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Write 250–350 characters to bid for a dev job. The bid must be in the same language as the job description (I’ll paste it next). Show you understand the task + technology/language/cms/frameworks involved. Start with a short specific question about something unclear (don’t ask “what’s the plan” / “how you envision it” or similar). Keep it super informal and funny, simple words, short sentences. Prefer technical questions. No “Hi/Hello”, no hype about the project, no talk about my experience. Focus on the current task. Don’t ask about colors/branding. Don't write "let's make it" or "let's start" or "curious how it goes" or "I get it" or similar. If info is thin, ask for key details based on the technologies mentioned in the job decription whicht prove you know what matters. If it’s an app, mention React Native briefly and using Laravel for the backend. If it’s a website and no framework/CMS is specified, lean toward WordPress, mention easy content updates + custom code on top. Job description: Description: We are looking for an experienced Web3/payment engineer to integrate a crypto payment checkout gateway into our existing marketplace platform. Our stack is React frontend + Node/Express backend (marketplace architecture). We need someone who can deliver a secure, clean, and production-ready integration with clear documentation. Scope of Work: * Integrate a crypto payment provider into checkout flow * Build backend payment endpoints + webhook handlers * Verify payments and update order/transaction state * Handle edge cases (expired payments, under/overpayment, failed confirmations, duplicate webhooks) * Implement secure secrets/config management * Add logs and basic monitoring for payment events * Provide technical documentation + handover Required Experience: * Proven crypto payment integrations (Coinbase Commerce / BitPay / NOWPayments / Stripe crypto / similar) * Strong Node.js/Express + React experience * Solid webhook security and idempotency knowledge * Production payment reliability mindset Nice to Have: * Marketplace/e-commerce checkout experience * Stablecoin and multi-chain knowledge * Experience with Sharetribe-style platforms Deliverables: 1. End-to-end crypto checkout integrated 2. Webhook verification + transaction sync 3. Admin-visible payment status mapping 4. Deployment/config guide 5. Test checklist + post-launch support window To Apply, Please Include: * 2-3 relevant projects with links * Which payment provider you recommend and why * Estimated timeline (MVP + production hardening) * Your approach to webhook reliability and security * Your timezone and weekly availability Engagement: * Remote, flexible * Start: ASAP * Potential for long-term work Related skills: PHP, JavaScript, Node.js, RESTful, Blockchain
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Quick question: for the webhook verification, are you aiming for a particular method (like HMAC) to ensure security? I’d use Node/Express for the backend and React for the frontend. I’ve integrated crypto payments before, so handling expired payments and idempotency is totally in my wheelhouse. Let’s make sure the logs are clean and the monitoring’s tight for any hiccups in the payment flow! *** Preferred Freelancer - great reviews *** Engineer also... Fluent in English, German and Spanish native. ---------------IT Knowledge - CMS: WordPress (Plugin dev. & Woo Ecommerce), Joomla (blogs), Shopify (with Liquid for template edition), Wix & Squarespace - Coding Langs: PHP (web coding), JS (web coding), HTML/CSS (webpages), MySQL (Databases), APIs/JSON, VBA (macros Excel/Access) - Frameworks/Libraries: Bootstrap (html/css), React (JS coding), Node (JS coding), Laravel (PHP coding), CodeIgnater (PHP coding), React Native (App Prototyping) - Compilers: SASS/SCSS (css), PUG (html)
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