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Leo Mendoza

Software Engineering Intern
San Jose, CA, United States

Professional Summary

Software Engineering Intern who builds reliable, user-focused products across the stack and turns ambiguous requirements into shipped features. Strong foundation in Python, TypeScript, and cloud services, with hands-on experience improving API performance, test coverage, and developer workflows in collaborative teams.

Employment History

Software Engineering Intern
Peninsula Cloud Labs · San Jose, CA
Jun, 2025 · Present
Built FastAPI services and TypeScript/React dashboards for a multi-tenant observability platform, shipping 6 production features used by 40+ customer teams. Cut median API latency 32% by adding PostgreSQL indexes, Redis caching, and query instrumentation; improved p95 response time from 820ms to 560ms. Raised backend test coverage from 61% to 86% with 120+ pytest cases and contract tests, reducing escaped defects by 25% across two releases. Automated Docker-based preview environments in GitHub Actions, shortening QA setup from 45 minutes to under 10 minutes per branch.
Student Developer / Research Assistant
San Jose State University - Applied Systems Lab · San Jose, CA
May, 2024 · May, 2025
Developed a Python data pipeline that synchronized 18,000+ sensor records into a research dashboard, cutting nightly processing time from 3 hours to 38 minutes. Implemented React components and REST endpoints for experiment tracking, reducing duplicate data entry 40% for a 12-person lab. Wrote reproducible notebooks and onboarding documentation; presented weekly demos and mentored two classmates on Git and test-driven development.
Campus Helpdesk Assistant & Hackathon Lead
SJSU Information Technology Services · San Jose, CA
Aug, 2022 · May, 2024
Resolved 35+ weekly hardware and software tickets for students and faculty, maintaining a 96% same-day resolution rate during peak semesters. Led a 5-person student team for an annual campus hackathon with 120 participants; built a check-in portal that cut registration queues 50%. Balanced 15 hours per week of support work with a full course load, documenting fixes that reduced repeat tickets 18% and earned a supervisor commendation.

Education

B.S. Computer Science, in progress
San Jose State University · San Jose, CA
Aug, 2021 · May, 2026
Relevant coursework: Data Structures & Algorithms, Operating Systems, Database Systems, Computer Networks, Software Engineering, Web Application Development. GPA: 3.72 / 4.00; Dean's Scholar (2023-2025).

Skills

Analytical Thinking Skills
Project Management Skills
Ability to Learn Quickly