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Rodolfo Wilhelmy
Verified Expert in Engineering
Software Developer
Ensenada, Mexico
Toptal member since November 5, 2021
Bio
Rodolfo is a senior software engineer with more than 10 years of experience in engineering and management roles across different public, private, and nonprofit industries. He specializes in designing and building solutions across the software stack with solid software engineering principles, including full-stack systems, data pipelines, and novel algorithms using discrete optimization techniques. In the past, Rodolfo also held several roles in data engineering and analysis.
Portfolio
Studio Energy, Inc
D3.js, React, Next.js, Tailwind CSS, TypeScript, Prisma, Supabase, PostgreSQL...
ToothReferral.com LLC
Full-stack Development, Web Development, Agile Software Development...
Ruley
TypeScript, Vector Databases, Firebase, Claude, OpenAI...
Experience
- Full-stack - 10 years
- Node.js - 10 years
- React - 8 years
- Python - 6 years
- Machine Learning - 5 years
- Serverless - 5 years
- Amazon Web Services (AWS) - 5 years
- Discrete Optimization - 4 years
Work Experience
Next.js and D3.js Developer
2025 - 2026
Studio Energy, Inc
- Led full-stack development of an energy research portal (Next.js, Prisma, Supabase, Clerk), taking it from a barebones codebase to a production platform with interactive visualizations, publications CMS, and role-gated admin tools.
- Designed a GeoJSON map layer sync pipeline, ingest engine, CLI, cron jobs, Supabase Storage, powering an interactive Mapbox map with clustering and proportional bubble layers.
- Delivered a custom Chart Library with resizable dashboards, saved user charts, Playwright thumbnail generation, and an editor/reviewer publication workflow.
- Co-developed Easel, an internal data exploration and chart builder with streaming queries, memory-safe row caps, D3 choropleth maps, and persistent chart configurations.
- Established CI/CD and E2E testing, Playwright suites triggered post-deploy on Vercel, Clerk-authenticated smoke tests, and PR code quality gates.
- Shipped 20+ production chart types with high-resolution export, shared typography config, and a reusable download pipeline used across dashboard, library, and board deck views.
- Built a publications CMS with Prisma migrations, article ingestion from scraped clusters, revision history, and server-rendered SEO metadata.
Technologies: D3.js, React, Next.js, Tailwind CSS, TypeScript, Prisma, Supabase, PostgreSQL, Clerk, Mapbox GL, Mantine, Playwright, Vitest, Vercel, CI/CD Pipelines, GitHub Actions
Full-stack Engineer
2025 - 2026
ToothReferral.com LLC
- Designed and delivered a full-featured dental referral SaaS platform, including specialty-specific referral forms, a unified dashboard, in-app analytics, patient insurance collection, lead management, and team collaboration tools.
- Built a white-label embeddable referral intake system with per-office configuration, DocuSign PDF signing, GA4 analytics, domain allowlisting, and a security audit log.
- Designed and deployed a HIPAA-compliant AWS infrastructure covering networking, compute, database, auth, storage, CDN, WAF, and email, with encryption at rest and in transit, 6-year audit log retention, and automated drift detection.
- Built a CI/CD pipeline with two isolated environments (development and production), automated Docker builds, Terraform deploys, post-deploy QA, and a documented rollback procedure for zero-downtime releases.
Technologies: Full-stack Development, Web Development, Agile Software Development, Architecture, HIPAA Compliance, Terraform, AWS ECS Fargate, Playwright, E2E Testing, AWS WAF, Cloudflare, Stripe, CI/CD Pipelines, GitHub Actions, Amazon S3 (AWS S3)
AI Engineer
2024 - 2025
Ruley
- Architected and built the back end for the RAG system in a serverless, scalable infrastructure.
- Designed and implemented a comprehensive evaluation pipeline to benchmark and improve retrieval and generation quality.
- Built a robust CI/CD pipeline, enabling fast and reliable deployment cycles.
- Collaborated with product and mobile teams to deliver a production-grade GenAI app with real-time decision support for sports.
Technologies: TypeScript, Vector Databases, Firebase, Claude, OpenAI, Retrieval-augmented Generation (RAG), AI Agents, Embedding Models, LangGraph
Senior Principal Software Engineer
2023 - 2024
Kavak
- Founded and led the AI unit responsible for designing and developing the foundation for AI adoption within the company.
- Oversaw the design and development of AI agents, coordinating efforts across multiple teams and engineers.
- Developed essential Python libraries that streamlined the development process and significantly reduced project timelines.
- Designed and implemented tools, chatbots, microservices, and workflows that supported AI integration and enhanced operational efficiency.
- Mentored teams in software engineering best practices and architecture design, fostering a high standard of technical excellence across the organization.
- Provided technical leadership that drove innovation and shaped the company’s AI strategy.
Technologies: Python, LangChain, Amazon Web Services (AWS), PostgreSQL, Redis, GitLab CI/CD, Large Language Models (LLMs), Large Language Model Operations (LLMOps), OpenAI API, Amazon Bedrock AgentCore, Groq, Llama 3, Claude, Software Architecture, Technical Leadership, Leadership, Agile Software Development, REST APIs, Automation, Artificial Intelligence (AI), FastAPI, Pytest, Docker, Amazon S3 (AWS S3), LangGraph
Software Engineer
2023 - 2023
Lyft
- Designed and developed a service that automates endpoint security management as code.
- Integrated multiple sources and APIs to feed automation tasks to manage endpoint security.
- Built a Fluentd collector service to enrich a data pipeline.
Technologies: Python, Unit Testing, APIs, API Integration, Agile Software Development, Pytest
Senior React Developer
2023 - 2023
Stealth startup
- Developed and implemented new features on a map-based live dashboard using React, Mapbox, and GraphQL.
- Designed the UI for new interfaces, resulting in a fast and smooth user experience.
- Demonstrated strong problem-solving skills by independently resolving issues and bugs during the development process.
- Utilized AWS Amplify and authentication techniques to ensure secure access to the map-based dashboard.
- Collaborated effectively with the team through regular sync-up conversations, fostering a productive and communicative work environment.
Technologies: React, Mapbox, GraphQL, AWS Amplify, HTML5 Animations, CSS, JavaScript, TypeScript, Front-end, Data Visualization, API Integration, Web Development, DOM, Full-stack Development, REST APIs
D3.js Expert
2022 - 2023
Fiber Sense Pty Ltd
- Demonstrated strong proficiency in D3.js, which allowed for efficient and effective development of the dashboards and enabled the team to meet project deadlines.
- Implemented new features for a web-based events map, which showcased my skills in data visualization and mapping technologies.
- Enhanced the user experience and utility of a web application for decision-makers.
- Provided excellent insights and timely communication and met all requirements for the client.
Technologies: D3.js, JavaScript, Go, AWS Amplify, Leaflet, Maps, Web Mapping, Unit Testing, Amazon DynamoDB, AWS SDK, APIs, Front-end, Data Visualization, Charting, API Integration, Web Development, Dashboards, DOM, Full-stack Development, Data Cleansing, REST APIs
Full-stack Developer
2021 - 2022
Harrow Education LLC
- Built a full-stack web application for financial literacy using a modern web stack based on React.
- Evaluated and designed a cost-efficient architecture to fit customer needs.
- Developed dozens of interactive charts using D3.js.
- Deployed the application on a serverless architecture supported by Firebase.
- Designed and developed advanced algorithms to simulate the performance of financial markets.
Technologies: JavaScript, D3.js, JavaScript Charting, Node.js, React, HTML5, CSS, Financial Data, Algorithms, Firebase, Cloud Firestore, Firebase Cloud Functions, Jest, Serverless, Full-stack, HTML, Front-end, Data Visualization, Charting, Cron, Web Development, Dashboards, Architecture, Software Architecture, Technical Leadership, Leadership, Agile Software Development, Full-stack Development
Senior Staff Software Engineer
2017 - 2022
Miroculus
- Developed a custom pathfinding algorithm for droplet manipulation that has enabled many scientists and engineers to control microdroplets with simple scripts, yet robust configurations and smart algorithms.
- Co-authored and implemented a novel algorithm and pipeline to solve an advanced flow network problem with mixed-integer programming constraints. The system has been running on a serverless architecture since 2017.
- Devised a domain-specific language for scientists and engineers to code lab protocols. Users have been using and extending the language since 2017.
- Designed and developed a code-generation technology that powers our flagship web product, where users can use no-code tools to automate their lab protocols.
Technologies: JavaScript, Algorithms, Python, Discrete Optimization, AWS IoT, ARM Linux, System Design, Test-driven Development (TDD), AWS Lambda, APIs, Full-stack, Amazon Web Services (AWS), Bash Script, React, Node.js, Cron, API Integration, Amazon EC2, Amazon Elastic Container Registry (ECR), Web Development, TypeScript, Architecture, Software Architecture, Technical Leadership, Leadership, Full-stack Development, REST APIs, Docker, Amazon S3 (AWS S3)
Freelance Data Engineer and Analyst
2020 - 2020
Cívica Digital and IMCO
- Developed a bot to scrape and download public-domain documents from a government website. The bot simulates a user session to navigate the dynamic website and collect the needed information.
- Implemented a data-analysis pipeline to process hundreds of thousands of government transactions and calculate a corruption-risk index for every agency in the federal government.
- Updated a web scraper written in Go to work with new features and endpoints.
Technologies: Python, Pandas, Node.js, Go, Amazon Web Services (AWS), Bash Script, Data Engineering, Web Scraping, Charting, API Integration, Amazon EC2, Data Scraping, Dashboards, Scraping, DOM, Data Cleansing, Amazon S3 (AWS S3)
Data Engineer
2016 - 2017
Mapbox
- Developed a dashboard that was used by management to track success metrics worldwide.
- Built a big-data pipeline that processed and stored telemetry efficiently.
- Created a serverless system that periodically scraped dozens of data providers and collected traffic and incident information.
- Authored an open-source command-line and web tool to debug and inspect dense geospatial map tilesets in the browser. The project is in active use and has over 300 stars on GitHub.
Technologies: JavaScript, AWS Lambda, APIs, GeoJSON, Full-stack, Amazon Web Services (AWS), Bash Script, Geospatial Analytics, Data Engineering, HTML, React, Node.js, Mapbox GL, Web Scraping, Front-end, Data Visualization, Charting, Cron, API Integration, Amazon Elastic Container Registry (ECR), Data Scraping, Web Development, Scraping, Software Architecture, DOM, Full-stack Development, Data Cleansing, Amazon S3 (AWS S3)
Open Data Director
2013 - 2015
Mexican Presidency
- Led the creation of Datos Abiertos de México, the open data platform for the Mexican federal government.
- Acted as a key member and designer of the official open data policies and guidelines for the federal government.
- Led the construction of APIs for several federal agencies to comply with the open data policies.
- Founded and led dozens of open source projects from the government's open data efforts.
- Collaborated with organizations such as Google.org, The World Bank, and The OpenStreetMap Foundation to build digital innovation projects for Mexico.
Technologies: JavaScript, Ruby, AngularJS, Java, Python, Machine Learning, Data Analysis, Node.js, Linux, Agile Project Management, Software Engineering, Management, APIs, GeoJSON, Full-stack, MongoDB, HTML, Bootstrap, Web Scraping, API Integration, Web Development, Scraping, Architecture, Software Architecture, Technical Leadership, Leadership, Data Cleansing, REST APIs, Docker, Amazon S3 (AWS S3)
Project History
Toptal Hackathon Project
I designed and developed a web-based game for the Toptal Hackathon with my team. The project was created rapidly using modern web frameworks on a serverless architecture. Our team was very proud to make it to the top three finalists.
Using Deep Learning to Find Unmapped Roads in Satellite Imagery
https://github.com/defvol/unmappedIn the 2016 winter break, I devised a deep learning platform to find missing streets in OpenStreetMap. The system retrained the Inception-v3 convolutional neural network on labeled imagery from Mapbox Satellite to automate the search for unmapped roads in OSM.
I also built an accompanying web tool to control and watch the system in action named mapscan.
I also built an accompanying web tool to control and watch the system in action named mapscan.
An Elegant and Fast Sudoku Solver
I’ve been a big fan of Sudoku puzzles for years but never asked myself how to programmatically solve them—perhaps I didn’t want to ruin the magic.
One afternoon, as I was scribbling on a magazine puzzle, I realized I could use constraint programming for it. Like the classic queens problem, I would define constraint satisfaction and let a backtracking algorithm find a solution.
In less than an hour, I got my implementation running in Python and OR-Tools.
One afternoon, as I was scribbling on a magazine puzzle, I realized I could use constraint programming for it. Like the classic queens problem, I would define constraint satisfaction and let a backtracking algorithm find a solution.
In less than an hour, I got my implementation running in Python and OR-Tools.
Geolocate Places from Your Datasets
https://github.com/defvol/marcoI built this CLI transformation tool called marco for my data crunching needs.
This tool transforms CSV datasets into GeoJSON by matching names of places against a source of truth. Additional layers suitable for a data processing pipeline are included.
A very common use case is to build a map from a CSV from a government dataset.
This tool transforms CSV datasets into GeoJSON by matching names of places against a source of truth. Additional layers suitable for a data processing pipeline are included.
A very common use case is to build a map from a CSV from a government dataset.
Geo-is-osm—A Small Book on Geospatial Analysis for Developers
https://github.com/defvol/geo-is-osmWritten in Spanish, this open-source book presents a full walk through the tools and techniques needed to process geospatial data and build data-analysis pipelines and maps. The book is full of examples, ideas, and code snippets for the reader to use on the field.
A CLI tool to Monitor Cyclones near Mexico and US Coasts
https://github.com/defvol/huracanA simple CLI tool that fetches data from the National Hurricane Center and builds GeoJSON features for data pipelines. The tool can be used to query information, but the best use case is to build tools from its output.
A High Performance Web Proxy for Serving MJPG Streams to the Masses
https://github.com/defvol/Paparazzo.jsAfter a failing startup attempt, I decided to open source a core component of my technology—a high-performance web proxy for serving MJPG streams.
At that time, I couldn't find any reasonable way of serving MJPG streams without using a Flash or Java driver. Hence I decided to take a deep dive into the MJPG format and built this tool that we used on our back end.
The project is ten years old, as it was one of my first projects with Node.js, and it has over 180 stars on GitHub.
At that time, I couldn't find any reasonable way of serving MJPG streams without using a Flash or Java driver. Hence I decided to take a deep dive into the MJPG format and built this tool that we used on our back end.
The project is ten years old, as it was one of my first projects with Node.js, and it has over 180 stars on GitHub.
The Unofficial NOAA API
https://github.com/defvol/weathermanWhile working for the government, I realized the lack of clean APIs for hurricane information. After dealing with weather advisories from the NOAA, I decided to build a scraper and API for our project needs.
The project was built using Ruby and Sinatra and was well tested.
The project was built using Ruby and Sinatra and was well tested.
Coba Banking App
https://www.coba.ai/A React-native app for a fintech company.
I built the entire mobile app from a Figma design in just eight weeks. The app is connected to a back end via a REST API and allows users to manage their accounts and make transfers. The app was successfully published in both the Apple App Store and Google Play Store.
I built the entire mobile app from a Figma design in just eight weeks. The app is connected to a back end via a REST API and allows users to manage their accounts and make transfers. The app was successfully published in both the Apple App Store and Google Play Store.
Education
2009 - 2010
Master's Degree in Information Technology Management
Tecnológico de Monterrey - Monterrey, Mexico
2004 - 2008
Bachelor's Degree in Computer Science
Tecnológico de Monterrey - Monterrey, Mexico
2007 - 2007
Academic Internship in Computer Science
University of Illinois Urbana-Champaign - Champaign, IL, United States
Certifications
APRIL 2023 - APRIL 2026
AWS Certified Solutions Architect – Professional
Amazon Web Services (AWS)
JUNE 2021 - PRESENT
Data Analyst Nanodegree
Udacity
SEPTEMBER 2020 - PRESENT
Artificial Intelligence Nanodegree
Udacity
MAY 2018 - PRESENT
Deep Learning Nanodegree
Udacity
JULY 2014 - PRESENT
Machine Learning Summer School
Carnegie Mellon University
Skills
Libraries/APIs
Node.js, React, REST APIs, Pandas, D3.js, OpenAI API, Stripe, TensorFlow, JavaScript Charting, Mapbox GL, AWS Amplify, Leaflet, Playwright, Mantine
Tools
Cron, Vim Text Editor, Amazon Elastic Container Registry (ECR), Google OR-Tools, GitHub, AWS SDK, GitLab CI/CD, Claude, Pytest, Terraform, Prisma, Vitest
Languages
Python, JavaScript, Bash Script, CSS, HTML, TypeScript, Java, C, Ruby, CoffeeScript, Go, HTML5, GraphQL
Paradigms
Agile Software Development, Mobile Development, Agile, Agile Project Management, Management, Test-driven Development (TDD), REST, Unit Testing, Automation, HIPAA Compliance, E2E Testing
Platforms
Docker, Linux, Amazon Web Services (AWS), AWS Lambda, Firebase, Amazon EC2, AWS IoT, ARM Linux, Visual Studio Code (VS Code), Mapbox, Clerk, Vercel
Storage
Amazon S3 (AWS S3), PostgreSQL, MongoDB, Databases, PostGIS, Cloud Firestore, Amazon DynamoDB, Redis
Frameworks
Next.js, React Native, LangGraph, AngularJS, Bootstrap, Jest, Tailwind CSS
Other
APIs, Serverless, GeoJSON, Full-stack, Web Scraping, Data Visualization, Charting, API Integration, Data Scraping, Web Development, Dashboards, Scraping, Architecture, Software Architecture, Technical Leadership, Leadership, DOM, Full-stack Development, Data Cleansing, Software Engineering, Front-end, Large Language Models (LLMs), FastAPI, Supabase, Machine Learning, Deep Learning, Discrete Optimization, Data Analysis, Algorithms, Computer Security, Operating Systems, Compilers, IT Project Management, Digital Transformation, Knowledge Management, Artificial Intelligence (AI), Geospatial Analytics, Data Engineering, Convolutional Neural Networks (CNNs), OpenStreetMap, Data Mining, Programming Languages, System Design, Financial Data, Firebase Cloud Functions, Cloud Architecture, Cloud Infrastructure, Cloud Migration, Cloud Services, Maps, Web Mapping, HTML5 Animations, LangChain, Large Language Model Operations (LLMOps), Amazon Bedrock AgentCore, Groq, Llama 3, Vector Databases, OpenAI, Retrieval-augmented Generation (RAG), AI Agents, Embedding Models, AWS ECS Fargate, AWS WAF, Cloudflare, CI/CD Pipelines, GitHub Actions
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