Open to opportunities

Diego Blaer

@diegoblaer

Message

Senior full stack engineer building end-to-end web apps and leading architecture from idea to release.

Argentina

Message

What I'm looking for

I’m looking for a team where I can own end-to-end features, drive architecture decisions, and ship with strong REST/GraphQL design, CI/CD automation, and AWS—while mentoring engineers and balancing speed with long-term maintainability.

I’m a Senior Full Stack Engineer with 10+ years of experience delivering greenfield applications end-to-end. I build across React.js, TypeScript, Node.js, Next.js, and Nest.js, with strong REST/GraphQL API design at the core of how I ship.

In my current role, I deliver end-to-end features across a React/TypeScript frontend and a NestJS/FastAPI microservices backend using GraphQL Federation, PostgreSQL, and Redis, with AWS (Cognito, S3) and CI/CD practices. I drive cross-cutting architecture decisions across the frontend, GraphQL gateway, and domain services, balancing product velocity with long-term maintainability, and I focus on observability using OpenTelemetry.

I also prioritize release quality and engineer growth—raising confidence with Vitest, Jest, and Playwright, and mentoring through reviews and knowledge-sharing. Across my past roles (e.g., building from scratch, migrating to a TypeScript/Next.js/GraphQL stack, and leading frontend architecture for an AI-powered platform), I’ve consistently owned technical roadmaps, built scalable foundations, and helped teams deliver reliably.

Experience

Work history, roles, and key accomplishments

Current

Senior Full Stack Engineer

Current

Zenda

Oct 2025 - Present (9 months)

Delivers end-to-end features across a React/TypeScript frontend and NestJS/FastAPI microservices backend using GraphQL Federation. Drives architecture decisions and improves release quality with automated testing and observability.

React TypeScript NestJS fastAPI PostgreSQL Redis CI CD Docker OpenTelemetry Vitest Jest Playwright

Lead Front End Engineer

Fetcher

Mar 2024 - Oct 2025 (1 year 7 months)

Owned front-end architecture and technical roadmap for an AI-powered talent sourcing platform. Mentored engineers through code reviews to build technical excellence across the team.

Front End Engineer

CreatorSpace

Aug 2023 - Feb 2024 (6 months)

Designed and built responsive front-end interfaces for a social media management application from the ground up. Partnered with product management on scope to deliver the required UI functionality.

Lead Front End Engineer

OnPoint

Feb 2023 - Jul 2023 (5 months)

Led migration of the flagship product to a modern TypeScript/Next.js/GraphQL stack. Owned key architecture decisions for the rewrite and used GitHub Actions to implement CI/CD, while providing team mentorship.

TypeScript Next.js GraphQL GitHub Actions CI CD

Front End Engineer

Clear Capital

Mar 2022 - Feb 2023 (11 months)

Helped design the architecture of a shared component library for mobile and web applications from scratch. Led creation of unit and integration test suites to ensure correctness across releases.

Next.js React Native TypeScript Unit Testing Integration Testing

Lead Front End Engineer

Surefire Local

Jan 2020 - Mar 2022 (2 years 2 months)

Built the company’s mobile application from scratch, owning core architecture and scalability decisions. Grew into leading a fully remote, cross-functional team of three additional developers.

Fullstack Developer

PagosPyme

May 2017 - Jan 2020 (2 years 8 months)

Developed and integrated features across backend and frontend for a credit card payment gateway. Contributed to delivering end-to-end payment functionality.

Fullstack Developer

Naex IT

Feb 2012 - Apr 2017 (5 years 2 months)

Architected a biometric application on Arduino from scratch and shipped production code for client websites. Ran QA across multiple sites while maintaining and updating the deployed code.

Arduino QA Testing Website Development