I'm Thiago, a software engineer with 10+ years of experiencer, building and operating production distributed systems. Architecting scalable APIs and leading feature deployment in remote-first environments is a daily habit. AI tools are part to my workflow and I believe that agentic engineering is about preserving the professional quality bar that existed before LLMs. I thrive in remote-first environments, care about craft, and strive to preserve the professional quality bar that existed before the latest generation of AI tools. I enjoy mentoring teammates, running user interviews, and shaping end-to-end solutions that cover web, mobile, and data flows.

Thiago Bueno dos Santos

I'm Thiago, a software engineer with 10+ years of experiencer, building and operating production distributed systems. Architecting scalable APIs and leading feature deployment in remote-first environments is a daily habit. AI tools are part to my workflow and I believe that agentic engineering is about preserving the professional quality bar that existed before LLMs. I thrive in remote-first environments, care about craft, and strive to preserve the professional quality bar that existed before the latest generation of AI tools. I enjoy mentoring teammates, running user interviews, and shaping end-to-end solutions that cover web, mobile, and data flows.

Available to hire

I’m Thiago, a software engineer with 10+ years of experiencer, building and operating production distributed systems. Architecting scalable APIs and leading feature deployment in remote-first environments is a daily habit. AI tools are part to my workflow and I believe that agentic engineering is about preserving the professional quality bar that existed before LLMs.

I thrive in remote-first environments, care about craft, and strive to preserve the professional quality bar that existed before the latest generation of AI tools. I enjoy mentoring teammates, running user interviews, and shaping end-to-end solutions that cover web, mobile, and data flows.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
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Language

Portuguese
Fluent
English
Advanced

Work Experience

Senior Product Engineer at Caldeira Esthalo
March 1, 2022 - Present
Architected streaming infrastructure for a health care LMS with progressive loading and multi-format fallbacks; supported 1k+ concurrent learners during live sessions; built a platform covering e-commerce and travel products. Built and led delivery of a multi-tenant wine inventory platform serving 2k+ wineries, yielding WebSocket bottlenecks under live production load and cutting server costs by 32%. Drove incremental merge of two UI systems during an acquisition while maintaining shipping schedules. Ran remote user interviews across 1,000+ city hall deployments, built jurisdiction-aware filtering into core workflows, and standardized Storybook patterns with over 80% Jest test coverage.
Senior Software Engineer at GOVBR · Government Management Systems
November 1, 2017 - February 1, 2022
Replaced timing-out REST endpoints with a GraphQL and Apollo layer over Cassandra; added React Suspense for incremental data streaming, reducing perceived load from 8s to under 2s and cutting frozen-screen tickets by 60%. Formalized TypeScript standards across squads, migrating from JavaScript and documenting component patterns, reducing regressions on Kubernetes deployments and shortening ramp time for new engineers. Ran remote user interviews across 1,000+ city hall deployments, built jurisdiction-aware filtering into core workflows, and standardized Storybook patterns with Jest test coverage.
HR & IT Solutions Architect at STARH – HR Management Systems
September 1, 2015 - November 1, 2017
Stabilized a payroll system for a 2,000-employee client by refactoring a 4,500-line legacy controller into small services with batch processing, cutting run time from 45 to 8 minutes and preventing client churn. Led architecture and delivery of a full benefits module rebuilt with AngularJS, Express and MongoDB, shipping over 30 reusable directives and a dynamic rules builder that non-technical HR managers could adapt. Conducted remote interviews across 1,000+ city hall deployments and improved test coverage.
Senior Software Engineer at Caldeira Esthalo
March 1, 2022 - Present
Architected streaming infrastructure for a healthcare LMS with progressive loading and multi-format fallbacks; supported 1k+ concurrent learners during live sessions; built a platform that also covers e-commerce and travel products.
Senior Software Engineer at STARH - HR Management Systems
September 1, 2015 - November 1, 2017
Stabilized payroll system for a 2,000-employee client by refactoring a 4,500-line legacy controller into smaller services with batch processing, reducing runtime from 45 minutes to 8 minutes and preventing client churn. Led architecture and delivery of a full benefits module using AngularJS, Express and MongoDB; shipped over 30 reusable directives and a dynamic rules builder; conducted remote user interviews across 1,000+ city hall deployments and standardized patterns in Storybook with ~80% Jest test coverage.
Senior Software Engineer at GOVBR - Government Management Systems
November 1, 2017 - February 1, 2022
Replaced timing-out REST endpoints with a GraphQL and Apollo layer over Cassandra; added React Suspense for incremental data streaming; cut perceived load from 8s to under 2s and reduced frozen-screen ticks by 60%. Led migration of core services to GraphQL and modern frontend patterns.

Education

Front-End System Design: Advanced UI, Performance & Architecture at Front-End Masters
January 11, 2030 - October 1, 2024
CS50 Certificate: Introduction to the Intellectual Enterprises of Computer Science at Harvard University (CS50)
March 1, 2016 - May 14, 2026
Bachelor of Arts in Social Communication – Advertising and Marketing at ESPM (University of Advertising and Marketing), Porto Alegre, Brazil
January 11, 2030 - December 1, 2014

Qualifications

Front-End System Design: Advanced UI, Performance & Architecture
October 1, 2024 - May 14, 2026
CS50 Certificate: Introduction to the Intellectual Enterprises of Computer Science
March 1, 2016 - May 14, 2026
Bachelor of Arts in Social Communication – Advertising and Marketing
January 11, 2030 - December 1, 2014

Industry Experience

Software & Internet, Healthcare, Education, Government, Professional Services