Job DescriptionApp Developer and Support Engineer III
JOB DESCRIPTIONWe are seeking a highly skilled developer to design and support software for Point of Sale (POS) terminals, focusing on C, C#, Python, serial communication, REST APIs, and AI-driven real-time processing. This role involves building low-latency, highly reliable systems that integrate with payment hardware, backend services, and AI models for intelligent decision-making.
HYBRID POSITION- MUST BE ABLE TO TRAVEL TO SOMERSET, NJ OFFICE.Key Responsibilities:Core Development (C++, C#, Python)
Develop and maintain applications using:
- C; for system-level and device interaction
- C# (.NET) for application and API layers
- Python for AI integration, automation, and data processing
- Build scalable, high-performance POS software systems
- Optimize code for low-latency and real-time execution
- Debug and resolve complex production issues
- Serial Communication & Device Integration
Implement and support serial communication (RS232, USB, COM) with:
- Payment terminals
- Barcode scanners
- Receipt printers
- Cash drawers
- Develop device drivers/interfaces and handle protocol-level communication
- Ensure reliable message parsing, retries, and fault tolerance
- API Development (RESTful Services)
- Design and implement secure, scalable REST APIs
- Enable seamless communication between POS devices and backend systems
- Implement authentication, encryption, and validation mechanisms
- Optimize APIs for real-time transaction processing
- AI & Machine Learning Integration
- Develop and integrate AI/ML models into POS workflows using Python
Implement:
- Fraud detection and anomaly detection models
- Transaction pattern analysis
- Intelligent diagnostics and log analysis
- Use Generative AI for:
- Automated troubleshooting
- Code generation and optimization
- Smart documentation and knowledge systems
System Integration & Testing
- Integrate with payment gateways, ticketing systems, and enterprise platforms
- Develop simulation tools for hardware testing
- Perform unit, integration, and end-to-end testing
- Support field deployments and production troubleshooting
Performance, Security & Compliance
- Ensure compliance with payment security standards (PCI-DSS awareness)**
- Optimize systems for throughput, latency, and reliability
- Implement robust logging, monitoring, and observability
Required Qualifications - Bachelor's degree in Computer Science, Engineering, or equivalent experience
- 5+ years of software development experience
- Strong proficiency in:
- C++ (embedded/system-level programming)
- C# (.NET)
- Python (AI/automation/data processing)
- Experience with serial communication protocols
- Strong understanding of REST API development
Strong Python skills for:
- AI/ML model integration
- Data processing and automation
- Understanding of latency optimization and real-time constraints
Experience with:
- Model deployment and inference pipelines
- Anomaly detection and classification models
- Familiarity with frameworks (preferred):
- TensorFlow / PyTorch / Scikit-learn
- Experience integrating AI APIs (OpenAI, Azure AI, etc.)
Real-Time Processing Skills
- Event-driven and streaming architectures
- Multithreading and concurrency (C++/C#)
- Async programming and performance tuning
Preferred Qualifications - Experience in POS, payments, or ticketing systems
- Knowledge of payment standards (EMV, ISO 8583)
- CI/CD tools (Jenkins, GitHub Actions)
- Familiarity with cloud platforms (AWS, Azure)
- Key Skills
- Strong debugging and troubleshooting across hardware/software boundaries
- Real-time system design and optimization
- AI-driven development mindset
- Strong communication and collaboration
- Nice to Have
- Embedded systems or IoT experience
- Experience with edge AI deployments
Working for You We offer perks and rewards designed to support you:
- Health & Welfare Benefits: Comprehensive plans tailored to your needs, effective from day one.
- Retirement Savings: Robust programs to help you secure your financial future.
- Employee Discounts: Access to a wide range of discounts on merchandise, services, travel, and more.
- Career Growth Opportunities: Paths for advancement within a global organization.
- Paid Training: Learn while you earn with award-winning learning platforms.
- Paid Time Off: Competitive PTO packages to help you recharge.
- Great Work Environment: Join an award-winning culture that values diversity and inclusion.
