Back End Developer

Senior Backend Engineer (AI Product)🚀

CodeX Digital are currently supporting a fast-growing AI start-up in Stockholm, who are building an AI-powered consumer-grade app experience & they’re looking for a strong Backend Engineer to join the team🚀

This is an opportunity to work on a highly interactive platform where real-time data, AI models, and game-like logic come together to create engaging user experiences. You’ll join a small, high-impact team building systems that evolve quickly, ship often, and directly influence how the product feels and performs at scale⭐️

What You'll Do🔧

• Design, build and scale backend systems powering a real time, data driven product
• Develop APIs, connect LLMs, internal services & external platforms
• Help shape the architecture behind AI-native and agent driven experiences
• Collaborate closely with product, frontend and AI teams

What We're Looking For🌟

• Strong backend engineering experience
• Deeply comfortable with Node.js & TypeScript (Python is a plus)
• Experience integrating or building with foundational AI models
• Startup energy and likes shipping fast
• Builds AI side projects or experiments out of curiosity

What You'll Get In Return💥

• Competitive compensation + equity
• High-impact role shaping the future of an AI product from early stage
• Collaboration with top-tier engineers
• Clear growth opportunities as the company scales
• Hybrid - 3 days a week onsite (Central Stockholm)

Note:

We're looking for both Mid + Senior Engineers to join the team so please don't hesitate to apply if you meet the criteria and are not Senior!