03/20/2026 updated

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Backend Developer | Node.js & .NET | APIs, Automation & Integrations

Mar del Plata, Buenos Aires, Argentina Bachelor of Science in Information Systems
Mar del Plata, Buenos Aires, Argentina Bachelor of Science in Information Systems

Profile attachments

Julieta D'Angelo Resume 2026.pdf

About me

Backend developer with 10+ years of experience in Node.js and .NET, building APIs, integrations, and automation solutions. Strong focus on performance, clean code, and reliability. I deliver efficient solutions and communicate clearly to meet real business needs.

JavaScriptPHPAgile MethodologyArchitectural DesignASP.NET MVC FrameworkBootstrap (Software)Delphi (Programming Language)Browser CompatibilityBusiness Process ImprovementCloud ComputingCode ReviewDependency InjectionDevOpsMiddlewareEntity FrameworkUser Interface DesignScalabilityMicrosoft SQL ServersMongoDBMySQLNode.jsOracle DatabasesBlockchainPublish SubscribeProcess AutomationSmart ContractsSecurity ManagingSolution Deployment DescriptorTypeScriptData/Record LoggingGoogle Cloud.NET CoreDatabase OptimizationBackendGitWeb TechnologiesReact NativeSafety PrinciplesSoftware Version ControlServerless ComputingDatabase AdministrationLegacy SystemsMicroservices
Backend Development
Advanced expertise in .NET Core, ASP.NET MVC, Node.js with layered architecture design, dependency injection patterns, and microservices implementation

Database Management
Comprehensive experience with SQL Server, MongoDB, MySQL, Entity Framework, and database optimization for high-performance, scalable systems

Modern Web Technologies
Proficient in JavaScript, TypeScript, Razor, Bootstrap with responsive interface design and cross-browser compatibility

Cloud Technologies
Experience with Azure Functions, Google Cloud and AWS.

Security Implementation
Strong security standards with JWT authentication, HMAC signatures, and Helmet middleware

Blockchain Development
Smart contracts design and implementation, blockchain integrations

Version Control and Collaboration
Git, agile development practices, code reviews, and continuous improvement initiatives

Legacy Systems
ASP Classic, PHP, Borland Delphi, Oracle database management, ASP.Net

Languages

EnglishGoodSpanishNative speaker

Project history

Senior Node.js Backend Developer

Trick Studios
Designed and implemented layered backend architecture with clean code practices, built user management and wallet integration features, applied security standards, developed logging systems, worked on database design with MongoDB, collaborated on blockchain integrations and smart contracts, supported frontend with React Native contributions

Senior .NET Full Stack Developer

Trick Studios
Built enterprise-level solutions with .NET Core and ASP.NET MVC, designed and maintained microservices, applied dependency injection patterns, created responsive interfaces with Razor, Bootstrap, and JavaScript

Senior Nest.js Backend Developer

Healthcare Platform
Contributed to monorepo architecture with Nx, built and maintained backend services with NestJS, integrated with Firestore for real-time data management, implemented automated processes, developed reporting features with ExcelJS, established structured logging and monitoring

Web Developer

Up Store / Saitech
Designed and implemented shopping cart system in WordPress and delivered technical support and maintenance for DVR systems

.NET Fullstack Developer

Facturante
Designed and implemented new features and maintained high-volume electronic invoicing system used by multiple clients, ensuring stability and reliability

Full Stack Developer

Freelance
Collaborated directly with clients to design and develop custom web applications using PHP, built responsive web interfaces using Bootstrap and JavaScript, designed and optimized relational database solutions using SQL Server and MySQL, developed and maintained enterprise applications in ASP Classic

PHP Developer

Glesec
Developed and maintained secure web-based solutions for cybersecurity company using PHP and MySQL, delivering new features, optimizing database performance, and ensuring high availability and data integrity

.NET Full Stack Developer

Making Sense
Contributed to and led development of key modules within enterprise applications using C# .NET, ASP.NET MVC, and Entity Framework, designed and maintained high-performance SQL Server database solutions, collaborated with international teams, mentored junior developers and conducted code reviews

Delphi / .NET Developer

Delsat Group
Built and maintained desktop applications for telecommunications industry using Borland Delphi and Oracle, developed intranet applications with C# and SQL Server, worked on long-term projects ensuring stability and continuity

PHP Developer

Comtron
Built web medical solutions using PHP and MySQL, collaborated with small team focusing on reliability and accuracy for healthcare clients

ASP Classic Developer - Internship

Synt
Developed modules for government intranets with ASP Classic, JavaScript, and MySQL, learned to balance technical delivery with strict compliance requirements

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