Jobs Ruby

Who We Are

PAR Retail, with its Open Commerce® product suite and patent pending Wallet Steering® System, empowers Convenience & Fuel Retailers to gain more share of wallet and customer lifetime value than possible with any other solution provider. PAR Retail’s unified Open Commerce product suite consists of: Activate for Intelligent 1:1 Loyalty, Transact for Contactless Commerce, and Experience for Cross-Channel Customer Experiences. PAR Retail’s solutions are supported by a set of subscription-based program management services and are contractually backed by its 1.5X Performance Guarantee.

Technology Stack:

Ruby, Ruby on Rails, Postgres, Redis, Sidekiq, GraphQl, RabbitMQ

Requirements:

- Practical experience building systems in Ruby on Rails

- At least 6 years industry experience or equivalent

- Experience building and maintaining backend APIs, including design, implementation, evolution, and maintenance

- Familiarity with TypeScript, or similar modern strongly-typed language

- Proficiency using a variety of database technologies, both relational and non-relational

- Strong understanding and familiarity with CI/CD pipelines and automated tests

- An ability to work in service-based architectures as well as well-factored Rails monolith applications

- Highly independent and able to effectively self-organize and prioritize work

- The ability to write clean code, and the discipline to write effective automated tests to deliver high-quality system improvements

- An ability to effectively break down larger bodies of work for delivery as a series of small, self-contained changes to the system

- Excellent spoken and written communication skills

- BS/MS degree in Computer Science, Engineering, or equivalent years of professional working experience

Bonus Points

- Experience with NodeJS and React

- Experience in the retail and/or fuel & convenience industries

- Experience working in distributed teams

- Experience with Nest.js and/or GraphQL

Responsibilities:

- Collaborate closely with other Engineers, design and implement new functionality based on product objectives and requirements.

- Work with the broader product engineering team to plan and coordinate feature and functionality improvements, as well as resolve bugs and execute technical enhancements, that cross-cut large parts of our platform.

- Work to continually learn, improve technology skills, expand knowledge of the our platform technologies, and gain increasing versatility across the breadth of our platform systems.

- Expand APIs and business logic, and as needed write or revise customer-facing API documentation.

- Work with our infrastructure team to enable and enhance highly-available, performant, and well-instrumented backend applications and services that run in our customer environments at substantial scale.

- Support operations and infrastructure teams for issue resolution on relevant applications or services running in production environments.

PAR Retail Offers:

- Long-term employment;

- Competitive compensation with regular performance-based salary and career development reviews;

- Paid vacations and sick leaves;

- Flexible working hours;

- A unique and friendly environment where everyone can explore and learn new technologies.

We are looking for an experienced Senior Ruby + React Developer / Architect to join a product-focused engineering team building a large-scale B2D (business-to-developer) SaaS platform. You will help shape developer-facing products used worldwide, taking ownership of features from concept to production while influencing both technical and product decisions.

This is not a feature factory role—you'll work closely with the team to understand customer needs, challenge assumptions, and build solutions that deliver meaningful value to developers.
 

Core Competence:
 

• 5+ years of professional experience in software development, with strong expertise in Ruby on Rails and React + TypeScript.
• Proven experience designing, building, and maintaining scalable web applications in production environments.
• Strong frontend engineering skills with React, modern TypeScript, and component-based architecture.
• Solid backend development experience using Ruby on Rails, including API design and application architecture.
• Experience working with PostgreSQL and designing efficient, maintainable data models.
• Ability to take ownership of features throughout the entire development lifecycle—from discovery and design to implementation and release.
• Strong product mindset with the ability to challenge requirements and propose better technical and product solutions.
• Experience building products for developers or a strong understanding of developer experience (DX) principles.
• Comfortable working independently with minimal supervision in a fast-paced product environment.
• Excellent communication skills and the ability to collaborate effectively within a small cross-functional team.
• Hands-on experience using AI-powered development tools and coding assistants to improve engineering productivity.
• Strong understanding of software architecture, clean code principles, and modern engineering best practices.
   

Preferred Qualifications:
 

• Experience working on B2D (Business-to-Developer) or developer tooling products.
• Knowledge of Node.js and TypeScript backend services.
• Experience designing scalable frontend architectures and improving application performance.
• Strong UX and design intuition with an understanding of creating intuitive developer experiences.
• Experience influencing product direction and collaborating directly with product managers and technical leadership.
• Familiarity with Agile development methodologies and iterative product delivery.
• Previous experience in an architectural or technical leadership role.
   

What We Offer You:
 

• Product Ownership: Build features that directly impact developers using a globally adopted infrastructure platform.
• Architecture Influence: Contribute to technical direction and help shape the evolution of the product.
• Modern Technology Stack: Work with Ruby on Rails, React, TypeScript, PostgreSQL, and modern engineering practices.
• Collaborative Team: Join a small, experienced, and highly autonomous engineering team where your ideas matter.
• AI-Driven Development: Work in an environment that actively embraces AI coding assistants to improve productivity.
• Meaningful Impact: Help build infrastructure-level software powering real-time connectivity for developers around the world.
• Flexible Remote Environment: Work full-time with an international team focused on engineering excellence and product quality.

We are looking for a Full Stack Engineer to join our team at ORIL. This is an opportunity to work on a sophisticated PropTech / MarTech platform that is currently reshaping how the real estate industry handles data. If you enjoy a high-tempo environment, love working with AI, and want to see your code make a direct impact on business decisions, this is for you.
 

About the Project

Our client is a US-based innovator providing a centralized data platform for multi-family real estate. The product uses BI and AI analytics to help operators optimize marketing spend and operational efficiency.
 

Tech Stack: Ruby on Rails, React, PostgreSQL, AI/LLM integrations, AWS.
 

What are we looking for?

• 3+ years of experience in Full Stack development using Ruby on Rails and React;
• Proactive Delivery: You are comfortable with a fast development pace. You don’t wait for detailed instructions on every edge case—you think ahead and deliver ready-to-use features;
• Technical Independence: You can take a high-level requirement and turn it into a working feature (from DB schema to UI) without constant supervision;
• Problem-Solving: You focus on making things work efficiently and aren’t afraid to dig into complex data or scraping logic;
• Communication: Ability to discuss technical solutions directly with the team and the client;
• English level: Upper-Intermediate (B2).
   

Nice to have:

• Experience in PropTech or fast-growing SaaS startups;
• Experience with web scraping or complex data ingestion;
• Familiarity with AI/LLM integrations (OpenAI API, etc.).
   

What will you do?

• Develop and maintain features across the full stack (RoR + React);
• Build and optimize integrations with external property management and marketing tools;
• Work on the AI assistant’s backend logic and its UI representation;
• Help the team maintain a high tempo while keeping the code clean and scalable;
• Collaborate with the Lead dev and PM to refine the technical roadmap.
   

We offer:

• Competitive compensation;
• Flexibility to work from anywhere (fully remotely or in our office in Lviv);
• Accounting Support Services;
• Education budget + corporate education events/trainings;
• Compensation for certifications, fitness, or therapy sessions;
• A dynamic environment where your proactivity is recognized and rewarded.
   

Application Process:

1. Initial Screening: Call with Recruiter.
2. Technical Interview.
    

Ready to build the future of Real Estate AI? Apply now and let’s get to work!

FTE: Full-time (40 h per week)
Timeline: 3-6 months (tbd)
Start: ASAP
English: B2
Recruitment process: a tech check with our client, then an interview with the main client

The company
A well-established B2D (business-to-developer) SaaS platform operating at significant scale. Their product is infrastructure-level - real-time connectivity used by developers worldwide.

The team
~6–7 people: tech lead, PM, delivery manager, 3 web engineers + contractors. Small, tight-knit, opinionated. Standups Monday and Friday.

The role
One senior hire. This is a product-minded engineering role, not ticket execution. They’re shifting away from reactive delivery toward engineers who understand customers and drive outcomes.

Tech stack
React + TypeScript (frontend), Ruby on Rails (backend), some Node/TS services, Postgres.

What they’re looking for

• Developer empathy - you build tools for developers, you get the frustrations firsthand
• Product thinking - question requirements, propose what should be built
• Ownership - concept to shipped with minimal hand-holding
• Proactive communicator
• Comfortable with AI coding assistants (they use them actively)
• Design + UX intuition

Masons Group — міжнародна digital-команда з понад 7-річним досвідом у сфері performance-маркетингу та iGaming.

Спеціаліст з обліку та видачі SIM-карт (фарм-відділ)

Локація: Україна (віддалено)

Обов'язки:

• Видача та облік SIM-карт для співробітників фарм-відділу.
• Ведення бази/реєстру виданих SIM-карт (номер, дата видачі, відповідальна особа).
• Контроль повернення та списання SIM-карт.
• Оперативна комунікація зі співробітниками відділу з питань видачі протягом робочого дня.
• Взаємодія з керівником відділу щодо поточних потреб у SIM-картах.
• Своєчасне інформування про нестачу або поповнення запасу SIM-карт.

Вимоги:

• Відповідальність та уважність до деталей.
• Готовність бути на зв'язку протягом усього робочого дня (10:30–19:30).
• Досвід роботи з таблицями Excel або Google Sheets.
• Вміння працювати в режимі багатозадачності.

Графік роботи: 5/2, з 10:30 до 19:30.

About Us

At UITOP, we design and develop scalable B2B SaaS platforms across industries like logistics, finance, construction, and so on.

Job Summary
The role focuses on backend development, building and optimizing systems, and integrating AI features to enhance the platform. The position also requires familiarity with DevOps practices to support deployment, monitoring, and scalable operations.

What do you have

• At least 4 years of experience with Ruby on Rails, with 3–4 years of professional backend development.
• Strong backend skills in Ruby and Rails (most important).
• Frontend experience with Vanilla JavaScript, Hotwire, StimulusJS, Turbo, TailwindCSS.
• Knowledge of data stores: Postgres, Redis; background job processing with Sidekiq; object storage with S3.
• Experience with cloud environments (AWS, GCP, or Azure), Terraform, networking, and security concepts.
• DevOps skills: CI/CD pipeline setup and maintenance, automated deployments, containerization (Docker), orchestration (Kubernetes), monitoring and logging, and performance optimization for production workloads.
• Good English communication skills (B2 level), ready to collaborate 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

• Regular performance and salary reviews. 
• Working with complex large-scale SaaS projects, from 6 months.
• 18 working days of vacation and 10 sick days.
• Compensation 50% for professional development cources. 
• Free Internal English classes.
• Company equipment. We’ll provide a laptop after 6 months of work. 
• 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!

About Us

At UITOP, we design and develop scalable B2B SaaS platforms across industries like logistics, finance, construction, and so on.

Job Summary
We are looking for a Ruby on Rails Developer. The role focuses on backend development, and the team has been actively developing AI-powered features, making AI a core part of the product. You'll join a team of 5 developers, a PM, a designer, and 2 QA engineers.

What do you have

• At least 2 years of experience with Rails. 
• Proficient in Backend: you have at least two years of experience with Ruby and Ruby on Rails (most important), ideally 2-4 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 product helps municipalities and construction companies streamline the process of obtaining construction permits and approvals with AI. 

What we have

• Regular performance and salary reviews. 
• Working with complex large-scale SaaS projects, from 6 months.
• 18 working days of vacation and 10 sick days.
• Compensation 50% for professional development cources. 
• Free Internal English classes.
• Company equipment. We’ll provide a laptop after 6 months of work. 
• 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!

We're looking for a Senior with 8+ years of experience with a strong knowledge of both Ruby on Rails and Typescript.

Senior Ruby developer ASAP
(Please, send candidates only with the relevant skills specified in the white label CVs!)

FTE: Full time (40 h per week)
Timeline: 3-6 months (tbd)
Start: ASAP
English: B2
Recruitment process: a tech check with us, then an interview with the client

Requirements:
A Full-Stack Craftsman: You are an expert in Ruby on Rails and TypeScript, capable of building everything from complex dashboards and billing UIs to sleek documentation platforms.

The "DevEx" Champion: You have a natural empathy for other developers. You’ll develop deep knowledge of our platform (Pub/Sub, Chat, LiveSync) and use the product yourself to gain a first-hand understanding of the developer experience.

Comfortable with Ambiguity: You thrive in high-level vagueness. You can take a feature from a loose concept to a shipped product with minimal hand-holding, identifying problems and proposing solutions independently rather than waiting for a roadmap.

Accountable & Reliable: You take pride in high-quality, well-tested code. You meet your delivery commitments, provide realistic estimates based on technical complexity, and communicate proactively if a timeline is ever at risk.

An Owner: You monitor what you build in production and take personal ownership of quality issues. You see a feature through its entire lifecycle, from the first line of code to the final metric.

Senior Ruby developer ASAP
(Please, send candidates only with the relevant skills specified in the white label CVs!)

We're looking for a Senior with 8+ years of experience with a strong knowledge of both Ruby on Rails and Typescript.

FTE: Full time (40 h per week)
Timeline: 3-6 months (tbd)
Start: ASAP
English: B2

Recruitment process: a tech check with us, then an interview with the client

Requirements:
A Full-Stack Craftsman: You are an expert in Ruby on Rails and TypeScript, capable of building everything from complex dashboards and billing UIs to sleek documentation platforms.

The "DevEx" Champion: You have a natural empathy for other developers. You’ll develop deep knowledge of our platform (Pub/Sub, Chat, LiveSync) and use the product yourself to gain a first-hand understanding of the developer experience.

Comfortable with Ambiguity: You thrive in high-level vagueness. You can take a feature from a loose concept to a shipped product with minimal hand-holding, identifying problems and proposing solutions independently rather than waiting for a roadmap.

Accountable & Reliable: You take pride in high-quality, well-tested code. You meet your delivery commitments, provide realistic estimates based on technical complexity, and communicate proactively if a timeline is ever at risk.

An Owner: You monitor what you build in production and take personal ownership of quality issues. You see a feature through its entire lifecycle, from the first line of code to the final metric.