Senior Full Stack Developer

Marllm.io is an innovative marketing-tech startup based in London, building a platform that helps businesses acquire customers without traditional advertising or SEO methods. Led by Jolanta, an engineer-turned-founder from Lithuania, the company maintains a lean, experimental approach with a team of five plus advisors, preparing for their first VC round.

The role offers an exciting opportunity for a Senior Full Stack Developer to join as a potential future Lead Engineer. You'll work directly with technical founders to develop and implement user-focused features while maintaining high code quality. The position involves working with cutting-edge technologies including AI/LLM applications, cloud infrastructure, and modern web development frameworks.

Key responsibilities include architecting scalable solutions, developing both client and server-side applications, working with AI models, and managing cloud infrastructure. The role requires strong technical expertise with 6+ years of experience in the MERN stack, along with proficiency in TypeScript, AWS, and containerization technologies.

The company culture emphasizes practical solutions, rapid learning, and shared ownership. Working in a fully remote environment (with UK hours ±2), you'll have the flexibility of a possible four-day work week and 20 days of paid time off. The compensation ranges from $6,000 to $6,500 per month, with the opportunity to shape a fast-scaling product from the ground up.

This position is perfect for a senior developer who values autonomy, enjoys solving complex technical challenges, and wants to be part of a growing startup that's pushing the boundaries in marketing technology. The role offers significant growth potential, including the opportunity to transition into a lead engineering position as the company scales.