Senior backend roles (Node.js/TypeScript first, Python welcome) at product companies that hire international contractors. Based in Brazil (UTC-3), full overlap with US time zones, 4-5h with Central Europe; I work via Deel or direct B2B. I want to own services end to end: API design, event-driven systems, reliability and cloud. Fully remote only.
Looking for a job
Matheus Mol
@matheusmol
I build resilient backend platforms, real-time systems, and AI-powered medical products.
BrazilWhat I'm looking for
I've built backend systems for B3's Desenrola Brasil program, Iara Health's medical speech-to-text platform, and CorpusMap, a production medical SaaS I co-founded. My work spans national-scale financial integrations, real-time transcription reliability, and end-to-end product delivery.
At Iara Health, I lead a ~10-person engineering team and eliminated recurring dictation loss in the live STT pipeline. At CorpusMap, I own the software end to end—from NestJS, Next.js, and Three.js to AWS infrastructure, disaster recovery, AI citation validation, and cross-platform releases.
Experience
Work history, roles, and key accomplishments
IH
Current
Tech Lead / Senior Software Engineer
Iara Health
Apr 2025 - Present (1 year 6 months)
Tech lead of a ~10-person engineering team for a medical speech-to-text and AI report generation platform. Eliminated recurring dictation loss in the live STT pipeline, led a security-driven modernization of the Django/Node backend, and designed a Web Components architecture.
CO
Current
Founder & Lead Engineer
CorpusMap
Jan 2023 - Present (3 years 9 months)
Co-founded a medical imaging SaaS for dermatology/aesthetics, tracking skin lesions on a 3D body model. Architected and shipped a multi-tenant platform end to end, including AI-assisted analysis, PDF reports, and LGPD compliance, with production customers since 2023.
Served as a Python/Node.js subject-matter expert on Scale's LLM training programs, evaluating pre-release frontier models and producing reference solutions for training signal. Wrote structured error reports and ran comparative evaluations to guide model improvements.
Software Engineer
B3 (Brazilian Stock Exchange)
Jan 2022 - Apr 2024 (2 years 3 months)
Backend engineer on Desenrola Brasil and internal platforms, owning the Itaú integration and building Node.js APIs and Python automations. Improved boleto generation performance by 12x and fixed a Chromium memory leak.
IS
Software Engineer
Info Sistemas
Mar 2020 - Jan 2022 (1 year 10 months)
Built a real-time vehicle-tracking backend for Fiat's dealership network using RabbitMQ and SQL Server, and migrated a legacy Delphi fleet-management system to Node.js, reducing query times by 25%.
Education
Degrees, certifications, and relevant coursework
FU
FIVAR University
Bachelor of Science, Information Systems
2018 - 2022
Pursued a Bachelor of Science in Information Systems, completing the degree in 2022.
Tech stack
Software and tools used professionally
Availability
Looking for a job
Location
BrazilAuthorized to work in
Salary expectations
72k-90k USD
Social media
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