Eleonora Lester

Senior Software Engineer

eleonora.lester@gmail.com github.com/elstr

Summary

Senior software engineer with 8+ years of experience. Worn many hats throughout my career, from individual contributor, engineering lead to CTO.

Work Experience

Software Engineer and Manager - DoubleHQ
2024 - 2026
  • Node.js API development and event-driven serverless architectures (AWS Lambda)
  • AWS infrastructure management and cost optimization
  • Led DX initiatives: built CI/CD workflows to improve team development velocity
  • Define roadmap, iterate product strategy, plan sprints, define and refine PRDs
  • Led a team of 8 engineers (4 full-stack engineers, 2 infra, 2 QAs)
Co-Founder - HeyAltas (Acquired by Remote)
2021 - 2024
  • Architecture and tech stack definition, crafted our MVP, scaled product
  • Built integration services connecting the platform with Argentina IRS
  • Monolith-to-microservices migration on AWS
  • SQL and NoSQL database management
  • Event-driven serverless architecture design (AWS Lambda)
  • AWS infrastructure management and cost optimization
  • Involved in recruiting, assembling, and leading our engineering and product teams
Technical Leader - Smalls
2020 - 2021
  • Feature design, analysis, and implementation
  • SQL and NoSQL database management
  • In charge of integrating with Stripe for checkout and Shipstation for deliveries
  • Node.js API development and event-driven serverless architectures (AWS Lambda)
Sr. Software Engineer - LiveStories
2018 - 2020
  • Built a dashboard to allow clients map and organize data. Made graphics and visualizations from the ingested data
  • High-performance API design and development
Sr. Software Engineer - Shiftgig
2017 - 2018
  • Owned the full product implementation of user dashboards and journeys
  • Mentoring junior engineers
Software Engineer - Arg Government
2014 - 2017
  • Owned the full-cycle development of government portals from inception to launch
  • Backend services development with Node.js

Skills

Education

AWS Certified - Solutions Architect Associate, Cloud Practitioner
2021 - 2022

Languages

English (C2 Native)

Spanish (C2 Native)