Freelance Backend Engineers in Los AngelesFreelance Backend Engineers in Los Angeles
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Aurelien GERIER's avatar
Aurelien GERIER
pro
Los Angeles, USA
Expert & Passionate Fullstack Engineer 11+ yrs exp & Media
$50k+
Earned
5x
Hired
4.9
Rating
77
Followers
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Expert & Passionate Fullstack Engineer 11+ yrs exp & Media
Cover image for Scalable Digital Platform for Cognitive Testing
Scalable Digital Platform for Cognitive Testing
0
23
Cover image for HumanData Web Application
HumanData Web Application
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25
Cover image for Breakjobs.ai
Breakjobs.ai
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39
Cover image for WhatsApp & RCS Integrated Platform for ParaVet.live
WhatsApp & RCS Integrated Platform for ParaVet.live
1
27
Backend Engineer(2)
Andrew ReVille's avatar
Andrew ReVille
Burbank, USA
Fortune 500 AI tools. Small business prices.
New to Contra
Fortune 500 AI tools. Small business prices.
Cover image for Automate Client Delivery: AI-Powered Solution for Small Busi...
Build in Public Built an entire client delivery engine yesterday. One day. 18 deployments. 6 AI agents. Delivered SAME DAY. Client pays → onboarding auto-fills → they hit submit → six agents start building their website, CRM, emails, chatbot, content, and voice system. In parallel. No human in the loop. First site out of the pipeline? A floral boutique with scroll animations, a working chatbot, and AI-generated images. Live in under 20 minutes. This is what I build for small businesses at BizStack.vip. DM me .
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5
121
Cover image for Most small businesses pay $2K–$5K/month
Most small businesses pay $2K–$5K/month across 4 different vendors for their website, CRM, email marketing, and social media. None of those vendors talk to each other. BizStack AI bundles all of it — website, CRM, lead automation, email sequences, chatbot, content engine, voice agent — into one subscription starting at $99/month. The secret? AI agents don't bill hourly. 75–90% gross margins. Happy to walk anyone through the math.
2
1
92
Cover image for Client Website - Bloom Boutique Built
Client Website - Bloom Boutique Built a complete website for a curated floral boutique using BizStack AI's automated delivery engine - designed, animated, and deployed SAME DAY. Delivered: scroll-animated site with fade-in reveals and stat counters, custom Playfair Display + DM Sans typography, AI-generated images via Kie.ai (http://Kie.ai) (no stock photos), lead capture popup, working AI chatbot with 20 industry FAQs, contact form, blog template, full mobile responsiveness, Schema.org (http://Schema.org) structured data, and SEO setup. No templates. No stock assets. Every element custom to the client's brand. Live: bizstack-bloom-boutique.vercel.app (http://bizstack-bloom-boutique.vercel.app)
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19
Cover image for AI-generated premium branded proposal for
AI-generated premium branded proposal for a commercial real estate firm in Detroit. Built the entire 7-page document — cover, situation analysis, deliverables, ROI projections, and pricing. Branded to the client's exact colors, typography, and voice.
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28
Backend Engineer(1)
Shirrel Ziv's avatar
Shirrel Ziv
pro
Los Angeles, USA
API integrations, automation & AI systems engineer
New to Contra
API integrations, automation & AI systems engineer
Cover image for Quicklist is a CLI tool
Quicklist is a CLI tool that lets creators list digital products across multiple platforms from one command. Write your product details once, publish everywhere — no manual copying between storefronts. Built for developers and creators selling tools, templates, and digital assets.
1
119
Cover image for Autointegrate is an AI-powered developer
Autointegrate is an AI-powered developer tool that generates production-ready integration code directly into your existing repo as a pull request. Connect GitHub, pick your integrations (Stripe, OpenAI, Clerk, Supabase, Resend, and more), preview the diff line by line, and apply safely. What usually takes 2+ hours takes seconds. Zero lock-in, zero runtime dependency — the code is yours. $29 one-time.
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65
Cover image for IntegrateAPI is a CLI-first developer
IntegrateAPI is a CLI-first developer toolkit that ships production-ready TypeScript API integrations for Next.js. Install via CLI, authenticate once, add integrations on demand. Each install includes client initialization, API helpers, webhook handlers, TypeScript types, and env variable templates. 16+ integrations including Stripe, Clerk, Supabase, OpenAI, Resend, Auth0, PostHog, and Vercel. Zero runtime dependency — code lives in your repo. No subscription, no lock-in. $49 one-time, commercial license, unlimited projects, all future integrations included.
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157
Cover image for Likely Honey is a productized
Likely Honey is a productized async SEO page-optimization service that rewrites website pages to match search intent, improve rankings, and lift conversions. No calls, no retainers — Stripe checkout, intake form, Google Doc deliverable in 5-15 business days. Packages from $499 (single page) to $7,500+ (full site). Each deliverable includes keyword research, SERP and competitor analysis, conversion-focused rewrites, meta titles and descriptions, content restructuring, and internal linking strategy. Built for SaaS founders and small teams who move fast.
2
124
Backend Engineer(3)
Yao Xue's avatar
Yao Xue
Los Angeles, USA
Senior Full Stack Software Engineer
Senior Full Stack Software Engineer
Cover image for Buy Automotive Tires Online for Less | SimpleTire
Buy Automotive Tires Online for Less | SimpleTire
1
3
Cover image for College Board
College Board
1
2
Cover image for SimpleNursing
SimpleNursing
1
2
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Backend Engineer(1)
Zach Vaillancourt's avatar
Zach Vaillancourt
Los Angeles, USA
Application Development with a Silicon Valley Engineer
Application Development with a Silicon Valley Engineer
Cover image for Founder: Bloqqit (Developer Oriented CMS)
Founder: Bloqqit (Developer Oriented CMS)
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5
Cover image for OpenAI Agent System
OpenAI Agent System
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6
Cover image for Technical Cofounder: Visual note-taking web app with ChatGPT
Technical Cofounder: Visual note-taking web app with ChatGPT
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15
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Backend Engineer(1)
Jared Bartlett's avatar
Jared Bartlett
pro
Los Angeles, USA
Senior Mobile Engineer | UX/UI Design| React Native, Flutter
6
Followers
Senior Mobile Engineer | UX/UI Design| React Native, Flutter
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.
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138
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.
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146
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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203
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.
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138
Backend Engineer(2)
Angushylesh Subburaj's avatar
Angushylesh Subburaj
Pasadena, USA
Backend & AI Engineer · Java · Python · Go · AWS · LLMs
New to Contra
Backend & AI Engineer · Java · Python · Go · AWS · LLMs
Cover image for PDF Data Extraction Engine —
PDF Data Extraction Engine — NLP Backend
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10
Cover image for Beat Battle Platform — CNTNDR
Beat Battle Platform — CNTNDR
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22
Cover image for know-my-health — AWS Infrastructure CLI
know-my-health — AWS Infrastructure CLI Tool
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17
Cover image for Suede — AI-Powered B2B SaaS
Suede — AI-Powered B2B SaaS for Fashion Wholesale
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19
Backend Engineer(2)