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Software Engineer with extensive experience across backend and frontend development, system architecture, and cloud infrastructure. Builds scalable web applications and designs REST/GraphQL APIs while managing cloud services and deployment pipelines. Co-founder with a proven ability to lead technical strategy, drive product development, and deliver robust software solutions in fast-paced environments, including modular platforms, asynchronous messaging systems, and observability-focused infrastructure.…Software Engineer with extensive experience across backend and frontend development, system architecture, and cloud infrastructure. Builds scalable web applications and designs REST/GraphQL APIs while managing cloud services and deployment pipelines. Co-founder with a proven ability to lead technical strategy, drive product development, and deliver robust software solutions in fast-paced environments, including modular platforms, asynchronous messaging systems, and observability-focused infrastructure.

JAVIER MORENO CASTILLO

Software Engineer, Full Stack Developer, Back-End Developer, +2

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Software Engineer with extensive experience across backend and frontend development, system architecture, and cloud infrastructure. Builds scalable web applications and designs REST/GraphQL APIs while managing cloud services and deployment pipelines. Co-founder with a proven ability to lead technical strategy, drive product development, and deliver robust software solutions in fast-paced environments, including modular platforms, asynchronous messaging systems, and observability-focused infrastructure.…Software Engineer with extensive experience across backend and frontend development, system architecture, and cloud infrastructure. Builds scalable web applications and designs REST/GraphQL APIs while managing cloud services and deployment pipelines. Co-founder with a proven ability to lead technical strategy, drive product development, and deliver robust software solutions in fast-paced environments, including modular platforms, asynchronous messaging systems, and observability-focused infrastructure.

Available to hire

Software Engineer with extensive experience across backend and frontend development, system architecture, and cloud infrastructure. Builds scalable web applications and designs REST/GraphQL APIs while managing cloud services and deployment pipelines.

Co-founder with a proven ability to lead technical strategy, drive product development, and deliver robust software solutions in fast-paced environments, including modular platforms, asynchronous messaging systems, and observability-focused infrastructure.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Spanish; Castilian

Fluent

English

Advanced

Catalan; Valencian

Advanced

Work Experience

Co-Founder and Senior Software Engineer at Resvōk

November 1, 2024 - Present

Led development of a modular booking platform for hospitality and service-based businesses. Designed backend architecture using Node.js, PostgreSQL, Redis, and RabbitMQ, and integrated React/TypeScript frontends. Built asynchronous messaging and queue management systems with RabbitMQ. Introduced logging, metrics, and alerting for proactive monitoring and improved uptime. Managed infrastructure and deployment pipelines on cloud-based services, including containerization, CI/CD, monitoring, and observability.

Software Engineer at Portpal

March 1, 2024 - August 1, 2025

Participated in frontend application development using React and Vue.js. Led a frontend architecture migration to a Turborepo monorepo structure (React & TypeScript), streamlining shared package management and accelerating build times by ~30%. Designed and configured CI/CD build and test pipelines to automate releases across environments. Integrated backend services built with Go and MySQL for high-concurrency data operations.

Senior Software Engineer at Audax Digital

February 1, 2021 - February 1, 2024

Developed and maintained enterprise-level web applications using React, Node.js, and PostgreSQL. Improved API performance and optimized data queries for large-scale datasets. Integrated third-party APIs to support payments, bookings, content management, and marketing automation features.

Full Stack Developer at Adludio

October 1, 2019 - October 1, 2020

Built and maintained advertising tech platforms using React, AWS, Golang, TypeScript, and GraphQL. Used Terraform for Infrastructure as Code to provision cloud resources. Integrated data-intensive workflows and optimized real-time performance across distributed systems. Contributed to internal tools for more efficient creative campaign delivery, and migrated legacy Python APIs to Node.js/TypeScript to improve maintainability and performance.

Developer & Co-Founder at Dinobyte

June 1, 2019 - October 1, 2020

Co-founded and developed indie software projects, managing native mobile delivery from concept to release. Developed landing pages using Angular to showcase projects and increase user engagement. Worked across the stack with Java, Flutter, and Firestore, focusing on modular product design.