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QBA Worldwide Logo

Senior Full Stack Developer

QBA Worldwide

Salary not specified
Nov 6, 2025
Riverwoods, IL, United States of America
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The company is seeking to modernize enterprise-grade applications within their payments ecosystem, with a focus on observability, scalability, resiliency, and accelerated delivery, without compromising on quality or security.

Requirements

  • Strong proficiency in .NET Core / ASP.NET Core, C-Sharp, and RESTful API development.
  • Hands-on experience with modern front-end frameworks such as Angular, React, or Vue.js.
  • Solid experience with SQL and NoSQL databases (e.g., SQL Server, PostgreSQL, MongoDB, Cosmos DB).
  • Expertise in microservices architecture, containerization (Docker, Kubernetes), and cloud platforms (preferably AWS or Azure).
  • Experience implementing CI/CD pipelines using Azure DevOps, Jenkins, or GitHub Actions.
  • Familiarity with event-driven architectures (Kafka, RabbitMQ) and observability tools (Grafana, Prometheus, Splunk, ELK).
  • Strong understanding of secure coding practices, authentication/authorization (OAuth2, JWT), and API gateways.

Responsibilities

  • Design, develop, and deploy scalable full-stack solutions using modern technologies and cloud-native architectures.
  • Drive modernization initiatives for legacy systems, improving performance, maintainability, and observability.
  • Develop RESTful APIs and microservices to support enterprise-level integration and business functionality.
  • Implement automated CI/CD pipelines, test strategies, and observability tools to ensure high-quality, resilient deployments.
  • Collaborate with cross-functional teams to define technical roadmaps and implement best engineering practices.
  • Ensure compliance with security standards and data protection policies within the payments domain.
  • Optimize performance across the stack — from front-end UX to backend data persistence and infrastructure.

Other

  • 8+ years of experience in software development, with at least 3+ years in a senior or lead full-stack role.
  • Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
  • Experience in the payments or financial services domain.
  • Excellent problem-solving, debugging, and performance-tuning skills.
  • Provide technical guidance and mentorship to junior developers.