Our client is a fintech platform that merges traditional financing with blockchain technology.

Job Responsibilities:

• Backend Development
• Build and maintain Node.js /Serverless backend APIs for payment initiation, stablecoin collection, routing optimization, and compliance checking.
• Design and expand centralized ledger systems for stablecoin and fiat account management.
• Integrate blockchain APIs for on-chain tracking of stablecoin transactions.
• Develop liquidity monitoring modules (across wallets, banks, and providers).
• Frontend Development
• Work with React-based Next.js frontend to integrate collection flows, payment flows, and real-time status updates.
• Extend admin and compliance views for transaction management and partner integrations.
• Web3 and Blockchain Integration
• Build wallet inventory management, secure wallet key access systems (HSM/MPC vaults).
• Connect and reconcile stablecoin balances across multiple chains (EVM-compatible).
• API and Partner Integrations
• Integrate partner routing APIs (e.g., Nilos https://nilos.readme.io/,Cedar Money) for cross-border crypto/stablecoins collection & payment.
• Connect with compliance vendors (e.g., Chainalysis, ComplyAdvantage) for screening and monitoring.
• Security & Observability
• Implement encryption (TLS 1.3, AES-256), JWT auth, penetration-test-ready security models.

• Build observability layers: full logging, real-time metrics, transaction replay functionality.
• Ledger Integrity and Reconciliation
• Implement double-entry ledger design ensuring auditability and real-time client balance tracking.
• Build reconciliation layers between internal records and on-chain/off-chain reports.

Job Requirements:

• Strong experience in Node.js backend development (API-driven systems).
• Familiarity with PostgreSQL, ledger design, and transactional database management.
• Proficiency in Next.js + TailwindCSS frontend development.
• Good understanding of stablecoins (USDT, USDC), EVM-compatible chains, and web3 wallet operations.
• Hands-on experience integrating third-party APIs (payment providers, blockchain explorers, compliance platforms).
• Strong understanding of backend security principles and observability best practices.
• Familiarity with modern dev tools: GitHub, Supabase, serverless functions, Grafana/Datadog.

Good to have:

• Experience working with MPC wallets or HSM-based key management solutions (e.g., Fireblocks, Gnosis Safe).
• Knowledge of liquidity management, treasury handling, and cross-chain stablecoin operations.
• Prior experience in B2B fintech, digital payments, or Web3 financial systems.
• Familiarity with compliance requirements like GDPR, AML/CFT in a payment context.