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Timezone overlap

9h overlap with US East · Argentina

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English level

Upper Intermediate

B2

Self-assessed via CEFR ladder

(es)
Other languages:Spanish (native)es:Native

Skills & tools

Skills

Backend & ArchitectureQuality Assurance & TestingFullstack DevelopmentRelational Data ModelingAPI Design & IntegrationInnovation

Tools

JavaSpring BootHibernateMavenREST APIsNode.jsOOPPostgreSQLReactJSJUnit5PythonFastAPIReactTSJPATypeScriptPytestGit

About

Passarelli, a Fullstack Developer, excels at building robust system architectures and tackling complex business logic. In recent projects, they engineered a strict Pydantic validation layer over the Google GenAI API, guaranteeing 100% valid, hallucination-free JSON outputs from LLMs. They also prevented business logic leakage and drastically improved testability by strictly isolating domain rules into dedicated 'Gestor' components. Their experience also includes developing concurrent TCP servers in C++ during academic projects, demonstrating a foundational understanding of how systems work under the hood. Currently, they are an advanced Informatics Engineering student at Universidad Nacional de La Matanza. Beyond coding, they enjoy teaching object-oriented programming as a private tutor, finding it an excellent way to master fundamentals and communicate technical concepts clearly. This passion for designing solid, maintainable systems extends to their weekend role as a D&D Dungeon Master, where they balance complex mechanics and intricate problem-solving.

Highlights

  • Guaranteed 100% valid, hallucination-free JSON outputs from LLMs by engineering a strict Pydantic validation layer over the Google GenAI API.
  • Prevented business logic leakage and drastically improved testability by strictly isolating domain rules into dedicated 'Gestor' components.

Work preferences

Job type
Consulting, Freelance / Independent, Full-time, Part-time
Company size / type
Early-stage startup (0-20), Growth-stage startup (21-200), Large/multinational (200+)
Culture
Early-stage startup (0-20), Growth-stage startup (21-200), Independent
Industries
Information Technology
Hours
8 hours overlap (9 AM - 5 PM EST)
Available from
Jul 2026
Notice period
1 week
Engagement
Open to contract / freelance

Salary context

Benchmarks for SMB non-tech role · Junior (< 3 yrs).

India equivalent
$800/mo
This candidate
$800/mo
US local hire
$3,800/mo
Save ~$36,000/yr vs. equivalent US hire.

US figures from BLS OEWS 2024 + Glassdoor; India figures from US SMB offshore vendor pricing. Adjusted for the candidate's seniority.

Work experience

  1. Fullstack Developer · Independent Project
    Jul 2026 — Present

    - : Designed a scalable REST API using Spring Boot and PostgreSQL, implementing a polymorphic model via JSON metadata and Gestor (Manager) classes to process dynamic assessment formats without altering the relational schema. - Developed a robust…

  2. Fullstack Developer · Independent Project
    Apr 2026 — Jun 2026

    - Engineered an analytical evaluation engine integrating the Google GenAI API. Applied advanced prompt engineering techniques and enforced strict JSON data typing using Pydantic schemas to guarantee deterministic, hallucination-free outputs. - Built…

  3. C++ developer · Academic Project
    May 2025 — Jul 2025

    - Designed a robust Client-Server architecture in C++ utilizing POSIX Sockets (TCP/IP) for real-time, bidirectional communication. - Implemented concurrent execution using std::thread, enabling the server to manage multiple independent game sessions…

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Education

  1. Estudios de grado · Universidad Nacional de La Matanza
    2021—2028
    AR· Ingeniería en Informática
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