Misael Paredes

Senior Backend Architect

Elixir/Phoenix, AI systems, and enterprise-scale backends. 15 years in high-transaction retail. Open to remote roles worldwide.

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Who I am

I'm Misael Paredes — a backend architect who turns complex business rules into systems that stay fast, observable, and easy to evolve.

  • → Led backend modernization across retail and fintech platforms serving thousands of daily transactions.
  • → Built production RAG assistants with Elixir, pgvector, and LLM providers — from prototype to deploy.
  • → Mentored engineers and defined architecture standards that reduced incident rates and delivery risk.

Open source activity

Public GitHub contribution graph.

Featured project

Production systems with measurable impact.

elixir ai

Production RAG Assistant

Self-hosted knowledge base that puts expert know-how in front of users around the clock.

Relying on OpenAI as the vector store tied critical answers to a third party and blocked full control over proprietary expertise.

Role

Architect & sole backend engineer

Stack

Elixir, Phoenix LiveView, PostgreSQL, pgvector, OpenAI / Gemini

Outcome

Decoupled embeddings and retrieval to on-prem servers with pgvector, delivering 24/7 expert Q&A with citations, rate limits, and multi-channel access.

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Enterprise scale

Retail systems that cannot afford downtime.

java retail leadership

Ferretería EPA — Agil ERP (Compiere)

Maintenance, enhancements, and new modules on the national retail ERP powering EPA hardware stores.

A high-volume retail chain needed its Compiere-based ERP to keep pace with billing, inventory, logistics, and in-store operations across the country.

Role

Developer → Technical Lead → Technical Manager

Stack

Java, Compiere, PostgreSQL

Outcome

Spent six years evolving the Agil ERP — from hands-on development to leading the team and owning technical delivery for mission-critical retail systems.

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Selected projects

Shipped products and case studies across backend, AI, and retail.

Technologies

The stack behind the systems I design and ship.

Languages & Runtimes

ElixirErlangJavaSQL

Frameworks

PhoenixLiveViewSpringBootBroadway

Data & AI

PostgreSQLpgvectorRedisKafkaLLMRAG

Platform

DockerCI/CDGrafanaOTPObservability

Architecture & leadership

Recent roles where I owned technical direction.

High-concurrency Elixir/Phoenix microservices with GraphQL, plus production RAG pipelines, vector stores, and AI agents.

  • Built and maintained microservices supporting mobile and web applications.
  • Implemented semantic search over knowledge bases with pgvector and document embeddings.

Continuity of billing, logistics, inventory and control systems for Ferretería EPA.

  • Incident management and support for mission-critical retail ERP operations.
  • Tracked and prioritized new business requirements from production feedback.

Led multidisciplinary teams and owned DevOps across Intelix's enterprise client portfolio.

  • Managed technical delivery and architecture decisions across client projects.
  • Unified DevOps practices — SVN-to-Git migrations, standardized Git workflows, and CI/CD reviews.
  • Coordinated backend squads across Java and integration-heavy systems.
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