Freelance Backend Engineers in San Francisco

Freelance Backend Engineers in San FranciscoFreelance Backend Engineers in San Francisco

Projects People

proSan Francisco, USA

AI Campaign Assets + Agents for DTC Growth

$50k+: Earned

19x: Hired

5.0: Rating

212: Followers

Top

Partner

+1

AI Campaign Assets + Agents for DTC Growth

Cover image for Kevin from Home Alone Telegram Bot

Kevin from Home Alone Telegram Bot

1

64

Cover image for Bespoke Punks NFT Platform

Bespoke Punks NFT Platform

1

40

Cover image for Chad: The Ultimate Crypto Degen Bot

Chad: The Ultimate Crypto Degen Bot

1

68

Cover image for Morpheus AI Persona Chatbot

Morpheus AI Persona Chatbot

0

107

Backend Engineer(14)

San Francisco, USA

Frontend Engineer | iOS Developer 🚀

Frontend Engineer | iOS Developer 🚀

Cover image for lanad22/tuiter-react-web-app-5610-fa22

lanad22/tuiter-react-web-app-5610-fa22

0

6

Cover image for lanad22/web-dev-project

lanad22/web-dev-project

0

3

Cover image for lanad22/ios-project-trivia

lanad22/ios-project-trivia

0

8

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Backend Engineer(2)

San Francisco, USA

Full-stack developer

20: Followers

Full-stack developer

Cover image for Your Supabase app is working…

Your Supabase app is working… but your database is still exposed? 🔐 One mistake I see developers make is setting up authentication and forgetting about Row Level Security (RLS). If you're using Supabase, don't just create your tables and move on. Make sure you: ✅ Enable RLS on your tables ✅ Create policies for who can read data ✅ Create policies for who can insert or update data ✅ Never expose sensitive service keys in the frontend ✅ Test your policies with different user accounts Authentication tells you who the user is. RLS helps control what they can access. Have you ever had an RLS policy block something that should have worked? 👇

2

14

398

Cover image for Found a bug that only

Found a bug that only happened in production. The code looked fine locally. The real problem? A missing environment variable. Lesson: Always check your production environment variables before rewriting working code. 😅 Have you ever spent hours debugging something that turned out to be a simple configuration issue?

5

58

Cover image for 🚨 A bug that looks

🚨 A bug that looks like a frontend problem might actually be your backend. I once spent time checking UI code, only to find the real issue was an API returning the wrong data. When debugging, I always check the full data flow: Frontend → API → Backend → Database Debug the source, not just the symptom. 🔍 Have you ever found a backend bug while fixing a frontend issue?

6

8

218

Cover image for 🚨 “It works on my

🚨 “It works on my machine.” The developer's most dangerous sentence 😂 Your app works perfectly locally, then suddenly breaks in production. Before blaming the code, check: 🔹 Environment variables 🔹 Node.js versions 🔹 Database connection 🔹 API URLs 🔹 CORS configuration 🔹 Production build settings Local success ≠ production readiness. Always test your application in an environment as close to production as possible. What’s the funniest “works locally, breaks in production” bug you've faced? 👇

4

11

253

Backend Engineer(1)

proSan Francisco, USA

AI-First Full Stack Developer | SaaS, PropTech & Health Tech

13: Followers

AI-First Full Stack Developer | SaaS, PropTech & Health Tech

Cover image for Instashowing - Showing Bookings & Offers Platform | React + ROR

Instashowing - Showing Bookings & Offers Platform | React + ROR

0

15

Cover image for Bliv - Reimagined Telemedicine Solution

Bliv - Reimagined Telemedicine Solution

0

3

Cover image for HomeBldr - Investment & Renovation Solutions

HomeBldr - Investment & Renovation Solutions

0

4

Cover image for Sparrowell - A HIPAA-Compliant WebApp

Sparrowell - A HIPAA-Compliant WebApp

0

3

Backend Engineer(1)

San Francisco, USA

Blockchain Dev: Fast, Experienced & Adaptable

Blockchain Dev: Fast, Experienced & Adaptable

Cover image for Smart Contract Development for Real Estate

Smart Contract Development for Real Estate

0

23

Cover image for Indexer

0

5

Cover image for ERC-7518: Dynamic Compliant Interop Security Token

ERC-7518: Dynamic Compliant Interop Security Token

0

41

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Backend Engineer(1)

Full Stack Dev & Data Scientist - UC Berkeley Grad

Full Stack Dev & Data Scientist - UC Berkeley Grad

Cover image for Secure File Storage and Sharing

Secure File Storage and Sharing

0

8

Cover image for Campuswave

0

3

Cover image for COVID-19 Vaccine and Mobility Analysis

COVID-19 Vaccine and Mobility Analysis

0

3

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Backend Engineer(1)

San Francisco, USA

AI-Driven Backend Solutions for Your Biz 🚀

AI-Driven Backend Solutions for Your Biz 🚀

Cover image for AI-Book Reports

AI-Book Reports

0

2

Cover image for Project Management Training tool

Project Management Training tool

0

4

Cover image for LlamaWorksDB

0

8

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Backend Engineer(2)

Creative Software Engineer

9: Followers

Creative Software Engineer

Cover image for ActorRise - Find your audition

ActorRise - Find your audition monologues in seconds

0

58

Cover image for Customized ERC-20 Token

Customized ERC-20 Token

0

28

Cover image for fullcircle - Wellness Community App

fullcircle - Wellness Community App

0

39

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Backend Engineer(2)