Full Stack Engineer

Senior Go Developer – PayPlus

PayPlus is looking for an exceptional Senior Go Developer to help build the next generation of payment infrastructure, fintech services, and global-scale transaction processing platforms.

At PayPlus, you'll work on high-volume payment systems, digital wallets, acquiring services, banking integrations, real-time processing engines, and cloud-native microservices used by thousands of businesses every day.

Responsibilities

• Design and develop high-performance backend services using Go (Golang)
• Build scalable microservices architectures
• Develop payment processing, acquiring, settlement, and reconciliation systems
• Design and implement REST APIs and gRPC services
• Work with distributed systems and event-driven architectures
• Develop integrations with banks, payment processors, card schemes, and fintech providers
• Optimize systems for performance, reliability, and scalability
• Participate in architecture design and technical decision making
• Perform code reviews and enforce engineering best practices
• Troubleshoot production issues in mission-critical financial systems
• Collaborate closely with Product Managers, Architects, DevOps, QA, and Frontend teams

Technical Requirements

Must Have

• 5+ years of backend development experience
• 3+ years of production experience with Go
• Strong understanding of concurrency, goroutines, channels, and memory management
• Experience building large-scale distributed systems
• Strong knowledge of Microservices Architecture
• Experience with REST APIs and gRPC
• Experience with PostgreSQL and MongoDB
• Experience with Kafka or other event-streaming platforms
• Experience with Redis
• Docker and Kubernetes experience
• AWS cloud experience
• Git and CI/CD pipelines
• Strong understanding of system design and software architecture
• Experience writing unit, integration, and performance tests

Nice to Have

• Experience in Payments, Fintech, Banking, or Acquiring systems
• PCI-DSS knowledge
• Open Banking experience
• Card issuing or acquiring experience
• Experience with settlement and reconciliation systems
• Event Sourcing and CQRS
• ClickHouse
• OpenSearch / Elasticsearch
• Terraform
• Prometheus & Grafana
• Service Mesh technologies (Istio / Linkerd)

What You'll Build

• Payment Gateway Platform
• Merchant Acquiring Services
• Digital Wallet Infrastructure
• Gift Card & Loyalty Systems
• Multi-Currency Payment Processing
• Reconciliation Engine
• Marketplace Settlement Platform
• Banking Integrations
• Real-Time Fraud Detection Services
• Vending & IoT Payment Solutions

Soft Skills

• Strong ownership mentality
• Excellent problem-solving skills
• Ability to work independently
• Passion for clean code and engineering excellence
• Excellent communication skills
• Ability to mentor junior developers
• Product-oriented thinking

Tech Stack

• Go
• Node.js
• Kafka
• PostgreSQL
• MongoDB
• Redis
• OpenSearch
• AWS
• Kubernetes (EKS)
• Docker
• GitHub Actions / Jenkins
• Prometheus
• Grafana

Why Join PayPlus?

PayPlus is one of Israel's leading fintech companies, processing payments across online, retail, self-service kiosks, vending machines, marketplaces, and digital banking platforms. You'll have the opportunity to work on challenging engineering problems at scale and help shape the future of payments technology.