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Nahum Blanco Rojas

@nahumblancorojas

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Full Stack Software Engineer at COSTAR GROUP, building NestJS and TypeScript services and cross-client email templates.

Costa Rica

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At COSTAR GROUP, I design backend services with Domain-Driven Design and Clean Architecture, using NestJS and TypeScript to implement business workflows. I also develop full-stack features with React and build production email templates for cross-client compatibility.

At ZONDA, I architected a Contentful-based CMS integration with an Anti-Corruption Layer and a synchronization model for the platform’s search model. I also delivered a blog system serving approximately 3,000 users and established a reusable frontend architecture.

At ZONDA, I designed a reusable email design system that reduced email development time from approximately four months to one month. At EX2 OUTCODING, I developed .NET applications and APIs, contributed to email marketing infrastructure, and progressed from Jr. .NET Developer to Mid. .NET Developer.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer III

Current

CoStar Group

Aug 2026 - Present (3 months)

Design and develop backend services using Domain-Driven Design and Clean Architecture. Implement full-stack features with React and NestJS, and design production email templates for cross-client compatibility.

NestJS TypeScript React MongoDB Domain Driven Design Clean Architecture Email Engineering

Full Stack Engineer

Zonda

Jan 2024 - Aug 2026 (2 years 7 months)

Architected and implemented software solutions using DDD, Clean Architecture, CQRS, and event-driven patterns. Led technical analysis, built a CMS integration, and designed a reusable email design system that reduced development time from four months to one month.

Domain Driven Design Clean Architecture CQRS SQL Server Contentful BigQuery React NestJS Email Design Systems Design Tokens

Mid .NET Developer

EX2 Outcoding

Jan 2023 - Jan 2024 (1 year)

Led technical execution of development initiatives, translating business requirements into actionable tasks. Developed web applications using .NET, C#, JavaScript, React, and SQL, and contributed to frontend refactoring and backend API design.

.NET C#JavaScript React SQL Redux RxJS Domain Driven Design Clean Architecture

Jr .NET Developer

EX2 Outcoding

Jan 2021 - Jan 2023 (2 years)

Developed and maintained web applications using .NET, C#, JavaScript, React, and SQL. Contributed to frontend refactoring, email development, and applied SOLID principles and design patterns.