CareerPlan

Senior Software Engineer (Ruby on Rails) (Full Remote - Europe)

SpainRemoteFull-time2026-07-02 → 2026-11-09

Core

Senior Software Engineer building and scaling the world's largest AI companionship platform using Ruby on Rails.

Role type

Senior Software Engineer (Ruby on Rails)

Builds

AI companionship platform features and infrastructure

Domain

AI / Generative AI / SaaS

Deliverable

product features

Required skills

Ruby, Ruby on Rails, PostgreSQL, Redis, Hotwire (Turbo & Stimulus), Tailwind CSS, API integration, code review, estimation

Preferred skills

Data science, generative AI (NLP, ML, MLOps), globally distributed team experience

Technologies

Ruby, Ruby on Rails, PostgreSQL, Redis, Hotwire, Tailwind CSS

Responsibilities

Interact with Product Managers to review specs, prepare integration plans and estimations, implement code, conduct PRs and code reviews, perform testing

Seniority

Senior, hands-on IC