Fintech Full-Stack Software Engineer - Node.js, React Native & Security

Software Engineer — Fintech

(Banking & Security Background)

Company

A leading Gulf-based retail & fintech company

About the Company

We are a leading Gulf-based retail and fintech company building consumer digital wallet products and merchant e-commerce tools. Our platform includes a live, Arabic-first consumer mobile app and a multi-tenant SaaS dashboard serving merchants, operated with a proactive regulatory and compliance posture. Our customers trust us with real financial value — correctness and security are not optional.

The Role

You'll be one of the first engineering hires, working directly with the technical co-founder across the full stack: backend services, the consumer mobile app, and the merchant dashboard. You'll ship features end-to-end — from API design through deployment — on a product where every balance must be exact and every endpoint must be secure.

We're specifically looking for someone with a banking or financial institution background and a strong security mindset. You understand why a ledger must balance, why operations must be idempotent, and why every endpoint, upload, and login flow must be treated as a potential attack surface.

What You'll Do

• Build and maintain backend services (NestJS, TypeScript, PostgreSQL/Prisma, Redis, BullMQ)
• Contribute to the consumer mobile app (React Native / Expo) and the merchant dashboard (Next.js)

Build and harden integrations

third-party e-commerce platform APIs (OAuth, webhooks), SMS/OTP providers, live market price feeds, and payment providers

Own transactional integrity for wallet operations

balances, audit trails, reconciliation

Apply security best practices across the stack

authentication and OTP flows, rate limiting, input validation, secure file handling, and protection of customer data

• Participate in security reviews and hardening of existing services
• Contribute to compliance-driven feature work (payments licensing, tax-authority integration, AML requirements)
• Deploy and operate services in production (Linux, PM2, nginx, PostgreSQL migrations discipline

Requirements

Requirements

• 2–4 years of software engineering experience, including experience at a bank, payments company, or financial institution (core banking, digital channels, payments, or similar)
• Strong TypeScript/Node.js; production experience with NestJS or a comparable framework

Solid security fundamentals

OWASP awareness, secure authentication and session handling, secrets management, and safe handling of user data and uploads

• Solid relational database skills (PostgreSQL preferred) and disciplined handling of production migrations

Understanding of financial-grade engineering

idempotency, atomic transactions, reconciliation, and audit logging

• React Native / Expo experience, including store submission and review cycles
• Experience designing and consuming REST APIs and third-party integrations (OAuth flows, webhooks, token rotation)
• Fluent Arabic and English

Additional Requirements

Hands-on security experience

penetration testing exposure, security audits, or hardening work at a financial institution

• Redis and background job queues (BullMQ or similar)

Familiarity with the Gulf fintech ecosystem

regulatory frameworks, local payment networks, open banking

• Experience integrating with regional e-commerce platforms

DevOps fundamentals

nginx, PM2, CI/CD, server administrationf