Dan Serbanoiu
Verified Expert in Engineering
Django Developer
Zenson di Piave, Province of Treviso, Italy
Toptal member since August 12, 2026
Senior software engineer with 8+ years of experience building cloud-native platforms, enterprise systems, and AI-powered products. He specializes in Python, FastAPI, React, AWS, PostgreSQL, Docker, and applied AI, delivering scalable solutions across the full software lifecycle for startups, enterprises, and public-sector organizations.
Portfolio
Experience
- Django - 8 years
- TypeScript - 8 years
- PostgreSQL - 8 years
- FastAPI - 8 years
- Python - 8 years
- JavaScript - 8 years
- Python 3 - 8 years
- Machine Learning - 8 years
Preferred Environment
PostgreSQL, FastAPI, OpenAI APIs, Git, Visual Studio Code (VS Code), GitHub, Linux, Python, Docker, TypeScript, React
The most amazing...
...thing I've built is an AI-powered platform that analyzes public procurement and satellite data to identify high-value solar opportunities.
Work Experience
Software Developer & AI Engineer
Professional Freelancer
- Developed Python back-end services for a large-scale public administration platform, leading the migration of core components and the integration of GeoServer to improve scalability, maintainability, and system reliability.
- Designed and implemented a Retrieval-Augmented Generation (RAG) pipeline and LLM-powered semantic search for comparing professional profiles, improving candidate matching within an enterprise HR platform.
- Developed back-end services and AI workflows for a platform that automates MDR regulatory documentation for medical device certification.
- Developed an AI-powered platform for photovoltaic feasibility studies, including a Python-based RAG engine for indexing and searching public procurement data.
- Designed and developed an AI-powered sales prospecting platform using FastAPI, React, and AWS, integrating AI-driven lead generation and customer research.
Back-end Software Developer
Goldman Sachs
- Implemented new features to the margin calculator to comply with regulatory changes and management requirements.
- Delivered risk reports and analytics to clients, Risk Managers, and margin operations teams worldwide.
- Designed and maintained back-end services for data processing and reporting, ensuring accuracy and reliability.
AI/Machine Learning Engineer
&Facts
- Built a full-stack web application using TypeScript (Aurelia) and Python (Django).
- Implemented forecasting methods for non-stationary marketing data using the KRLS-T model.
- Implemented k-means clustering algorithms for product classification.
Full-stack Developer
Futura SI
- Implemented a File Manager module to help clients navigate and store their documents.
- Built a smart Scheduler to help clients schedule maintenance operations efficiently.
- Developed an engine to allow nontechnical users to easily query a relational database.
Software Developer
ItalianaSoftware
- Developed an API marketplace with microservices architecture for buying and selling APIs within a team of 6.
- Developed an API gateway for regulating and limiting API usage by customers.
- Oversaw documentation writing and software deployment cycles.
Experience
AI-powered Solar Feasibility & Opportunity Platform
Enterprise RAG & Semantic Search Platform
AI-Powered Medical Device Certification Platform
AI-Powered Sales Prospecting Platform
Italian Ministry Environmental Data Platform
Education
Master's Degree in Smart Telecom and Sensing Networks
Aston University - Birmingham
Bachelor's Degree in Computer Science
University of Padua - Padua
Skills
Libraries/APIs
React, Node.js, Stripe, REST APIs, OpenAI API, Vue 3
Tools
Claude Code, Spreadsheets, Seos, Expo, Claude, Zapier, GitLab, Jira, Git, GitHub, RabbitMQ, Canva, Wix
Languages
Python, CSS, HTML, SQL, JavaScript, C++, TypeScript, PHP, C#, Python 3, HTML5, Rust
Paradigms
API Architecture, Automation, App Development, Real-time Systems, Responsive Web Design (RWD), UI Design, UX Design, Testing
Industry Expertise
Web Design, Cybersecurity, Project Management, Marketing
Frameworks
React Native, Django, Aurelia, AngularJS, NestJS, Next.js, Ruby on Rails (RoR), Tailwind CSS
Platforms
Amazon Web Services (AWS), Shopify, Android, QlikView, Mobile, Google Cloud Platform (GCP), Web, WordPress, Webflow, Linux, Windows, Docker, Visual Studio Code (VS Code), iOS, Apache Kafka, Kubernetes, Calendly
Storage
Databases, Redis, Elasticsearch, SecDB, Sybase, MongoDB, PostgreSQL, MySQL
Other
FastAPI, Artificial Intelligence (AI), Large Language Models (LLMs), Software Engineering, Branding, Web App UX, Architecture, Back-end, Algorithms, Agentic AI, Development, Full-stack Development, Full-stack, Search Engines, Authentication, Authorization, OpenAI, API Design, API Testing, Data, AI Architecture, AI Engineering, Airtable, Subscriptions, Shipping, Inventory Management, Cursor AI, Supabase, Debugging, Troubleshooting, Elementor, APIs, Intuit QuickBooks, User Interface (UI), Lovable, Operating Systems, Technical Documentation, Data Analysis, Data Visualization, User Experience (UX), Fintech, Open Banking, SaaS, AI Voice Agents, Integration, Front-end, Serverless, Computer Vision, Embedded Systems, Hardware, Web Development, Fractional CTO, Marketplaces, Machine Learning, Data Engineering, OpenAI APIs, WiFi, CI/CD Pipelines, Meetings, Technical Project Management, Shopify Customizations, Shopify Design, AI Agents, API Integration, Device Firmware Updates (DFU), Firmware, MLM Software, Cyber Defense, Design, Amazon DocumentDB, Zustand
How to Work with Toptal
Toptal matches you directly with global industry experts from our network in hours—not weeks or months.
Share your needs
Choose your talent
Start your risk-free talent trial
Top talent is in high demand.
Start hiring