Freelance Mobile Engineers in Los Angeles

Freelance Mobile Engineers in Los AngelesFreelance Mobile Engineers in Los Angeles

Projects People

Aurelien GERIER

proLos Angeles, USA

Fullstack Engineer | 14+ yrs Shipping React,Next.js,Node,AI

$50k+: Earned

5x: Hired

4.9: Rating

100: Followers

Top

Fullstack Engineer | 14+ yrs Shipping React,Next.js,Node,AI

Cover image for WhatsApp & RCS Integrated Platform for ParaVet.live

WhatsApp & RCS Integrated Platform for ParaVet.live

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36

Cover image for Base.club Miami

Base.club Miami

8

225

Cover image for Waking Up

2

128

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

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265

Mobile Engineer(3)

Los Angeles, USA

Full-Stack AI Architect | Rapid MVPs & Production-Ready Apps

9: Followers

Full-Stack AI Architect | Rapid MVPs & Production-Ready Apps

Cover image for Custom HIIT Architecture: Professional Interval Training App

Custom HIIT Architecture: Professional Interval Training App

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5

Cover image for Stamina — Gamified Habit & Energy Tracking iOS App

Stamina — Gamified Habit & Energy Tracking iOS App

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1

12

Cover image for Mission Control – The Operating System for Autonomous AI Squads

Mission Control – The Operating System for Autonomous AI Squads

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14

Cover image for AI ASO Agent for App Store Optimization

AI ASO Agent for App Store Optimization

2

10

Mobile Engineer(2)

Ridwan Adetoyebi

Los Angeles, USA

Dedicated Web developer, frontend & backend developer

Dedicated Web developer, frontend & backend developer

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

0

10

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

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96

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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11

Cover image for Building Software That Solves Real

Building Software That Solves Real Business Problems One thing I've learned as a Full Stack Developer is that writing code is only a small part of building successful software. The real challenge is understanding the problem before designing the solution. Every web application, mobile app, and SaaS platform I build starts with one question: How can this product make someone's work easier? That's the mindset behind the projects I'm currently building, from AI-powered lead generation tools to real estate platforms, restaurant ordering systems, healthcare management software, and employee management applications. I'm constantly improving my skills in: ✅ Full Stack Development ✅ Web Application Development ✅ Mobile App Development ✅ Frontend Development ✅ Backend Development ✅ API Development ✅ Database Architecture ✅ UI/UX Design ✅ SaaS Development ✅ AI Product Development Every new project teaches me something valuable, and every challenge makes me a better engineer. I'm excited to keep building products that help businesses grow, automate workflows, and deliver better digital experiences. What software are you building right now, or what business problem would you love to solve with technology? #FullStackDeveloper #WebDevelopment #MobileAppDevelopment #FrontendDevelopment #BackendDevelopment #SaaS #AI #SoftwareDevelopment #React #NextJS #NodeJS #TypeScript #UIUX #ProductDevelopment #BuildInPublic #Tech #Developer #Programming #Startup #DigitalProducts #ommabuildathon (https://contra.com/community/topic/ommabuildathon)

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66

Mobile Engineer(2)

Los Angeles, USA

Senior Mobile Engineer | UX/UI Design| React Native, Flutter

Senior Mobile Engineer | UX/UI Design| React Native, Flutter

Cover image for Therapy made by Flutter developer
The

Therapy made by Flutter developer The Therapy app is built by SolidAppMaker with Flutter, FlutterFlow, React Native, Node.js, React, JavaScript, Swift, Java, and Firebase for seamless iOS and Android Mobile App Development. Solidappmaker combines Flutter, OpenAI, and more to push smart apps forward.

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217

Cover image for Date Night Date Night, a social networking app, connects you...

Date Night Date Night, a social networking app, connects you with individuals who share your interests and values. Constructed on a scalable architecture, the app utilizes cutting-edge mobile development technologies, guaranteeing a seamless and responsive user experience across both iOS and Android platforms. It is integrated with Google Maps for location services and features a sophisticated AI matching algorithm. Since its beta version, Date Night has garnered a substantial user base with positive feedback, and we continue to actively enhance and refine the app.

1

151

Cover image for Producer Connect Producer Connect is a farming platform that...

Producer Connect Producer Connect is a farming platform that helps farmers log and track field data including flowmeters, wells, and chemigations. I built the iOS app using SwiftUI and AWS for reliable infrastructure, ensuring secure and scalable performance.

1

154

Cover image for Noble Innovations Noble Innovations is a trading card market...

Noble Innovations Noble Innovations is a trading card marketplace app that helps collectors discover, buy, sell, and complete their card collections. I built the iOS app in SwiftUI and Swift with a Node.js backend, integrating secure transactions and collection tracking.

2

163

Mobile Engineer(4)

Los Angeles, USA

Imaginative Art Director, Photographer

Imaginative Art Director, Photographer

Cover image for Smiletime Player

Smiletime Player

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1

Cover image for Glowbloom Cosmetics Case Study

Glowbloom Cosmetics Case Study

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2

Cover image for Los Angeles Lifestyle Photography

Los Angeles Lifestyle Photography

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2

Cover image for Studio Serendipity Fashion & Beauty Shoot

Studio Serendipity Fashion & Beauty Shoot

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3

Mobile Engineer(1)

Los Angeles, USA

I Help Brands Elevate Their Products & Storytelling

I Help Brands Elevate Their Products & Storytelling

Cover image for LoveBank: Connection App (Consumer Social, CRM, Productivity)

LoveBank: Connection App (Consumer Social, CRM, Productivity)

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4

Cover image for LifeBoat: Community Support Tool (Saas)

LifeBoat: Community Support Tool (Saas)

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2

Cover image for Marketing Director, Showtime Networks Inc (Growth & Retention)

Marketing Director, Showtime Networks Inc (Growth & Retention)

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5

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Mobile Engineer(1)

Los Angeles, USA

Marketing expert building top brands via strategy & design

New to Contra

Marketing expert building top brands via strategy & design

Cover image for Volkswagen - Joyride App

Volkswagen - Joyride App

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2

Cover image for SW-SK8 // Star Wars Tribute Skateboards

SW-SK8 // Star Wars Tribute Skateboards

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3

Cover image for TREMBLR // Activation Campaign

TREMBLR // Activation Campaign

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3

Cover image for Shinigami Gear

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2

Mobile Engineer(1)

Beverly Hills, USA

App, Web, AI Development, Data Science - Tech & HealthTech

App, Web, AI Development, Data Science - Tech & HealthTech

Cover image for Educational platform for cardiology radiography

Educational platform for cardiology radiography

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1

Cover image for Daily Health & Wellness Tracking

Daily Health & Wellness Tracking

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4

Cover image for BMI and Body Fat Calculators

BMI and Body Fat Calculators

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4

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6

Mobile Engineer(8)