Israel Santana

Backend Engineer

New York, New York, United States7 yrs experience

AI Enabled

Key Highlights

Transformed challenges into strengths through resilience.
Built a production-grade video processing system.
Contributed to a successful property management MVP.

Stackforce AI infers this person is a Fullstack Software Engineer with expertise in SaaS applications.

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Skills

Core Skills

JavaSpring BootReact.jsTypescript

Other Skills

PostgreSQLSupabaseFfmpegSpring BatchREST APIsGoogle GeminiSQLGitFigma (Software)Tailwind CSSReactFigmaJiraFlywayZod

About

From homeless to software engineer. I'm a software developer who believes your greatest challenges become your greatest strengths. My journey from homelessness to building full-stack applications has given me the grit and resilience to tackle any problem thrown my way. I'm open to connecting with fellow developers and innovators. Let's talk about how we can build something amazing together. Fluent in both Spanish and English. Current Tech Stack: Languages: Java, JavaScript (ES6+), TypeScript, SQL. Frontend: React, Next.js, Tailwind CSS, HTML5, CSS3. Backend: Spring Boot, Node.js, Express.js, PostgreSQL, MongoDB. Tools: Git, GitHub, Stripe, Figma, VS Code, MCP.

Experience

7 yrs

Total Experience

1 yr 11 mos

Average Tenure

Current Experience

Archetype dynamics, inc.

Backend Developer

Sep 2025 – Present · 8 mos · Texas, United States · Remote

Architected and delivered a production-grade asynchronous video processing system for a public speaking coaching platform, enabling AI-driven analysis of user presentations with real-time scoring and feedback.
AI Integration & Cost Optimization
Implemented AI-powered content validation to filter invalid uploads (non-presentation videos, inappropriate content) before analysis, reducing unnecessary Gemini API costs and processing overhead
Integrated Gemini AI to analyze delivery, content, and engagement metrics; engineered structured prompts that extract 15+ granular coaching signals (pace, filler words, eye contact) with accuracy scores
Designed intelligent video segmentation: files under 1.7GB analyzed directly; larger files automatically chunked into 60-second segments using FFmpeg for reliable downstream processing
Spring Batch Architecture
Built a multi-step batch processing pipeline using Spring Batch to orchestrate video ingestion, validation, AI analysis, score calculation, and cleanup for files up to 5GB
Implemented automatic retry logic with exponential backoff (max 3 attempts) and comprehensive error handling across 8 processing steps
Designed job listeners to update analysis status atomically, preventing race conditions in concurrent processing scenarios
Performance Engineering & Debugging
Refactored upload controller from byte-array processing to streaming architecture, eliminating OutOfMemoryErrors on large (2GB+) file uploads
Debugged a JPA persistence issue where calculated scores were overwritten with NULL values post-job completion; replaced entity-level saves with targeted JPQL updates (updateStatusOnly, updateJobExecutionId), preserving analytical integrity
Optimized Supabase storage operations: upgraded from 50MB single-request limit to 5GB streaming uploads by leveraging Pro tier capabilities
Managed PostgreSQL schema with custom JPQL queries for atomic updates, preventing stale data overwrites in async job flows

JavaSpring BootPostgreSQLReact.jsTypeScriptSupabase+5

Dallas software developers group

Frontend Developer

Jan 2025 – Jun 2025 · 5 mos · New York, United States · Remote

Contributed as a Frontend Developer in a 6-week, agile apprenticeship program with a team of junior engineers under the mentorship of two experienced software engineers. Collaborated to build "Super," a fully functional MVP of a property management portal.
Project: Super - A centralized digital platform for residents to manage their living experience, from lease administration to smart home controls.
Key Contributions & Accomplishments:
Engineered core frontend components for resident access control, including a remote lock/unlock feature for their apartment doors using React and TypeScript.
Developed a comprehensive guest management system, enabling tenants to issue temporary digital keys for building access and reserve guest parking permits.
Implemented the tenant-facing complaint reporting module, allowing residents to submit, categorize, and add detailed notes to service requests.
Architected the user interface for the smart package locker system, providing tenants with real-time notifications and locker details upon package receipt.
Collaborated effectively within an agile team, using Jira for ticket management, Git/GitHub for version control, and Figma for translating UI/UX designs into functional code.
Presented a live video demonstration of the final project to an audience of over 300 peers and industry professionals.
Technology Stack: React, TypeScript, Tailwind CSS, Figma, Jira, Git, GitHub, Eraser io, Loom, Discord.

React.jsTypeScriptGitFigma (Software)Tailwind CSSPostgreSQL

Preferred home care of new york

Para Staffing Coordinator

Nov 2022 – Feb 2024 · 1 yr 3 mos · Brooklyn, New York, United States · On-site

Maintaining assigned patient schedules (100-150 patients) creating master schedules for new and existing patients in the scheduling system to create paraprofessional schedules.
Responsible for coordinating and resolving daily conflicts and changes.
Making all changes and adding notes daily to schedules for canceled, refused services, changed assignments, missed visits, discharged patients and approved overtime as they occur.

Abeco management

Facilities Manager

Jan 2021 – Nov 2022 · 1 yr 10 mos · Brooklyn, New York, United States · On-site

Schedule and supervise maintenance repair work for over 20 buildings by handling plumbing, electric and carpentry issues.
Responsible for hiring and managing general contractors including processing payrolls over $350,000.
Assist with other administrative duties including managing high call volumes from tenants and prospective contractors.

Law offices of tenzin wangyal, pllc

Paralegal

May 2018 – Jul 2019 · 1 yr 2 mos · 4015, 29th Street, Long Island City

Journalist kingdom

Administrator & Journalist

Dec 2016 – Jan 2020 · 3 yrs 1 mo

Super happy healthy kids

Onsite Director, Public Relations & Internship Program Coordinator.

Sep 2016 – May 2018 · 1 yr 8 mos

Super Happy Healthy Kids is a non-profit organization. We encourage kids and their families to say kind words and do kind acts via Karate, Yoga, Meditation, Arts, Music, Healthy Food, Positive Thinking and more. Our mission is to engage kids with fun and valuable activities that pass on core values of kindness, leadership and motivation. We want our children to create a future with strength and compassion.Our enrichment team's mission is to make sure each child feels special, gains leadership and social skills, all while maintaining inner peace.

The james jay dudley luce foundation

Journalism, Events, Internship Program Coordinator & Social Media Senior Intern.

Jun 2016 – Jun 2019 · 3 yrs · 540 Main Street #418 New York, N.Y. 10044 USA

The Mission of the James Jay Dudley Luce Foundation, Inc. is to support young global leadership impacting positive social change and the NGOs that support them, particularly in the fields of the Arts, Education, and Orphan Care. Support includes microgrants and ‘spotlighting’ through social media and our the Foundation's Stewardship Report on Connecting Goodness, which features original and aggregated content.

The stewardship report

Administrator, Researching Nonprofit Leaders, Events & Creating Profiles.

Jun 2016 – Jun 2019 · 3 yrs

New York, N.Y. The Stewardship Report on Connecting Goodness (website/Facebook), in cooperation with the J. Luce Foundation (website/Facebook), Orphans International Worldwide (website/Facebook), and the New York Global Leaders Lions Club (Facebook), maintains this calendar of events for New York City. All events are open to the public for free/fee and take place in NYC unless otherwise noted.