Senior Full Stack Engineer - Remote

We are working with a high-growth AI company building a widely used consumer platform with millions of users globally.

This is a product-focused environment where engineering decisions have direct impact at scale. The team operates at pace, with a strong emphasis on ownership, performance, and continuous iteration. The Role - Remote - Europe (CET ±3

We are seeking Senior Backend focused Full Stack Engineers to join a fully remote, cross-functional team working on high-traffic, production-grade systems.

You will be responsible for building and scaling core backend services, contributing to product development, and collaborating closely with Product, Design, and AI teams. Key Responsibilities

• Design, build, and maintain scalable backend systems
• Work on high-traffic applications used by a global user base
• Contribute to architecture and performance optimisation
• Collaborate with cross-functional teams including Product, Design, and DevOps
• Take ownership of features from concept through to deployment

• 5+ years of backend engineering experience
• Strong experience working on scalable, production-level systems
• Background in high-traffic B2C or SaaS environments
• Comfortable working in a fast-paced, startup environment
• Strong communication skills and ability to work independently

Technical Environment

The primary stack is Ruby on Rails. However, we are open to candidates with strong experience in:

• Python (Django / FastAPI)
• Node.js
• Go
• Elixir

The focus is on strong backend engineering fundamentals rather than a specific language. Preferred Experience

• Experience scaling systems to large user bases
• Familiarity with monolithic architecture and performance optimisation
• Experience working in cross-functional teams
• Proactive approach with strong ownership and problem-solving ability
• Experience using AI tools (such as ChatGPT, Copilot) in development workflows

Important Information

This role involves working on a product that includes adult-oriented (NSFW) content, delivered in a professional and regulated environment.

Candidates must be fully comfortable working in this context as part of their day-to-day responsibilities. Not Suitable For

• Candidates with experience limited to small or internal systems
• Candidates from highly structured or heavily regulated environments who may struggle in a fast-paced setting
• Candidates who are not comfortable working with adult-oriented content