Emmanuel Jimenez

LinkedIn: linkedin.com/in/iefaj | GitHub: github.com/efaj
Location: Dublin, Ireland

Note: CReNET Games serves as my personal architectural sandbox: a live production environment where I design, deploy, and load-test real-time distributed systems, asynchronous AI orchestration (MCP), and state synchronization before advocating for these patterns in enterprise environments

Software Engineer with 18 years of experience specializing in high-scale distributed systems, security, and Applied AI. Proven track record at Amazon AWS and Workday of translating ambiguous business needs into ratified technical designs and automated Python solutions. Expert at driving technical influence across organizations: from authoring cross-departmental HLDs at AWS to winning high-stakes competitive hackathons. Combines Master's-level NLP with a builder's mentality to deliver production-ready ML and infrastructure solutions.

Experience

Real-Time AI Orchestration Engine (The Everything Quiz) Featured Architecture

  • Architected a real-time multiplayer platform using agent-driven development to orchestrate dynamic LLMs.
  • Agentic Workflows: Engineered an async pipeline where LLM agents dynamically generate and serve content, resolving parallel concurrency.
  • Cost-Mitigation Caching: Built a resilient fallback system to control LLM API costs. Implemented a Firebase write-through cache using user-voting heuristics to serve pre-validated data without expensive compute calls.
  • MCP Integration & Event Orchestration: Built custom Model Context Protocol (MCP) servers to act as an asynchronous "Gamemaster". Decoupled the event-trigger logic and successfully utilized self-hosted models to evaluate the tradeoffs of localized compute and data isolation.

Workday - Senior Software Engineer

2023 - Present
  • Architected and led a tiger-team rollout of a Python continuous validation engine across enterprise cluster builds, cutting deployment latency by 2 weeks while establishing organization-wide reliability standards.
  • Led the architectural strategy for infrastructure patching across new builds, successfully advocating against redundant custom tooling to establish sustainable integration with broader organizational standards.
  • Planned and oversaw E2E and integration testing strategy.
  • Championed security best practices within the team, fostering a culture of security awareness.
  • Spearheaded large-scale vulnerability remediation efforts across infrastructure software, drastically reducing the organization's security debt.
  • Brainstormed and implemented improvements to Third Party Library vulnerability processes.

Amazon AWS Dublin - SDE II

2020 - 2023
  • Designed, planned, and delivered Python-based features and infrastructure for core AWS networking automation.
  • Maintained and enhanced the reliability and performance of globally distributed, mission-critical services essential for internal AWS operations.
  • Orchestrated a cross-org migration to deprecate our old APIs/services.
  • Onboarded and mentored new software engineers.
  • Served as the core Security Reviewer for a 30-person organization, accelerating internal launch reviews to under 2 months and scaling security guidance to external engineering orgs across global time zones.
  • Made KPI reports to support departmental goal tracking and data-informed decisions.
  • Led emergency response initiatives for critical situations like service outages and security incidents.
  • Authored and drove cross-organizational High-Level Designs (HLDs), successfully aligning configuration rendering solutions across three distinct engineering teams.

Gorilla Logic - Senior Backend Dev for RMS; Backend Dev for Vaisala

2018 - 2019 (15 months)
  • Dockerized an AWS EC2 microservice distributed system within a strict deadline, ensuring a smooth transition to an on-premise deployment.
  • Implemented new security and user management features, enhancing system security and usability.
  • Worked with geospatial data.
  • Mentored others on Code Interviews topics through workshops and 1-on-1 mocks.

Rivet Logic - Backend Developer for MasterCard, Crafter and others

2017 - 2018 (17 months)
  • Dockerized a single server production environment into multiple containers improving replicability and standardizing production and development environment.
  • Created a Machine Learning Recommendation Engine Proof of Concept demo for an interested client using Amazon Machine Learning.
  • Migration from a PaaS to a IaaS solution for a major worldwide hospitality company.
  • Developed for the knowledge management platform of MasterCard.
  • Helped train newer employees to use in-house technologies.
  • Open Source development of Liferay OSGi modules and Crafter CMS templates.

Google NYC - Software Engineer Intern (Reporting Backend)

2015 Jul - Oct (16 weeks)
  • Developed and e2e tested Unified Reporting, Data Transfer and DoubleClick Search Match Table reports. (DoubleClick)
  • Implemented and ensured that the new report respected privacy, complying with USA laws including COPPA.

Early Career & Foundations

2008 - 2016
  • Roles: Research Assistant (NLP/Data Mining) @ Univ. of Costa Rica; Full-Stack/Backend Dev @ Curridabat Municipality & Green & Energy; Founder @ Crenet Games.
  • Highlights: 2x 1st Place Winner "Símbolo" National Programming Contest; 1st Place Winner Backcountry 24h Hackathon (ML Shopping Assistant); Author: Lexicography NLP Paper (UCR).

Skills

Cloud & Distributed Computing

  • Docker + Kubernetes
  • ArgoCD & Argo Workflows
  • Serverless Computing (Lambda)
  • CI/CD & Continuous Validation
  • Distributed Caching
  • AWS & GCP

Security & Governance

  • Threat Modeling
  • Secure SDLC & Coding Practices
  • Vulnerability Assessment & Mitigation
  • Regulatory Compliance & Isolation

AI & Agentic Orchestration

  • Agent-driven Development
  • Model Context Protocol (MCP) & LLM Orchestration
  • Natural Language Processing

Core Languages & Data

  • Python, Golang, Ruby, Java, C++
  • SQL and NoSQL
  • Hadoop/MapReduce/Spark
  • Operational Reporting & Metrics

Education & Certifications

  • AI Developer on AWS (Expert) - Pluralsight (2024)
  • Adv Argo Workflows & GitOps with Argo CD - Akuity (2024)
  • Data Science and Big Data Analytics 2.0 - Dell Technologies (2019)
  • Masters ABD in Computing and Informatics - Universidad de Costa Rica (2016 - 2019)