Looking for a job

Mauricio Ayllon

@mauricioayllon

Full Stack Developer at FINCONECTA building AI agents and fintech-to-bank integrations across AWS and GCP.

At 369, I designed and built a USDT buy/sell transaction flow using bank QR codes, with idempotent webhooks to prevent duplicate crediting. I also designed the PostgreSQL transactional model for consistent balance updates and transaction records.

At FINCONECTA, I built conversational AI agents on AWS Lambda and implemented conversation persistence in MongoDB. I also led the design and implementation of a Java integration core connecting fintech platforms with banks, deployed on GKE.

At DIGITAL HARBOR, I designed and built a Spring Kafka integration library adopted by five microservices across three engineering teams. I owned its releases and maintenance, and deployed and maintained a self-managed Kafka cluster on Google Compute Engine.

I also built Inspektor, a project focused on privacy-preserving on-chain compliance using zero-knowledge proofs, and worked on Abstra’s interaction infrastructure and wallet for AI agents.

Experience

Work history, roles, and key accomplishments

Current

Full Stack Developer / Technical Lead

Current

369

Jan 2026 - Present (9 months)

Designed and built an end-to-end USDT buy/sell transaction engine with idempotent bank webhooks, and owns the platform's transactional data model on PostgreSQL. Built and maintains AWS infrastructure including EKS, RDS, Secrets Manager, and CloudWatch, with GitOps deployment via ArgoCD.

Java PostgreSQL Redis BullMQ AWS Amazon EKS RDS Secrets Manager Cloudwatch ArgoCD Kubernetes GitOps

Current

Semi Senior Full Stack Developer

Current

Finconecta

Oct 2024 - Present (2 years)

Built conversational AI agents on serverless AWS architecture (Node.js, React) with MongoDB persistence, and led the design of a Java-based fintech-to-bank integration core on GKE. Manages multi-cloud infrastructure as code across AWS and GCP.

NodeJS React AWS Lambda S3 SES MongoDB Java Google Cloud Platform GKE Infrastructure as Code

Mid Full Stack Developer

Digital Harbor

Feb 2023 - Oct 2024 (1 year 8 months)

Designed and built a custom Kafka integration library in Java/Spring Kafka, adopted by 5 microservices across 3 teams, and deployed a self-managed Kafka cluster on GCP. Developed enterprise microservices with NestJS and React, and implemented Redis-backed message durability.

Java Kafka GCP Compute Engine Redis NestJS React Microservices

Junior Full Stack Developer

Saffiro Informatica SRL

Sep 2021 - Feb 2023 (1 year 5 months)

Built backend services for an in-house CRM platform using Java and Node.js, wrote Oracle PL/SQL stored procedures, and developed React front-end features. Implemented QA automation with Selenium and Java to improve release reliability.

Java NodeJS Pl SQL React Selenium