API Engineer (DevOps / .NET Core) – Core Banking API Engine at Stretchit Concept Limited

Role Overview

We are seeking an API Engineer with strong DevOps expertise to help design, build, and scale the Core Banking API Engine. You will be responsible for developing mission-critical APIs and microservices using .NET Core, automating deployments with CI/CD pipelines, and ensuring banking-grade security, compliance, and high availability.

This role is central to connecting the core banking system with digital channels, fintechs, and partner ecosystems, making it a critical position in organizational growth.

Key Responsibilities

API Development

• Design, develop, and maintain Core Banking APIs using .NET Core (C#)
• Build microservices that support account management, payments, loans, treasury, and compliance modules
• Define and enforce API standards (OpenAPI/Swagger, JSON, gRPC)
• Integrate with core banking systems
• Ensure backward compatibility and versioning for APIs in production

DevOps & Infrastructure

• Build and maintain CI/CD pipelines (Azure DevOps, GitHub Actions, Jenkins)
• Containerize services with Docker and manage orchestration with Kubernetes (AKS/EKS/GKE)
• Automate infrastructure with Terraform/ARM templates (IaC)
• Monitor API performance and uptime using Prometheus, Grafana, ELK, New Relic, or Datadog

Security & Compliance

• Implement OAuth2, OpenID Connect, JWT, and certificate-based authentication for APIs
• Secure APIs against threats (rate limiting, throttling, WAF integration)
• Apply OWASP API Security Top 10 best practices
• Ensure compliance with PCI-DSS, ISO 27001, GDPR, and regional banking regulations

Collaboration & Process

• Work closely with DevOps and product teams to deliver features
• Participate in Agile ceremonies, sprint planning, and architecture discussions
• Write and maintain API documentation for internal and third-party developers
• Support sandbox environments and developer enablement

Career Growth Opportunity

This position offers a great opportunity for career growth in a critical fintech infrastructure role.