Senior Backend Engineer – FinTech / Crypto & Payments Platform

We are building a Unified Crypto & Fiat Financial Platform that combines:

• Crypto payment processing
• Multi-currency wallets (crypto + fiat)
• FX conversion
• Virtual card payments
• Fiat bank transfers (ACH)

The platform is designed for merchants and end users, with a security-first, compliance-driven architecture aligned for future MSB / EMI licensing.

This is not a prototype or hobby app.
It is an audit-ready fintech system with real payment rails, KYC/AML workflows, immutable ledgers, and production-grade infrastructure.

What You’ll Be Working On

You will play a key role in designing and building the core backend services of a regulated payments platform, including:

• Crypto payment gateways and transaction tracking
• Internal wallet & ledger systems (double-entry, audit-safe)
• FX conversion flows and settlement logic
• ACH payout processing
• Secure webhook systems (signed, idempotent, retried)
• Compliance-aware system design (KYC, AML, audit logs)

Tech Stack

Backend

• Node.js (NestJS) – microservice architecture
• PostgreSQL (ledger, balances, audit logs)
• Redis (caching, idempotency, rate limiting)
• Docker (containerized services)

Infrastructure & DevOps

• AWS (multi-env: dev / staging / production)
• CI/CD pipelines
• Secure secrets management
• Cloud monitoring & alerting

Integrations

• Stripe (ACH, payouts, on/off-ramp)
• Crypto exchanges (Coinbase Prime, Kraken, Binance)
• KYC: Onfido
• AML: Chainalysis / TRM
• Card issuing partners (Stripe Issuing / Marqeta – abstraction based)

Responsibilities

• Design and implement scalable backend services using NestJS
• Build secure wallet, ledger, and transaction systems
• Integrate third-party payment, banking, and compliance APIs
• Implement RBAC, audit logging, and traceability across services
• Ensure reliability via background workers, retries, and reconciliation jobs
• Collaborate with frontend, DevOps, and compliance stakeholders
• Write clean, testable, production-grade code
• Participate in architecture discussions and technical decision-making

Required Qualifications

• 5+ years of backend development experience
• Strong experience with Node.js / NestJS
• Solid understanding of databases and transactional systems
• Experience building payment, fintech, or financial systems
• Knowledge of REST APIs, webhooks, and async processing
• Familiarity with AWS and Dockerized deployments
• Strong security mindset (data protection, access control, secrets handling)

Nice to Have (Big Plus)

• Experience with crypto payments or exchanges
• Understanding of KYC / AML workflows
• Prior work on wallets, ledgers, or banking systems
• Experience with Stripe, ACH, or card issuing APIs
• Fintech startup or regulated-industry background

What We Offer

• Competitive contract compensation
• Clear milestone-based delivery plan
• Well-defined scope and architecture (no chaos projects)
• Opportunity to work on a real, regulated financial platform
• Long-term growth potential post-MVP

Job Type: Full-time

Pay: Rs450,000.00 - Rs600,000.00 per month

Work Location: In person