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Senior software engineer (6+ years) building production web and mobile applications with React, Next.js and TypeScript. Strong in frontend architecture, reusable UI systems, enterprise workflows, authentication and API integration. Also works across Python/Django/FastAPI, AI/RAG, Docker and Microsoft Fabric, delivering end-to-end solutions independently as a freelancer and alongside enterprise teams.…Senior software engineer (6+ years) building production web and mobile applications with React, Next.js and TypeScript. Strong in frontend architecture, reusable UI systems, enterprise workflows, authentication and API integration. Also works across Python/Django/FastAPI, AI/RAG, Docker and Microsoft Fabric, delivering end-to-end solutions independently as a freelancer and alongside enterprise teams.

Panagiotis Chatzinikolaou

Web Developer, Software Engineer, Full Stack Developer, +2

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Senior software engineer (6+ years) building production web and mobile applications with React, Next.js and TypeScript. Strong in frontend architecture, reusable UI systems, enterprise workflows, authentication and API integration. Also works across Python/Django/FastAPI, AI/RAG, Docker and Microsoft Fabric, delivering end-to-end solutions independently as a freelancer and alongside enterprise teams.…Senior software engineer (6+ years) building production web and mobile applications with React, Next.js and TypeScript. Strong in frontend architecture, reusable UI systems, enterprise workflows, authentication and API integration. Also works across Python/Django/FastAPI, AI/RAG, Docker and Microsoft Fabric, delivering end-to-end solutions independently as a freelancer and alongside enterprise teams.

Available to hire

Senior software engineer (6+ years) building production web and mobile applications with React, Next.js and TypeScript. Strong in frontend architecture, reusable UI systems, enterprise workflows, authentication and API integration.

Also works across Python/Django/FastAPI, AI/RAG, Docker and Microsoft Fabric, delivering end-to-end solutions independently as a freelancer and alongside enterprise teams.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Greek, Modern

Fluent

English

Advanced

Work Experience

Senior Full-Stack / AI Engineer at Heuristic Data

November 1, 2024 - Present

Own full-stack architecture and delivery with Next.js (TypeScript) and Python (Django/FastAPI) for enterprise platforms. Build AI/RAG applications and Docker-based deployments; collaborate with Microsoft Fabric and FinOps initiatives. Selected work includes: CEPAL; OTE, Groupama & PMI RAG platforms; Viohalco Fabric pipelines; Gnomon Analysis frontend.

Full-Stack / Frontend Engineer (Freelance) at Independent

October 1, 2021 - Present

Deliver web and mobile products independently from frontend architecture and state management through production release. Build React/Redux/MUI investment platforms with data-heavy workflows and an end-to-end React Native mobile application. Handle freelance engagements asynchronously while working independently as well as alongside full-time engineering roles.

Senior Frontend Engineer at Unisystems

September 1, 2021 - October 1, 2024

Led frontend architecture, reusable component design and UI standards for large-scale enterprise applications. Built React/Next.js workflows using React Hook Form, Redux, Keycloak and Oracle SSO across backend, QA and business teams. Projects: National Criminal Registry; Army Equity Fund; Judicial Case Management System.

Frontend Engineer at PaperGo

March 1, 2021 - September 1, 2021

Delivered React Native features and frontend architecture for an AI-powered basketball analysis platform using React-Admin and MUI.

Full-Stack Engineer at Knowledge SA

December 1, 2018 - March 1, 2021

Built enterprise systems for Greek Chambers across frontend, backend and Oracle DB; delivered frontend architecture for e-Chamber.