Web Application Developer (API)

Overview We are looking for a Back-End Software Engineer with strong Node.js experience to help build and evolve scalable, API-driven systems. This role focuses on developing modern, cloud-based services, supporting distributed architectures, and collaborating with cross-functional teams to deliver reliable, high-quality software.

Key Responsibilities

• Design, develop, and maintain back-end services using Node.js and modern frameworks (e.g., Express, NestJS, or equivalent).
  
  
• Build and support RESTful and/or event-driven APIs, ensuring consistency, performance, and reliability.
  
  
• Participate in the modernization or decomposition of existing systems into modular, service-based architectures.
  
  
• Integrate with third-party services and external APIs while applying best practices for security and error handling.
  
  
• Develop and deploy containerized applications using Docker and support orchestration platforms.
  
  
• Collaborate with DevOps and infrastructure teams to deliver cloud-native solutions in a major cloud environment (AWS or equivalent).
  
  
• Support and enhance CI/CD pipelines to enable automated testing and deployments.
  
  
• Contribute to infrastructure-as-code initiatives to ensure repeatable and maintainable environments.
  
  
• Participate in architectural discussions, code reviews, and technical design sessions.
  
  
• Work within an Agile/Scrum framework, contributing to planning, refinement, demos, and retrospectives.
  
  
• Collaborate with Product, QA, and Data teams to ensure solutions meet functional and non-functional requirements.
  
  

Required Qualifications

• 3 years of professional back-end development experience with Node.js (required).
  
  
• Strong experience building APIs using Node.js frameworks such as Express, NestJS, Fastify, or similar.
  
  
• Solid understanding of asynchronous programming, event loops, and non-blocking I/O.
  
  
• Experience designing service-oriented or microservice-based architectures.
  
  
• Hands-on experience deploying and managing applications in a cloud environment (AWS, Azure, or GCP).
  
  
• Experience with Docker and container-based deployments.
  
  
• Familiarity with CI/CD tools and automated deployment workflows.
  
  
• Experience using Infrastructure-as-Code tools such as Terraform or CloudFormation.
  
  
• Strong understanding of API integration patterns, error handling, and versioning.
  
  
• Experience working in Agile development teams.
  
  
• Proficiency with Git and modern software development best practices.
  
  
• Must reside in Florida or Texas.
  
  

Preferred Qualifications

• Experience with TypeScript in Node.js environments.
  
  
• Familiarity with serverless architectures (e.g., cloud functions, managed API gateways).
  
  
• Experience with event-driven systems, message queues, or streaming platforms.
  
  
• Exposure to monitoring, logging, and observability tools.
  
  
• Knowledge of cloud security best practices and identity management.
  
  
• Experience mentoring junior engineers or contributing to technical leadership initiatives.

Kavaliro provides Equal Employment Opportunities to all employees and applicants. All qualified applicants will receive consideration for employment without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws. Kavaliro is committed to the full inclusion of all qualified individuals. In keeping with our commitment, Kavaliro will take the steps to assure that people with disabilities are provided reasonable accommodations. Accordingly, if reasonable accommodation is required to fully participate in the job application or interview process, to perform the essential functions of the position, and/or to receive all other benefits and privileges of employment, please respond to this posting to connect with a company representative.