EverExpanse provides specialized Staff Augmentation and Staffing services in Payments and FinTech Engineering, supporting payment processors, financial institutions, POS manufacturers, payment gateway providers, and FinTech platforms in building secure, compliant, and scalable payment solutions.
With deep expertise across the complete payment ecosystem—from EMV kernel development and POS application engineering to payment gateway integration, transaction processing, and certification—EverExpanse enables organizations to accelerate payment product development and regulatory compliance through highly skilled engineering talent.
Our payment engineering professionals bring hands-on experience in EMV L1, L2, and L3 certification, contact and contactless payment technologies, payment device software, secure transaction processing, and gateway integrations aligned with PCI, EMVCo, and scheme certification requirements.
EMV Kernel Development (Contact & Contactless)
EMV L1 / L2 / L3 Certification support
Payment terminal software development
SoftPOS development
Android POS and Linux POS development
Payment device firmware integration
Embedded C / C++
Java / Kotlin (Android POS)
Linux-based embedded systems
Android POS application development
Payment terminal UI development
Transaction processing logic
Device integration (card reader, NFC, PIN pad, printer)
Verifone
Ingenico
PAX
Newland
Castles Technology
SoftPOS platforms
Payment gateway integration
Payment gateway backend development
Payment orchestration platforms
API-based payment integrations
Java
GoLang
.NET Core
Node.js
REST APIs
Microservices architecture
ISO 8583
ISO 20022
JSON / REST
SOAP
Payment switch development
Transaction routing systems
Authorization and settlement systems
Transaction lifecycle management
Java
GoLang
PostgreSQL
SQL Server
Redis
Kafka
EMVCo certification support
Visa / Mastercard certification support
PCI DSS compliance engineering support
Scheme certification integration
Contactless payments (NFC)
QR code payments
Mobile wallets integration
Tokenization
Secure Remote Commerce (SRC)
3D Secure (3DS)
Embedded C , C++, Java, GoLang, .NET Core, Kotlin, Python
Android, Linux, Embedded systems
PostgreSQL, SQL Server, MySQL, Oracle
Kafka, RabbitMQ, REST APIs, ISO 8583
Azure, AWS, Linux server environments
Payment Processors
Payment Gateway Providers
POS Terminal Manufacturers
FinTech Companies
Banks and Financial Institutions
Payment Aggregators
Payment Device Manufacturers