Sergio Dario
Sanchez
Backend Engineering & Software Development Studio
I build scalable backend systems, cloud infrastructure and APIs that power your product — from architecture to production.
What we build for you
From MVP to enterprise-grade — I design and ship resilient backend systems that scale with your business. 15+ years building production software across ad-tech, AI, media and SaaS.
Backend Development
Robust, maintainable backends in PHP/Symfony, Node.js and Python. Event-driven architectures, REST & GraphQL APIs, hexagonal design and clean code at scale.
Cloud Infrastructure
Full cloud setups on AWS and Azure — Lambda, SQS, EC2, S3 and beyond. Serverless-first thinking, IaC and cost-optimized deployments you can trust in production.
DevOps & CI/CD
Automated pipelines, Docker containerization and observability setups. Fast, reliable deployments with Jenkins, GitHub Actions and zero-downtime release strategies.
API Design & Integration
Scalable, well-documented APIs that third parties and frontend teams love. Experience integrating ad platforms (Google Ads, Meta), AI services and payment gateways.
Tech Lead & Consulting
Architecture reviews, team mentoring, code standards and process setup. I bridge engineering excellence and product delivery across distributed teams.
Performance & Scalability
Database tuning, caching strategies and high-throughput queue design. Built systems serving millions of events per day without breaking a sweat.
Projects that shipped
A track record across ad-tech, AI, automotive and media — building the systems behind products people actually use.
- 2024 — Present
TheViralLab
Senior Backend EngineerAd-Tech · SaaSMillions of ads managed- — Full automation of advertising campaigns across Google Ads and Meta Ads at scale.
- — Designed Symfony services backed by MongoDB for high-volume ingestion pipelines.
- — Python analytics pipelines for creative performance analysis and client reporting.
PHP · SymfonyMongoDBPythonMeta APIGoogle Ads API - 2022 — 2025
Motorflash Solutions
Tech LeadAutomotive · PlatformFull architecture overhaul- — Led end-to-end migration to hexagonal architecture on Symfony 6, eliminating tech debt.
- — Established code standards, code review culture and CI/CD pipelines from scratch.
- — Mentored a cross-functional team of backend and frontend engineers.
PHP · Symfony 6MySQLDockerJenkinsVue.js - 2020 — 2023
Aivo
Backend DeveloperAI · ConversationalEnterprise-scale AI chatbots- — Built AI-powered conversational features on Laravel + AWS for enterprise clients.
- — Operated Lambda, SQS and EC2 workloads with zero-downtime Docker-based deploys.
- — Improved DevOps tooling and distributed observability across 10+ microservices.
PHP · LaravelAWS LambdaSQSEC2Docker - 2019 — 2021
La Voz del Interior
Tech LeadMedia · PublishingMillions of monthly readers- — Led the editorial platform rebuild on Laravel, Node and React under tight deadlines.
- — Architected scalable content APIs serving millions of monthly readers reliably.
- — Coached the engineering team on best practices, testing and delivery cadence.
PHP · LaravelNode.jsReactPostgreSQLRedis
The tools we use to build
Battle-tested technologies chosen for reliability, performance and long-term maintainability — not hype.
Backend
Cloud
Databases
DevOps & Frontend
Let's build your next product
Whether you need a full backend from scratch, a cloud migration or an extra expert on your team — let's talk about what you're building.