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Mateo Baranji

@mateobaranji

Message

I build scalable Node.js platforms, APIs, and microservices serving millions of daily requests.

Croatia

Message

I've delivered enterprise SaaS platforms at Globant, Capgemini, Endava, Thoughtworks, and EPAM Systems, building Node.js services and modern web applications for hundreds of thousands of users.

At Globant, I architected backend services for a 650K+ user platform, delivered 50+ REST and GraphQL endpoints handling 2.3M+ daily requests, and led migration of 18 legacy services into Docker and Kubernetes microservices. I also improved API latency by 55%, shortened releases from weekly to daily deployments, and mentored six engineers.

I build across Node.js, TypeScript, NestJS, React, Next.js, Angular, cloud infrastructure, databases, CI/CD, monitoring, and secure API integrations. I enjoy leading architecture reviews, improving delivery practices, and building reliable systems that scale.

Experience

Work history, roles, and key accomplishments

Senior Node.js Full Stack Developer

Globant

Sep 2023 - Feb 2026 (2 years 5 months)

Architected and developed scalable backend services using Node.js, TypeScript, and NestJS for enterprise SaaS platforms serving 650K+ users. Designed and implemented 50+ RESTful APIs and GraphQL endpoints processing 2.3M+ API requests per day, and led migration of 18 legacy services to containerized microservices.

TypeScript NestJS Next.js React RESTful API Design GraphQL Microservices Architecture Docker Kubernetes PostgreSQL MongoDB Redis JWT RBAC GitHub Actions Jenkins CI CD Node

DevOps/ Node.js Full Stack Developer

Capgemini

Jul 2020 - Aug 2023 (3 years 1 month)

Developed enterprise web platforms using Node.js, NestJS, Angular, and TypeScript for financial and retail clients supporting 150K+ monthly users. Built 35 reusable Angular components and optimized PostgreSQL queries, reducing average execution time from 210ms to 95ms.

Node NestJS Angular TypeScript PostgreSQL Redis Jest Mocha Agile Scrum

Tech Lead / Node.js Full Stack Developer

Endava

Jul 2017 - Jun 2020 (2 years 11 months)

Led architecture and development of enterprise SaaS platforms using Node.js, TypeScript, NestJS, Next.js, and React serving 700K+ users. Designed microservices architecture with 20+ services and implemented CI/CD pipelines, reducing deployment time by 65%.

Node TypeScript NestJS Next.js React Microservices Architecture Docker Kubernetes RESTful API Design GraphQL GitHub Actions Jenkins AWS EC2 RDS S3 Cloudwatch PostgreSQL Redis ELK Stack Prometheus

Full Stack Developer

Thoughtworks

Oct 2014 - May 2017 (2 years 7 months)

Developed full-stack web applications using Node.js (Express.js, NestJS) and React/Angular, supporting platforms with 50K+ active users. Built and maintained 20+ RESTful APIs and optimized PostgreSQL and MongoDB databases, improving query performance by 30%.

Node NestJS React Angular TypeScript Redux HTML5 PostgreSQL MongoDB Docker AWS Jest Mocha JWT RBAC

Junior Node.js Developer

EPAM Systems

Jun 2013 - Aug 2014 (1 year 2 months)

Assisted in developing backend services using Node.js and Express.js for enterprise platforms used by 6K+ internal users. Developed 15+ REST API endpoints and fixed 180+ bugs, improving application uptime from 96% to 99.3%.

Node.Js Development MongoDB MySQL AngularJS JavaScript