Jobs Ruby

On behalf of our Client, Mobilunity is looking for a Ruby on Rails engineer to join our client’s distributed engineering team.
You will work on scalable cloud-native services, modern frontend applications, and a data-driven analytics platform supporting a global product used across multiple regions.

This is a hands-on role for an engineer who enjoys building microservices, designing reliable cloud infrastructure, and working across the full stack.

Must have skills:

- 4+ years of experience
- Ruby on Rails monolith on Heroku,
- Heroku
- jQuery frontend

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups

😊 About us 

ZentixSoft is a young British-Ukrainian full-cycle IT company. We are all about cool solutions and constant growth, and our main principle is People over processes. We are currently looking for a proactive Senior Ruby Engineer to join a global payments squad for a major American digital subscription service.
 

📝 About the project & conditions The project is a world-renowned e-book and audiobook platform with millions of users. You will work on a high-scale payments and billing ecosystem that handles authorization, settlements, and dunning processes globally. This is an outstaffing arrangement, with the potential to transition to an in-house model.
 

Format: Full-time, Long-term Outstaff. 
Schedule: US business-hours overlap (EST to PST). 
Focus: Ruby on Rails, Payment Service Providers (PSPs), AWS.
 

😉 What we expect from you 
💎 5+ years of backend experience with Ruby and Ruby on Rails for high-scale systems. 
💳 Payments domain expertise, including integrations with PSPs like Stripe, Braintree, or Adyen. 
☁️ 3+ years of hands-on experience with AWS (building, operating, and monitoring). 
🌍 Upper-Intermediate English or higher for seamless communication with the US team. 
🚀 Strong ownership and the ability to drive complex features from design to production.
 

🌟 Would be a big plus 
📊 Experience with Databricks for analytics or observability. 🤖 Hands-on use of AI productivity tools (Cursor, ChatGPT, or Copilot).
 

✨ What awaits you at ZentixSoft 
📈 Professional Growth. We create an individual development plan for your career path. 
💵 Salary Review. A structured policy to ensure your compensation grows with your skills. 
🎓 Knowledge Sharing. Access to general training, workshops, and internal sessions. 
🤝 Corporate Culture. Full access to our culture and team activities. 
🗣️ English. We fully cover classes with a teacher. 
⚖️ Work-Life Balance. We work without overtime and respect your personal time. 
💻 Tools. We cover the cost of all tools needed for work. 
🦾 Trust. Zero micromanagement — only freedom in making technical decisions.
 

📩 If you feel like this is about you - send your CV, and if it's a match, we will get in touch soon!

About us

Syndicode is a value-driven software development partner with a globally distributed team of engineers, designers, architects, and IT managers. We are united by the mission to provide our clients with software products and services that perform, look, and work as designed. 

We believe that our people and culture sustain Syndicode’s success. Our team is unified by shared principles like: Accountability, Involvement, Excellence, Visibility, Integrity, Innovation, Win-Win, and Flexibility. Syndicoders are professionals who pursue self-improvement through continual learning, are eager to introduce improvements to work processes, and can analyze a variety of sources to make sound, timely decisions.

If it sounds like you, apply to our jobs and become a new Syndicoder!

 
About the role

We are looking for a Senior Ruby on Rails Engineer who excels in backend development and problem-solving. The ideal candidate delivers scalable, high-quality solutions that drive value for stakeholders and has a proven track record in designing, building, and maintaining production-grade Ruby on Rails applications in complex domains.
 

What you’ll be doing

• Design, develop, and maintain scalable web applications using the latest Ruby on Rails versions and PostgreSQL
• Develop and implement new features
• Maintain the code quality at the highest level
• Develop and maintain automated test suites to ensure code quality and stability
• Implement API endpoints and integrate with a React application
• Integrate various 3rd-party services
• Integrate services with ML algorithms
• Create and maintain technical documentation
• Apply existing best practices in software development
• Provide the task estimation
• Participate in requirement elicitation and clarification with the product owner
• Optimize existing solutions, improve performance, refactor suboptimal code
• Make technical decisions and be able to justify them
• Troubleshoot and resolve production issues in a timely and efficient manner

What you’ll need

• 5+ years of working experience with Ruby on Rails
• Strong understanding of object-oriented programming and design patterns
• Proficiency in English (Upper-Intermediate level and above)
• Experience with Ruby from 3.1 version and above
• Strong problem-solving skills and the ability to work in a team environment
• Excellent communication skills
• Experience in writing unit/integration tests
• Ability to write testable code
• Strong knowledge of SQL
• Experience working with PostgreSQL
• Experience working with Redis
• Experience working with Elasticsearch

Nice to have   

• Experience working with React, Docker, and Sidekiq
• Experience using AWS, Kubernetes, GitHub actions, and Python
   

What you’ll get at Syndicode

• 15 days of vacation, 11 days off for holidays, and 20 sick leave days per year
• Fully remote job
• Internal tech meetups
• Continuous feedback within teams and departments
• Top-notch team 
• Ability to participate in decision-making and bring new ideas
• Self-management: opportunity to manage your time and plan your activities
• Dynamic fast-growing environment: we react and adapt quickly to the world and market changes.

You’ll be working as part of a cross-functional consultancy team, contributing to client-facing fintech projects. The role is hands-on and delivery-focused, with real ownership over features and technical decisions.

Requirements:
- 5+ years with Ruby on Rails 
- Designing and implementing RESTful APIs
- Solid understanding of Git, code reviews, and documentation
- Strong English (Upper-Intermediate+)

Work conditions:

- The ability to work remotely from anywhere in the world;
- Flexible work schedule, no micromanagement, no strict deadlines and free overtime work;
- Work in European and American products with a modern technology stack in different industries (Finance, Technology, Health, Construction, Media, etc.);
- Revision of wages every year or on an individual basis;
- Accounting support and full payment of taxes by the company;
- 100% compensation for remote English lessons;
- 15 paid leaves (PTO) and public holidays.

Required skills:

👉At least 5 years experience with Shopify

👉 At least  upper-Intermediate English level

⚡️ experience with Shopify Plus will be a HUGE plus.

Key Responsibilities:

👉 Developing new features and websites

👉 Supporting existing solutions

👉 Migrating from various e-commerce platforms

👉 Debugging and bug fixes for operating businesses

👉 Take part in the development of our own tools and frameworks

👉 Project deployment and basic testing

We offer:

✅ Become a part of rapidly growing Ecommerce Agency

✅ NO russian clients, NO russian colleagues!

✅ Remote work

✅ Paid time-off

✅ Flexible schedule

✅ Ability for a constant financial and professional growth

About Us

At Uitop, we design intuitive, scalable UI/UX for fast-growing B2B SaaS platforms across industries like logistics, finance, construction, and so on.

Job Summary
We are looking for a Ruby on Rails Developer to join our team. The role focuses on backend development, building and optimizing systems. The position also involves integrating AI features to enhance the platform.

What do you have

• At least 4 years of experience with Rails. 
• Proficient in Backend: you have at least three years of experience with Ruby and Ruby on Rails (most important), ideally 3-4 years.
• Frontend: Vanilla JavaScript, Hotwire with StimulusJS & Turbo a bit.
• Knowledge of Data Stores: Postgres and Redis; Sidekiq; S3. 
• Experience with Stimulus, TailwindCSS. 
• Experience with cloud environments, Terraform, networking and security concepts is a big plus. 
• Good English communication skills (B2 level), be ready to communicate effectively in English.

About project
The platform helps cities, developers, and urban planners automate and simplify the permit approval process, reducing errors and speeding up approvals with AI.

What we have

• Vacation - 18 working days per year, 10 Sick Days;
• 50% coverage of English language courses/any kind of courses;
• Working with complex SaaS systems for a long time;
• Performance & salary review constantly.
• Professional development support (books, online courses, conferences, certifications, Internal English classes);
• The opportunity to influence the project with your decisions;
• Financial compensation of coworking 100% (during blackouts);
• Flexible work schedule, remote.

Our focus is on a result-oriented person, ready to learn and implement new technologies. Maybe you are our match, let's talk!

Backend Developer (Ruby on Rails, APIs) - Mid-Level

We’re hiring a mid-level Backend Developer (Ruby on Rails) to join our on-site team in Kyiv. You’ll work on U.S.based products, building and scaling API-driven backend services, and collaborating closely with experienced engineers and product teams.

⚠️ Important

• On-site / Hybrid remote UKRAINE Only. 
• NO full-time remote

What You’ll Do

• Build and maintain RESTful APIs using Ruby on Rails
• Implement business logic, authentication, and third-party integrations
• Design and optimize relational database schemas and queries (PostgreSQL / MySQL)
• Collaborate with frontend, mobile, and product teams
• Write clean, maintainable, well-tested code following Rails best practices
• Create and maintain unit and integration tests
• Work with CI/CD pipelines and automated testing
• Participate in code reviews and iterative delivery

What We’re Looking For

• 3+ years of commercial experience with Ruby on Rails
• Hands-on experience building API-first applications
• Solid understanding of REST, JSON, JWT authentication
• Strong knowledge of ActiveRecord and relational databases (Postgres or MySQL)
• Experience with RSpec (unit, request, integration tests)
• Comfortable with Git workflows and Agile teams
• Practical experience using Postman, Swagger, or similar API tools
• Familiarity with background jobs (Sidekiq / ActiveJob)
• Pragmatic mindset — focus on shipping value, not over-engineering
• Willingness to learn and improve with team support

Nice to Have

• Experience with service-oriented architectures or microservices
• Exposure to API performance optimization and caching
• Familiarity with Docker (Kubernetes is a plus)
• Interest in or basic exposure to Go / Golang

What You’ll Get

• On-site Kyiv team with strong engineering culture
• Free on-site parking
• Daily lunches, snacks, drinks
• Performance-based bonuses
• Work on real, high-impact U.S. products
• Clear growth path as the product and team scale

We are looking for an experienced Ruby on Rails Engineer to join a product-driven team working on scalable web applications with a strong focus on performance, clean architecture, and business impact. The role involves building and maintaining backend services, integrating third-party systems, and collaborating closely with frontend and product teams.

Details

• Location: Fully Remote
• Employment Type: Full-time
• Start Date: ASAP
• Language Requirements: English – Upper-Intermediate or higher
• Time Zone Overlap: At least 2–3 hours with CET / US time zones

Key Responsibilities

• Develop, maintain, and scale backend services using Ruby on Rails
• Design and implement RESTful APIs and backend business logic
• Work with relational databases, ensuring performance and data integrity
• Integrate third-party services (payments, marketplaces, external APIs)
• Collaborate with frontend developers, product managers, and QA
• Write clean, maintainable, and well-tested code
• Participate in code reviews and architectural discussions

Requirements

• 4+ years of commercial experience with Ruby on Rails
• Strong understanding of MVC architecture and Rails ecosystem
• Experience with PostgreSQL / MySQL
• Solid knowledge of REST APIs and background jobs (Sidekiq or similar)
• Familiarity with Git and modern development workflows
• Experience working in Agile/Scrum environments
• Ability to work independently in a remote setup

Nice to Have

• Experience with Hotwire / Turbo / Stimulus
• Background in marketplace or e-commerce platforms
• Experience with cloud platforms (AWS / GCP)
• Knowledge of Docker and CI/CD pipelines
• Basic frontend skills (HTML, CSS, JavaScript)

Company Description

#1 talent intelligence platform and global leader in recruiting software which serves over 125,000 recruiters around the world.

Project Description

You will work across backend, frontend, browser extension, and mobile surfaces to deliver real, user-facing impact. You will integrate AI/ML-powered features into workflows, own complex integrations, and help evolve a product used at scale. This role is product-focused, integration-heavy, and well suited for engineers who enjoy owning features end-to-end.

Requirments

• At least 5 years of experience as a full-stack engineer working with Rails and JS.
• Comfort building and consuming APIs, including GraphQL.
• Experience with complex integrations such as communications, payments, or third-party services.
• Solid understanding of relational databases and search systems.
• Product mindset with attention to UX, performance, and reliability.
• Ability to work effectively in an AI-augmented development environment.
• Excellent communication, analytical, and problem-solving skills.
• Advanced level of English.

Responsibilities

• Design and implement full-stack features using Ruby on Rails, GraphQL, and TypeScript/React.
• Integrate ML outputs into UI, search, and automations, working closely with AI and data teams.
• Build and maintain APIs consumed by web, mobile, and extension clients.
• Own feature quality including UX guardrails, edge cases, and observability.
• Contribute to scalable architecture across multi-region Kubernetes environments.
• Participate in code reviews, technical discussions, and iterative product delivery.
• Daily use of modern AI coding tools such as Cursor and Claude.

Technical Stack

Backend

• Ruby on Rails with Sorbet typing
• GraphQL and JSON APIs
• Background jobs, authentication, billing with Stripe
• Integrations with Google, Twilio, Intercom, Mailgun
• Postgres (PostGIS, pgvector), Redis, Elasticsearch

Frontend

• TypeScript and React
• Redux, Router, Relay
• MUI, Storybook
• Data visualization with Plotly or Recharts
• Mapping with Leaflet

Mobile

• React Native app using the same API surface as the web product

Infrastructure and DevX

• Kubernetes at scale, multi-region and multi-provider
• Strong observability with logging, metrics, and tracing
• Docker and devcontainers
• Local Minio S3, Postgres, Elasticsearch bootstrap
• CI-friendly workflows with RSpec or Minitest, Rubocop, Sorbet, Prettier

Working conditions

• Mon — Fri, 8h/day, overlap with US (CST) at least 4 hours.

DRCT is an innovative IT product company, providing cutting-edge solutions in the aviation industry since 2016. Our team of 55 people is spread across Europe, working on impactful products in a fast-paced environment.

We're looking for a talented Back-End Developer with strong expertise in Ruby to help build and maintain our suite of products, including our website, API, and extensions. In this role, you'll focus on API integrations, particularly within the airline distribution domain, developing new features, optimizing integrations, and ensuring scalable solutions.
 

What you'll do:

1. API & Airline Integration
   • Integrate third-party APIs, particularly airline APIs, ensuring seamless communication.
   • Maintain and enhance existing integrations, working with REST and SOAP services.
   • Collaborate with airline partners to ensure accurate and efficient data handling.
   • Work with NDC-based airline integrations, including complex XML payloads and domain-specific business logic.
2. Feature Development
   • Design and implement new features from concept to deployment.
   • Write clean, maintainable, and well-documented code in plain Ruby and Rails.
   • Continuously identify and implement enhancements to improve product functionality and user experience.
3. Performance, Security & Testing
   • Work with asynchronous processes and background jobs for external integrations.
   • Implement RSpec tests to maintain high code quality and reliability.
   • Ensure adherence to performance, security, and scalability best practices.
   • Debug and resolve production issues in complex integrations, ensuring system stability and data consistency.
4. Collaboration and Communication
   • Demonstrate strong self-organization, efficiency, and a proactive approach to problem-solving and project execution.
   • Work closely with developers, product managers, and QA teams.
   • Effectively communicate technical concepts and project updates to stakeholders.
      

What you'll bring:

• 3+ years of experience with Ruby 3 and Rails 7+.
• Good knowledge of PostgreSQL, MongoDB, and Redis, including query optimization, indexing strategies, and scalability considerations.
• Experience working with REST and SOAP APIs, capable of delivering complex integrations end-to-end.
• Proficiency in RSpec testing, Git, Bash, and CI pipelines.
• Intermediate or higher English proficiency with strong communication skills.
• Ability to take ownership of features and integrations from idea to production.
   

Nice-to-Have Skills

• Experience with AWS, Datadog, and Elasticsearch.
• Experience with alternative Ruby frameworks such as Roda, Sinatra, or Hanami.
• Experience in the aviation industry.
   

What we offer:

• Enjoy a fully remote-friendly role with the option to work from our modern office in Kyiv whenever you prefer.
• Tax Support — we cooperate through a sole proprietor contract, providing tax coverage and accounting assistance.
• Work-life balance — take advantage of 24 calendar days of vacation, public holidays, and 7 sick days without the need for a medical certificate.
• Zero Bureaucracy — we focus on efficiency, results, and innovation instead of endless meetings and bureaucracy.
• Career Development & Growth — we're dedicated to your success with plenty of opportunities to develop and advance in your role.
• Learn from Experienced Engineers — enhance your skills through knowledge sharing with senior developers and tech experts
   

Ready for the Next Step? Apply now and take your career to new heights with us!

💎 We’re Hiring: Junior Ruby on Rails Developer

📍 Remote | 🕒 Full-time | 💼 Junior Level | 💰 $400–500

About the Role:
We’re looking for a motivated Junior Ruby on Rails Developer who wants to grow in IT and work on real projects in a supportive team. This is a fully remote, full-time position.

Requirements:
• 6+ months of experience with Ruby on Rails (basic level)
• Understanding of MVC architecture (Models, Views, Controllers)
• Knowledge of CRUD, routes, migrations, validations
• Basic database understanding
• Git basics
• Basic HTML/CSS
• Understanding of REST APIs
• Pet or educational projects (GitHub)
• English level A2+

We Value:
• Strong motivation to work in IT and grow as a developer
• Focus on results, not just tasks
• Responsibility and good communication
• Willingness to ask questions and accept code reviews
• Ability to work with tasks and meet deadlines
• Persistence and problem-solving mindset

What We Offer:
• $400–500 salary range
• Fully covered AI tools
• Free English-speaking club
• Friendly and collaborative team culture
• Room to learn and grow - mentorship from experienced Ruby developers
• 100% remote with flexible hours

📎 To Apply:
Send your CV and GitHub profile

We’re looking for someone who truly wants to build, learn, and grow 🚀

🔥 Знаходимось у пошуках Ruby on Rails Developer у продуктову eCommerce-компанію з історією понад 19 років на ринку, яка входить до великого технологічного холдингу з офісами в Казахстані та Азербайджані.

🔎🏢 Основна спеціалізація - великі онлайн-маркетплейси в категоріях Real Estate, Automotive, Job Portals та General Classifieds (універсальні платформи для приватних оголошень). За концепцією продукти нагадують OLX, Auto.ria та Work.ua. Загальна аудиторія - мільйони користувачів щодня. Команда інженерів - 30+ осіб. Технічна культура - інженерна, із високими вимогами до якості коду та глибини розуміння стеку.

⚙️ Технологічний стек проєктів:
• Backend: Ruby, RoR (завжди остання версія), Redis, Elasticsearch, PostgreSQL, GraphQL;
• Frontend: React, React Native, Next.js;
• Хмарні платформи: AWS, GCP.

📜 Основні завдання:
• Розробка та підтримка платіжних інтеграцій з локальними та міжнародними провайдерами;
• Оптимізація продуктивності та масштабування існуючих рішень;
• Розв’язання нетривіальних задач на стику бізнес-логіки й технологій;
• Робота в тісній зв’язці з архітекторами, продуктовими командами та фронтендом;
• Дотримання принципів інженерного мислення: відповідальність за результат, а не лише за реалізацію.

✅ Очікування від кандидата:
• Досвід розробки на Ruby on Rails - від 7 років;
• Розуміння принципів побудови високонавантажених систем;
• Участь у розробці складних проєктів, бажано - у проектуванні архітектурних рішень;
• Досвід роботи з GraphQL - буде перевагою;
• Англійська на рівні читання технічної документації.

🧪 Процес відбору:
• Технічне інтерв’ю з архітектором компанії (формат live-coding, до 2 годин);
• Зустріч з Engineering Director;
• Офер.

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