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I am Lucian Balan, a Senior Full-Stack Engineer with over 10 years of experience building scalable, high-performance web applications and cloud-native solutions. I specialize in the MERN stack, Node.js, JavaScript, TypeScript, React, and modern AI/ML workflows. I thrive on solving complex problems, collaborating across teams, and delivering robust, maintainable systems. Recently I expanded into AI with LLM integration, RAG, AI-powered automation, semantic search, and intelligent workflows, and I enjoy mentoring and leading teams toward product-focused outcomes. I am passionate about designing robust architectures, driving collaboration, and delivering product-focused results. My recent work includes AI-powered analytics, predictive systems, and scalable microservices, and I enjoy sharing knowledge and lifting teams to meet ambitious goals.…I am Lucian Balan, a Senior Full-Stack Engineer with over 10 years of experience building scalable, high-performance web applications and cloud-native solutions. I specialize in the MERN stack, Node.js, JavaScript, TypeScript, React, and modern AI/ML workflows. I thrive on solving complex problems, collaborating across teams, and delivering robust, maintainable systems. Recently I expanded into AI with LLM integration, RAG, AI-powered automation, semantic search, and intelligent workflows, and I enjoy mentoring and leading teams toward product-focused outcomes. I am passionate about designing robust architectures, driving collaboration, and delivering product-focused results. My recent work includes AI-powered analytics, predictive systems, and scalable microservices, and I enjoy sharing knowledge and lifting teams to meet ambitious goals.

Lucian Balan

Full Stack Developer, Front-End Developer, Back-End Developer, +2

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I am Lucian Balan, a Senior Full-Stack Engineer with over 10 years of experience building scalable, high-performance web applications and cloud-native solutions. I specialize in the MERN stack, Node.js, JavaScript, TypeScript, React, and modern AI/ML workflows. I thrive on solving complex problems, collaborating across teams, and delivering robust, maintainable systems. Recently I expanded into AI with LLM integration, RAG, AI-powered automation, semantic search, and intelligent workflows, and I enjoy mentoring and leading teams toward product-focused outcomes. I am passionate about designing robust architectures, driving collaboration, and delivering product-focused results. My recent work includes AI-powered analytics, predictive systems, and scalable microservices, and I enjoy sharing knowledge and lifting teams to meet ambitious goals.…I am Lucian Balan, a Senior Full-Stack Engineer with over 10 years of experience building scalable, high-performance web applications and cloud-native solutions. I specialize in the MERN stack, Node.js, JavaScript, TypeScript, React, and modern AI/ML workflows. I thrive on solving complex problems, collaborating across teams, and delivering robust, maintainable systems. Recently I expanded into AI with LLM integration, RAG, AI-powered automation, semantic search, and intelligent workflows, and I enjoy mentoring and leading teams toward product-focused outcomes. I am passionate about designing robust architectures, driving collaboration, and delivering product-focused results. My recent work includes AI-powered analytics, predictive systems, and scalable microservices, and I enjoy sharing knowledge and lifting teams to meet ambitious goals.

Available to hire

I am Lucian Balan, a Senior Full-Stack Engineer with over 10 years of experience building scalable, high-performance web applications and cloud-native solutions. I specialize in the MERN stack, Node.js, JavaScript, TypeScript, React, and modern AI/ML workflows. I thrive on solving complex problems, collaborating across teams, and delivering robust, maintainable systems. Recently I expanded into AI with LLM integration, RAG, AI-powered automation, semantic search, and intelligent workflows, and I enjoy mentoring and leading teams toward product-focused outcomes.

I am passionate about designing robust architectures, driving collaboration, and delivering product-focused results. My recent work includes AI-powered analytics, predictive systems, and scalable microservices, and I enjoy sharing knowledge and lifting teams to meet ambitious goals.

Skills

Experience Level

Expert

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Language

Romanian, Moldavian, Moldovan

Fluent

English

Advanced

Work Experience

Senior Full Stack Engineer at Honda

March 2, 2022 - December 2, 2025

Led the migration of a legacy PHP/Laravel fleet-management platform to a modern stack (React.js, Express, Python FastAPI/Flask) on AWS, significantly improving performance, scalability, and maintainability. Drove offline-first data capture in React Native (SQLite) with background sync, implemented RBAC and SSO (JWT/OAuth) across Node.js, Python, and Ruby on Rails microservices, and designed a scalable geofence engine using AWS SQS/Lambda/S3/RDS/CloudFront and Kubernetes. Built Python microservices for data processing, analytics, and AI/ML workloads, deployed via Docker/Kubernetes. Maintained and extended Rails back-office tools and API surfaces, and established high-availability infrastructure (EC2, Docker, Kubernetes). Led internal AI platform initiatives and data analytics workflows, including vector ingestion and model evaluation, mentoring a team of six engineers.

Senior Full-Stack Engineer / AI Engineer

March 1, 2022 - March 1, 2026

Led end-to-end design and development of health-care analytics platforms; modernized AI-enabled workflows, integrated AI-driven analytics, and built real-time dashboards; implemented AI-powered analytics, ML pipelines, and real-time monitoring; migrated legacy endpoints to GraphQL and REST; built AI-assisted workflow features and robust security.

Full Stack Engineer at Groupama Asigurari

September 2, 2016 - February 2, 2022

Developed and secured RBAC and SSO authentication across Node.js, Python (FastAPI), and Ruby on Rails microservices, including policy middlewares and PostgreSQL row-level security. Centralized session and device policy management to improve security and EU-compliance, and implemented GDPR consent logging with step-up verification for sensitive transactions. Standardized Tailwind CSS + MUI design system and integrated accessibility checks (axe) into CI. Implemented Stripe/Adyen payments with resilient webhooks and financial reconciliation. Delivered Customer 360 dashboards via Power BI Embedded over PostgreSQL materialized views and MongoDB aggregations; built a customer service portal (React + Redux) with RBAC for refunds/returns and audit trails. Led front-end refactor to Tailwind CSS and a shared UI library; collaborated with underwriting, legal, design, QA to translate regulatory workflows into user-friendly experiences. Established CI/CD pipelines using AWS CodeBuild, Docker, and G

Senior Full Stack Developer

September 1, 2016 - February 1, 2022

Designed and developed highly scalable RESTful and GraphQL APIs using Express, NestJS, and Apollo Server; built production-grade microservice architecture with Node.js, TypeScript, Redis caching; created responsive UI components with React, Next.js, Redux; integrated AI-powered analytics, predictive systems using TensorFlow.js and Python ML services; optimized frontend performance and improved data access.

Software Developer at United Portfolio

March 2, 2011 - August 2, 2016

Delivered an e-commerce storefront front-end using React.js and early Next.js with SSR, including structured metadata (Schema.org), image optimization, and page-load speed improvements that boosted organic traffic. Implemented robust identity and consent management (JWT/OAuth) with GDPR logging and step-up verification for sensitive transactions; centralized session and device policy management to ensure security and EU regulation compliance. Standardized Tailwind CSS + MUI design system; added accessibility checks in CI. Integrated Stripe/Adyen payments with webhooks and double-entry ledger for reconciliation. Built Customer 360 dashboards in Power BI Embedded over curated PostgreSQL materialized views, syncing segments to HubSpot/Mailchimp for lifecycle campaigns. Created a customer service portal (React + Redux) with RBAC for refunds/returns and audit trails. Developed analytics pipelines for RFM segmentation, LTV, churn using PostgreSQL and MongoDB, exporting to Amazon S3 for downs

Senior Full Stack Developer at Groupama Asigurări

March 1, 2011 - August 1, 2016

Led the full life cycle design and development of a health-care analytics platform built with Node.js, React and TypeScript; designed and developed scalable RESTful and GraphQL APIs using Express, NestJS, and Apollo Server; improved data access and boosted frontend integration efficiency.