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
101
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
277
Cover image for Breakjobs.ai
Breakjobs.ai
0
62
Cover image for WhatsApp & RCS Integrated Platform for ParaVet.live
WhatsApp & RCS Integrated Platform for ParaVet.live
1
37
Cover image for Scalable Digital Platform for Cognitive Testing
Scalable Digital Platform for Cognitive Testing
0
30
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
18
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
125
Cover image for EVOKE - Mindfulness & Reflection Web Experience
$6K+ earned
EVOKE - Mindfulness & Reflection Web Experience
4
16
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
395
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
285
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
8
Cover image for On-Demand Health and Wellness Mobile App
On-Demand Health and Wellness Mobile App
0
10
Cover image for Dental Practice Automation System
Dental Practice Automation System
1
8
Cover image for Mafia III Game Release Website For 2K
Mafia III Game Release Website For 2K
0
8
Fullstack Engineer(2)
Ridwan Adetoyebi's avatar
Ridwan Adetoyebi
Los Angeles, USA
Dedicated Web developer, frontend & backend developer
Dedicated Web developer, frontend & backend developer
Cover image for Discover Qualified Leads Efficiently with LeadRadar Platform
LeadRadar is an AI powered lead generation platform I designed and developed to simplify how businesses, startups, agencies, and sales professionals discover and manage qualified leads. The platform centralizes the lead generation process into a modern, intuitive dashboard where users can search for prospects, organize contacts, and streamline their sales workflow. The Challenge Many businesses spend countless hours manually searching for potential clients across multiple websites and platforms. This fragmented approach leads to inconsistent data, inefficient workflows, and lost sales opportunities. The goal was to build a platform that could reduce manual research, improve lead organization, and provide a seamless experience for managing prospects. The Solution I built LeadRadar as a scalable SaaS application with a clean user experience and a robust backend architecture. The platform enables users to: Discover business leads from online sources Organize prospects in one dashboard Search and filter leads efficiently Track and manage potential customers Improve productivity with an intuitive workflow Access the platform across desktop and mobile devices My Role I was responsible for the complete product lifecycle, including: Product Strategy UI/UX Design Frontend Development Backend Development Database Design API Development Authentication Performance Optimization Deployment Planning Technologies React Next.js TypeScript Node.js Supabase PostgreSQL Tailwind CSS Outcome LeadRadar demonstrates my ability to design and develop scalable SaaS products that solve real business challenges. The project showcases expertise in full stack development, product design, API architecture, database design, and creating user-focused software with a strong emphasis on performance and scalability. Skills (3)
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42
Cover image for One of the biggest lessons
One of the biggest lessons I've learned as a Full Stack Developer is that building products challenges you in ways client work can't. Every product requires you to think beyond frontend development and backend development. You have to understand user experience (UI/UX), database architecture, API development, authentication, performance optimization, scalability, and solving real business problems. That's exactly what I've been doing with products web applications and mobile applications I'm actively developing. Every project helps me improve my skills in: ✅ Full Stack Development ✅ Web Application Development ✅ Mobile App Development ✅ React & Next.js Development ✅ Backend Development ✅ API Integration ✅ Database Design ✅ SaaS Development ✅ AI Product Development ✅ UI/UX Design ✅ Software Architecture I believe the best way to grow as a developer is to build products that people actually use. Every feature, every bug, and every deployment is another opportunity to become a better engineer. What are you building right now? I'd love to see what you're working on. #FullStackDeveloper #WebDevelopment #MobileAppDevelopment #FrontendDevelopment #BackendDevelopment #ReactJS #NextJS #NodeJS #TypeScript #JavaScript #SoftwareDevelopment #SaaS #AI #ProductDevelopment #BuildInPublic #Startup #Programming #Developer #Tech #Coding
3
115
Cover image for I'm excited to share something
I'm excited to share something I've been building behind the scenes. For the past few weeks, I've been working on LeadRadar, a tool designed to help freelancers, agencies, and businesses spend less time searching for leads and more time closing them. The idea is simple. Instead of manually jumping between directories, search engines, and social platforms, LeadRadar scans the web to discover potential leads in one place. I'm focusing on features like: • Finding businesses that match your target niche • Collecting publicly available contact information • Helping users organize and manage their prospects • Saving hours of manual research This project has also been a great learning experience in product design, user experience, and solving a real problem that I face as a freelancer. I'm still building, testing, and refining the product, and I'd love to hear from the community. If you're someone who spends time looking for clients online, what's your biggest challenge when it comes to lead generation? Your feedback could help shape LeadRadar into something genuinely useful.
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4
215
Cover image for Building Unlimited: A Smarter Way
Building Unlimited: A Smarter Way to Manage Teams I've been working on Unlimited, a modern team tracking and employee management application designed to help businesses manage their workforce more efficiently. The goal is simple: make it easier for companies to track team activities, monitor productivity, manage tasks, and keep everyone connected through a clean, intuitive platform. Features I'm building: ✅ Team Activity Tracking ✅ Employee Management Dashboard ✅ Task & Project Management ✅ Daily Reports ✅ Attendance Tracking ✅ Performance Analytics ✅ Role-Based Access Control ✅ Secure Authentication ✅ Mobile-Friendly Interface ✅ Real-Time Updates ✅ Responsive Web Application ✅ Scalable Backend Architecture As a Full Stack Developer, I enjoy building web applications, mobile apps, and SaaS platforms that solve real business problems and improve how teams collaborate. Every product I build is an opportunity to learn, refine my skills, and create software that delivers measurable value. I'm excited to continue developing Unlimited and adding more features that help businesses manage their teams with confidence. What feature would you love to see in a modern employee management or team tracking platform? #FullStackDeveloper #TeamManagement #EmployeeManagement #WorkforceManagement #ProjectManagement #TaskManagement #SaaS #WebDevelopment #MobileAppDevelopment #React #NextJS #NodeJS #TypeScript #Dashboard #BusinessSoftware #SoftwareDevelopment #BuildInPublic #Startup #ProductDevelopment #Tech
1
41
Fullstack Engineer(3)
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
3
Cover image for Development of VocabularyBuilder.org
Development of VocabularyBuilder.org
0
6
Cover image for qrCodeLab.net: Customizable QR Code Generator
qrCodeLab.net: Customizable QR Code Generator
0
5
Cover image for Development of ClassroomTimer.net for Educators
Development of ClassroomTimer.net for Educators
0
6
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
13
Cover image for Bot Butcher: context aware website spam filter for developers
Bot Butcher: context aware website spam filter for developers
0
22
Cover image for Test & Go Vending Machines
Test & Go Vending Machines
0
30
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Fullstack Engineer(2)