Senior Ruby-on-Rails Engineer

TL;DR

Senior Ruby-on-Rails Engineer (Backend): Building and scaling backend services for a large-scale AI companionship platform with an accent on Ruby-on-Rails backend development and product scalability. Focus on designing technical solutions, collaborating with product and engineering teams, and delivering high-quality code in a fast-paced, agile environment.

Location: Remote, must be based in Poland

Company

hirify.global is a fast-growing AI startup building the world’s largest AI girlfriend/boyfriend platform with 30+ million users, governed by proprietary AI moderation technology ensuring safety and ethics.

What you will do

• Collaborate with Product Manager to review project specifications and prepare integration plans
• Implement hands-on coding, pull requests, code reviews, and testing
• Help define the product roadmap and technical solutions
• Run experiments and bring new ideas to improve the product
• Work closely with the CTO, product team, and engineering team including web developers, SRE, and data scientists

Requirements

• Must be based in Poland
• 5+ years experience as backend or full-stack engineer with recent Ruby-on-Rails expertise
• Experience in tech scale-ups or fast-paced agile environments
• Experience with large-scale products used by thousands of monthly users
• Fluent English (C2) required
• Strong communication, ownership, and user-centric mindset
• Comfortable working with NSFW content based on uncensored AI models

Nice to have

• Experience or interest in data science, generative AI, NLP, ML, MLOps
• Experience working with globally distributed teams

Culture & Benefits

• Fully remote work from anywhere with preference for Poland
• B2B contract preferred with flexibility
• 4 weeks paid time off per year
• Annual in-person meetup
• Health and wellness support including psychological sessions
• Co-working space budget and learning budget
• Company laptop and monitor budget
• Access to premium AI tools like ChatGPT, Cursor, Hugging Face

Hiring process

• Application and referral program available
• Interviews with technical and cultural fit evaluations