Software Engineer – Ruby
Alignerr is a company that evaluates and improves AI-generated content through human feedback, helping to train AI systems for better quality, clarity, and accuracy.
Remote work (Canada). 10–40 hours/week. Flexible working hours. Hourly Contract / Task-based.
Job description on LinkedIn.

Senior Ruby on Rails Developer
Iris Software is an IT company that builds mission-critical solutions for banking, insurance, healthcare, and logistics.
Remote work (USA).
Job description on LinkedIn.

Senior Banking and Brokerage API Developer
wealthAPI is a fast-growing FinTech that provides core financial solutions for financial education and comparison platforms, enabling financial multipliers to monetize trust.
Languages: English (mandatory), German (to interpret bank accounting statements).
Remote or hybrid (Berlin, Germany). Flexible working hours.
Job description on LinkedIn.

Senior Ruby Developer (Ruby & Go)
TradeQuo Global is a fintech company specializing in innovative trading solutions and financial products, providing services to traders worldwide.
Remote work.
Job description on LinkedIn.

Senior Back End Engineer (Ruby on Rails & GO)
PrizePicks is a daily fantasy sports platform operating in North America, covering leagues like the NFL, NBA, and Esports.
Remote (USA) or on-site (Atlanta, GA).
Job description on LinkedIn.

Senior Backend Engineer – Ruby on Rails
Product Pulse is a company that provides expert product management services for startups.
Remote work (within ±4 hours of CET) or on-site (Barcelona, Spain).
Job description on LinkedIn.

Senior Ruby on Rails Engineer
Amba is a company that builds remote monitoring for care settings, with sensors and alerts that help prevent emergencies.
Remote work (USA, Eastern or Central time).
Job description on LinkedIn.

Senior Fullstack Engineer (Ruby On Rails/TypeScript/React)
Kake is a technology company building modern web applications for consumer products.
Remote work (Americas).
Job description.
More details in Fernanda Ferrari's post on LinkedIn.

Principal Software Development Engineer
GoCardless is a global bank payment company that helps businesses collect, manage, and send bank payments through Direct Debit, real-time payments, and open banking.
Tech stack: Ruby on Rails, Golang, Python, JavaScript, TypeScript, React, Postgres, BigQuery, Kubernetes, Elasticsearch, Prometheus, Google Cloud (GCP).
On-site (Lisbon, Portugal).
Job description.

Senior Fullstack Engineer – Chartering & Inbox
Kpler is a subscription-based data and analytics platform, providing intelligence tools for trade to help businesses trade smarter.
Tech stack: Ruby on Rails, Python, Node.js, TypeScript, Vue.js, React, Kafka, AWS, Kubernetes, MySQL, Elasticsearch, Redis.
Athens, Greece.
Job description on LinkedIn.

Full-Stack Product Engineer, Ruby on Rails
VREY is a startup in the solar energy sector, building the EnergyOS for multi-family buildings, enabling property owners to sell self-generated solar power directly to tenants.
On-site (Berlin, Germany).
Job description.

Senior Software Engineer (Ruby on Rails)
EverAI is an international technology platform specializing in creating interactive and conversational AI-powered systems for virtual communication, role-playing games, and emotional support.
Languages: English (fluent).
Remote work.
Job description.