Senior software engineer
based in Mexico
Available for new projects
I help teams modernize enterprise software, ship cloud products, and deliver secure AI-enabled solutions.
10+ years across .NET, Angular, Node.js, Azure, and AWS — building business-critical systems, authentication platforms, ecommerce experiences, and internal tools that improve performance, security, and delivery speed.
I turn complex business requirements into reliable software systems that teams can scale, maintain, and trust.
Engineer, consultant,
and technical partner
I work best where business needs, product goals, and engineering complexity meet. My focus is helping teams ship maintainable systems, modernize legacy software, strengthen authentication and cloud architecture, and deliver features that create measurable operational value.
Review senior-level fit fast
Explore enterprise, SaaS, identity, and cloud work across teams that needed a developer who could own delivery, improve systems, and collaborate across product and engineering.
Hire for delivery, modernization, or technical rescue
I help teams improve ecommerce, authentication, cloud deployment, reporting, and internal platforms with pragmatic engineering decisions and production-ready implementation.
15+
Products unified under One WEX Identity SSO
60%
Faster report delivery through API and data improvements
40%
Less user input time on onboarding and event setup
How I can help
teams move faster
Product Delivery
& Feature Development
Ship new features, internal tools, and production-ready web applications with senior full-stack execution across .NET, Angular, and Node.js.
Cloud, APIs,
& Modernization
Modernize legacy systems, improve architecture, and streamline deployment workflows across Azure, AWS, CI/CD, and backend integrations.
Identity,
SSO & Security
Design and implement secure authentication journeys with Auth0, SSO, MFA, RBAC, and backend services that reduce friction without compromising security.
Data, Reporting,
& Operational Insights
Improve decision-making with reporting pipelines, SQL optimization, ETL, dashboards, and backend services that shorten time-to-insight.
Featured
projects
Comparing two visual directions for featured work: option 1 uses clean logos with stylized backgrounds, and option 2 uses product-style previews in laptop and phone mockups.
Clean logos with a stylized background
Best for recruiter scan speed, crisp brand recognition, and a more editorial portfolio feel.
- Fast to scan
- Strong brand emphasis
- Lower visual noise
Website previews in laptop and phone mockups
Best for client storytelling, showing product surfaces, and making each project feel closer to a case study.
- More product context
- Stronger client appeal
- Feels like a live work sample
CONTPAQi Marketplace
Production ecommerce work for one of Mexico’s leading business software companies, focused on catalog workflows, checkout reliability, and storefront performance.
Impact: Better purchase flow stability, stronger performance, and cleaner customization points for future delivery.
WIINIK Social Events Platform
Product development for event discovery, onboarding, permissions, and admin flows in a social platform built for organizers and attendees.
Impact: Reduced onboarding input time by 40% while improving platform governance and engagement tooling.
One WEX
Identity SSO
A unified authentication platform serving 15+ WEX products with secure sign-in, MFA, and smoother customer access across multiple product lines.
Impact: Reduced development costs by $3,200/month per product and migrated 100% of users without disruption.
RSI
Government Premier
Government revenue-processing SaaS with reporting, analytics, and workflow support for public-sector financial operations.
Impact: Delivered cloud-based reporting and operational visibility through Azure services, Power BI, and domain-driven backend design.
Experience, tools,
and business impact
My education
2014-2018
Computer Systems Engineering
Universidad Autónoma del CarmenComprehensive study of computer systems, software development, and system architecture.
2014
English Language and Culture
Illinois State UniversityAdvanced coursework in English language proficiency and cultural studies.
Work experience
2025 - Present
Senior Developer
Building and customizing NopCommerce features in ASP.NET Core and SQL Server to improve checkout reliability, catalog workflows, and storefront performance.
2025
Fullstack Developer
Built Angular, Node.js, and Firebase improvements for onboarding, permissions, and event management, including flows that reduced user input time by 40%.
2023 - 2024
Designed and implemented Auth0-based SSO, MFA, and backend services for WEX, reducing development costs and migrating all users to the new identity platform without disruption.
2023
Engineering Lead
Developed Azure-based SaaS solutions for government tax and revenue processing with Power BI integration and domain-driven .NET services.
2018 - 2022
Tech Lead & App Developer
Built REST APIs to unify five corporate systems, led 10+ internal workflows, and supported Azure migration plus CI/CD improvements.
My favourite tools
Languages
C#
TypeScript
PHP
Java
Frameworks
.NET
Laravel
Angular
Node.js
Cloud & DevOps
Azure
AWS
Google Cloud
DigitalOcean
Databases
SQL Server
PostgreSQL
MongoDB
Redis
Analytics & Identity
Power BI
Auth0
Grafana
Elasticsearch
What teams say
Leonardo played a key role in implementing One Identity with Auth0, enhancing security, reducing costs, and improving user experience. A proactive team player, he ensured a smooth rollout and widespread adoption. Any team would be lucky to have him!
Leonardo is a top-performing Software Engineer. He's a dedicated team player, always willing to go the extra mile, and he's impressively quick at picking up new technologies. He's a real asset to the team.
Let’s talk about your team, role, or project
Recruiter looking for senior engineering fit? Client looking for delivery, modernization, or architecture support? Send a message or schedule a call — I usually reply within 1 business day.
Review resume, LinkedIn, and work history for senior software engineering roles.
Share your scope, current stack, and business goal to discuss delivery, modernization, or technical rescue.
Done!
Thanks for your message. I'll get back as soon as possible.