Senior Full-Stack Software Engineer with 6+ years of experience building scalable, production-grade applications with a strong focus on TypeScript across the entire stack. Proven expertise in designing front-end, back-end, and cloud architectures using modern JavaScript/TypeScript ecosystems.
Experienced in startups, scale-ups, and high-growth environments, delivering high-quality products with strong attention to performance, maintainability, and developer experience.
I excel in full-stack architecture, AI & agentic systems design, and implementing practical solutions that blend machine learning into production applications.
React, Next.js, React Native, Flutter, Node.js, AWS, GCP, Docker, PostgreSQL, MongoDB, TensorFlow, PyTorch, Hugging Face
Self Employed
Remote
01/2025 – Present
Delivered end-to-end TypeScript-based full-stack solutions for startups and SMBs across e-commerce, wellness, retail, and social impact sectors
Fashion Lounge Shop — Led a full redesign and new front-end implementation using React, Next.js, and TypeScript, improving UX, performance, and long-term maintainability
InstaLeads — Built a Chrome extension to automate Instagram growth strategies, developed with TypeScript and Supabase, including automation workflows, data persistence, and user management
Indigo Balance — Designed and implemented internal tools and a mobile platform using a Flutter-based stack with Supabase as the backend, enabling a scalable wellness marketplace
Dono.lat — Built a full-stack platform for charities to create events and manage volunteers, focusing on clean API design and maintainable TypeScript services
ulu.lat — Engineered a TypeScript-driven platform to automate retail business processes, including AI-assisted agents, internal dashboards, automated logistics pipelines, and content creation and multi-platform content management agents
MapAds
Buenos Aires, Argentina
05/2024 – 01/2025
Co-founded and built a TypeScript-first, full-stack platform for location-based advertising and audio content delivery
Developed a React Native mobile application and three Next.js web applications within a shared monorepo architecture, enabling code reuse and consistent development practices
Designed and implemented scalable front-end and back-end systems supporting data-intensive recommendation workflows
Built pipelines for automatic audio generation and location-based advertisement recommendations
Implemented analytics to analyze traveler interactions and deliver personalized content
Contributed to securing 28 brand partnerships through effective AI-driven advertising solutions
Blue Saturn (Techstars '23)
Remote, Chicago, USA
09/2023 – 05/2024
Led full-stack development using TypeScript to build an AI-driven candidate-matching platform, including a Chrome extension integrated with ATS systems to streamline candidate ingestion and evaluation
Designed and implemented scalable front-end and back-end architectures capable of processing 1,000 resumes in ~2 minutes
Built robust APIs and system integrations for LLM-powered workflows, achieving 95% alignment with human evaluations
Emphasized code quality, performance, and developer experience in a fast-paced startup environment
Tonal
Remote
06/2022 – 08/2023
Re-architected complex internal management tools using TypeScript, significantly improving developer experience and code reliability
Reduced bug incidence by 35% within 3 months through improved typing, state management, and component architecture
Implemented advanced caching strategies, reducing application requests and load times to ~33% of original levels
SoFi
Buenos Aires, Argentina
01/2021 – 07/2022
Worked as a full-stack developer on the Proof of Concept and Demos team
Built interactive applications using React and Java (Spring) to showcase financial products and core banking capabilities
Delivered end-to-end solutions demonstrating business value for Transfers, Credits, Payments, and Core Banking systems
Sistematis S.A.
Buenos Aires, Argentina
01/2020 – 01/2021
Contributed across software development, system architecture, and UX/UI design
Built web applications with React and mobile applications with Flutter
Delivered high-performance user experiences while working across the full development lifecycle
Self Employed
Buenos Aires, Argentina
01/2019 – 01/2020
Created personal applications reaching 15,000+ users, helping teachers in 65+ countries track and manage online classes
Delivered creative, low-budget technical solutions for 16 small businesses, covering web development, automation, and lightweight system design
Published on Hugging Face: huggingface.co/OPear/videomae-large-finetuned-UCF-Crime
Fine-tuned VideoMAE Large for video classification and anomaly detection
Achieved 92.96% validation accuracy across 14 classes (normal and anomalous behaviors)
Technologies: PyTorch, Hugging Face Transformers, VideoMAE
Developed a tool used by 15,000+ teachers in 65+ countries to track and manage online classes.
Systems Engineering
2021 - present
Java Spring Backend Developer
Jan 2022
Credential ID: 621d1c323fdf95002537ff64
Metodologías ágiles
Jan 2021
Credential ID: 6171aa0e7dbad40058016825
Product Management
Jan 2021
Credential ID: 6168405574b5bb003cce77f7
GenAI Intensive Course
2024
Large Language Models (LLMs)
Embeddings & Vector Stores
Agents and Agentic Workflows
Operationalizing Generative AI on Vertex AI using MLOps
Solving Domain-Specific Problems Using LLMs
Author: Christopher Semtu
Deep Learning Specializations
2022
Neural Networks and Deep Learning (Credential ID: WESLTSURLZ7Z)
Improving Deep Neural Networks: Hyperparameter Tuning, Regularization and Optimization (Credential ID: PNV8JNY3U5VS)
Structuring Machine Learning Projects (Credential ID: XPMZADAWZ8TQ)
Convolutional Neural Networks (Credential ID: DNTRG-TVLU8EX)
Sequence Models (Credential ID: ZZDWBE4S3AEV)
"I had the pleasure of working with Paulo on building and improving several internal web tools at Tonal. He brought a deep knowledge of scalable web solutions and a proactive, self-driven approach to the project. Paulo's expertise significantly improved our systems' efficiency and performance. What stood out beyond his technical skills was his communication. Our team worked in 3 different time zones and Paulo ensured that everyone involved was always up-to-date with progress and changes, making the entire process smooth and collaborative. I highly recommend Paulo for any project requiring strategic thinking, web development skills, exceptional problem-solving abilities, and a strong commitment to quality!"
"Working with Paulo was a great experience. He taught me not only the fundamentals of clean, readable, and maintainable code but also the importance of proper documentation. His expertise in Git and version control made a significant impact on our workflow, ensuring seamless collaboration and code quality. Paulo's approachable and easygoing nature and his deep technical knowledge, makes him a valuable asset to any team. He is always willing to share his expertise and is an exceptional listener, understanding the needs of the project and his teammates."
"Paulo is a great web developer and teammate. He joined the team as a web developer and demonstrated his ability to learn quickly and has become a proficient frontend engineer as well. He has an incredible ability to troubleshoot complex issues and turn around quick fixes. At the same time, Paulo is always willing to change the codebase and processes for the better. I would trust Paulo with any important project and would work with him once again."
"Paulo has shown a remarkable commitment to all his responsibilities and has successfully fulfilled every task assigned to him. He has remarkable ability to solve complex problems and has consistently exceeded our expectations by going above and beyond to ensure that everything is carried out in the best possible manner. Your experience, skills, and positive attitude will be a valuable asset to any organization. I am certain that you will continue to achieve success and reach all your professional goals. I am grateful for your dedication and commitment."
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