Open to opportunities

Alan Perez

@alanperez

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Senior backend engineer specializing in resilient systems and AI-driven pipelines for real business impact.

Argentina

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What I'm looking for

I’m looking for a backend role where I can architect resilient, high-performance systems and AI-driven pipelines, collaborate with product and stakeholders, and own outcomes—quality, reliability, and operational excellence—using modern cloud and engineering best practices.

I’m a solution-oriented engineer with 6+ years of experience building resilient systems across mobility, finance, and logistics. I bridge the gap between business needs and technical execution, using a technology-agnostic mindset to solve problems efficiently.

My core focus is architecting high-performance backends and AI-driven pipelines—optimizing LLM prompts and JSON schemas for accuracy and audit traceability, and building modular, scalable engines. I also deliver reliability through deterministic caching, failover mechanisms, and CI/CD testing suites across the stack.

I enjoy end-to-end collaboration: from defining NestJS microservices with clean architecture and MongoDB to integrating RESTful APIs and third-party services with standardized error handling, retries, and observability. I leverage AI-assisted development (Claude, GitHub Copilot) to accelerate delivery cycles while maintaining high-quality, audit-ready software.

Experience

Work history, roles, and key accomplishments

Software Engineer

ChubutIT

Jan 2026 - Mar 2026 (2 months)

Architected and evolved AI-driven document extraction pipelines by optimizing LLM prompts and JSON schemas for accurate, fully auditable data. Built deterministic caching with concurrency control and improved resilience using failover mechanisms plus CI/CD testing suites.

LLM Based Document Extraction Prompt Engineering Caching Strategies Concurrency CI CD Pipelines AWS

Senior Backend Developer

FIDI

Sep 2025 - Nov 2025 (2 months)

Led the Transportation/Integrations team delivering MetroQR/MetroMUV backend work by aligning the roadmap with client stakeholders. Architected NestJS clean-architecture microservices with MongoDB and standardized integration libraries, REST APIs, observability, and error handling/retries.

NestJS Microservices Architecture MongoDB RESTful APIs Observability Error Handling Roadmapping

Senior Backend Developer

ChubutIT

Feb 2025 - Sep 2025 (7 months)

Consulted for FIDI and led the Transportation/Integrations stream, coordinating backend delivery and stakeholder alignment for MetroQR/MetroMUV. Built scalable NestJS microservices with MongoDB, developed integration libraries and REST APIs, and drove code review standards, requirement workshops, and delivery planning.

NestJS Microservices Architecture MongoDB REST APIs Code Review

Senior Backend Developer

Seeds

Jul 2024 - Jan 2025 (6 months)

Consulted for Coca-Cola Andina by migrating critical services from Azure to AWS, improving reliability and operational efficiency. Directed multi-country production deployments, mentored teams, and built backend services using AWS/CI/CD and MySQL while partnering with frontend to ship integrated features.

AWS Migration CI CD Migration To Production MySQL API Development Cross Squad Mentoring Backend Integrations

Senior Backend Developer

MOX

Jul 2023 - Jul 2024 (1 year)

Designed and integrated REST APIs while leading a development team, reducing processing time by 50% and increasing system reliability. Implemented code review standards, shipped new scalable services, and initiated a cloud-cost optimization program.

API Development Performance Optimization System Reliability Engineering Cloud Optimization Team Leadership Code Review Scalability Reliability

Backend Developer

ATOM

Feb 2022 - May 2023 (1 year 3 months)

Implemented critical data-processing algorithms and improved overall application efficiency and user experience. Optimized database queries to reduce high-load data retrieval time by ~20% and created automation scripts to accelerate delivery.

Scripting API Integration

Software Engineer

Santander Tecnologia

Apr 2021 - Feb 2022 (10 months)

Integrated APIs using a BFF architecture, managing batch processing and CronJobs to stabilize user experience and platform reliability. Strengthened application security and delivered microservices on OpenShift, Docker, and GitLab CI with OpenAPI/Swagger documentation and MongoDB/Mongoose plus legacy SOAP/REST endpoints.

Batch Processing Microservices OpenShift Docker Gitlab CI OpenAPI Application Security MongoDB

Fullstack Developer

Gen IT

Jan 2020 - Apr 2021 (1 year 3 months)

Delivered three customer-facing projects end-to-end under Agile ceremonies, coordinating client feedback for on-time iterative launches. Built CI/CD pipelines with automated testing and developed full-stack services using Node/TypeScript, PHP/Laravel, and Angular with containerized workflows in Docker.

Agile Delivery CI CD Pipelines Automated Testing TypeScript PHP (Laravel)Angular Docker