Freelance Mobile Engineers in Los AngelesFreelance Mobile 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
84
Followers
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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
1
30
Cover image for Base.club Miami
Base.club Miami
8
217
Cover image for Waking Up
Waking Up
2
125
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
61
Mobile Engineer(3)
Jared Bartlett's avatar
Jared Bartlett
Los Angeles, USA
Senior Mobile Engineer | UX/UI Design| React Native, Flutter
New to Contra
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.
1
210
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
144
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
145
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
153
Mobile Engineer(4)
Mark Shapiro's avatar
Mark Shapiro
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)
0
1
Cover image for LifeBoat: Community Support Tool (Saas)
LifeBoat: Community Support Tool (Saas)
0
2
Cover image for Marketing Director, Showtime Networks Inc (Growth & Retention)
Marketing Director, Showtime Networks Inc (Growth & Retention)
0
3
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Mobile Engineer(1)
Jason Tucker's avatar
Jason Tucker
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
1
0
Cover image for SW-SK8 // Star Wars Tribute Skateboards
SW-SK8 // Star Wars Tribute Skateboards
0
0
Cover image for TREMBLR // Activation Campaign
TREMBLR // Activation Campaign
0
0
Cover image for Shinigami Gear
Shinigami Gear
0
0
Mobile 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 Educational platform for cardiology radiography
Educational platform for cardiology radiography
0
0
Cover image for Pediatric Growth Charts
Pediatric Growth Charts
0
2
Cover image for Evidence-Based Differential Diagnoses
Evidence-Based Differential Diagnoses
0
3
Cover image for DSM-5 Psychiatric Assessment Tools
DSM-5 Psychiatric Assessment Tools
0
2
Mobile Engineer(8)