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Direction Approved & Locked

B2B Escrow & Invoice Settlement Engine

Automated milestone-based payments platform for cross-border software procurement with instant verification.

Demo Enterprise Founder

Verified Product Owner

Desired Outcome

Eliminate payment disputes between founders and development agencies by locking funds in automated milestone escrow.

Target Users

SaaS Founders, CTOs, Enterprise Software Houses, Independent Engineering Agencies

Target Budget

$15,000 – $45,000 USD

Target Date

Q3 2026

Technical Architecture

Micro-service architecture with webhook-driven Stripe Connect escrow vault and FastAPI validation backend.

Event-driven architecture using Next.js 14 App Router frontend, Python FastAPI backend API, PostgreSQL with Row-Level Security, Redis queue for webhook processing, and Resend for transactional email notifications.

Assumptions

Primary payment gateway will be Stripe Connect with fallback support for manual wire approvals.

Delivery Risks

Potential delays in cross-border KYC verification during onboarding of foreign agencies.

Minimum Security Floor

AES-256 encryption at rest, TLS 1.3 in transit, automated HMAC signature verification on webhooks, role-based access control (RBAC).

Scope Baseline Locked & Ready for Bidding
Verified Marketplace

Received Agency Bids & Proposals

1 Bid Accepted
Verified Agency

contact@nexus-labs.dev

Bid Price

$28,000 USD

Timeframe

4 Weeks

Accepted & Granted

Cover Letter

Our agency has delivered 12+ Stripe Connect platforms. We will provide 2 dedicated senior engineers and full test coverage.

Verified Agency

dev@cloudscale-solutions.io

Bid Price

$35,000 USD

Timeframe

6 Weeks

Cover Letter

Specialized in Python FastAPI microservices and SOC2 compliant architectures.

Traceable Architecture

Locked Scope Hierarchy

3 Defined Items
epicMoSCoW: mustKano: basic

Core Escrow & Milestone Vault

Multi-party fund locking with automated release triggers on milestone verification.

Acceptance Proof

Funds held in isolated vault until 2-of-3 signatures approved.

featureMoSCoW: mustKano: performance

Milestone Proof Review Portal

Interface for founders to inspect deliverable proof artifacts before releasing funds.

Acceptance Proof

Founder can inspect diffs and test logs directly in dashboard.

epicMoSCoW: shouldKano: delighter

Agency Verification & Bidding

Vetted agency marketplace with reputation score and fixed-price bidding.

Acceptance Proof

Agencies must pass OAuth verification and organization check.