Freelance Data Engineers in Los AngelesFreelance Data Engineers in Los Angeles
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Yichong Shen's avatar
Yichong Shen
Alhambra, USA
Full-stack engineer building reliable web apps & automation
New to Contra
Full-stack engineer building reliable web apps & automation
Cover image for Built a job-search workflow that
Built a job-search workflow that turns scattered job listings into a structured review pipeline. The system collects job descriptions, removes duplicates and irrelevant roles, evaluates opportunities against configurable preferences, and organizes promising positions for human review. It also supports role-specific resume matching and generates traceable summaries so application decisions remain consistent and explainable. Built with Python, structured data processing, browser automation, and AI-assisted evaluation.
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48
Cover image for Built a tournament data automation
Built a tournament data automation system for an organizer managing approximately 60 events per month and records for 260+ players. The system imports tournament CSV files from Google Drive, validates and transforms the data, recalculates configurable standings, and publishes searchable leaderboards and event history. I designed and implemented the complete workflow using Google Apps Script, Google Sheets, Drive, JavaScript, and CSV ETL.
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55
Cover image for Designed and built my developer
Designed and built my developer portfolio to present production engineering experience, deployed products, and tailored resume tracks in one responsive experience. The site highlights full-stack applications, workflow automation, backend systems, and interactive projects, with direct access to live products and role-specific resumes. Built with TypeScript and modern web tooling, then deployed to Cloudflare.
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45
Cover image for Built GARater, a responsive deck-building
Built GARater, a responsive deck-building and analytics platform for Grand Archive players. I designed and shipped the product end to end—from the card API integration and interactive deck builder to multidimensional scoring, visual analytics, Google OAuth, cloud synchronization, and production deployment. Built with JavaScript, Cloudflare Workers, D1, and REST APIs. The product reached approximately 1,180 unique visitors in its first 30 days. https://garater.com
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61
Data Engineer(2)
Johnny Ha's avatar
Johnny Ha
Alhambra, USA
Senior Full-Stack Engineer | Web Development | AI Automation
$5k+
Earned
1x
Hired
5.0
Rating
21
Followers
Senior Full-Stack Engineer | Web Development | AI Automation
Cover image for PostgreSQL Database Architecture & Performance Tuning
PostgreSQL Database Architecture & Performance Tuning
2
138
Cover image for Evoke - Project completed successfully
Evoke - Project completed successfully and got ⭐⭐⭐⭐⭐ review🚀 Overview EVOKE is a mindfulness-focused digital experience designed to create a calm, distraction-free space for reflection and presence. Problem Most digital platforms are built for speed and engagement, which can feel overwhelming. The goal was to design a space that encourages stillness instead of stimulation. Approach I focused on creating a minimal and immersive interface using soft visuals, intentional spacing, and slow interactions to guide users into a reflective state. Solution Designed a clean, distraction-free UI Built immersive entry and reflection flows Used calming imagery and typography to shape the experience Developed smooth transitions to support a sense of presence Tech & Tools Web development, frontend engineering, UX/UI design Outcome The final product delivers a unique digital experience that prioritizes calmness and intentional interaction, standing out from traditional high-stimulation platforms. 👉 https://www.evoke-space.com/
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191
Cover image for EVOKE - Mindfulness & Reflection Web Experience
$6K+ earned
EVOKE - Mindfulness & Reflection Web Experience
4
21
Cover image for Building Websites & CMS Solutions I’m
Building Websites & CMS Solutions I’m currently working on modern websites and CMS-based projects using no-code and low-code platforms. I build and customize projects with: • Wix & Wix Studio (https://www.wix.com/)• WordPress (https://wordpress.com/)• Webflow (https://webflow.com/)• Bubble.io (http://Bubble.io) I help businesses and startups create fast, responsive, and scalable websites, from landing pages to full CMS and web apps. Open to new projects and collaborations.
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313
Data Engineer(1)
Jeremy Cull 's avatar
Jeremy Cull
Santa Monica, USA
Fadeline — AIOps event packets (batch exports only)
Fadeline — AIOps event packets (batch exports only)
Cover image for Async Intake + Export Checklist
Async Intake + Export Checklist + Output Spec
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168
Cover image for Data Handling Confidentiality
Data Handling Confidentiality
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176
Cover image for Optimize Your Operations with Fadeline V1 Factory Runbook
Fadeline V1 Factory Runbook
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196
Cover image for Fadeline Productized Service SOW
Fadeline Productized Service SOW
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191
Data Engineer(1)
Marc Precilla's avatar
Marc Precilla
proLos Angeles, USA
Sharetribe™ & marketplace product expert | Fractional CTO
Sharetribe™ & marketplace product expert | Fractional CTO
Cover image for CTO and Engineer | TMS and Logistics Ecosystem
CTO and Engineer | TMS and Logistics Ecosystem
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4
Cover image for Rapid Site Build
Rapid Site Build
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8
Cover image for Sharetribe Marketplace Customization
Sharetribe Marketplace Customization
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5
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Data Engineer(1)
David Han's avatar
David Han
Los Angeles, USA
Unlocking Insights with Data
Unlocking Insights with Data
Cover image for Google Analytics: Set up, Data - ETL
Google Analytics: Set up, Data - ETL
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8
Cover image for Data Analysis: Ad-Hoc Reporting Delivery
Data Analysis: Ad-Hoc Reporting Delivery
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8
Cover image for Data Engineering Analytics Project
Data Engineering Analytics Project
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4
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Data Engineer(3)
Veer Gadodia's avatar
Veer Gadodia
Los Angeles, USA
MIT Grad and Full-Stack Web/AI engineer.
7
Followers
MIT Grad and Full-Stack Web/AI engineer.
Cover image for Breakthrough Jira Project Management App
Breakthrough Jira Project Management App
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13
Cover image for Inflight – AI-Powered Platform for Better Product Development
Inflight – AI-Powered Platform for Better Product Development
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34
Cover image for Airchat Website and iOS app
Airchat Website and iOS app
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11
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Data Engineer(1)
PulseLoop LLC's avatar
PulseLoop LLC
Beverly Hills, USA
App, Web, AI Development, Data Science - Tech & HealthTech
App, Web, AI Development, Data Science - Tech & HealthTech
Cover image for Flu Vaccination Compliance Dashboard
Flu Vaccination Compliance Dashboard
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36
Cover image for HR Analytics Dashboard (Tableau)
HR Analytics Dashboard (Tableau)
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44
Cover image for Emergency Room Operations Dashboard
Emergency Room Operations Dashboard
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39
Cover image for Educational platform for cardiology radiography
Educational platform for cardiology radiography
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5
Data Engineer(2)