Senior Ruby on Rails Engineer

2 weeks ago

Belgrade, Central Serbia Grid Dynamics Full time

We're looking for a strong Ruby on Rails engineer to contribute to two high-impact features within a large-scale consumer product used by millions of users.

Primary Project

You'll work on a human–bot interaction flow powered by in-house AI models. The feature helps users craft higher-quality request notes using both text and imagery. This is an iOS-only experience and requires backend updates in Ruby on Rails along with GraphQL schema and service changes. You'll collaborate with a dedicated iOS engineer for the client-side integration. This space requires a self-starter who can make progress with limited engineering support.

Secondary Project

You'll support enhancements to a chat experience where users communicate directly with human experts for styling insights. This includes web-based tooling for experts and iOS UI for clients. Most work involves Rails and GraphQL, with occasional contributions to the web frontend. This project offers more collaboration and support but involves context switching between feature areas.

Responsibilities

  • Deliver backend and GraphQL updates for new and existing product features
  • Collaborate with designers and cross-functional engineers across iOS, web, and backend teams
  • Break down complex work into manageable tickets for yourself and others
  • Communicate effectively with technical and non-technical partners
  • Provide technical solutions and articulate tradeoffs clearly
  • Participate in git-based workflows, code reviews, and engineering best practices

Requirements

  • Extensive experience with Ruby on Rails, including scaling Rails applications with PostgreSQL
  • Strong experience with GraphQL (Apollo, schema design, API best practices)
  • Proficiency with Git, GitHub workflows, and pull request code review
  • Strong communication and collaboration skills
  • Strong analytical skills and ability to reason about technical tradeoffs
  • Ability to self-manage work and create clear, actionable engineering tickets

Nice to have

  • Experience with Kafka, Redis, or event-driven system communication
  • Understanding of resilient distributed systems
  • Experience with or similar full-stack JavaScript frameworks
  • Experience with feature flags or gated rollouts
  • Familiarity with Percy and browser testing in CI
  • Experience with Datadog or similar observability tools
  • Frontend experience: React, JavaScript, CSS, Styled Components
  • Experience with/willingness to learn TypeScript
  • Interest in backend-leaning full-stack work

We offer

  • Opportunity to work on bleeding-edge projects
  • Work with a highly motivated and dedicated team
  • Competitive salary
  • Flexible schedule
  • Benefits package - medical insurance, sports
  • Corporate social events
  • Professional development opportunities
  • Well-equipped office

About Us
Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services. Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation. A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI, supported by profound expertise and ongoing investment in data, analytics, cloud & DevOps, application modernization and customer experience. Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India.

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