{"id":3453623,"url":"https://alion.io/job/parretail-senior-ruby-engineer","title":"Senior Ruby Engineer","company":{"id":4623,"name":"PAR Technology","domain":"partech.com","url":"https://alion.io/company/par-technology","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":["Ukraine"],"countries":["UA"],"hiring_countries":["UA"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"GraphQL","optional":false},{"name":"Ruby","optional":false},{"name":"Ruby on Rails","optional":false},{"name":"TypeScript","optional":false},{"name":"JavaScript","optional":true},{"name":"Nest.JS","optional":true},{"name":"Node JS","optional":true},{"name":"PostgreSQL","optional":true},{"name":"RabbitMQ","optional":true},{"name":"React.js","optional":true},{"name":"Redis","optional":true},{"name":"Sidekiq","optional":true}],"status":"live","first_seen_at":"2026-10-28T17:19:28Z","employer_posted_date":null,"last_verified_at":"2026-10-28T17:19:28Z","board_verified":false,"closed_at":null,"days_open":4,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":4},"description":"Who We Are\n\nPAR 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.\n\nTechnology Stack:\n\nRuby, Ruby on Rails, Postgres, Redis, Sidekiq, GraphQl, RabbitMQ\n\nRequirements:\n\n- Practical experience building systems in Ruby on Rails\n\n- At least 6 years industry experience or equivalent\n\n- Experience building and maintaining backend APIs, including design, implementation, evolution, and maintenance\n\n- Familiarity with TypeScript, or similar modern strongly-typed language\n\n- Proficiency using a variety of database technologies, both relational and non-relational\n\n- Strong understanding and familiarity with CI/CD pipelines and automated tests\n\n- An ability to work in service-based architectures as well as well-factored Rails monolith applications\n\n- Highly independent and able to effectively self-organize and prioritize work\n\n- The ability to write clean code, and the discipline to write effective automated tests to deliver high-quality system improvements\n\n- An ability to effectively break down larger bodies of work for delivery as a series of small, self-contained changes to the system\n\n- Excellent spoken and written communication skills\n\n- BS/MS degree in Computer Science, Engineering, or equivalent years of professional working experience\n\nBonus Points\n\n- Experience with NodeJS and React\n\n- Experience in the retail and/or fuel & convenience industries\n\n- Experience working in distributed teams\n\n- Experience with Nest.js and/or GraphQL\n\nResponsibilities:\n\n- Collaborate closely with other Engineers, design and implement new functionality based on product objectives and requirements.\n\n- 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.\n\n- 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.\n\n- Expand APIs and business logic, and as needed write or revise customer-facing API documentation.\n\n- 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.\n\n- Support operations and infrastructure teams for issue resolution on relevant applications or services running in production environments.\n\nPAR Retail Offers:\n\n- Long-term employment;\n\n- Competitive compensation with regular performance-based salary and career development reviews;\n\n- Paid vacations and sick leaves;\n\n- Flexible working hours;\n\n- A unique and friendly environment where everyone can explore and learn new 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