Sergio Salcedo - Software Engineer & Founder

Sergio Salcedo

Senior Software Engineer

6+ Years ExperienceProduct-FocusedStartup Founder

I'm a Senior Software Engineer with 6+ years of experience specializing in architecting and scaling resilient digital products end-to-end. I thrive on translating complex business requirements into high-performance, production-ready systems. My focus is on system design, high-concurrency architectures, and balancing engineering efficiency with measurable business impact.

Featured Projects

DomusJS

DomusJS

Latest

A scalable, TypeScript-first framework for real-world backends. Provides a clean, modular foundation with built-in support for common features like auth, job queues, and cron jobs.

TypeScriptClean ArchitectureDDD
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Portefy - On-demand Business Deliveries

Portefy

A full-stack logistics platform to simplify on-demand cargo transport. The system included real-time tracking and route optimization, scaled across several Spanish cities.

Full-StackReal-timeLogistics
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Open Source Projects

Fleet Location Streaming - Real-time Tracking System

Fleet Location Streaming

A low-latency, real-time tracking system for vehicle transportation companies. Built with DomusJS, featuring WebSocket-based streaming, Kafka integration, and DDD-ready architecture.

Real-timeWebSocketKafkaDDD
View on GitHub
Node High Scale Auth - Microservices Authentication System

Node High Scale Auth

A microservices-based authentication system designed to handle massive scale—simulated for 1.9 billion logins per month. Optimizes Node.js performance by isolating CPU-intensive operations into dedicated microservices.

MicroservicesHigh ScaleKubernetesPerformance
View on GitHub

More Projects

S

Scribba

Cloud-based transcription service powered by Whisper AI, delivering accurate transcriptions across all audio formats.

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R

RoomPicAI

Interior design platform leveraging Generative AI to create personalized room designs in seconds.

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T

TurboClips

End-to-end solution for creating engaging TikTok content, combining video processing with ML-driven content generation.

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C

CMAM Automation

Advanced automation system for nuclear research facilities, enhancing operator safety and experimental precision.

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I

Inviv

Real estate investment platform offering smart tools and handpicked opportunities for serious investors.

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L

Legal Search Platform

Powerful full-text search that helps legal professionals quickly find and query documents.

Tech Stack & Expertise

Tech Stack

  • Architecture & Patterns: I apply principles like DDD, CQRS, and Clean Architecture to build systems with clear boundaries—reflected in DomusJS, a framework I've been shaping over the years.

  • Distributed & Scale Systems: I design and build distributed systems that handle massive scale, implementing microservices architectures, event-driven patterns, and horizontal scaling strategies to support high-throughput applications.

  • Observability: I implement comprehensive monitoring and observability solutions using OpenTelemetry for instrumentation, with dashboards powered by Signoz and Prometheus to ensure system reliability and performance visibility.

  • DevOps: I use Docker, CI/CD, Kubernetes, Terraform, and cloud platforms like AWS or GCP to ship reliable systems.

  • Data & Performance: I design solid relational data models (PostgreSQL/MySQL) and use Redis where low latency and caching matter.

  • Integrations: I've worked extensively with Odoo, creating custom modules and adapting it to real-world business processes.

  • Full-Stack Development: I build modern web applications with React/Next.js on the frontend and type-safe, maintainable backends using Node.js and TypeScript.

  • Mobile Development: I also build cross-platform apps with React Native when the project calls for it.

Specialized Experience

  • AI Integration: Proven track record in developing AI-powered applications. Experienced in integrating and fine-tuning various AI models including OpenAI's GPT, Whisper, and FLUX. Successfully delivered multiple AI SaaS products that combine different models for innovative solutions.

  • Logistics Solutions: Developed sophisticated route optimization algorithms and delivery management systems. Created efficient solutions for real-time tracking and delivery optimization that improved operational efficiency by over 30%.

  • Real Estate Technology: Built comprehensive property management platforms and analytics tools. Experienced in developing solutions for property listing, tenant management, and market analysis using data-driven approaches.

  • Digital Transformation: Successfully led multiple digital transformation projects, creating custom solutions that automated workflows and improved operational efficiency. Skilled in analyzing business processes and implementing tailored technological solutions.