Open to opportunities

Sergio Aldo Lechuga Ensastiga

@sergioaldolechugaens

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Results-driven software engineer specializing in C++, Python, and embedded systems.

Mexico

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What I'm looking for

I seek roles where I can build reliable embedded and fiscal software, apply automation and AI tooling, mentor teams, and work in collaborative, delivery-focused environments with clear regulatory and quality standards.

I am a results-driven software engineer with an M.Sc. in Instrumentation and Control and deep experience in C++, Python, VHDL, and embedded systems. I have developed fiscal products, internal tooling, and automation for Windows, Linux, and embedded environments while ensuring regulatory compliance.

At Thomson Reuters I delivered ~29 user stories per month (about 61% above team average), built prototypes using internal AI tools to generate compliant C++ code, and designed shared utilities that unblocked 45 stalled user stories, reducing resolution time by ~70% during peak season.

I have a strong foundation in control systems and embedded design from my master's thesis and freelance projects, published research on fuzzy-logic controllers, and experience implementing Kanban and mentoring teammates to improve delivery, quality, and team capability.

Experience

Work history, roles, and key accomplishments

Software Engineer

Thomson Reuters

Dec 2021 - Dec 2025 (4 years)

Developed U.S. fiscal product features in C++ for UltraTax, delivering ~29 user stories/month (≈61% above team average) and unblocked 45 stalled stories by designing a shared utility, reducing resolution time ~70%.

C++Python Unit Testing Legacy C98 CI CD Pair Programming Tax Compliance

Master's Researcher

Universidad Autónoma De Querétaro

Dec 2019 - Apr 2022 (2 years 4 months)

Implemented a fuzzy-logic controller for a cycloergometer on STM32F401 in C/C++, published research demonstrating biosignal-feedbacked real-time speed control.

Real Time Systems

Software Engineer I

Toshiba

May 2021 - Nov 2021 (6 months)

Built POS applications in Python and C++ for retail, collaborated in agile sprints, and mentored junior developers to improve code quality and accelerate onboarding.

Python C++Agile Mentoring Transaction Processing Inventory Management

Embedded Systems Developer

Freelance

Aug 2019 - Feb 2021 (1 year 6 months)

Developed fuzzy motor controller and 20th-order low-pass filter on STM32/Basys3 using C++, Python, and VHDL and designed a web-based parking automation system with payment simulation.

C++Python Web Backend

Embedded Systems Engineer

ENINetworks

Jun 2017 - Jul 2018 (1 year 1 month)

Managed network operations for ~20 connections, maintaining 99%+ uptime and improving reliability ~20% via routing optimizations and coordinated infrastructure upgrades.

Network Operations TCP IP Routing Troubleshooting Infrastructure Monitoring SLA Management Documentation

Education

Degrees, certifications, and relevant coursework

Universidad Autónoma de Querétaro

Master of Science, Instrumentation and Control

2019 - 2022

Master of Science in Instrumentation and Control; implemented a fuzzy-logic controller for a biosignal-feedbacked cycloergometer and published related research.