Senior Full Stack Engineer

About the role

ZeinCrew LLC is seeking a Senior Full Stack Engineer to join a fast‑paced, remote engineering team. You will design, develop, and ship production‑grade software that spans the frontend, backend, APIs, databases, and cloud infrastructure, with opportunities to embed AI‑powered features.

Key responsibilities

• Design, build, and ship scalable full‑stack applications using React, Next.js, TypeScript, Node.js, and Python.
• Create modern, responsive user interfaces with SSR, CSR, and SSG techniques while optimizing performance, SEO, and accessibility.
• Develop robust backend services and APIs (REST, GraphQL) and integrate communication patterns such as WebSockets, webhooks, and asynchronous messaging.
• Work with relational and NoSQL databases, caching layers, and distributed services.
• Integrate AI/LLM features like intelligent search, chat, or automation into production products.
• Collaborate with product managers, designers, and engineers to make architectural decisions and own features from design through deployment and ongoing improvement.
• Participate in code reviews, write technical documentation, maintain CI/CD pipelines, and mentor junior engineers.

Required profile

• 5+ years of professional software engineering experience delivering full‑stack applications.
• Strong proficiency in TypeScript/JavaScript, React, and modern frontend development.
• Solid backend experience with Node.js, Python, or comparable technologies.
• Experience designing and implementing RESTful or GraphQL APIs and using WebSockets, webhooks, or async messaging.

Required skills

• TypeScript
• JavaScript
• React
• Next.js
• Node.js
• Python
• REST
• GraphQL
• WebSockets
• Webhooks
• Asynchronous messaging
• Relational databases
• NoSQL databases
• Caching systems
• CI/CD pipelines