Jobs Ruby

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're looking for a Senior B Engineer who brings strong backend fundamentals and an AI-native engineering mindset to a mature, multi-tenant B2B hiring marketplace platform. This is a high-ownership role: you'll be the primary backend engineer on a lean team, responsible for performance, reliability, and feature development across a complex Rails and React codebase serving multiple enterprise clients.
We're not looking for someone who has "used Copilot a bit" - we want an engineer who works with agentic coding tools as part of their daily workflow and can critically evaluate what those tools produce.

What you’ll be doing

• - Own backend development and code quality across a multi-tenant Rails 7.2 application
• - Identify and resolve performance bottlenecks — N+1 queries, slow endpoints, Elasticsearch tuning, caching strategy
• - Develop multi-tenant features with strict data isolation across enterprise clients
• - Monitor application health (New Relic, Cloudflare, Rollbar) and lead incident resolution
• - Build and maintain API endpoints integrated with a React frontend
• - Work within a multi-agent development workflow - where AI agents autonomously handle requirements intake, code generation, and code review

What you’ll need

• - 5+ years with Ruby on Rails; experience with Rails 7.x
• - React: comfortable with frontend integration and component work
• - PostgreSQL: query optimisation, indexing, performance profiling
• - Caching strategies: HTTP caching, Redis, application-level caching
• - Technical leadership: architectural decisions, code reviews, mentoring
• - Experience working with AI coding agents: beyond autocomplete, including multi-agent frameworks and orchestration tools
• - Ability to critically review, guide, and override AI-generated code
• - Terminal-first workflow: comfortable with CLI tools and scripting
• - Systems thinking: understand how changes affect multiple tenants and services
• - English: Upper-Intermediate or above

Nice to have

• - Elasticsearch: query tuning and search optimisation
• - Redis
• - Kubernetes and containerisation
• - Multi-tenant system design experience
• - Python
• - Familiarity with context limits and token economy in LLM-assisted workflows
• - Multi-agent orchestration experience

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.

Responsibilities:

• Develop new product features
• Fix bugs as they arise
• Ensure Merge Requests improve test coverage by adding new unit tests
• Document explanation of developed features/fixes to Merge Requests and to corresponding tickets
• Documenting completed tickets for internal and external users
• Contribute high-quality code to the backend and frontend projects

Requirements:

• 6+ years developing software in a commercial environment
• 4+ years of Ruby Development
• Experience with Ruby frameworks and libraries
• Experience with frontend frameworks (React)
• Experience in building REST API, ideally using Grape
• Experience in building integrations with third-party APIs via REST, SOAP, XMLRPC, etc.
• Solid experience in building high-performance, reliable, and scalable services

Bonus Points:

• WMS / Logistics domain experience
• Experience with ERP systems (NetSuite, Acumatica, Dynamics F&O/BC/NAV etc.)
• Experience with Elasticsearch
• Experience with Go, AWS, Docker, GitLab CI
• Experience with PHP, Java
• Experience with .Net

Benefits We Offer:

• Stock options
• $100/month for Health & Wellness expenses
• $500/year for medical expenses
• 20 PTO days
• Top-level hardware of your choice, ownership will be passed to you

Ready to join our team? Apply now!

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

- Readiness to work in the ET (US) time zone

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;

- Health insurance program;

- Flexible working hours;

- Sponsored company educational program, corporate library;

- Comfortable and cozy office;

- Funny celebrations, team outings, and company events;

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

Sii Ukraine is a subsidiary of Sii Poland — the leader in IT, engineering, and consultancy services with over 7500 IT experts in Poland and more than 250 prestigious customers. We are looking for ambitious and top-quality professionals to join our project teams.

As a Senior Ruby on Rails Developer, you will join the team contributing directly to a large‑scale Case Management system used by enterprise clients across banking and insurance sectors. This is an exciting opportunity to work on a high‑impact platform that demands exceptional performance, security, and reliability.

Your tasks:

• Analyzing and participating in review sessions – assessing development needs, reviewing architectural approaches, and taking part in requirement analysis, design discussions, and SCRUM meetings
• Creating and maintaining project documentation, validating technical solutions, and ensuring architectural consistency before deployment
• Designing, developing, and optimizing Ruby on Rails applications, including advanced data processing, performance tuning, workflow optimization, and configuration of key platform components
• Working with PostgreSQL (complex queries, schema design, performance tuning), Redis (caching and in‑memory strategies), and background job processing (e.g., Sidekiq)
• Building scalable features, advanced filtering mechanisms, and solutions handling large datasets and enterprise‑level workflows
• Ensuring compliance with internal development standards and identifying automation opportunities, including the use of AI‑augmented development tools (GitHub Copilot, ChatGPT, Claude)
• Supporting testing and deployment activities while collaborating closely with cross‑functional team members across Europe

Requirements:

• Minimum 8 years of experience working with Ruby and Ruby on Rails, with proven ability to design and maintain complex applications

• Strong experience with:

  1. PostgreSQL (advanced database design and performance optimization)
  2. Redis (caching strategies and in‑memory data management)
  3. Scheduled jobs and asynchronous processing (Sidekiq or similar)
  4. Advanced search/filtering for complex enterprise datasets

• Ability to handle complex architectural challenges and optimize high‑load platforms
• Demonstrated use of AI tools (GitHub Copilot, ChatGPT, Claude) in daily development workflow
• Methodical, analytical, and structured approach to problem‑solving
• Excellent communication skills in English
• Tax residence in Ukraine is required

Preferred Qualifications:

• Understanding of the SMTP protocol and email delivery pipelines
• Experience deploying or managing cloud infrastructure in Azure, AWS, or Private Cloud environments

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

We’re hiring a mid-level Backend Developer (Ruby on Rails) to join our on-site (preferred) 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

• Full-time On-site / Hybrid 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

• Agentic Development Understanding.
• 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  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’re building serious software, fast. If you love clean code, modern tools, and working with a high-performance team—read on.

About Consultport

Consultport is the platform that connects top companies with world-class consultants and digital experts. Backed by ex-BCGs founders, we’re scaling fast and building the tech that powers it all.

What you’ll do

• Ship high-quality features with speed and precision
• Work across a lean, modern stack (Rails 8+, Hotwire, Stimulus, Turbo, TailwindCSS)
• Scale with PostgreSQL, Redis, Elasticsearch, and deploy on Heroku
• Push continuous delivery in a Kanban-driven, result-oriented environment
• Collaborate remotely, meet in person a few times a year, and enjoy our Berlin HQ

What we’re looking for

• 7+ years of engineering experience
• Ruby expert, always curious about the latest versions
• Obsessed with building robust, high quality systems
• Great communicator in English (no Shakespeare required)
• Pragmatic: you care about results, not ceremonies

Why you’ll like it here

• Remote-first, with a killer Berlin office when you want it
• Work with a sharp, motivated team that gets things done
• Real impact: every line of code moves the product forward
• Competitive compensation

Our Vision & Products

🚀 EverAI — Building the Future of AI Companionship

One of the Top 15 Largest & Fastest-Growing AI Companies in the World

50 Million Users in 2 years — Help Us Reach 100M first, 500M next

At EverAI, we’re shaping what it means to connect with AI. With 50 million users and counting, we're not just building products — we're creating entirely new categories.

Our flagship product is the world’s largest AI companionship platform, redefining relationships for millions. It is governed by our proprietary moderation system, EverGuard — an internal AI designed to ensure everything we build is safe, ethical, and human-first.

And we’re only just getting started!

Our Team

We are an enthusiastic, passionate and hardworking team of ≈ 75 people. Our founding team has strong entrepreneurial experience building and scaling web products from 0 to IPO.

Alexis Soulopoulos [CEO]

• 10+ years in Tech Executive Leadership

• Co-Founder Mad Paws Holdings (from 0 to IPO)

• Forbes 30 under 30 + Deloitte TechFast50 ’22 & ‘23

Michael Monin [Co-founder & CTO]

• 10+ years as CTO / COO (web2/web3), 1+ year in AI/LLM

• Serial-entrepreneur: MTK Digital (exited / 0->$20m revenue) and Zipchat (AI Chatbot for E-commerce brands)

Thomas Lacroix [Co-founder & CMO]

• 8+ years in Customer Acquisition & E-commerce Growth

• Serial-entrepreneur: Curatible (sold to Blackstone) and MTK Digital (exited / 0->$20m revenue)

Maruša Fasano [CFO/Legal]

• 25+ years in Finance, Strategy, M&A

• Ex-CFO/M&A at Curatible (exited to Blackstone)

• Ex-President of the Board at SotremoSA (exited)

• Co-founder/CFO at SoftOne (exited)

Your Role

Our tech team is expanding rapidly to keep pace with the ambitious feature roadmap we've set out. We are therefore hiring experienced Senior Software Engineers, to help us build and scale our product. You’ll have the opportunity to help define our roadmap and find the best technical solutions to help our customers. You will also have time to run some experiments and bring new ideas to the table.

Reporting directly to our Tech Lead, you will be responsible for:

• Interacting with the Product Manager to review project specs
• Preparing integration plans, break-downs, and estimations
• Hands-on code implementation, PRs, code reviews, testing, etc.

You'll be working with Michael (co-founder and CTO) along with the product team and the engineering team (web developers, SRE, data scientists).

What you will be working with

• Ruby, Ruby on Ruby (latest)
• PostgreSQL, Redis
• Hotwire (Turbo & Stimulus)
• Tailwind CSS

Your Qualifications

Must-haves

💼 5+ years of experience:

• As a back-end or full-stack software engineer
• In tech scale-ups or any similarly agile and fast-paced environment
• On large-scale products where your code was used by thousands of monthly users

🗣 Strong communication & collaborative skills (perfectly fluent in English)

🧢 Ownership and commitment - we’re looking for owners, not renters

⚡️ Doer mindset - we are moving fast and we need people who can find the right balance between software craftsmanship and velocity

🫶🏻 User-centricity - you are proud of what you build and you share our obsession for amazing user experience

🍭 #NSFW - you are comfortable building products that are based on uncensored models and content

Bonus points

• Past experience and/or interest in data science and generative AI (NLP, ML, MLOps, etc.)
• Experience working with globally distributed teams

Why EverAI?

📈 Exponential Growth: From 50M users in 2 years, to 100M next — and 500M beyond

🚀 Track Record of Category-Creating Innovation: We consistently launch world-first AI applications — setting the pace, not following it

🌍 Global Impact: Top-tier user growth, real-world adoption, and cultural relevance

🧠 Proven Leadership: A senior team that’s launched, scaled, and exited & IPO’d multiple scale ups — now fully focused on reshaping AI companionship

👥 Elite Remote Team: 100% remote and built to win — world-class talent from Tier 1 tech companies, with a culture of ownership, velocity, and radical creativity

🛡️ Ethical Core: Our AI ecosystem is governed by EverGuard, our proprietary AI moderation technology, ensuring responsible development at scale

What We Offer

✍️ Contract Type: We prefer B2B, but we’re flexible, what matters is long-term commitment and impact
📍 Work From Anywhere: Fully remote. Choose the environment where you do your best work
🏝️ Paid Time Off: 4 weeks (20 working days) of PTO per year to recharge and reset
👨‍👩‍👧‍👦 Annual Gathering: A yearly in-person meetup to connect, brainstorm, and celebrate wins together
❤️‍🩹 Health & Wellness Support: Monthly allowance of 100 USD for health insurance expenses + unlimited 1:1 sessions with psychologists and lifestyle experts through OpenUp (also available for up to three family members)
🏢 Co-Working Space Budget: Work from a co-working space up to twice per month (35 EUR / 40 USD per visit) to stay inspired and connected
📚 Learning Budget: Dedicated funds to support your professional growth: courses, books, conferences, events, or certifications
💻 Equipment: Company laptop provided + monitor budget up to 250 USD for your workspace setup
⚡ AI Tools Access: Premium access to ChatGPT, Cursor, Hugging Face, and others, to power your ideas and workflows

🎯 Top Tier Talent Is Our Multiplier

We’re a fully remote group of A-players from Tier 1 tech, led by an exec team who’ve launched, scaled, and exited multiple companies. We move fast, and care deeply about what we build — and who we build it with.

We’re looking for exceptional talent ready to ship & distribute world-first AI products at scale, fast, and co-create with us this category-defining business.

If that’s you — reach out and apply!

Our Vision & Products

At EverAI, we’re shaping what it means to connect with AI. With 50 million users and counting, we're not just building products — we're creating entirely new categories.

Our flagship product is the world’s largest AI companionship platform, redefining relationships for millions. It is governed by our proprietary moderation system, EverGuard — an internal AI designed to ensure everything we build is safe, ethical, and human-first.

And we’re only just getting started!

Our Team

We are an enthusiastic, passionate and hardworking team of ≈ 75 people. Our founding team has strong entrepreneurial experience building and scaling web products from 0 to IPO.

Alexis Soulopoulos [CEO]

• 10+ years in Tech Executive Leadership

• Co-Founder Mad Paws Holdings (from 0 to IPO)

• Forbes 30 under 30 + Deloitte TechFast50 ’22 & ‘23

Michael Monin [Co-founder & CTO]

• 10+ years as CTO / COO (web2/web3), 1+ year in AI/LLM

• Serial-entrepreneur: MTK Digital (exited / 0->$20m revenue) and Zipchat (AI Chatbot for E-commerce brands)

Thomas Lacroix [Co-founder & CMO]

• 8+ years in Customer Acquisition & E-commerce Growth

• Serial-entrepreneur: Curatible (sold to Blackstone) and MTK Digital (exited / 0->$20m revenue)

Maruša Fasano [CFO/Legal]

• 25+ years in Finance, Strategy, M&A

• Ex-CFO/M&A at Curatible (exited to Blackstone)

• Ex-President of the Board at SotremoSA (exited)

• Co-founder/CFO at SoftOne (exited)

Your Role

Our tech team is expanding rapidly to keep pace with the ambitious feature roadmap we've set out. We are therefore hiring experienced Senior Software Engineers, to help us build and scale our product. You’ll have the opportunity to help define our roadmap and find the best technical solutions to help our customers. You will also have time to run some experiments and bring new ideas to the table.

Reporting directly to our Tech Lead, you will be responsible for:

• Interacting with the Product Manager to review project specs
• Preparing integration plans, break-downs, and estimations
• Hands-on code implementation, PRs, code reviews, testing, etc.

You'll be working with Michael (co-founder and CTO) along with the product team and the engineering team (web developers, SRE, data scientists).

What you will be working with

• Ruby, Ruby on Ruby (latest)
• PostgreSQL, Redis
• Hotwire (Turbo & Stimulus)
• Tailwind CSS

Your Qualifications

Must-haves

💼 5+ years of experience:

• As a back-end or full-stack software engineer
• In tech scale-ups or any similarly agile and fast-paced environment
• On large-scale products where your code was used by thousands of monthly users

🗣 Strong communication & collaborative skills (perfectly fluent in English)

🧢 Ownership and commitment - we’re looking for owners, not renters

⚡️ Doer mindset - we are moving fast and we need people who can find the right balance between software craftsmanship and velocity

🫶🏻 User-centricity - you are proud of what you build and you share our obsession for amazing user experience

🍭 #NSFW - you are comfortable building products that are based on uncensored models and content

Bonus points

• Past experience and/or interest in data science and generative AI (NLP, ML, MLOps, etc.)
• Experience working with globally distributed teams

Why EverAI?

📈 Exponential Growth: From 50M users in 2 years, to 100M next — and 500M beyond

🚀 Track Record of Category-Creating Innovation: We consistently launch world-first AI applications — setting the pace, not following it

🌍 Global Impact: Top-tier user growth, real-world adoption, and cultural relevance

🧠 Proven Leadership: A senior team that’s launched, scaled, and exited & IPO’d multiple scale ups — now fully focused on reshaping AI companionship

👥 Elite Remote Team: 100% remote and built to win — world-class talent from Tier 1 tech companies, with a culture of ownership, velocity, and radical creativity

🛡️ Ethical Core: Our AI ecosystem is governed by EverGuard, our proprietary AI moderation technology, ensuring responsible development at scale

What We Offer

✍️ Contract Type: We prefer B2B, but we’re flexible, what matters is long-term commitment and impact
📍 Work From Anywhere: Fully remote. Choose the environment where you do your best work
🏝️ Paid Time Off: 4 weeks (20 working days) of PTO per year to recharge and reset
👨‍👩‍👧‍👦 Annual Gathering: A yearly in-person meetup to connect, brainstorm, and celebrate wins together
❤️‍🩹 Health & Wellness Support: Monthly allowance of 100 USD for health insurance expenses + unlimited 1:1 sessions with psychologists and lifestyle experts through OpenUp (also available for up to three family members)
🏢 Co-Working Space Budget: Work from a co-working space up to twice per month (35 EUR / 40 USD per visit) to stay inspired and connected
📚 Learning Budget: Dedicated funds to support your professional growth: courses, books, conferences, events, or certifications
💻 Equipment: Company laptop provided + monitor budget up to 250 USD for your workspace setup
⚡ AI Tools Access: Premium access to ChatGPT, Cursor, Hugging Face, and others, to power your ideas and workflows

🎯 Top Tier Talent Is Our Multiplier

We’re a fully remote group of A-players from Tier 1 tech, led by an exec team who’ve launched, scaled, and exited multiple companies. We move fast, and care deeply about what we build — and who we build it with.

We’re looking for exceptional talent ready to ship & distribute world-first AI products at scale, fast, and co-create with us this category-defining business.

If that’s you — reach out and apply!

💡 External Referral Program

Know someone who could be a great fit for this role? You can refer them through the EverAI External Referral Program and earn a bonus of up to 2,500 USD if they’re hired. Submit a referral here.

Cropwise Operations is a global leader in digital agritech solutions, operating in over 50 countries and helping optimize business processes and improve the efficiency of agronomic decision-making.  

We are looking for a skilled Ruby on Rails Developer to join our team.

What we expect from a candidate:

- Preferably 3+ years of Ruby on Rails development experience.

- Strong knowledge of Rails.

- Experience with testing frameworks like RSpec and Capybara.

- Testing with RSpec/Capybara.

- Basic knowledge of ES6 + React.js.

- Experience with JavaScript.

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

- Knowledge of HTML/CSS.

What exactly will you need to work with:

- Backend on Ruby on Rails 7.0 (Ruby 3.2).

- PostgreSQL + PostGIS database (handling large geospatial datasets).

- Job processing with 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).

Hiring process:

- Intro call;

- Test Task;

- Final Interview;

- Offer.

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.

- Flexible work formats: remote, office or hybrid.

- Health and life insurance for employees and your family members.

- 32 working days of paid annual leave and sick leave.

About Cropwise Operations

Cropwise Operations is a SaaS platform for farmers, leveraging cutting-edge technologies such as computer vision, big data, and AI to deliver actionable insights and improve agricultural outcomes.

For seekers, cooperation with Cropwise Operations is an opportunity to be part of a best-in-class product used by hundreds of companies around the world, and to deal with complex technical tasks in the field of neural networks and machine learning with the need to constantly improve their knowledge and skills, to find and implement unique engineering and technical solutions.

How you’ll be impactful:
As a Back End Engineer, you will improve our codebase, and write new features. Become a part of a successful team and bring your own perspective, experience, and knowledge to the table.
 

What You’ll Be Doing:

Develop new features and automatic tests, make sure everything is optimized correctly from code and database view.
 

What You'll Need To Be Successful in:

• +3 Years Proven work experience as a Ruby on Rails developer
• Proven work experience in software development
• Experience in Integration with popular 3rd party APIs and services
• A firm grasp of object oriented analysis and design
• Passion for writing great, simple, clean, efficient code
• Good knowledge of relational databases and SQL
• Experience with AWS or Heroku.
• Git
• Good sense of humor!
   

Perks & Benefits:

• Friendly, talented, collaborative, and entrepreneurial team
• Work in the international company
• Generous holiday and PTO policies (17 days PTO, 5 sick days, 1 day for Birthday)
• Competitive compensation in USD
• Summer Fridays 
• Training and development opportunities and allowance
• Fun and inclusive digital, and in-person events
• Hybrid working model 2 days from the office in Uzhhorod, 3 days working from home

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 7 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.
   

Interview stages:

1. HR interview with EchoGlobal
2. Coding test (you are presented with a link to do a live-coding test)
3. Technical interview #1 
4. Technical interview #2

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

QIT Software is looking for a Software Engineer who thrives on solving complex technical challenges and improving product stability, performance and scalability. In a SaaS environment, you’ll work across our upstream and midstream product lines to ensure it’s running efficiently and reliably for our customers.

Requirements:

- Bachelor’s degree in computer science or engineering
- Strong computer science foundation in algorithms
- 3+ years of experience as a software engineer in a SaaS or cloud-based environment
- Experience working on enterprise web application development
- Experience with Ruby 
- Experience with relational databases, such as SQL Server
- Experience with JavaScript Libraries


Responsibilities:

- Diagnose and resolve production issues impacting uptime, stability, or performance.
- Profile and optimize code, database queries, and API interactions to improve response times and scalability.
- Collaborate with Product and QA teams to enhance reliability and maintainability of core systems.
- Develop clean, efficient, and well-documented code using modern software development practices.
- Participate in code reviews, architecture discussions, and performance tuning initiatives.
- Contribute to continuous improvement efforts across the full SDLC — from incident prevention to automated testing and deployment.

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 domains (Finance, Technology, Health, Construction, Media, AI, Blockchain, etc.);
- Revision of wages every year or on an individual basis;
- Accounting support;
- 100% compensation for remote English lessons;
- 15 paid leaves (PTO) and public holidays.

🔥 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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