Freelance Fullstack Engineers in Los AngelesFreelance Fullstack Engineers in Los Angeles
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Aurelien GERIER's avatar
Aurelien GERIER
proLos Angeles, USA
Fullstack Engineer | 14+ yrs Shipping React,Next.js,Node,AI
$50k+
Earned
5x
Hired
4.9
Rating
110
Followers
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Fullstack Engineer | 14+ yrs Shipping React,Next.js,Node,AI
Cover image for Led delivery of a cloud-native
Led delivery of a cloud-native K-12 student wellness platform that helps counselors monitor wellbeing, surface at-risk students, and act early—balancing product velocity with FERPA/COPPA-aware design and multi-tenant isolation (API RBAC, PostgreSQL RLS, district-scoped analytics). → Owned technical direction and delivery rhythm across a TypeScript monorepo (pnpm/Turbo): backend API, web app, shared packages, DB migrations, CI/CD gates, and staged deploys to GCP (e.g. Cloud Run), aligning engineering work with roadmap and release risk. → Orchestrated an AI assistant for counselors on Google Vertex AI (Gemini): system prompts, safety settings for K-12, function-calling tool design, multi-round tool loops, and strict separation so UI widgets render from verified tool results—not model hallucinations—with tracing/feedback hooks (e.g. Langfuse) for quality and auditability. → Drove access-control and compliance posture for sensitive student data: role/permission middleware, tenant-scoped queries, and defense-in-depth database policies—documentation and evidence suitable for enterprise security reviews (e.g. SOC 2–style narratives). → Partnered on product and program management: phased feature rollout, PR/branch discipline, and clear ownership of scope vs. risk so pilot schools could onboard without compromising data boundaries. → Shaped integrations and platform boundaries: Firebase auth, Neon PostgreSQL + Drizzle ORM, real-time patterns, BigQuery analytics isolation, and operational practices (testing, lint, type-check) that keep the stack maintainable at scale. → Established a disciplined, AI-accelerated delivery model—not ad-hoc prompting: Cursor rules and Claude skills/agents for repeatable workflows; Husky + lint/type-check/test gates; GitHub Actions CI/CD; Cursor Cloud Agents for automated PR review; and daily monitoring of E2E, coverage, and critical issues—owning AI-orchestrated implementation while enforcing accuracy, consistency, and observability
0
360
Cover image for Breakjobs.ai
Breakjobs.ai
0
68
Cover image for WhatsApp & RCS Integrated Platform for ParaVet.live
WhatsApp & RCS Integrated Platform for ParaVet.live
1
43
Cover image for Scalable Digital Platform for Cognitive Testing
Scalable Digital Platform for Cognitive Testing
0
32
Fullstack Engineer(13)
Johnny Ha's avatar
Johnny Ha
Alhambra, USA
Senior Full-Stack Engineer | Web Development | AI Automation
$5k+
Earned
1x
Hired
5.0
Rating
19
Followers
Senior Full-Stack Engineer | Web Development | AI Automation
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/
1
2
151
Cover image for EVOKE - Mindfulness & Reflection Web Experience
$6K+ earned
EVOKE - Mindfulness & Reflection Web Experience
4
19
Cover image for Luxury Jewelry E-Commerce Website – Gemsparx Front-End & Ful...
Luxury Jewelry E-Commerce Website – Gemsparx Front-End & Full-Stack Developer (React & Node.js) Gemsparx is a luxury jewelry marketing and e-commerce website designed to showcase diamonds, fine jewelry, and custom design services with a high-end user experience. I developed this project using React for a fast, responsive front end and Node.js for backend functionality. The focus was on creating a visually elegant, conversion-friendly interface while maintaining performance, scalability, and clean code architecture. The website features structured product categories, promotional sections, custom design workflows, and a modern UI optimized for both desktop and mobile users. This project demonstrates my ability to build premium marketing websites that align with luxury brand aesthetics and business goals.
5
23
423
Cover image for MSPTerms – SaaS Platform for Document Management & MSP Opera...
MSPTerms – SaaS Platform for Document Management & MSP Operations http://mspterms.com/ I developed a scalable SaaS web application for MSPTerms, a document management and business strategy platform designed for managed service providers (MSPs). The project involved building a fast, secure, and intuitive user interface using Nuxt.js, including authentication flows, dashboard layouts, and responsive landing pages. I focused on performance optimization, clean UI/UX, and seamless user experience across devices. The result is a modern, production-ready SaaS platform that enables MSPs to manage documents, streamline operations, and support business growth with a professional, easy-to-use system.
4
14
306
Fullstack Engineer(8)
Raphael McDonnell's avatar
Raphael McDonnell
proSanta Monica, USA
UX/UI Designer Specializing in Mobile Apps & SaaS Dashboards
UX/UI Designer Specializing in Mobile Apps & SaaS Dashboards
Cover image for AVID: Carbon Investing
AVID: Carbon Investing
1
9
Cover image for On-Demand Health and Wellness Mobile App
On-Demand Health and Wellness Mobile App
0
12
Cover image for Dental Practice Automation System
Dental Practice Automation System
1
10
Cover image for Mafia III Game Release Website For 2K
Mafia III Game Release Website For 2K
0
9
Fullstack Engineer(2)
Daniel Walasinski's avatar
Daniel Walasinski
Los Angeles, USA
Full-stack dev of 5 web-apps with UX & marketing expertise
Full-stack dev of 5 web-apps with UX & marketing expertise
Cover image for Web App Directory Development for WalasinskiApps
Web App Directory Development for WalasinskiApps
0
4
Cover image for Development of VocabularyBuilder.org
Development of VocabularyBuilder.org
0
10
Cover image for qrCodeLab.net: Customizable QR Code Generator
qrCodeLab.net: Customizable QR Code Generator
0
7
Cover image for Development of ClassroomTimer.net for Educators
Development of ClassroomTimer.net for Educators
0
7
Fullstack Engineer(2)
Doug Wood's avatar
Doug Wood
Los Angeles, USA
Custom software dev for high-traffic applications
Custom software dev for high-traffic applications
Cover image for Outsourced Chief Investment Officer Due Diligence Platform
Outsourced Chief Investment Officer Due Diligence Platform
0
16
Cover image for Bot Butcher: context aware website spam filter for developers
Bot Butcher: context aware website spam filter for developers
0
26
Cover image for Test & Go Vending Machines
Test & Go Vending Machines
0
32
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Fullstack Engineer(2)
Mike Dunlop's avatar
Mike Dunlop
Los Angeles, USA
Experienced Fullstack Web Developer - microsites, platforms.
Experienced Fullstack Web Developer - microsites, platforms.
Cover image for HBO - The Peacemaker Interactive Trailer Microsite
HBO - The Peacemaker Interactive Trailer Microsite
1
11
Cover image for Known Agency Website
Known Agency Website
0
6
Cover image for House of the Dragon - Official Microsites
House of the Dragon - Official Microsites
0
10
Cover image for Call of Duty - WorldWide Release Microsite
Call of Duty - WorldWide Release Microsite
0
9
Fullstack Engineer(4)