Freelancer profile translated to English.

Description

AI Engineer & Senior Backend Developer — Go, autonomous agents, MCP

10+ years of experience building production backends. Last 18 months specialized in AI systems: autonomous agents, MCP (Model Context Protocol) integrations, RAG pipelines,

real-time conversational coaches.

What I do well:

High-performance Go backends (Gin, REST, streaming, WebSockets)
Agent architectures with LLMs (Claude, GPT-4, open-source models)
MCP integrations — servers and clients
Databases: MongoDB Atlas (failover, replica sets), PostgreSQL
Infrastructure: Docker, continuous deployments, observability

How I work:

Scoped, verifiable deliverables, production-ready code — no prototypes. No over-engineering, no premature abstractions, no promises I can't keep.

Availability: 1-3 month projects, remote, part-time or full-time as needed.

Native Spanish speaker, professional English.

Industry field of expertise

Languages

Spanish
Native or bilingual
English
Fluent

Workplace preferences

Remote only

Primarily works remotely

CHITA CLOUD
CEO & Founder
TELECOMMUNICATIONS
January 2025 - Today (1 year and 5 months)
Vigo, Spain
• ● Optimized freelancer-first cloud computing platform
• ● Developed infrastructure using Go and modern web technologies
• ● Integrated deployment automation and monitoring systems
• ● Remote Environment: Built and maintained entire platform working remotely
Golang Python
DIVILO FINTECH S.L.
Senior Go Engineer
March 2025 - June 2025 (3 months)
Acquiring and SoftPOS platform for clients like Cabify and large consumer ERPs (Coca-Cola, Heineken).

Go development of the Acquiring Management Back: payment orders, settlements, refunds, chargebacks, multi-tenant terminals and merchants.

Serverless architecture on AWS (Lambda, API Gateway, EventBridge, RDS PostgreSQL, DynamoDB, ECS, X-Ray) deployed with CloudFormation.

Event-driven design and DDD, OpenAPI as contract, >84% test coverage and end-to-end CI/CD.

Integration with the SoftPOS Android SDK (Tap to Phone) — Kotlin, Koin/Hilt — collaborating with the mobile team on the in-device payment flow.
SERQUO SOFTWARE S.A.
Senior Software Engineer
January 2023 - March 2025 (2 years and 2 months)
• ● Developed robust backend applications using Spring Boot
• ● Built frontend applications using React.js
• ● Designed and implemented automated testing frameworks with Selenium
• ● Collaborated in cross-functional teams delivering scalable microservices