LALeonardo Apollonio
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Senior Full-Stack .NET Engineer

Full-stack engineering for business-critical products.

I build and modernize reliable applications, APIs, and internal platforms—from backend architecture to polished front ends.

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Available for freelance projects
Leonardo Apollonio
Work modeRemote · Global
8+Years building software
Years building software8+
AvailabilityFreelance
Based inBuenos Aires
CitizenshipArgentina + Italy

Sector experience Enterprise · Maritime · Media · Banking · Web platforms

How I can help

Senior engineering, without the overhead.

I can join an existing team or take ownership of a focused delivery—from first technical decision to production-ready result.

01

Business applications

Internal tools, workflows, reporting, and operational platforms tailored to how your team actually works.

02

APIs & integrations

Reliable REST APIs and system integrations with clean contracts, validation, observability, and maintainable code.

03

Legacy modernization

Incremental upgrades for .NET systems that reduce risk while improving performance, security, and developer velocity.

04

Full-stack delivery

End-to-end implementation with .NET, Angular or React—from data and backend logic to accessible front-end experiences.

.NET CoreASP.NET MVCC#AngularReactTypeScriptAzureAWSPostgreSQLSQL ServerGKEOpenShift
Selected experience

Systems built for real operations.

A track record across enterprise operations, maritime logistics, media, banking, and web platforms.

01Confidential enterprise client

Enterprise operations platform

Full-stack delivery of modules and reliability improvements for a private platform that centralizes operational workflows and business data.

Full-stackEnterpriseCloud
02Inchcape Shipping Services

Real-time maritime tracking

Full-stack development for a system covering live ship tracking plus port and terminal information.

.NETPostgreSQLAWS
03Globant

Subscription & user APIs

Maintenance and creation of APIs managing subscriptions, newsletters, and user information for a major media group.

.NET CoreREST APIsGKE
04ITProviders · Banco Galicia

Digital banking workflows

New modules, maintenance, and a file conversion and validation service for business banking payment products.

.NET CoreOpenShiftJavaScript
Career

Eight years of hands-on delivery.

01

International energy company

Full Stack .NET Developer

Full-stack .NET development
02

Inchcape Shipping Services

Full Stack .NET Developer

Maritime technology
03

Globant

Back End .NET Developer

APIs for digital media
04

ITProviders · Banco Galicia

Full Stack .NET Developer

Digital payments
05

Epidata

Full Stack .NET Developer

Enterprise web systems
Public code

A few repositories from my learning and technical challenges.

View all 11 repositories
PUBLIC

PF-Apollonio

Final Angular course project with a component-based front end.

Angular 15 · TypeScriptView repository
PUBLIC

OriginSoftwareChallenge

A full-stack .NET technical challenge backed by SQL Server.

C# · SQL Server · HTMLView repository
PUBLIC

e-commerce-fara-leon

A storefront for handmade design objects built as a React course project.

JavaScript · E-commerceView repository
Education & credentials

Grounded in fundamentals, always learning.

Associate Degree in Computer Programming

Universidad Tecnológica Nacional · Grade 8.71

Angular & SAFe 6 Practitioner

Coderhouse · Scaled Agile

React JS & intermediate English

Coderhouse · Centro Universitario de Idiomas

Have a project in mind?

Let’s make the next release easier.

Tell me what you need to build, improve, or unblock. I’ll reply with a practical next step.

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