Backend Development for Rampy.money

Project Title

Backend Development for Rampy.money – Fintech Platform (APIs, Payments, Wallets, Compliance)

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Project Description

We are building Rampy.money, a fintech platform focused on regulated money movement, wallet infrastructure, and business payments.

We are looking for an experienced backend engineer / small backend team to design, build, and deploy all backend and infrastructure components, excluding frontend UI development.

This is a serious production-grade fintech system, not a demo or MVP-only build.

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Scope of Work (Backend Only)

1. Backend Architecture & Core APIs
• Design scalable backend architecture (REST APIs)
• Authentication & authorization flows
• Role-based access (admin, user, business)
• Secure session & token handling
• Environment separation (Dev / Staging / Prod)

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2. Payments & Financial Integrations
• Bridge.xyz API integration
• Customer creation
• Bank account linking
• ACH / wire flows
• Transaction tracking & webhooks
• Privy Wallet integration
• User → wallet mapping
• Wallet lifecycle management
• Secure key handling (Privy managed)
• Payment status reconciliation
• Ledger-style transaction records (credits/debits)

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3. Database & Ledger Design
• Database schema design (PostgreSQL / equivalent)
• User, wallet, transaction, compliance tables
• Idempotency handling for payments
• Audit logs (immutable where required)
• Mapping logic between:
• Privy users
• Bridge customers
• Internal Rampy user IDs

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4. Compliance & Security
• KYC/KYB data handling (no UI work)
• Secure PII storage & access control
• Webhook verification & signing
• Rate limiting & abuse protection
• Logging & monitoring setup
• Compliance-friendly data models (bank / Stripe review ready)

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5. Webhooks & Background Jobs
• Webhook listeners (Bridge, payment status updates)
• Retry & failure handling
• Background workers / queues
• Transaction state machines

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6. Admin & Internal APIs
• Internal/admin APIs for:
• Viewing users & transactions
• Compliance review flags
• Manual overrides (if allowed)
• Exportable reports (CSV/JSON)

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7. DevOps & Deployment
• Cloud deployment (AWS / GCP / equivalent)
• Dockerized services
• CI/CD pipeline
• Environment variables & secrets management
• Production hardening checklist

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What Is NOT Included
• Frontend UI / design
•. Landing pages or marketing sites
• Mobile app development

(Frontend will be handled separately.)

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Tech Stack (Preferred but Flexible)
• Backend: Node.js / TypeScript or Python
• Database: PostgreSQL
• Infra: Docker, cloud-hosted
• API-first design
• Webhook-driven architecture

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Deliverables
• Fully functional backend APIs
• Integrated Bridge + Privy workflows
• Database schema & migrations
• API documentation (Postman / Swagger)
• Deployment-ready production setup
• Basic technical documentation

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Ideal Freelancer / Team
• Proven fintech or payments experience
• Prior work with ACH, wallets, or banking APIs
• Strong understanding of security & compliance
• Comfortable building production systems
• Clear communication & documentation

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Project Type
• Fixed-price or milestone-based (open to discussion)
• Long-term relationship possible for maintenance & scaling

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To Apply

Please include:
1. Relevant fintech or payments projects
2. Backend tech stack used
3. Experience with financial APIs or wallets
4. Suggested architecture approach for this project