Bolt
database
Firebase Auth Not Initializing - Authentication Fails
Firebase authentication never initializes. Login and signup endpoints return errors. The Firebase console shows requests aren't being received.
Common signs: 'Firebase app not initialized', 'auth/invalid-api-key', or auth always returns null.
Error Messages You Might See
Error: Firebase API Key not valid. Please pass a valid API key.
Error: auth/invalid-api-key
Error: Firebase app named "[DEFAULT]" already exists
Common Causes
- Firebase config not loaded or contains wrong project ID
- Firebase credentials missing or invalid API key
- Web API not enabled in Firebase console
- Firebase initialized after first auth call
- CORS policy blocking Firebase domain
How to Fix It
Verify Firebase config in environment: const config = { apiKey: process.env.NEXT_PUBLIC_FIREBASE_API_KEY, ... }
Initialize Firebase before any auth calls: firebase.initializeApp(config) at app startup
Check Firebase console: Authentications > Providers enabled, Security > API restrictions allow your domain
Real developers can help you.
Caio Rodrigues
I'm a full-stack developer focused on building practical and scalable web applications. My main experience is with **React, TypeScript, and modern frontend architectures**, where I prioritize clean code, component reusability, and maintainable project structures.
I have strong experience working with **dynamic forms, state management (Redux / React Hook Form), and complex data-driven interfaces**. I enjoy solving real-world problems by turning ideas into reliable software that companies can actually use in their daily operations.
Beyond coding, I care about **software quality and architecture**, following best practices for componentization, code organization, and performance optimization.
I'm also comfortable working across the stack when needed, integrating APIs, handling business logic, and helping transform prototypes into production-ready systems.
My goal is always to deliver solutions that are **simple, efficient, and genuinely useful for the people using them.**
legrab
I'll fill this later
Jaime Orts-Caroff
I'm a Senior Android developer, open to work in various fields
hanson1014
Full-stack developer experienced in fixing and deploying AI-generated apps from Lovable, Bolt.new, Cursor, and Replit. I specialize in debugging Supabase integration issues (auth flows, RLS policies, database connections), fixing broken deployments, resolving routing/blank screen problems, and cleaning up messy React/Vite codebases. I also build production apps with the Claude API and have shipped a Mac desktop dev tool (Nexterm from scratch. Based in Hong Kong, fast turnaround.
Sage Fulcher
Hey I'm Sage! Im a Boston area software engineer who grew up in South Florida. Ive worked at a ton of cool places like a telehealth kidney care startup that took part in a billion dollar merger (Cricket health/Interwell health), a boutique design agency where I got to work on a ton of exciting startups including a photography education app, a collegiate Esports league and more (Philosophie), a data analytics as a service startup in Cambridge (MA) as well as at Phillips and MIT Lincoln Lab where I designed and developed novel network security visualizations and analytics. I've been writing code and furiously devoted to using computers to make people’s lives easier for about 17 years. My degree is in making computers make pretty lights and sounds. Outside of work I love hip hop, the Celtics, professional wrestling, magic the gathering, photography, drumming, and guitars (both making and playing them)
Luca Liberati
I work on monoliths and microservices, backends and frontends, manage K8s clusters and love to design apps architecture
zipking
I am a technologist and product builder dedicated to creating high-impact solutions at the intersection of AI and specialized markets. Currently, I am focused on PropScan (EstateGuard), an AI-driven SaaS platform tailored for the Japanese real estate industry, and exploring the potential of Archify.
As an INFJ-T, I approach development with a "systems-thinking" mindset—balancing technical precision with a deep understanding of user needs. I particularly enjoy the challenge of architecting Vertical AI SaaS and optimizing Small Language Models (SLMs) to solve specific, real-world business problems. Whether I'm in a CTO-level leadership role or hands-on with the code, I thrive on building tools that turn complex data into actionable value.
Nam Tran
10 years as fullstack developer
BurnHavoc
Been around fixing other peoples code for 20 years.
Jared Hasson
Full time lead founding dev at a cyber security saas startup, with 10 yoe and a bachelor's in CS. Building & debugging software products is what I've spent my time on for forever
You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
Should Firebase config be public?
Yes, firebase config is meant to be public. Never commit actual API keys - use NEXT_PUBLIC_ env vars
How do I enable sign-in methods in Firebase?
Firebase Console > Authentication > Sign-in method > Enable Email/Password, Google, GitHub etc.
Why does Firebase auth work locally but not deployed?
Check that NEXT_PUBLIC_FIREBASE_* env vars are set in deployment config and match your Firebase project