Jobs

What we expect from a candidate:

- Preferably 3+ years of Ruby on Rails development experience

- Good knowledge of Rails

- Good knowledge and experience with relational databases

- Testing with RSpec/Capybara

- Basic knowledge of ES6 + React.js

- Experience with JS

- Standard Rails application deployment stack (Git, CI, Capistrano, *nix)

- HTML/CSS

What exactly will you need to work with:

- Backend on Ruby on Rails 7.0 (Ruby 3.2)

- PostgreSQL + PostGIS database (a lot of geodata)

- Resque + Redis

- Testing on RSpec + Capybara + CI

- Partially frontend on React.js (ES6, JSX)

What else can you work with?

- Algorithms for processing large amounts of geodata

- Reception and processing of binary data (Ruby eventmachine)

- Working with RabbitMQ

- AWS, Google Cloud, Kubernetes

- Visualization and work with geodata on the frontend (Mapbox GL JS)

The company offers:

- opportunity to be a part of a best-in-class product that is used by thousands of companies around the world;

- participation in complex technical tasks and challenges;

- environment where you need to seek and implement unique engineering and technical solutions;

- trainings and development programs.

About Trialize

At Trialize, we are revolutionizing the clinical trial industry with our state-of-the-art technology platform. We specialize in leveraging artificial intelligence and automation to streamline the clinical trial process, making it faster, more efficient, and more reliable. Our platform supports a comprehensive range of services, including data management, patient engagement, and analytics, tailored for pharmaceutical companies, biotech firms, and CROs.

Role Overview

We are seeking a highly skilled Senior Ruby Developer to join our innovative team. In this role, you will design, develop, and maintain robust backend services using Ruby on Rails. Your expertise in graph data structures, algorithms, and distributed systems will be crucial in building scalable and high-performance applications. You will work closely with other developers, data scientists, and engineers to deliver cutting-edge solutions that enhance our clinical trial platform's capabilities.

Key Responsibilities

• Backend Development: Design and implement scalable backend services using Ruby on Rails, focusing on performance and maintainability.
• Graph Data Structures: Develop and optimize complex graph algorithms and data structures for various applications, such as patient matching, data lineage, and network analysis.
• Distributed Systems: Architect and implement distributed systems that handle large-scale data processing, ensuring fault tolerance and high availability.
• Data Management: Work with large datasets, designing efficient data storage and retrieval mechanisms. Implement data processing pipelines for data integration and transformation.
• Collaboration: Collaborate with frontend developers, data scientists, and other stakeholders to design and implement new features.
• Quality Assurance: Ensure high code quality through test-driven development, code reviews, and continuous integration practices.
• Optimization and Scaling: Optimize system performance and scalability, addressing challenges related to high concurrency and distributed data processing.

Key Qualifications

• Extensive Experience: Strong proficiency in Ruby and Ruby on Rails, with a deep understanding of the language and its ecosystem.
• Graph Theory Expertise: Proven experience in designing and implementing graph data structures and algorithms. Familiarity with libraries like Neo4j or GraphQL.
• Distributed Systems: Experience with distributed system design, including concepts like CAP theorem, eventual consistency, and data partitioning.
• Database Skills: Proficiency with SQL (PostgreSQL) and NoSQL databases (e.g., Redis, MongoDB). Experience with data modeling and optimization.
• Cloud and DevOps: Experience with cloud platforms (AWS, Azure) and DevOps practices, including containerization (Docker) and orchestration (Kubernetes).
• Analytical Skills: Strong problem-solving abilities and the capability to analyze complex requirements and translate them into technical solutions.

Preferred Qualifications

• Experience with microservices architecture.
• Familiarity with healthcare data standards and regulatory compliance (e.g., GDPR, HIPAA).
• Knowledge of machine learning and data science concepts.

Why Join Us?

• Innovative Projects: Engage in transformative projects that leverage advanced technology to make a real impact in healthcare.
• Collaborative Team: Work with a talented and diverse team dedicated to innovation and excellence.
• Growth Opportunities: Access to continuous learning and career advancement in a fast-paced, dynamic environment.
• Flexible Work: Benefit from a remote-friendly work culture that promotes work-life balance.
• Competitive Compensation: Enjoy a competitive salary, comprehensive benefits, and potential equity participation.

How to Apply

If you are passionate about leveraging Ruby to build cutting-edge solutions and have a strong background in graphs and distributed systems, we encourage you to apply. Please submit your resume and a cover letter detailing your experience and why you're excited to join Trialize.

We are seeking a skilled and passionate Ruby Developer to join our team. The ideal candidate will have a strong background in Ruby development and a commitment to creating efficient, scalable, and maintainable code.

Responsibilities:

* Develop and maintain web applications using Ruby on Rails.

* Ensure the performance, quality, and responsiveness of applications.

* Identify and fix bottlenecks and bugs.

* Help maintain code quality, organization, and automation.

Qualifications:

* Proficient in Ruby, with a good knowledge of its ecosystems.

* Solid understanding of object-oriented programming.

* A knack for writing clean, readable Ruby code.

* Experience with RSpec.

* Experience with working third-party API through JSON, GraphQL, XML, and SOAP

* Experience with PostgreSQL.

* Knowledge of Docker for development and deployment.

* Familiarity with continuous integration.

* Understanding of front-end technologies, such as JavaScript, HTML5, and CSS3 (Vue.js knowledge is a plus).

Preferred Skills:

* Team-oriented: we value collaborative team players over lone heroes.

* Proactive and self-motivated.

* Curiosity and a keen interest in learning new technologies.

What We Offer:

* Competitive salary that is regularly reviewed based on your performance.

* Flexible working schedule to accommodate your lifestyle.

* 10 working days of paid vacation, with the option to take an additional 5 days at your expense.

* 5 sick days per quarter to ensure your health and wellbeing.

* A collaborative and inclusive working environment.

📍 Location: Vinnytsia, Ukraine (Office-based)
💼 Employment Type: Full-time

About Warmy.io

Warmy.io is an AI-powered email warm-up and deliverability platform helping businesses ensure their emails land in inboxes - not spam. Our solution is trusted by startups, agencies, and enterprises worldwide.

We're growing fast and looking for a Junior up to Middle Ruby on Rails Developer to join our tech team in Vinnytsia. If you're just starting your career or have limited experience but are eager to learn and grow - we’d love to hear from you.

What You’ll Do

• Work with our product and engineering team to develop and improve platform features
• Learn and grow under the mentorship of experienced developers
• Help build backend functionality using Ruby on Rails
• Participate in daily standups, planning, and code reviews
• Collaborate with designers and frontend developers
• Write clean, readable code

What We’re Looking For

• Knowledge of Ruby and/or Ruby on Rails
• Understanding of OOP principles and MVC architecture
• Familiarity with relational databases (e.g., PostgreSQL)
• Willingness to learn, grow, and work in a team
• Presence in our Vinnytsia office - this is an in-office role
• Upper-Intermediate level of English or higher (for reading docs, internal communication)

Nice to Have (But Not Required)

• Pet projects or GitHub contributions
• Basic knowledge of HTML, CSS, JavaScript
• Experience with version control (e.g., Git)
• Familiarity withSidekiq, RabbitMQ, Redis, ElasticSearch, DynamoDB and Cloud & Microservices.

What We Offer

• Full-time role in our friendly Vinnytsia office
• Experienced team ready to support and mentor you
• Competitive salary with growth potential
• 12 PTO days, 10 sick days, and recognition of public holidays
• Work on a real product used globally - not just test tasks and theory
• Opportunities to grow into a Middle-level developer and beyond

📩 Just getting started in development? This could be your launchpad.
Apply now and join the Warmy.io engineering team!

We'd like to highlight that, due to the project specifics and requirements, we are considering candidates only within the GMT+5/+7 time zone!


    Our candidate’s profile:

• You have a minimum 2+ years of experience in Ruby and RoR;
  (production deployed projects with CI/CD);
• At least a B2 level in English (Upper-Intermediate);
• Good knowledge of relational (MySQL, PostgreSQL) and non-relational (MongoDB, Redis) databases, database design, and optimization;
• Solid experience of integration with 3rd party systems and services (Oauth2, Graphql, RestAPI, JsonAPI);
• Experience with Docker and cloud technologies (GoogleCloud, AWS, Azure);
• Experience with at least one modern JavaScript framework (React/Vue).
  
  Will be a plus to have:
• Experience with Microservice Architecture.

    Responsibilities:

• Estimate and delegate new tasks during the sprint planning;
• Initialize and configure the project with the whole set of required tools and dependencies;
• Design and implement the project architecture according to the requirements;
• Set up CI/CD tools and processes, third-party APIs, services, and integrations.
   

     Hiring Process:

• Send your CV;
• Share with us your code samples;
• Take a short call in English with a Recruiter;
• Pass a technical interview (in English) and get positive feedback;

• Get an offer.

   

  We suggest:

• Fintech project domain with an experienced team;
• Support from the internal team, Project Managers, and HRs;
• Long-term full-time cooperation.
   

The Role

Location - Porto, Portugal

The Senior Software Engineer is the highest technical resource within the
engineering team, responsible for leading the development, maintenance, and quality assurance of Gruvi’s key platforms. This role ensures technical excellence across projects, provides support to internal stakeholders, and plays a critical role in mentoring junior developers to support the department's growth.

Key Responsibilities and Duties

Project Ownership & Development:

● Lead the ongoing development of Gruvi’s core platform, Houston
(campaign management and prediction platform), overseeing future
planning, development procedures, and deployment processes.

● Maintain and enhance supporting projects such as GMDB and CMS by
executing updates, bug fixes, and integrations.

Full-Stack Engineering Execution:

● Deliver both front-end (SvelteJS) and back-end (Ruby on Rails)
development tasks based on sprint priorities.
● Ensure high-quality software output through robust testing (RSpec and
other frameworks).
Technical Support & Internal Collaboration:
● Provide technical support for non-engineering teams (Sales, Ad Operations,
Key Accounts, Design) regarding platform functionality and issue
resolution.
● Collaborate closely with all internal teams to deliver solutions that meet
operational and client-facing needs.
Quality Assurance Leadership:
● Own QA processes across all projects, working collaboratively to maintain and enhance system quality.

Mentorship & Team Development

● Mentor junior engineers, providing guidance on best practices, coding
standards, and professional development.
● Play a key role in building a strong, collaborative engineering culture.

Experience, Knowledge, and Skills
As a successful candidate, you will possess a combination of both soft and hard skills to excel in this role:
● 5+ years of professional experience in software engineering.
● Strong expertise in Ruby on Rails (back-end) and SvelteJS (front-end);
experience with React or similar modern JavaScript frameworks
acceptable.
● Deep knowledge of PostgreSQL and REST API design.
● Experience with automated testing (RSpec or similar frameworks).
● Excellent problem-solving and initiative-taking skills.
● Highly adaptable with strong collaboration skills across technical and
non-technical teams.
● Strong communication skills in English, both written and verbal.

Skills

● Experience with design systems and responsive design principles.
● Background in mentoring or managing junior team members.
● Familiarity with Vite for front-end builds.
● Understanding of CI/CD pipelines and DevOps practices.

About Gruvi

Gruvi is a media and insights agency dedicated to helping exhibitors engage film audiences online to drive ticket sales from distributors’ marketing spend.
We partner with cinemas worldwide, including Nordisk Biograf (Norway &
Denmark), Palace Cinemas (Australia), MultiKino (Poland), Vox (Middle East), Alamo Drafthouse (USA), and Reel Cinemas (UK). Our distribution clients range from major studios like Disney and UIP to independent film distributors internationally. Driven by a passion for cinema, Gruvi’s mission is to connect unaware audiences with great films they might otherwise miss — helping guide them to discover what to watch and where to see it.

About the Role

You’ll be at the core of our product architecture, helping build, maintain, and scale backend services using Ruby on Rails. You’ll work closely with our front-end engineers, product team to deliver robust, well-tested features and infrastructure improvements.

Responsibilities

• Design, build, and maintain backend services and APIs
• Architect scalable systems with clear data models and security principles
• Collaborate with FE engineers on API design and integration
• Write clean, maintainable, and testable code with RSpec
• Participate in code reviews, technical planning, and performance optimization

• Take ownership of features from ideation to deployment

   

  Requirements

• 5+ years of professional back-end development experience
• Expert in Ruby on Rails and relational databases (especially PostgreSQL)
• Experience with background processing, caching, and application performance tuning
• Solid understanding of security best practices in web development

• Comfortable working in agile, cross-functional teams and remote environments
   

  Nice to Have

• Experience with building AI products
• Familiarity with cloud infrastructure (AWS, Docker, CI/CD)
• Background in sectors with high compliance or data sensitivity (e.g. legal, health, government)
  
   

Hello everyone 👋

At Intobi, we're a software and product development company passionate about driving innovation and progress.

We help our clients succeed by delivering custom-built tech solutions designed to meet their unique needs.

Our expertise lies in developing cutting-edge Web and Mobile applications.

We’re seeking a success-driven Ruby on Rails Developer for one of our clients.

Full-Time, Short-Term position.

Requirements:

— At least 3 years of professional experience developing software;

— Proficiency with Ruby / Ruby on Rails;

— Experience with test-driven/behavior-driven development, particularly RSpec;

— Proficiency with both document and relational database systems (particularly MySQL, PostgreSQL);

— Proven ability to write readable code and efficient, scalable software;

— English —  Intermediate.

What we offer:

— Competitive salary;

— Paid vacation and sick leaves;

— Paid day off (Ukrainian holidays);

— Ability to work from our cozy office;

— 8 hours a working day, 5 days a week;

— Career growth potential;

— Friendly team and corporate events.

Please send your CV here or via email.

Should the first stage be successfully completed, you’ll be invited to a personal interview.

Hello everyone 👋

At Intobi, we're a software and product development company passionate about driving innovation and progress.

We help our clients succeed by delivering custom-built tech solutions designed to meet their unique needs.

Our expertise lies in developing cutting-edge Web and Mobile applications.

We’re seeking a success-driven Ruby on Rails Developer for one of our clients.

Full-time, project work

Technical requirements:

— 3+ years of commercial experience with Ruby on Rails.

— PostgreSQL, SQL.

— JS, HTML, SCSS

— Upper-intermediate or higher English level (both written and spoken).

— Accurate code style and quality.

— Experience working in Agile teams.

— Understanding and following OOP, SOLID, DRY, KISS principles, and other best practices.

What we offer:

— Competitive salary.

— Paid vacation and sick leaves.

— Paid day off (Ukrainian holidays).

— Flexibility to work either from our cozy office or remotely.

— 8 hours a working day, 5 days a week.

— Career growth potential.

— Friendly team and corporate events.

Please send your CV here or via email.

Should the first stage be successfully completed, you’ll be invited to a personal interview.

Requirements:

At least 2-3 years experience programming in Ruby on Rails

Modern Ruby (3+), modern rails (7+)

Practical experience with RDBMS (preferably PostgreSQL)

Experience implementing APIs

Loves working in an Agile environment, Jira

Experience with source control tools — Git, Github

Experience with UNIX/Linux command line

Ability to solve problems using best practices and principles

Working closely with front-end developers

Will be a plus:

Third-party APIs integrations

TDD

DDD

Knowledge of server management (deployment, monitoring, optimizing, etc.)

Experience working in micro service architecture projects

Experience with Sidekiq

Experience with Elasticsearch

Knowledge of design patterns, basic algorithms and data structures

We offer:

Interesting project and challenging tasks

Professional & career growth

Vacation and sick leaves

Responsibilities:

Work closely together with business, design and other stakeholders of project

Write robust manageable code

Work in an agile team, participation in planning sprints, daily meetings, retrospectives, code reviews

Write unit and integration tests, bugs fixing and provide continuous integration

Use JIRA bug-tracking system, Time Tracker

Suggest ideas to improve work

Be a self-motivated and result oriented team player

About us:

Health24 is a medical information service for cloud storage, online processing and secure real-time sharing of medical information for healthcare workers and patients.

More details here — health24.ua

We’re looking for a motivated Full-Stack Engineer to join a cross-functional Squad. You'll work on user-facing features and services with support from senior engineers and team leads, contributing to a modern Rails-based system while growing your skills in architecture, performance, and full-stack development.

Key Responsibilities:

• Develop and maintain user-facing features using Ruby on Rails.
• Collaborate with designers, product managers, and senior engineers to deliver features from specification to deployment.
• Participate in technical planning, code reviews, and team discussions.
• Write maintainable, testable code and contribute to improving test coverage.
• Learn and follow team conventions for CI/CD, documentation, and Git workflows.
• Troubleshoot bugs, implement improvements, and gradually take on more responsibility for parts of the codebase.

• Take feedback constructively and grow technical and product understanding over time.

   

Requirements

• 3+ years of full-stack development experience with Ruby on Rails.
• Solid understanding of front-end fundamentals: JavaScript (ES6), HTML5, CSS3, Bootstrap.
• Experience with Git and working with code reviews and CI pipelines (e.g., GitHub Actions).
• Experience with relational databases such as MySQL.
• Exposure to Redis, Memcached, RSpec, and basic front-end testing (Jest or similar) is a plus.
• Familiarity with tools like Rubocop, Brakeman, Haml, and ViewComponent is helpful.
• Eager to learn, adapt, and grow in a product-focused environment.

• Bonus: Some familiarity with AI tools, experience implementing AI in products.

   

Benefits

• Compensation - Competitive salary and opportunities for career development (B2B)
• Healthcare - Comprehensive medical coverage by LuxMed
• Vacation - We support work/life balance and offer generous Annual leave and Public Holidays
• Wellbeing Resources - Faria encourages team members to lead healthy lifestyles and provides recurring monthly Health and Wellness benefits
• Learning - We encourage continued education, so we suggest ongoing professional development opportunities, and will help cover the cost of professional certifications
• Team - Friendly atmosphere, group activities, and corporate events
• Equipment - MacBook Pro or another laptop of your specification, peripherals, and displays included
• Office - Small but cozy office in Krakow for your convenience or remote work in Poland

Привіт, народе! 👋
 

Ми шукаємо Ruby on Rails розробника з комерційним досвідом від 2 років, який готовий долучитися до створення масштабних проєктів. Якщо ти вмієш писати чистий код, добре знаєш Ruby on Rails і любиш вирішувати складні задачі, наша команда чекає саме на тебе!
 

💻 Формат роботи: повністю віддалено.
 

Хто ми?

Codica — це IT-компанія, яка вже 10 років створює складні веб рішення (зокрема Marketplaces та SaaS) і мобільні застосунки з нуля. Наші продукти — це завжди якість, якою користуються тисячі людей щодня.
 

Що потрібно буде робити?

• Брати участь у всіх етапах життєвого циклу продукту: від планування до релізу.
• Розробляти новий функціонал, який відповідає потребам проєкту.
• Підтримувати та оптимізувати наявний функціонал для підвищення його ефективності.
• Інтегрувати зовнішні сервіси та працювати з API (створення та інтеграція).
• Долучатися до технічних обговорень і брати участь у прийнятті архітектурних рішень.
• Забезпечувати високий рівень якості коду через покриття тестами та Code Review.
   

Стек технологій проєкта:

• Back-End: Ruby 3.3+, Rails 7+.
• Бази даних: PostgreSQL, Redis.
• Front-End: Stimulus, Turbo, Alpinejs, Tailwind.
   

Що ми очікуємо від тебе?

• Досвід роботи з Ruby on Rails від 2 років.
• Знання архітектури Ruby on Rails моноліт.
• Розуміння основ клієнт-серверної архітектури.
• Досвід роботи з базами даних (PostgreSQL, Redis).
• Навички роботи з REST API.
• Знання принципів написання тестів (RSpec або подібні фреймворки).
• Англійська мова на рівні листування із замовниками - рівень Upper-Intermediate.
   

Що буде плюсом?

• Досвід роботи з AWS або іншими хмарними сервісами.
• Розуміння Docker і GitLab CI/CD.
   

Чому з нами цікаво?

• Вплив на реальні проєкти - твої рішення та код стануть частиною продуктів, якими користуються тисячі людей.
• Гнучкість і комфорт - 100% віддалена робота та зручний графік, що адаптується до твого ритму.
• Підтримка команди - дружнє та професійне середовище, де завжди можна отримати допомогу й пораду від колег.
• Різноманітність проєктів - ми працюємо з цікавими проєктами, і ти матимеш змогу перейти на новий, коли завершиш поточний.
   

📩 Пиши нам на email або присилай сюди.
 

Долучайся до нашої команди, де твої ідеї та зусилля справді мають значення! 🚀