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Diego Millán

Diego Millán

Software Engineer

Bogotá, CO
English, Spanish

Background


About

About

Results-driven Software Engineer with 14+ years of experience specialized in cloud-native solutions, scalable architectures, and data engineering. Adept at designing and optimizing high-performance distributed systems in AWS environments, with deep expertise in ETL pipelines, DevOps, and microservices. Passionate about data-driven decision-making, automation, and business intelligence. Proven track record of leading cross-functional teams, delivering complex projects on time, and mentoring engineers in best practices for software development, DevOps, and cloud computing.

Work Experience

Work Experience

  • Senior Python & Cloud Software Engineer (Tech Lead), Proxet

    Oct, 2024 - Present

    Technical Expertise: AWS (Lambda, RDS Aurora, Redshift), Zero-ETL Integration, Database Migration, Python, Node.js, Cloud Architecture, Data Pipeline Design, Performance Optimization, Cross-Version Database Management, ETL/ELT Processes.

    • Architected and deployed cloud-native solutions using AWS, significantly improving scalability and reducing operational costs.

    • Engineered a critical PostgreSQL database upgrade that enabled zero-ETL integration between operational systems and data warehouse, eliminating data latency for real-time analytics with minimal business disruption, while maintaining 99.9% system availability throughout the transition.

    • Orchestrated internal development and consulting engineering teams to deliver technical solutions aligned with critical client requirements, establishing project governance frameworks that balanced technical excellence with business constraints while maintaining 95% client satisfaction.

    • Collaborated with cross-functional teams to align technical implementation with business analytics requirements, enabling data-driven decision-making.

    • Designed optimized data pipeline architecture that significantly reduced data transfer costs while improving data freshness for business intelligence applications.

    • Led the design and implementation of high-throughput ETL pipelines, processing terabytes of data for advanced analytics and reporting, enabling data-driven product optimization.

    • Designed and optimized SQL & NoSQL database architectures, improving query performance and data retrieval speeds.

    • Automated CI/CD pipelines using CircleCI & Bitbucket, reducing deployment time by 50%.

  • Senior Python & Cloud Software Engineer, Proxet

    Apr, 2023 - Sep, 20241 year 5 months

    Technical Expertise: Python, AWS (Lambda, CDK, CloudFormation), Docker, CircleCI, Bitbucket, ETL Pipeline Design, Microservices Architecture, SQL/NoSQL Databases, Infrastructure as Code, Serverless Framework.

    • Architected cloud-native data infrastructure using AWS Lambda and serverless technologies that transformed pet behavior data into actionable insights for smart pet products.

    • Established CI/CD excellence using CircleCI and Bitbucket that accelerated feature delivery cycles by 50% for consumer-facing applications.

    • Engineered fault-tolerant microservices architecture using Docker and AWS Lambda that scaled seamlessly to support 300,000+ connected devices.

    • Implemented Infrastructure as Code (IaC) using AWS CDK and CloudFormation that reduced cloud infrastructure deployment time.

    • Developed hybrid data storage solutions combining SQL and NoSQL databases that optimized both transactional pet care data and unstructured behavioral analytics.

  • Senior Consultant in Data and Software Engineering, Clevertech

    Apr, 2022 - Jan, 20239 months

    Technical Expertise: AWS (CDK, Lambda, S3), Python, TypeScript, Node.js, PostgreSQL, GraphQL, Serverless Architecture, ETL Pipeline Design, Event-Driven Microservices, Data Modeling.

    • Architected cloud-native data infrastructure that streamlined CPG deductions management, reducing processing time by 40% through strategic implementation of AWS CDK and serverless technologies.

    • Led development of cross-platform data integration solutions that automated extraction from diverse sources, enabling comprehensive financial analysis for CPG brands.

    • Designed resilient event-driven microservices architecture that maintained 99.9% uptime for mission-critical deductions processing workflows.

    • Optimized PostgreSQL databases and ETL pipelines, increasing system throughput by 30% while reducing operational costs.

    • Engineered automated text extraction capabilities using Python and AWS Lambda that recovered millions in disputed deductions annually.

    • Collaborated with business stakeholders to translate complex requirements into robust data models that ensured financial accuracy across the platform.

  • Lead Software Engineer, Edunext

    Feb, 2018 - Apr, 20224 years 2 months

    Achieved a high level of client satisfaction and significant company recognition by leading a software consulting team to run, maintain and extend an online learning platform.

    Technical Expertise: Microservices Architecture, REST API Design, Open Source Integration, CI/CD (GitHub Actions, Jenkins), Database Optimization, Docker, Kubernetes, ELK Stack, Python, JavaScript.

    • Architected distributed microservices ecosystem for customizable online education platform, leveraging open source technologies to enable flexible content delivery and scale with 200% user growth.

    • Engineered public-facing APIs that enabled seamless integration with major education content providers, expanding course offerings by 40% and driving revenue growth.

    • Led comprehensive tech stack modernization initiative, migrating legacy systems to open source alternatives while maintaining 99.9% platform availability.

    • Implemented robust CI/CD pipelines using GitHub Actions and Jenkins, reducing deployment time by 75% and enabling rapid feature iteration.

    • Optimized MySQL database performance through query tuning and indexing strategies, decreasing page load times by 60% and enhancing student experience.

    • Mentored engineering team on microservices architecture, API design, and open source contribution, establishing technical excellence across the organization.

  • Software Engineer, Edunext

    Apr, 2016 - Jan, 20181 year 9 months

    • Collaborated with IT and security teams to ensure compliance with data privacy and security regulations.

    • Designed and implemented data models to support business reporting and analytics.

    • Led the integration of Salesforce CRM into the e-commerce sales process, resulting in improved customer satisfaction and streamlined workflows.

    • Integrated third party payment processors to support ecommerce goals.

    • Developed custom integrations using RESTful APIs and business process events, ensuring data accuracy, near real-time data consistency across systems.

    • Implemented software unit tests and integration tests.

  • Software Engineer, TuMotorizado

    Sep, 2013 - Mar, 20162 years 6 months

    • Developed, deployed and extended business backend using Django as the main platform framework.

    • Designed, developed, maintained and deployed a same-day delivery platform.

    • Designed and developed RESTful APIs to support core business processes.

  • IT Developer, 3Web Vision

    Feb, 2011 - Feb, 20132 years

    • Developed Android native mobile applications.

    • Migrated SQL Databases.

Skills

Skills

  • Frontend

    HTML / JSX

    Javascript / Typescript

    React

    Redux / Apollo

  • Backend & Databases

    Node / Typescript

    Python

    Postgres

    Redis

    MongoDB

    DynamoDB

    AWS Glue

    MySQL

  • Devops

    AWS

    Heroku

    GCP

    AWS CDK / CloudFormation SAM

    Ansible

  • Testing & Linting

    Testing

    ESLint

    Ruff

  • AI Technology

    OpenAI API

    Anthropic Claude

  • Version Control

    GitHub

    Git

  • Serverless Architecture

    AWS Lambda

    Efficient Resource Management

    On-Demand Scaling

  • Containerization

    Docker

    CI/CD

    kubernetes

    GitHub Actions

Education

Education

  • Data Analytics & Business Intelligence (Machine Learning), Master of Science, Pontificia Universidad Javeriana (Bogotá, Colombia)

    Jan, 2017 - Nov, 2019

  • Software Engineering, Master of Science, Pontificia Universidad Javeriana (Bogotá, Colombia)

    Jan, 2016 - Jul, 2018

  • Computer Engineering (Computer Science), Bachelor of Science, Universidad Simón Bolívar (Caracas, Venezuela)

    Sep, 2003 - Jul, 2010