Senior Backend Developer – Fintech & Payment Orchestration(High-Risk Payments, iGaming & Fintech)

Descrição da Vaga

Requisitos

• PostgreSQL
• AWS (EC2, S3, RDS, Lambda)
• Multiple PSP APIs
• Acquirer integrations
• Open Banking APIs
• KYC/AML APIs
• Handle webhook systems and asynchronous callbacks
• Required Skills & Experience
• 5+ years of backend development experience
• Strong expertise in Node.js and microservices
• Deep understanding of payment lifecycle (authorization, capture, settlement, refund)
• Experience with multi-PSP integrations
• Strong knowledge of API security standards
• Experience working with high-risk or regulated environments
• Understanding of AML/KYC workflows
• Experience handling real-time, high-volume systems
• Thinks like an architect
• Takes ownership like a founder
• Understands that payments are not just APIs — they are risk, compliance, reputation, and trust
• Has a long-term growth mindset
• Can build systems that are secure, resilient, and scalable

Responsabilidades

• As a Senior Backend Developer for Payomatix Technologies, you will play a critical role in designing and implementing back-end infrastructure for our fintech and payment orchestration platforms
• Responsibilities include developing scalable APIs, optimizing database performance, designing microservices, integrating various payment processors, and ensuring the reliability and security of our backend systems
• You will collaborate closely with cross-functional teams to deliver cutting-edge solutions in high-risk payments, iGaming, and fintech
• This is a full-time, remote role requiring strong technical expertise and an innovative mindset
• Node.js (Primary)
• NestJS / Express.js
• Python (Microservices / Risk modules)
• REST & Webhook-based APIs
• GraphQL (where required)
• Messaging & Queues
• Kubernetes (Container orchestration)
• NGINX
• CI/CD pipelines (GitHub Actions / GitLab CI)
• We are seeking a Senior Backend Developer who understands not only code — but financial transaction flows, risk management, scalability, and compliance constraints
• This role requires ownership
• You will design, build, optimize, and maintain mission-critical payment infrastructure that processes high-volume and high-risk transactions globally
• Key Responsibilities Architecture & Development
• Design scalable microservices architecture for payment routing and orchestration
• Develop and maintain secure RESTful APIs for PSP and bank integrations
• Implement high-availability systems for transaction processing
• Optimize real-time transaction routing logic for maximum approval rates
• Payment Integrations
• Integrate multiple global PSPs and acquirers
• Implement retry logic, cascading, and smart routing mechanisms
• Build failover systems for multi-MID and multi-processor setups
• Security & Compliance
• Ensure PCI-DSS alignment in application architecture
• Implement encryption standards and secure tokenization
• Work closely with compliance and risk teams for fraud controls
• Develop monitoring tools for suspicious transaction patterns
• Performance & Scalability
• Optimize database queries and reduce latency
• Handle high concurrency transaction flows
• Implement caching and queuing mechanisms
• Design systems that can scale across regions
• Fraud & Risk Infrastructure
• Collaborate on risk scoring engines
• Implement rule-based fraud logic
• Support chargeback and dispute management automation
• Build analytics modules for transaction health
• DevOps Collaboration
• Work with DevOps for CI/CD pipeline optimization
• Monitor logs and system performance
• Support production debugging and incident management
• Mentor junior developers
• Conduct code reviews
• Drive best coding practices and architecture decisions
• Take full ownership of modules and deliverables

Benefícios