-edge project with a dynamic and innovative team. Professional growth through engagement in technical interviews and project development phases. Remote work (Poland). Exposure to a diverse technology stack including Ruby on Rails, Node.js, React, and microservices. Unique TEAL culture, relationship- and respect-driven community, non-corporate atmosphere. Agile approach and no bureaucracy. Outstanding integration trips to various places in Europe for all employees. Activities to support your well-being and health. Luxmed Gold Extended medical care and Multisport Plus benefit.

🏢 Summary: Senior role focused on developing and maintaining a business applications ecosystem (CRM, document workflows, ERP and AI integrations) using Ruby on Rails. The position involves building integrations, processing documents, handling background jobs and realtime features, and deploying to self-managed Linux VPS infrastructure. It requires working on production systems and solving complex backend and integration challenges. 🗂️ Requirements: Very good knowledge of Ruby on Rails, Strong understanding of backend application architecture, Strong knowledge of SQL and relational databases, Experience with integrations and API design/debugging, Experience with background jobs and asynchronous processing, Ability to work with Linux/VPS environments 📃 Skills: Ruby, Rails, ActiveRecord, ActiveJob, SolidQueue, ActionCable, ActionMailer, ActionMailbox, MySQL, MSSQL, TinyTds, SQL, REST, KSeF, Claude, IMAP, Backblaze, Linux, Ubuntu, Puma, systemctl, crontab, logrotate, Tailscale, CombinePDF, Node.js, ERP, VPS 🏢 Description: Senior Ruby on Rails Backend Engineer Szukamy doświadczonego Ruby on Rails Backend Developera do rozwijania naszego ekosystemu aplikacji biznesowych (CRM, obieg dokumentów, workflow, integracje ERP, KSeF, automatyzacje procesów). Projekt obejmuje: integracje z systemami zewnętrznymi, przetwarzanie dokumentów, background jobs, kolejki, realtime events, deployment na własnej infrastrukturze VPS, integracje AI i ERP. To rola dla osoby, która dobrze odnajduje się w systemach produkcyjnych i lubi rozwiązywać realne problemy biznesowe. Idealnie, jeśli jesteś z okolic Trzebini / Chrzanowa — preferujemy osoby, z którymi możliwa będzie okazjonalna współpraca stacjonarna przy planowaniu i wdrożeniach. Stack technologiczny Backend / Rails Ruby on Rails 7.2 Active Record Active Job + Solid Queue Action Mailer Action Cable Action Mailbox Bazy danych MySQL MS SQL Server (TinyTds) migracje Rails indeksy JSON columns Integracje KSeF REST API Claude API (Anthropic) IMAP polling Backblaze B2 TinyTds / Optima ERP Deployment / infrastruktura Linux VPS (Ubuntu) Puma systemctl crontab logrotate Tailscale VPN Dokumenty / PDF CombinePDF generowanie i stemplowanie PDF Node.js CLI wrappers Szukamy osoby, która: ma bardzo dobrą znajomość Ruby on Rails, rozumie architekturę aplikacji backendowych, dobrze zna SQL i relacyjne bazy danych, potrafi projektować i debugować integracje, ma doświadczenie z background jobs i async processing, swobodnie pracuje na Linux/VPS. Mile widziane doświadczenie z KSeF, doświadczenie z ERP, znajomość MSSQL, doświadczenie z realtime systems, integracje AI, doświadczenie z dużymi workflow dokumentowymi. Oferujemy realny wpływ na architekturę systemów, dużą samodzielność, brak korporacyjnych procesów, ciekawe integracje i problemy techniczne, możliwość długoterminowej współpracy. Forma współpracy B2B lub FV full-time lub part-time zdalnie / hybrydowo

🏢 Summary: Senior Software Engineer role focused on building and maintaining scalable Ruby on Rails solutions for a clean-energy platform used by solar professionals. The position involves developing backend services and APIs, collaborating across teams, mentoring engineers, and contributing to high-quality product delivery in a hybrid work environment. 🗂️ Requirements: 5+ years of professional software engineering experience, Strong proficiency in Ruby on Rails, Experience with React, Knowledge of JavaScript, Knowledge of TypeScript, Clear communication skills, Ability to work in a distributed remote environment, Strong English communication skills 📃 Skills: Ruby, Rails, React, JavaScript, TypeScript, GraphQL, APIs 🏢 Description: Senior Software Engineer (Ruby on Rails) 💰 Salary: 19,000-28,000 PLN 🌎 Hybrid (2 days on site) ☑️ Full-time 🕦 Contract through Deel We’re looking for a Senior Software Engineer for a leading software provider in the clean-energy space, building technology that helps solar professionals design and sell solar projects accurately and at scale. Their platform has powered millions of solar designs and is recognized as one of the top remote-friendly and sustainability-focused companies in the industry. Requirements: 5+ years of professional software engineering experience. Strong proficiency with Ruby on Rails. Clear communication skills and comfort working cross-functionally. Familiarity with React and component-based frontend development. Working knowledge of JavaScript and/or TypeScript. Ability to thrive in a fully remote, distributed environment. Strong English skills (written and spoken). Nice to Have Experience with GraphQL . Interest in renewable energy, climate tech, or mission-driven products. Responsibilities: Build new features for a leading platform used by solar professionals for design and sales. Design and maintain reliable APIs that integrate smoothly with financial and sales partners. Develop secure, scalable backend services built for long-term stability and performance. Contribute to agile planning and help drive predictable, high-quality delivery. Mentor teammates, share knowledge, and strengthen the overall engineering culture. Take ownership of the services you build, including participating in on-call rotations. Benefits Health Coverage: Medical, dental, and vision insurance Internet & Mobile Stipend Work-From-Home Support (home office budget) Learning & Development support

🏢 Summary: Full-time Senior Software Engineer role focused on building and scaling a Ruby on Rails-based platform used by solar professionals to design and sell solar projects. The position involves developing secure, high-performance backend services, reliable APIs, and contributing to frontend features in a distributed, hybrid work environment. The engineer will also support agile delivery, system ownership, and technical mentorship. 🗂️ Requirements: 5+ years of professional software engineering experience, Strong proficiency in Ruby on Rails, Experience with React and component-based frontend development, Working knowledge of JavaScript or TypeScript, Experience designing and maintaining APIs, Experience building secure, scalable backend systems, Ability to work in distributed, remote environment, Strong English communication skills 📃 Skills: Ruby, Rails, React, JavaScript, TypeScript, GraphQL, API, Backend, Agile 🏢 Description: Senior Software Engineer (Ruby on Rails) 💰 Salary: 19,000-28,000 PLN 🌎 Hybrid (2 days on site) ☑️ Full-time 🕦 Contract through Deel We’re looking for a Senior Software Engineer for a leading software provider in the clean-energy space, building technology that helps solar professionals design and sell solar projects accurately and at scale. Their platform has powered millions of solar designs and is recognized as one of the top remote-friendly and sustainability-focused companies in the industry. Requirements: 5+ years of professional software engineering experience. Strong proficiency with Ruby on Rails. Clear communication skills and comfort working cross-functionally. Familiarity with React and component-based frontend development. Working knowledge of JavaScript and/or TypeScript. Ability to thrive in a fully remote, distributed environment. Strong English skills (written and spoken). Nice to Have Experience with GraphQL . Interest in renewable energy, climate tech, or mission-driven products. Responsibilities: Build new features for a leading platform used by solar professionals for design and sales. Design and maintain reliable APIs that integrate smoothly with financial and sales partners. Develop secure, scalable backend services built for long-term stability and performance. Contribute to agile planning and help drive predictable, high-quality delivery. Mentor teammates, share knowledge, and strengthen the overall engineering culture. Take ownership of the services you build, including participating in on-call rotations. Benefits Health Coverage: Medical, dental, and vision insurance Internet & Mobile Stipend Work-From-Home Support (home office budget) Learning & Development support

🏢 Summary: Senior Ruby Developer role focused on building and maintaining scalable Ruby on Rails web applications with strong PostgreSQL and testing expertise in a hybrid work model in Poland. The position involves architecture contributions, performance optimization, production support, and collaboration with cross-functional teams. The offer includes flexible work arrangements, career development programs, certifications, and comprehensive benefits. 🗂️ Requirements: 3+ years of experience with Ruby and Rails, Experience building scalable web applications, Hands-on expertise with PostgreSQL, Experience with query optimization and direct SQL usage, Experience with RSpec, Knowledge of TDD/BDD practices, Ability to work independently, English level B2 or higher 📃 Skills: Ruby, Rails, PostgreSQL, SQL, RSpec, TDD, BDD, Docker, Redis, ClickHouse, JavaScript, React, Angular, Vue, Sidekiq, RabbitMQ, CI/CD, Git 🏢 Description: We are looking for a Senior Ruby Developer to join our dynamic and collaborative team. The client is an American multinational enterprise specializing in software solutions, offering a cloud-based platform that facilitates the seamless automation, integration, and coordination of artificial intelligence (AI) functionalities across a wide range of applications, data environments, and IT systems. It is a hybrid position with required visits to the office in Wroclaw, Krakow, Gdansk, Warsaw, Katowice, Lodz or Poznan. Responsibilities Develop and maintain scalable, high-performance web applications using Ruby and Rails Optimize complex database queries and ensure efficient use of PostgreSQL Design and implement clean, maintainable code with strong adherence to TDD/BDD principles using RSpec Collaborate with cross-functional teams to define and deliver technical solutions that align with business goals Conduct code reviews and mentor junior developers to uphold quality standards Address scalability and performance issues, implementing enhancements to improve reliability Work closely with product owners to translate requirements into technical implementations Debug and troubleshoot production issues, identifying root causes and implementing responsive fixes Participate in architectural design and contribute to long-term system improvements Oversee deployment processes and ensure application stability in production environments Stay updated on emerging technologies and practices to bring innovative solutions to the team Requirements Strong experience with Ruby and the Rails ecosystem (3+ years) Proven ability to build scalable web applications Deep hands-on expertise in PostgreSQL, including query optimization and direct SQL usage Solid experience with RSpec and TDD/BDD testing practices Comfortable working independently with minimal supervision English level of minimum B2 (Upper-Intermediate) for effective communication Nice to have Experience using Docker for containerization Familiarity with Redis for caching or real-time data handling Exposure to ClickHouse for analytics or event logging Basic frontend experience with JavaScript and frameworks like React, Angular, or Vue.js Experience with background job processing tools like Sidekiq or RabbitMQ Understanding of CI/CD pipelines and Git-based workflows Good communication and collaboration skills We offer We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

🏢 Summary: Senior Ruby Developer role focused on building and maintaining scalable web applications using Ruby on Rails, PostgreSQL, and TDD/BDD practices in a hybrid work model across multiple cities in Poland. The position involves architecture contributions, performance optimization, deployment oversight, and collaboration with cross-functional teams. The offer includes flexible work arrangements, professional development opportunities, certifications, and comprehensive benefits. 🗂️ Requirements: 3+ years of experience with Ruby and Rails, Experience building scalable web applications, Strong PostgreSQL expertise, Experience with SQL query optimization, Experience with RSpec, Knowledge of TDD/BDD practices, Ability to work independently, English level B2 or higher 📃 Skills: Ruby, Rails, PostgreSQL, SQL, RSpec, TDD, BDD, Docker, Redis, ClickHouse, JavaScript, React, Angular, Vue, Sidekiq, RabbitMQ, CI/CD, Git 🏢 Description: We are looking for a Senior Ruby Developer to join our dynamic and collaborative team. The client is an American multinational enterprise specializing in software solutions, offering a cloud-based platform that facilitates the seamless automation, integration, and coordination of artificial intelligence (AI) functionalities across a wide range of applications, data environments, and IT systems. It is a hybrid position with required visits to the office in Wroclaw, Krakow, Gdansk, Warsaw, Katowice, Lodz or Poznan. Responsibilities Develop and maintain scalable, high-performance web applications using Ruby and Rails Optimize complex database queries and ensure efficient use of PostgreSQL Design and implement clean, maintainable code with strong adherence to TDD/BDD principles using RSpec Collaborate with cross-functional teams to define and deliver technical solutions that align with business goals Conduct code reviews and mentor junior developers to uphold quality standards Address scalability and performance issues, implementing enhancements to improve reliability Work closely with product owners to translate requirements into technical implementations Debug and troubleshoot production issues, identifying root causes and implementing responsive fixes Participate in architectural design and contribute to long-term system improvements Oversee deployment processes and ensure application stability in production environments Stay updated on emerging technologies and practices to bring innovative solutions to the team Requirements Strong experience with Ruby and the Rails ecosystem (3+ years) Proven ability to build scalable web applications Deep hands-on expertise in PostgreSQL, including query optimization and direct SQL usage Solid experience with RSpec and TDD/BDD testing practices Comfortable working independently with minimal supervision English level of minimum B2 (Upper-Intermediate) for effective communication Nice to have Experience using Docker for containerization Familiarity with Redis for caching or real-time data handling Exposure to ClickHouse for analytics or event logging Basic frontend experience with JavaScript and frameworks like React, Angular, or Vue.js Experience with background job processing tools like Sidekiq or RabbitMQ Understanding of CI/CD pipelines and Git-based workflows Good communication and collaboration skills We offer We gather like-minded people: Top tech minds driving innovation in AI, cloud and digital platform modernization Supportive team and agile, startup-like culture Hybrid by design mode and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Career development programs Thought leadership, mentoring, soft skills and well-being programs Certification (Anthropic, Gemini, GCP, Azure, AWS) English classes We cover it all: Stable pay Participation in the Employee Stock Purchase Plan with a 15% discount Benefits package (health insurance, multisport, shopping vouchers) Referral bonuses up to $2,000 Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and more Corporate, social and well-being events Please, note: Benefits listed above are available to employees only We are open for working with Contractors. Terms of B2B cooperation agreements are agreed individually We will reach out to selected candidates exclusively EPAM is global leader in AI transformation engineering and integrated consulting, serving Forbes Global 2000 companies and ambitious startups. With over thirty years of expertise in custom software, product and platform engineering, we empower our clients to become AI-Native enterprises, driving measurable value from innovation and digital investments.

🏢 Summary: Senior Ruby Developer role focused on building and maintaining scalable Ruby on Rails web applications with strong emphasis on PostgreSQL optimization, testing practices, and system reliability. The position involves collaboration with cross-functional teams, mentoring developers, and contributing to architectural improvements in a hybrid work model across multiple cities in Poland. The offer includes flexible work arrangements, professional development programs, certifications, and comprehensive benefits. 🗂️ Requirements: 3+ years of experience with Ruby and Rails, Experience building scalable web applications, Hands-on expertise in PostgreSQL, Query optimization and direct SQL usage, Experience with RSpec, Knowledge of TDD/BDD testing practices, Ability to work independently, English level B2 or higher 📃 Skills: Ruby, Rails, PostgreSQL, SQL, RSpec, TDD, BDD, Docker, Redis, ClickHouse, JavaScript, React, Angular, Vue, Sidekiq, RabbitMQ, CI/CD, Git, AWS, Azure, GCP 🏢 Description: We are looking for a Senior Ruby Developer to join our dynamic and collaborative team. The client is an American multinational enterprise specializing in software solutions, offering a cloud-based platform that facilitates the seamless automation, integration, and coordination of artificial intelligence (AI) functionalities across a wide range of applications, data environments, and IT systems. It is a hybrid position with required visits to the office in Wroclaw, Krakow, Gdansk, Warsaw, Katowice, Lodz or Poznan. Responsibilities Develop and maintain scalable, high-performance web applications using Ruby and Rails Optimize complex database queries and ensure efficient use of PostgreSQL Design and implement clean, maintainable code with strong adherence to TDD/BDD principles using RSpec Collaborate with cross-functional teams to define and deliver technical solutions that align with business goals Conduct code reviews and mentor junior developers to uphold quality standards Address scalability and performance issues, implementing enhancements to improve reliability Work closely with product owners to translate requirements into technical implementations Debug and troubleshoot production issues, identifying root causes and implementing responsive fixes Participate in architectural design and contribute to long-term system improvements Oversee deployment processes and ensure application stability in production environments Stay updated on emerging technologies and practices to bring innovative solutions to the team Requirements Strong experience with Ruby and the Rails ecosystem (3+ years) Proven ability to build scalable web applications Deep hands-on expertise in PostgreSQL, including query optimization and direct SQL usage Solid experience with RSpec and TDD/BDD testing practices Comfortable working independently with minimal supervision English level of minimum B2 (Upper-Intermediate) for effective communication Nice to have Experience using Docker for containerization Familiarity with Redis for caching or real-time data handling Exposure to ClickHouse for analytics or event logging Basic frontend experience with JavaScript and frameworks like React, Angular, or Vue.js Experience with background job processing tools like Sidekiq or RabbitMQ Understanding of CI/CD pipelines and Git-based workflows Good communication and collaboration skills We offer We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

🏢 Summary: Senior Ruby Developer role focused on building and maintaining scalable web applications using Ruby on Rails in a hybrid work model in Poland. The position involves backend development, database optimization, testing with TDD/BDD practices, architectural contributions, and collaboration with cross-functional teams. The offer includes flexible work arrangements, professional development opportunities, and comprehensive benefits. 🗂️ Requirements: 3+ years of experience with Ruby and Rails, Experience building scalable web applications, Hands-on expertise in PostgreSQL, Experience with query optimization and direct SQL usage, Experience with RSpec, Knowledge of TDD/BDD testing practices, Ability to work independently with minimal supervision, English level B2 or higher 📃 Skills: Ruby, Rails, PostgreSQL, SQL, RSpec, TDD, BDD, Docker, Redis, ClickHouse, JavaScript, React, Angular, Vue, Sidekiq, RabbitMQ, CI/CD, Git, AWS, Azure, GCP 🏢 Description: We are looking for a Senior Ruby Developer to join our dynamic and collaborative team. The client is an American multinational enterprise specializing in software solutions, offering a cloud-based platform that facilitates the seamless automation, integration, and coordination of artificial intelligence (AI) functionalities across a wide range of applications, data environments, and IT systems. It is a hybrid position with required visits to the office in Wroclaw, Krakow, Gdansk, Warsaw, Katowice, Lodz or Poznan. Responsibilities Develop and maintain scalable, high-performance web applications using Ruby and Rails Optimize complex database queries and ensure efficient use of PostgreSQL Design and implement clean, maintainable code with strong adherence to TDD/BDD principles using RSpec Collaborate with cross-functional teams to define and deliver technical solutions that align with business goals Conduct code reviews and mentor junior developers to uphold quality standards Address scalability and performance issues, implementing enhancements to improve reliability Work closely with product owners to translate requirements into technical implementations Debug and troubleshoot production issues, identifying root causes and implementing responsive fixes Participate in architectural design and contribute to long-term system improvements Oversee deployment processes and ensure application stability in production environments Stay updated on emerging technologies and practices to bring innovative solutions to the team Requirements Strong experience with Ruby and the Rails ecosystem (3+ years) Proven ability to build scalable web applications Deep hands-on expertise in PostgreSQL, including query optimization and direct SQL usage Solid experience with RSpec and TDD/BDD testing practices Comfortable working independently with minimal supervision English level of minimum B2 (Upper-Intermediate) for effective communication Nice to have Experience using Docker for containerization Familiarity with Redis for caching or real-time data handling Exposure to ClickHouse for analytics or event logging Basic frontend experience with JavaScript and frameworks like React, Angular, or Vue.js Experience with background job processing tools like Sidekiq or RabbitMQ Understanding of CI/CD pipelines and Git-based workflows Good communication and collaboration skills We offer We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

🏢 Summary: Senior Ruby Developer role focused on building and maintaining scalable Ruby on Rails applications for a cloud-based AI automation platform in a hybrid work model in Poland. The position involves backend development, database optimization, testing practices, architectural improvements, and collaboration with cross-functional teams. The offer includes flexible work options, professional development programs, certifications, and comprehensive benefits. 🗂️ Requirements: 3+ years of experience with Ruby and Rails, Experience building scalable web applications, Strong PostgreSQL expertise, SQL query optimization skills, Experience with RSpec, Knowledge of TDD/BDD practices, Ability to work independently, English level B2 or higher 📃 Skills: Ruby, Rails, PostgreSQL, SQL, RSpec, TDD, BDD, Docker, Redis, ClickHouse, JavaScript, React, Angular, Vue, Sidekiq, RabbitMQ, CI/CD, Git, AWS, Azure, GCP 🏢 Description: We are looking for a Senior Ruby Developer to join our dynamic and collaborative team. The client is an American multinational enterprise specializing in software solutions, offering a cloud-based platform that facilitates the seamless automation, integration, and coordination of artificial intelligence (AI) functionalities across a wide range of applications, data environments, and IT systems. It is a hybrid position with required visits to the office in Wroclaw, Krakow, Gdansk, Warsaw, Katowice, Lodz or Poznan. Responsibilities Develop and maintain scalable, high-performance web applications using Ruby and Rails Optimize complex database queries and ensure efficient use of PostgreSQL Design and implement clean, maintainable code with strong adherence to TDD/BDD principles using RSpec Collaborate with cross-functional teams to define and deliver technical solutions that align with business goals Conduct code reviews and mentor junior developers to uphold quality standards Address scalability and performance issues, implementing enhancements to improve reliability Work closely with product owners to translate requirements into technical implementations Debug and troubleshoot production issues, identifying root causes and implementing responsive fixes Participate in architectural design and contribute to long-term system improvements Oversee deployment processes and ensure application stability in production environments Stay updated on emerging technologies and practices to bring innovative solutions to the team Requirements Strong experience with Ruby and the Rails ecosystem (3+ years) Proven ability to build scalable web applications Deep hands-on expertise in PostgreSQL, including query optimization and direct SQL usage Solid experience with RSpec and TDD/BDD testing practices Comfortable working independently with minimal supervision English level of minimum B2 (Upper-Intermediate) for effective communication Nice to have Experience using Docker for containerization Familiarity with Redis for caching or real-time data handling Exposure to ClickHouse for analytics or event logging Basic frontend experience with JavaScript and frameworks like React, Angular, or Vue.js Experience with background job processing tools like Sidekiq or RabbitMQ Understanding of CI/CD pipelines and Git-based workflows Good communication and collaboration skills We offer We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.