Freelance Mobile Engineers in United StatesFreelance Mobile Engineers in United States
ProjectsPeople
Singular Innovation's avatar
Singular Innovation
proUnited States
Co-innovate smart apps with AI, strategy, and agility
$25k+
Earned
3x
Hired
5.0
Rating
91
Followers
FLUTTERFLOW_AGENCY_EXPERT

Agency

FLUTTERFLOW_CERTIFIED_EXPERT

Certified

Co-innovate smart apps with AI, strategy, and agility
Cover image for Burger King: Food delivery app
Burger King: Food delivery app
1
45
Cover image for Forge - Mobile CRM for High-Value Sales Professionals
Forge - Mobile CRM for High-Value Sales Professionals
1
34
Cover image for Charli Charging – EV Charging & Payments App
Charli Charging – EV Charging & Payments App
1
57
Cover image for Cannabolt – Bitcoin-Powered Payments for the Cannabis Industry
Cannabolt – Bitcoin-Powered Payments for the Cannabis Industry
16
259
Mobile Engineer(5)
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
98
Followers
TOP_INDEPENDENT

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
1
33
Cover image for Base.club Miami
Base.club Miami
8
222
Cover image for Waking Up
Waking Up
2
127
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
200
Mobile Engineer(3)
Rulian Estivalletti's avatar
Rulian Estivalletti
proPembroke, USA
Software Engineer - Web/Mobile, I drive AI, not vise versa.
$1k+
Earned
1x
Hired
5.0
Rating
5
Followers
Software Engineer - Web/Mobile, I drive AI, not vise versa.
Cover image for Framework Native A/B Testing
Framework Native A/B Testing
0
13
Cover image for Better Online Dating.
Better Online Dating.
0
26
Cover image for Bugjar is an app I
Bugjar is an app I created as an alternative to session recording services that pretty much steal all your user's data. They capture full dom - which includes content, which means people who use these services are just sending all their private user's data to these 3rd parties. So I made something that made 4 promises 1 - It never recorded anything until the user asked it to 2 - It didn't capture any data unless the user allowed it to 3 - Even when it's allowed to record data, it never captured any PII and 4 - All redactions are on the user side, never hits the server.
0
28
Cover image for Wonderful Software (https://wonderful.so) is my
Wonderful Software (https://wonderful.so) is my portfolio piece. It's where I talk about my process, my portfolio, and my thought on questions people ask.
1
2
129
Mobile Engineer(2)
Shekh Al Raihan's avatar
Shekh Al Raihan
proNew York, USA
Senior Product Designer with 8+ experience
1x
Hired
4.4
Rating
28
Followers
Senior Product Designer with 8+ experience
Cover image for Windora | Renewable Energy Company
Windora | Renewable Energy Company
0
1
Cover image for Athleticon | Fitness and Health Training App
Athleticon | Fitness and Health Training App
0
2
Cover image for Crewly: AI-Powered Gig Marketplace UIUX Case Study
Crewly: AI-Powered Gig Marketplace UIUX Case Study
0
1
Cover image for Revolutionize Shipping with Carvex: Transforming Global Logi...
Concept Work: Carvex Logistics Website Carvex: The Future of Logistics Overview Carvex emerges as the vanguard of the shipping industry, transforming how goods traverse the globe. Gone are the days of sluggish deliveries and opaque tracking; Carvex is setting a new standard in logistics with cutting-edge technology and an unwavering commitment to customer satisfaction. Carvex isn't just a shipping platform; it's a revolution in logistics that seamlessly integrates advanced algorithms with real-time data analytics to deliver unparalleled accuracy and efficiency. Every shipment is carefully monitored from origin to destination, ensuring timely arrivals and complete visibility at every stage of the journey. Design Philosophy The vision behind Carvex was to simplify the complexity of global logistics through a clean, sophisticated, and user-centric experience. Logistics platforms often overwhelm users with excessive data and operational complexity. Our goal was to transform that complexity into clarity. The design embraces a minimal and modern visual language, allowing users to focus on the information that matters most. Clear hierarchy, intuitive navigation, and thoughtful spacing help create an experience that feels effortless, whether managing a single shipment or overseeing an entire logistics operation. Every interaction was designed with efficiency in mind. Real-time tracking, shipment management, and operational insights are presented in a way that feels accessible and easy to understand, reducing friction and enabling faster decision-making. By balancing simplicity with powerful functionality, Carvex delivers a premium digital experience that inspires trust, enhances productivity, and reflects the innovation driving the future of logistics.
2
147
Mobile Engineer(3)
NerdHeadz 's avatar
NerdHeadz
proSheridan, USA
AI-Powered Custom Software Development Agency
5.0
Rating
9
Followers
BUBBLE_EXPERT

expert

AI-Powered Custom Software Development Agency
Cover image for Trucking88 — Transport Management SaaS
Trucking88 — Transport Management SaaS Platform NerdHeadz developed a comprehensive transport management SaaS platform for Trucking88, available as both web and mobile applications. The system incorporates CRM and ERP tools to streamline fleet management, order processing, truck repairs, and payroll management. Key features include dispatch management, driver assignment, load tracking, invoicing with QuickBooks integration, and a tiered membership system that empowers small trucking businesses with access to core resources. The platform was built on Bubble.io (http://Bubble.io) with FlutterFlow for the mobile app. Technologies: Bubble.io (http://Bubble.io), FlutterFlow, QuickBooks API, Stripe Services Provided: CustomSoftware Development, Mobile Development, UX/UI Design Results: Full SaaS platform with CRM/ERP capabilities deployed Mobile app for drivers and dispatchers QuickBooks integration for automated accounting Tiered membership system for scalable business modelWebsite Link:
1
108
Cover image for Trivvs - No Code Real Estate Investment App
Trivvs - No Code Real Estate Investment App
0
17
Cover image for AI Call Center — Automated
AI Call Center — Automated Sales Calls Platform NerdHeadz built an AI-powered desktop application that automates outbound sales calls. The platform uses Bland.ai (http://Bland.ai) forAI voice agents, handles real-time call transcription, and provides campaign management tools for sales teams. Key features include automated call routing, phone number provisioning, conversation transcription, and a comprehensive admin dashboard for managing sales campaigns. The system was designed to scale with growing call volumes while reducing the workload on human agents. Delivered in 1.5 months. Technologies: Bland.ai (http://Bland.ai), AI Voice, Real-time Transcription, Desktop App Services Provided: AI Development, UX/UI Design, Custom Software Development Results: Automated outbound sales call system deployed Real-time call transcription and campaign management Phone provisioning and AI voice agent integration Delivered within 1.5-month deadline
1
118
Cover image for NerdHeadz AI — Project Estimation
NerdHeadz AI — Project Estimation Tool NerdHeadz developed an internal AI-powered estimation tool to automate project scoping and cost estimation. The tool uses OpenAI's language model combined with historical project data to analyze client requirements and generate comprehensive project breakdowns including timelines, tech stack recommendations, and cost estimates. A chat interface allows clients to describe their project, and the system delivers polished PDF reports in under 5 minutes. The tool continuously improves its accuracy by learning from new project data, helping NerdHeadz respond to leads faster and with greater precision. Technologies: OpenAI API, Python, PDF Generation, Chat Interface Services Provided: AI Development, Custom Software Development Results: Project estimation reports generated in under 5 minutes (was hours manually) Self-learning AI that improves accuracy with each new project Automated PDF report delivery to clients Reduced estimation workload by 90%
1
90
Mobile Engineer(2)
Anton Zalis's avatar
Anton Zalis
proFort Lauderdale, USA
Design and development studio - web, mobile, AI.
5.0
Rating
26
Followers
Design and development studio - web, mobile, AI.
Cover image for For the uninitiated, NRFI is
For the uninitiated, NRFI is the "espresso shot" of sports betting. You’re betting that both teams will record three outs in the first inning without anyone crossing home plate. Six outs. Zero runs. Total chaos. In an age of TikTok-length attention spans, waiting three hours for a game to end feels like a lifetime. NRFI gives you a result before your DoorDash even arrives. The Market: Micro-betting is currently the fastest-growing segment in the $15B+ US sports betting industry. The Demographic: It captures the "second screen" generation that wants high-frequency engagement. The Problem: Until now, "researching" an NRFI bet meant having 14 browser tabs open, refreshing a weather map, and praying to a Twitter tipster named @BaseballBilly69. That’s why we built NRFI Zone. 🚀
1
131
Cover image for Fantabase - Mobile App Design & Development
Fantabase - Mobile App Design & Development
0
19
Cover image for TA2: AI-Driven Tattoo Visualization Mobile App
TA2: AI-Driven Tattoo Visualization Mobile App
2
12
Cover image for AI-Powered Storytelling App for Kids - Design and Development
AI-Powered Storytelling App for Kids - Design and Development
1
19
Mobile Engineer(6)