Senior Software Developer
N
NS Solution Corporation
50 - 100K PHP
Full-time
One San Miguel Avenue (OSMA) Building. H3H5+72P, San Miguel Avenue corner, Shaw Blvd, Ortigas Center, Pasig, Metro Manila, Philippines
RESTful APISwift (for iOS) SwiftUIKotlinJetpack Compose React Native
Responsibilities
- Develop and maintain Node.js-based backend API servers (NestJS / Express)
- Integrate with blockchain nodes using Web3.js, ethers.js, and JSON-RPC
- Develop cryptocurrency wallet services, deposit/withdrawal logic, and transaction monitoring systems
- Implement backend logic related to DeFi protocols or DEX integrations (preferred)
- Develop large-scale backend systems for multi-chain environments (Ethereum, Polygon, Solana, etc.)
- Operate high-availability services on AWS or GCP cloud infrastructure
- Participate in security issue handling and code reviews
Technical Requirements
Backend / Web Development:
- PHP (5.6 / 7.4)
- MySQL
- Node.js
- CodeIgniter 3
- RESTful API development
- AWS (Amazon Web Services)
Mobile Development (any of the following):
- iOS: Swift, SwiftUI
- Android: Kotlin, Jetpack Compose
- Cross-platform: React Native
Qualifications
- At least 3 years of practical experience with Node.js and TypeScript
- Hands-on experience with either RESTful API or GraphQL
- Experience designing and writing queries for RDBMS (PostgreSQL/MySQL) and NoSQL (Redis/MongoDB)
- Experience collaborating with Git-based workflows is required
Preferred Qualifications
- Experience in fintech, payments, or remittance systems
- Exposure to blockchain-based systems or integrations
- Strong knowledge of security best practices for financial platforms
- Experience with cloud infrastructure (AWS)
- Familiarity with Agile/Scrum methodologies