Freelance Mobile Engineers in San FranciscoFreelance Mobile Engineers in San Francisco
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Gerald S's avatar
Gerald S
San Francisco, USA
Android Engineer (7+ years of experience)
$1k+
Earned
1x
Hired
3
Followers
Android Engineer (7+ years of experience)
Cover image for In my previous role at a startup, I was the sole Android Eng...
In my previous role at a startup, I was the sole Android Engineer responsible for the native mobile apps. I had the opportunity to create a new Android app. It was an app that allowed warehouse workers to scan barcodes on packages to create an electronic chain of custody. The client who requested this app was happy with the results. I exceeded expectations by delivering the app ahead of schedule (2 weeks vs. 1 month). The necessary features were in place, and the app was user-friendly. https://play.google.com/store/apps/details?id=ai.beans.isp.scan
0
95
Cover image for Android App - PokeViewer
Android App - PokeViewer
0
7
Cover image for https://suno.com/s/4uljwsdGoTEIMJ8U For this New Year Suno A...
https://suno.com/s/4uljwsdGoTEIMJ8U For this New Year Suno AI song, I was inspired by the New York ball drop (reference image (https://image.newyork.co.uk/wp-content/uploads/2023/10/New-Years-Eve-in-New-York.jpg)). Hope you have a Happy New Year 2026! Card created in Lovart.
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Cover image for I recently watched a video
I recently watched a video of someone going on a trip to see the Northern Lights. At the end of the video, the person showed a timelapse of the Northern Lights, and I was in awe. Given the holiday season, I was curious to see what a Christmas tree under the Northern Lights would look like. I was able to find the following image (https://media.istockphoto.com/id/2224224036/photo/aurora-borealis-northern-lights-over-christmas-tree-strong-aurora-storm-yellowknife-northwest.jpg?s=612x612&w=0&k=20&c=1folij9hCKe3GGvXlHLu171g2uR_zUl52KZmNsGufPI=). I used this image as inspiration to create a festive EDM song on Suno: https://suno.com/s/y8UK3O8PNWftC0E9 With these themes in mind, I had Lovart generate a holiday card (second image in post). From me to you, Merry Christmas & Happy Holidays Hope you enjoy the song 🧑‍🎄
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208
Mobile Engineer(2)
Farrokh Rostami Kia's avatar
Farrokh Rostami Kia
Walnut Creek, USA
full-stack developer & UI/UX designer
full-stack developer & UI/UX designer
Cover image for MILOUPAW, PROFESSIONAL AND RELIABLE PET CARE SERVICES
MILOUPAW, PROFESSIONAL AND RELIABLE PET CARE SERVICES
0
20
Cover image for CONFIDENTIAL PROJECT
CONFIDENTIAL PROJECT
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14
Cover image for IRAN NATIONAL ASSEMBLY OF JURISTS
IRAN NATIONAL ASSEMBLY OF JURISTS
0
24
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Mobile Engineer(1)
Canberk Varli's avatar
Canberk Varli
Berkeley, USA
Creative Software Engineer
9
Followers
Creative Software Engineer
Cover image for fullcircle - Wellness Community App
fullcircle - Wellness Community App
0
50
Cover image for ActorRise - Find your audition
ActorRise - Find your audition monologues in seconds
0
69
Cover image for Customized ERC-20 Token
Customized ERC-20 Token
0
32
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Mobile Engineer(1)
Brian Delaney's avatar
Brian Delaney
San Francisco, USA
Product designer & iOS engineer for polished apps
New to Contra
Product designer & iOS engineer for polished apps
Cover image for Storyluxe is a social design
Storyluxe is a social design app that made polished, editorial story templates accessible to millions of creators. I worked across product design, native iOS implementation, template and editing workflows, subscriptions, growth, QA, App Store presentation, and release support. The project shows my ability to ship consumer creative tools at scale: translating a strong visual brand into an intuitive mobile editor, refining monetization and onboarding, and supporting a product used by millions.
1
57
Cover image for Runrate: The new way to budget
Runrate: The new way to budget
0
2
Cover image for I built Runrate's design guide
I built Runrate's design guide in HTML by describing it to Codex in natural language instead of starting in Figma. It still covers what I would normally organize in a Figma library: - semantic color tokens and themes - typography, spacing, shape, elevation, icons, and motion - accessibility and responsive behavior - reusable components with states, usage guidance, anti-patterns, and live examples - product patterns for the ledger, accounts, forms, navigation, and risk or recovery states - guidance for translating the same intent between Web and iOS The difference is that these are not static frames. The tokens are implementation contracts. The components can be used in the browser. The patterns include real constraints, interaction behavior, and accessibility. Production Web remains the source of truth. Then I point the project's AGENTS.md file at the guide. The instruction is essentially this: Before creating or changing a customer-facing Runrate surface, consult the design guide. Use Foundations for tokens, hierarchy, and voice. Use Components for behavior and states. Use Patterns for composition. Reuse the existing system before extending it. That applies to new product features, email templates, marketing creative, and anything else that should match the guide. So the design system is not only a library.... it becomes part of the context used to generate the work. https://myrunrate.com/design What do you think about this? And are you making your design system readable by agents? Curious what other people are doing.
3
134
Cover image for LUXE Studio is a photo
LUXE Studio is a photo and video editing app built around focused tools instead of one crowded editor. I worked across product design, native iOS implementation, subscriptions, QA, localization, App Store presentation, and release support. The project shows my end-to-end mobile product workflow: shaping the app experience, shipping polished editing features, refining launch assets, and supporting the product through release.
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159
Mobile Engineer(1)
Bilal Rasheed's avatar
Bilal Rasheed
San Francisco, USA
Android & iOS App Developer (React Native)
Android & iOS App Developer (React Native)
Cover image for Peasomy is a React Native
Peasomy is a React Native property operations and booking platform that unifies property discovery, listings, bookings, payments, and in-app communication. It provides role-based tools for Owners, Agencies, Cleaners, and Security to manage properties, track bookings, revenue, and operations. By centralizing workflows, Peasomy reduces operational friction, improves booking conversion, and helps property businesses scale efficiently.
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117
Cover image for Built a Multi-Role EdTech LMS (500K+ Users, 47 Countries) us...
Built a Multi-Role EdTech LMS (500K+ Users, 47 Countries) using React Native Designed and developed a multi-role Learning Management System (LMS) for a global EdTech platform, serving 500K+ students across 47 countries. The platform supports students, guardians, and center administrators with real-time progress tracking, adaptive learning workflows, and offline-first functionality. Built using React Native with a single codebase, reducing development time while ensuring scalability, performance, and seamless cross-platform experience.
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93
Cover image for MangoShop Mobile —React Native E‑Commerce
MangoShop Mobile —React Native E‑Commerce Platform
0
72
Cover image for Investor Point –Full-Stack FinTech Investment
Investor Point –Full-Stack FinTech Investment Plan
0
69
Mobile Engineer(1)
Slava Kornilov's avatar
Slava Kornilov
San Francisco, USA
Mobile/Web Design, Branding
56
Followers
Mobile/Web Design, Branding
Cover image for AI Music OS
AI Music OS
0
101
Cover image for Alarm
Alarm
0
107
Cover image for Air OS
Air OS
3
49
Cover image for Geration Vibe Code Dashboard
Geration Vibe Code Dashboard
0
64
Mobile Engineer(3)
Derek W's avatar
Derek W
Berkeley, USA
Full Stack Dev & Data Scientist - UC Berkeley Grad
Full Stack Dev & Data Scientist - UC Berkeley Grad
Cover image for Campuswave
Campuswave
0
3
Cover image for Secure File Storage and Sharing
Secure File Storage and Sharing
0
10
Cover image for COVID-19 Vaccine and Mobility Analysis
COVID-19 Vaccine and Mobility Analysis
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4
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Mobile Engineer(1)