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I am a Front-End / Full-Stack Developer with over 7 years of professional experience spanning outsourcing, outstaffing, and product development. My career covers diverse roles across outsourcing, outstaffing, and product development, enabling me to adapt to various team dynamics and project scopes. I’ve worked in European (Germany and the UK) and US companies and collaborated with international teams to deliver high-quality software. I focus on building robust React-based applications and end-to-end solutions, using React.js, TypeScript, Next.js, Node.js, and Redux. I’ve contributed to energy storage and e-mobility projects, restructured legacy Django/Express backends, and built AI-powered pipelines for document processing and signatures. I enjoy close collaboration with teammates, rigorous testing, and delivering intuitive user experiences that empower clients.…I am a Front-End / Full-Stack Developer with over 7 years of professional experience spanning outsourcing, outstaffing, and product development. My career covers diverse roles across outsourcing, outstaffing, and product development, enabling me to adapt to various team dynamics and project scopes. I’ve worked in European (Germany and the UK) and US companies and collaborated with international teams to deliver high-quality software. I focus on building robust React-based applications and end-to-end solutions, using React.js, TypeScript, Next.js, Node.js, and Redux. I’ve contributed to energy storage and e-mobility projects, restructured legacy Django/Express backends, and built AI-powered pipelines for document processing and signatures. I enjoy close collaboration with teammates, rigorous testing, and delivering intuitive user experiences that empower clients.

Ernest Dzhevatov

Front-End Developer, Full Stack Developer, Back-End Developer, +3

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I am a Front-End / Full-Stack Developer with over 7 years of professional experience spanning outsourcing, outstaffing, and product development. My career covers diverse roles across outsourcing, outstaffing, and product development, enabling me to adapt to various team dynamics and project scopes. I’ve worked in European (Germany and the UK) and US companies and collaborated with international teams to deliver high-quality software. I focus on building robust React-based applications and end-to-end solutions, using React.js, TypeScript, Next.js, Node.js, and Redux. I’ve contributed to energy storage and e-mobility projects, restructured legacy Django/Express backends, and built AI-powered pipelines for document processing and signatures. I enjoy close collaboration with teammates, rigorous testing, and delivering intuitive user experiences that empower clients.…I am a Front-End / Full-Stack Developer with over 7 years of professional experience spanning outsourcing, outstaffing, and product development. My career covers diverse roles across outsourcing, outstaffing, and product development, enabling me to adapt to various team dynamics and project scopes. I’ve worked in European (Germany and the UK) and US companies and collaborated with international teams to deliver high-quality software. I focus on building robust React-based applications and end-to-end solutions, using React.js, TypeScript, Next.js, Node.js, and Redux. I’ve contributed to energy storage and e-mobility projects, restructured legacy Django/Express backends, and built AI-powered pipelines for document processing and signatures. I enjoy close collaboration with teammates, rigorous testing, and delivering intuitive user experiences that empower clients.

Available to hire

I am a Front-End / Full-Stack Developer with over 7 years of professional experience spanning outsourcing, outstaffing, and product development. My career covers diverse roles across outsourcing, outstaffing, and product development, enabling me to adapt to various team dynamics and project scopes. I’ve worked in European (Germany and the UK) and US companies and collaborated with international teams to deliver high-quality software.

I focus on building robust React-based applications and end-to-end solutions, using React.js, TypeScript, Next.js, Node.js, and Redux. I’ve contributed to energy storage and e-mobility projects, restructured legacy Django/Express backends, and built AI-powered pipelines for document processing and signatures. I enjoy close collaboration with teammates, rigorous testing, and delivering intuitive user experiences that empower clients.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Advanced

German

Beginner

Ukrainian

Fluent

Russian

Fluent

Work Experience

Senior Front-End / Full-Stack Developer at NineTwoThree AI Studio

July 1, 2025 - Present

Currently building AI-driven web and mobile solutions, developing backend services in Node.js and leveraging legacy Django, and creating OpenAI-powered pipelines for document analysis and insurance claims, with DocuSign integrations and end-to-end pipelines. I contribute to front-end features using React and TypeScript, and help shape scalable architectures and development workflows.

Senior Front-End Developer at NineTwoThree AI Studio

July 1, 2025 - Present

Developed complex React applications in a microservices architecture; created npm package; implemented unit and e2e tests; supported legacy apps; led frontend for E3/DC project with 50+ developers; technologies included TypeScript, React, Apollo GraphQL, Storybook, Material-UI, Jest, Cypress, NX, Nest.js; focused on accelerating frontend delivery and AI-driven pipelines.

Front-End Developer at HagerEnergy GmbH

January 15, 2024 - June 30, 2025

Contributed to the development of various energy storage systems, focusing on enhancing user interfaces and improving system reliability. Responsibilities included coding, debugging, and collaborating with other departments to meet project goals.

Senior Front-End / Full-Stack Developer at E3/DC (subsidiary of Hager Group)

January 1, 2024 - July 1, 2025

Developed and maintained frontend and backend features for energy storage and e-mobility solutions; implemented complex React applications and integrated Node.js, Django (legacy) backend; focused on delivering intuitive tools to control energy resources, improving energy efficiency and autonomy; participated in architecture discussions, refactoring, and implementing AI-powered pipelines for document signatures, insurance claims, and loan data processing.

Senior Front-End Developer at E3/DC GmbH

January 1, 2024 - July 1, 2025

As a Senior Front-End Developer at E3/DC GmbH (a subsidiary of the Hager Group), I developed and improved front-end features for energy storage solutions, collaborating with product owners to design intuitive interfaces and optimize performance. I worked with React and TypeScript to deliver efficient UI for energy management and home power systems, and contributed to architecture discussions and cross-team initiatives.

Senior Front-End Developer at Open Geeks Lab

November 1, 2020 - December 1, 2023

Led front-end development for client projects; built backend integrations with Node.js and Django (legacy); rewrote legacy Django routes to modern Node.js; created AI-powered pipelines; implemented features using React.js, TypeScript, Redux, and Material UI; collaborated with a 30-person team across disciplines.

Senior Front-End Developer at Open GeeksLab

November 1, 2020 - December 31, 2023

In a senior Front-End role at Open GeeksLab, I led front-end development for outsourcing projects, built React-based solutions (React.js, Next.js, TypeScript, Redux), contributed to architecture decisions, implemented testing with Jest and React Testing Library, and collaborated with testers and designers. I worked on high-impact features for clients such as InvoTra, migrated legacy components, and helped establish robust front-end practices.

Senior Front-End / Full-Stack Developer at Open Geeks Lab

November 1, 2020 - December 31, 2023

Led frontend development for multiple AI-driven web and mobile solutions; migrated legacy Django routes to modern Node.js services; built backend services with Node.js and Koa; integrated DocuSign for digital signatures; created OpenAI-powered pipelines for document analysis, insurance claims assessments, and loan data processing; supported legacy code and participated in architecture discussions within Scrum teams of 50+ developers.

Junior Front-End Developer at Open GeeksLab

September 1, 2018 - October 1, 2020

Started as a junior Front-End Developer at Open GeeksLab, a mid-sized Ukrainian outsourcing company. My initial responsibilities focused on fixing minor bugs, implementing small UI improvements, and contributing to early feature work under guidance. I collaborated with designers, testers, and other developers to deliver stable user interfaces, gradually taking on more complex tasks and gaining experience that helped me grow toward mid-level development.