Sr. Software Engineer

Job Description:

Responsibilities

• Technical Leadership
• Lead the end-to-end development of payment processing systems using the .NET stack
• Own system architecture and technical design for payment services and APIs
• Ensure high availability, fault tolerance, and performance for transaction-heavy systems
• Drive adoption of best practices (SOLID, clean architecture, domain-driven design)
• Payments & Domain Ownership
• Design and implement payment workflows, settlements, reconciliations, and exception handling
• Handle high-volume, low-latency transaction processing
• Ensure idempotency, retries, and transactional consistency
• Collaborate with business teams on payments rules, validations, and edge cases
• Security & Compliance
• Ensure compliance with PCI-DSS, HIPAA, and internal security standards
• Implement secure authentication and authorization (OAuth2, JWT, role-based access)
• Partner with security teams on audits, vulnerability remediation, and data protection
• Mentorship & Collaboration
• Lead and mentor a team of senior and mid-level engineers
• Conduct code reviews and enforce coding standards
• Participate in sprint planning, estimation, and delivery commitments
• Collaborate cross-functionally with Product, QA, SRE, and Compliance

Qualification & Experience     

• Core Technologies
• Strong expertise in C#, .NET Core / .NET 6+
• ASP.NET Core Web APIs & Microservices
• RESTful services and event-driven architectures
• Payments & Data
• Strong SQL Server experience (complex queries, performance tuning)
• Experience with financial transactions and data consistency
• Knowledge of reconciliation and reporting systems
• Cloud & DevOps
• Azure ecosystem (App Services, Functions, Service Bus, Storage, Key Vault)
• CI/CD pipelines (Azure DevOps or GitHub Actions)
• Experience with Docker; Kubernetes is a plus
• Architecture & Patterns
• Microservices architecture
• Domain-Driven Design (DDD)
• Messaging & eventing (Service Bus, Kafka, or equivalent)
• Caching strategies (Redis)