Senior Blockchain Engineer

apricot; United States; À distance; USD 180 000 - 240 000; Temps partiel

Résumé du poste

apricot is building an orchestration layer for humanitarian finance, enabling donors and NGOs to operate blockchain-enabled payments via a single API. This remote role focuses on taking the MVP to production during a pilot, collaborating with the founding team to shape architecture and technical direction.

You will work across frontend, backend, and blockchain components including Next.js, React, Node.js, and TypeScript, with emphasis on security, RBAC, and audit logging to ensure production

Qualifications

• Senior engineer with hands-on production experience building blockchain-enabled applications.
• Arabic language collaboration experience is required.

Responsabilités

• Take the platform from MVP to production during the pilot.
• Develop and complete core platform components (frontend, backend, blockchain).
• Ensure production readiness with encryption, RBAC, audit logging, and security reviews.
• Design and implement transaction security workflows and monitoring.

Connaissances

Node.js

TypeScript

REST APIs

Next.js

React

Blockchain development

Smart contract development

Multi-chain applications

EVM ecosystems

Wallet integration

Outils

WalletConnect

Alchemy

QuickNode

OpenZeppelin

Description du poste

This is a remote position. Our client is building the infrastructure that enables humanitarian organizations to use stablecoins without requiring blockchain expertise. Rather than building another wallet or payment application, we're creating an orchestration layer that connects donors, NGOs, compliance providers, blockchain networks, regulated financial institutions, and local payout providers through a single API. Blockchain is the infrastructure—not the product. Our platform orchestrates the complete payment workflow, including:

• Funding and treasury management
• Compliance and sanctions screening
• On-chain transactions
• Reporting and audit trails
• Beneficiary payouts
• Local off-ramp integrations

We integrate best-in-class providers for custody, compliance, blockchain connectivity, and financial settlement instead of replacing existing financial infrastructure.

About the Engagement

This role begins as a project-based contract focused on delivering key milestones for an upcoming pilot. The initial engagement is deliverables-based, with clearly defined objectives and timelines. Upon successful completion of the pilot and continued platform growth, there is a strong opportunity to transition into a long-term full-time engineering role . You'll work directly with the founding team and Technical Lead, helping shape the architecture and technical direction of the platform.

Where the Platform Stands

Our MVP is approximately 80% complete.

• Already Live
• NGO onboarding and authentication
• Wallet connectivity
• Stablecoin payment initiation
• Compliance screening
• On-chain transaction execution

Current Technology Stack

Frontend

• Next.js
• React
• TypeScript
• Vercel

Backend

• Node.js
• Supabase
• PostgreSQL

Blockchain

• WalletConnect
• USDC
• Arbitrum
• Base

Note: The pilot network may transition to Stellar , so experience with both EVM and non-EVM ecosystems is highly valuable.

What You'll Deliver

During the pilot engagement, you'll be responsible for taking the platform from MVP to production.

Production Readiness

• Production hardening and infrastructure improvements
• Encryption at rest and in transit
• Role-Based Access Control (RBAC)
• Comprehensive audit logging
• Security reviews and penetration testing

Platform Development

• Build and complete several core platform components, including:
• Off-chain audit records
• Donor reporting dashboard
• Treasury workflows
• Local off-ramp integrations
• Payment orchestration APIs

Blockchain Engineering

• Develop and integrate secure smart contracts using audited standards such as OpenZeppelin
• Expand the chain abstraction layer across:
  • Ethereum
  • Stellar
  • Arbitrum
  • Base
  • Tempo
• Support both EVM and non-EVM blockchain ecosystems

Transaction Security

• Design and implement:
  • Transaction approval workflows
  • Operational guardrails
  • Secure wallet interactions
  • Risk controls
  • Blockchain transaction monitoring (e.g., Chainalysis or similar)

Requirements

We’re looking for a senior engineer with hands‑on production experience building blockchain-enabled applications. Strong experience with

• Node.js
• TypeScript
• REST APIs
• Next.js
• React

Blockchain

• Ethereum
• Smart contract development
• Multi-chain applications
• EVM ecosystems
• Wallet infrastructure
• WalletConnect
• RPC providers such as Alchemy or QuickNode

Security Experience implementing:

• Encryption
• RBAC
• Audit logging
• Secure key management
• Production-grade security practices

Language

• Professional working proficiency in Arabic for collaboration with partners and stakeholders across Arabic-speaking operating regions.