10/20/2026 updated

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Full-Stack Developer / Backend & AI Systems

Prague, Czech Republic
Only remote
Bachelor's degree in English and Applied Economics
Prague, Czech Republic
Only remote
Bachelor's degree in English and Applied Economics

Profile attachments

Simon_Smejkal_Full_Stack_Developer_CV.pdf

About me

Full-stack developer with 7+ years of experience building web applications, backend services, and AI-powered solutions. I mainly work with JavaScript, TypeScript, Node.js, React, and Python, with experience across both frontend and backend development.

JavaScriptApplication Programming Interfaces (APIs)LinuxDevOpsPython (Programming Language)PostgreSQLMongoDBNode.jsRabbitMQRedisTypeScriptChatbotsBackendBackend ProgrammingKubernetesFull Stack DevelopmentAzure AKSGraphQLFront End Software DevelopmentNestJSDocker
JavaScript & TypeScript Development
Extensive experience building production web applications using JavaScript and TypeScript, covering both frontend and backend development with frameworks such as React, Node.js, NestJS, and Express.

Backend & API Engineering
Strong background in designing and implementing backend services and APIs using Node.js, NestJS, Express, GraphQL, PostgreSQL, MongoDB, Redis, RabbitMQ, and Socket.IO for scalable, production-grade systems.

AI & Conversational Systems
Hands-on experience building conversational AI applications including chatbots, voicebots, and ChatGPT-powered assistants, as well as prototyping real-time AI virtual avatars combining speech, lip-sync, and video generation.

Cloud Infrastructure & DevOps
Practical experience with cloud platforms including Azure and AWS, container orchestration with Kubernetes and Docker, and deployment management for large-scale applications.

Python Development
Use of Python as part of a multi-language skill set for backend and AI-powered solution development.

Frontend Development
Proficiency in building user interfaces using React, HTML, and CSS as part of full-stack development projects.

Database Management
Experience with relational and non-relational databases including PostgreSQL and MongoDB, as well as caching and messaging solutions such as Redis and RabbitMQ.

AI Developer Tools
Familiarity with AI developer tools including Codex and Claude Code, applied in the context of conversational AI and virtual avatar development.

Experience

Professional experience5 - 10 years
Freelancer since2026

Languages

EnglishFluentItalianBasic knowledgeCzechNative speaker

Project history

Backend Developer

Born Digital
Built backend services and integrations for conversational AI applications including chatbot and voicebot solutions for clients such as Ceska sporitelna and T-Mobile. Contributed to a ChatGPT-powered banking assistant. Built a backend service for Scio's online exam proctoring platform and managed its Azure Kubernetes environment. Currently prototyping real-time AI virtual avatars combining speech, lip-sync, and video generation.

Full-stack Developer

Cinnamon
Developed an AI-enabled video platform designed to support fairer monetisation and compensation for content creators. Contributed to application deployments and AWS cloud infrastructure management.

JavaScript / Full-stack Developer

Rascasone
Built a browser-based audio player and spectrogram visualisation for a Skoda Auto project focused on identifying vehicle defects from engine sounds. Delivered frontend and backend functionality for client-facing web applications.

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