Mobile app development in Los Angeles
Creator apps live and die on the upload. A Los Angeles creator records on a phone, posts from a car or a set, and expects the video to go up while they move on, not a progress bar that restarts when the signal drops. Then the platform has to check that content before anyone else sees it, without making the creator wait.
We build these apps in React Native with background uploads that resume after interruptions and go straight to storage through presigned URLs. Moderation runs off a queue rather than in the upload path, the same design we use in our own app, Amour, where the sender sees their post immediately and others see it once it clears. We have lived with the trade-offs of that design, and we will explain them before you choose it.
Los Angeles buys software for businesses that make things people watch, wear, listen to and fly. Entertainment and media are the obvious ones: studios, streaming services, post-production houses, music companies, games and the creator economy that grew up around them. Alongside them sit consumer brands selling direct to customers online, a fast-growing aerospace cluster around El Segundo and the South Bay, and the logistics trade that runs through the ports of Los Angeles and Long Beach. The buyer might be a creator with an audience, a studio's technology team or the operations lead at a launch company.
Each brings a different system. Media is heavy: video has to be ingested, transcoded, stored and served, storage and egress costs grow faster than anything else on the bill, and rights and territory windows decide who may watch what, where and when. Consumer brands live with launch-day spikes, when one post or one drop sends a surge of traffic in minutes. Creator platforms need moderation that keeps the product feeling fast. The South Bay's aerospace companies grow quickly and need the commercial software around the engineering: hiring and supplier portals, fan and merchandise stores, and the scheduling and operations tools a company outgrows spreadsheets for.
Built In puts the average base salary for a software engineer in Los Angeles at around $147,000, and studios, streamers and the large technology campuses in the city compete for the same people. Much of the work here also runs to a fixed date: a premiere, a new season, a product drop, a launch window. When the date is set and the team is short, a senior engineer who can start in days on a defined piece of work is often the quickest way to hit it.
We work from Bengaluru with four hours of live overlap every working day, placed across your morning in Los Angeles. Stand-ups, reviews and launch planning happen in that window, with the engineer who writes the code. Everything decided outside it goes into your repository, your tracker and the runbooks we write as we go, so each morning starts with a clear record of what moved.
We fit best around a fixed date: a store before a drop, a media pipeline before a new season, a creator app before launch, or commercial tools for a fast-growing South Bay company. Senior capacity starts in days, usually with a fixed-price two-week piece. Agencies can bring us in white-label, under their own name.
Four ways this arrives.
And crashes on the ones your users own. We add crash reporting with readable stack traces, find the handful of devices and OS versions causing most of the crashes, and fix those before anyone touches a feature.
Signing keys on a laptop, a manual build, store notes written at midnight. We move builds and signing into CI, add over-the-air updates for JavaScript-only fixes, and write down exactly how a release goes out.
A Bluetooth device, a vendor SDK, a camera pipeline, a background task the OS keeps killing. We write the native module in Swift and Kotlin, expose a small typed interface to React Native, and keep it isolated so upgrades stay possible.
Forms that vanish, actions that send twice. We decide what must work offline, keep it on the device, queue writes with idempotency keys the backend understands, and show the user plainly what is still waiting to sync.
Our own React Native app on Android, with retraction built into the client because moderation can pull a message after it has been sent.
Read the write-up →Asked by Los Angeles teams.
How do you work with teams in Los Angeles?+
We are in Bengaluru, with four hours of live overlap every working day placed across your Los Angeles morning. That window holds stand-ups, design reviews and launch planning, and you talk to the engineer who writes the code. We work in your Slack, your GitHub and your Linear, so progress shows up where your team already looks. Work finished outside the window is written up there too, ready when your day starts.
Do you build for media and entertainment companies?+
Yes. We build ingest and transcoding pipelines, rights and territory windows held as data, review platforms with expiring, watermarked links for outside collaborators, and archive search that finds a line of dialogue by its timecode. For labels and creator networks, we build the pipelines that turn platform statements into accurate payouts. Each piece is scoped to ship before the premiere, season or release date it is meant for.
How does your rate compare to hiring in Los Angeles?+
Built In puts the average base salary for a software engineer in Los Angeles at about $147,000, before equity, benefits and recruiting fees. Our published rate is $35 an hour, with a $5,000 minimum. You skip the months of recruiting and the employment overhead, and we can start within days. A fixed-price two-week piece at $2,800 is the usual beginning, so you judge us on what ships.
Can you work white-label for a Los Angeles agency?+
Yes. Many Los Angeles creative and digital agencies win the brief and then need engineering behind it. We build under your name: your client sees your agency and your process, and we work inside your Slack, tracker and repositories. We can join client calls in the overlap window or stay behind the scenes. An NDA comes first, and the code belongs to your client from the first commit.
React Native or fully native?+
React Native for most products: one codebase, one team, both stores. Fully native makes sense when the app is mostly the hard native part, such as heavy camera or audio processing, complex background work, or a platform feature React Native does not support yet. We will tell you which side of that line you are on, and write the native parts by hand either way.
Expo or bare React Native?+
Expo, in almost every case now. Development builds and config plugins removed most of the old reasons to eject, and EAS handles builds and signing. We go bare only when a native dependency genuinely cannot live inside a config plugin, and we will explain why before doing it, because it makes every future upgrade more work.
Can you take over an app someone else built?+
Yes. We start by getting it to build on a clean machine, which is often the hardest step, then bring React Native and its dependencies up to a supported version before adding features. We tell you what state the app is in, including where the store listings, signing keys and accounts actually live, before quoting anything larger.
Who handles App Store and Play Store submission?+
We do, from your developer accounts, not ours. We prepare the builds, the privacy disclosures and the notes for the reviewer, and deal with rejections when they come. The accounts, signing keys and listings stay in your name, so you can change developers later without asking anyone's permission.
Does our backend need to change for a mobile app?+
Often, a little. A mobile client stays on old versions for months, retries on bad networks, and cannot be fixed by a server deploy. That means versioned endpoints, idempotent writes, and a way to tell an old client it must update. We check the backend for those before the first screen is built, because retrofitting them after launch is slower.