Senior Full-Stack (React+Node) Engineer

We’re looking for a Full-Stack Engineer to help design and build our platform from the ground up. This is a rare opportunity to shape the core architecture and to own a large portion of the tech stack. 

You’ll work on infrastructure that blends large-scale data systems with AI-native agents, taking full ownership of key engineering decisions and early team culture. This role offers high autonomy, direct impact, and long-term upside for someone who thrives in a fast-paced startup environment. 

You’ll write production code across backend and frontend, define interfaces between components, shape DevOps and data infrastructure, and turn abstract concepts into scalable systems. If you value speed, ownership, and tangible impact, this is the perfect fit. 

Experience / Skills required: 

Must have: 

• 5+ years as a Full Stack or Backend Engineer 
• Proven experience owning and delivering production systems end-to-end 
• Strong knowledge of modern frontend frameworks (React, Next.js) 
• Hands-on experience with full-stack app development using React (React + Tailwind), Node.js backend, and Kubernetes-based microservices (stateless/serverless) 
• Experience building APIs, databases, and cloud infrastructure at scale 
• Startup mindset – comfortable in early-stage, fast-moving environments 
• Previous experience as a founding engineer or in a 0–1 startup is a big plus 

Responsibilities: 

• Architect and build scalable APIs, backend services, and web application components 
• Contribute across the stack: data pipelines, agents, web UIs, and deployment systems 
• Design and implement internal tooling, testing frameworks, and CI/CD pipelines 
• Collaborate closely with product and design teams to prototype and ship new features 
• Help define engineering best practices, documentation, and early team processes 

We offer:  

• Competitive salary with the regular review 
• Vacation (up to 20 working days) 
• Paid sick leaves (10 working days) 
• National Holidays as paid time off 
• Flexible working schedule, remote format  
• Direct cooperation with the customer 
• Dynamic environment with low level of bureaucracy and great team spirit 
• Challenging projects in diverse business domains and a variety of tech stacks 
• Communication with Top/Senior level specialists to strengthen your hard skills 
• Online teambuildings