Job Title: Senior API Developer Job Description We’re Concentrix. A new breed of tech company — Human-centered. Tech-powered. Intelligence-fueled. We create game-changing solutions across the enterprise, that help brands grow across the world and into the future. We are trusted by clients across all major sectors, from up-and-coming success stories to iconic Fortune Global 500 brands in over 70 countries spanning 6 continents. Our game-changers: * Challenge Conventions * Deliver outcomes unimagined * Create experiences that go beyond WOW If this is you, we would love to discuss career opportunities with you. In our Concentrix Catalyst team, you will work with the engine that powers the experience design and engineering capabilities at Concentrix. A leading global solutions company that reimagines everything CX through strategy, talent, and technology. We combine human-centered design, powerful data, and strong tech to accelerate CX transformation at scale. You will be surrounded by the best in the world providing market leading technology and insights to modernize and simplify the customer experience. Within our professional services team, you will deliver strategic consulting, design, advisory services, market research, and contact center analytics that deliver insights to improve outcomes and value for our clients. Hence achieving our vision. We’re a remote-first company looking for the absolute best talent in the world. Experience the power of a game-changing career. \#LI-Remote **Job Title: Senior API Developer** **Qualifications:** + Proven experience in designing, developing, and maintaining RESTful APIs. + Strong proficiency in programming languages such as Java, Python, or Node.js. + Experience with API frameworks like Spring Boot, Express, or Flask. + Knowledge of cloud platforms (e.g., AWS, Azure, or Google Cloud) and deploying APIs in cloud environments. + Expertise in securing APIs using authentication and authorization protocols such as OAuth 2.0, JWT, and API keys. + Knowledge of security vulnerabilities such as SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF). + Solid understanding of relational and NoSQL databases (e.g., MySQL, PostgreSQL, MongoDB) and how to interact with them via APIs. + Experience with performance optimization techniques such as caching, load balancing, and reducing API response times. + Experience with version control systems like Git and familiarity with branching, merging, and versioning practices. + Experience with API documentation tools like Swagger, OpenAPI, or Postman. + Knowledge of automated testing frameworks (e.g., JUnit, Mockito) and API testing tools (e.g., Postman, Newman). + Experience in debugging production issues and applying fixes quickly. **Skills:** + Familiarity with GraphQL or other API paradigms. + Experience with containerization technologies like Docker and orchestration tools like Kubernetes. + Familiarity with CI/CD pipelines and deployment automation. + Experience with API management platforms (e.g., Apigee, AWS API Gateway). **Salary Range:** The base salary range for this position is $$91,457- $137,186 plus incentives that align with individual and company performance. Actual salaries will vary based on work location, qualifications, skills, education, experience, and competencies. Benefits available to eligible employees in this role include medical, dental, and vision insurance, comprehensive employee assistance program, 401(k) retirement plan, paid time off and holidays. The deadline to apply for this position is 12/30/2025 \#LI-Remote \#ConcentrixCatalyst Location: USA, MO, Work-at-Home Language Requirements: Time Type: Physical & Mental Requirements: While performing the duties of this job, the employee is regularly required to operate a computer, keyboard, telephone, headset, and other office equipment. Work is generally sedentary in nature. **If you are a California resident, by submitting your information, you acknowledge that you have read and have access to the Job Applicant Privacy Notice for California Residents (https://www.concentrix.com/resource/job-applicant-privacy-notice-for-california-residents/)** Concentrix is an Equal Opportunity/Affirmative Action Employer including Disabled/Vets. For more information regarding your EEO rights as an applicant, please visit the following websites: •English (https://www.eeoc.gov/sites/default/files/2023-06/22-088\_EEOC\_KnowYourRights6.12.pdf) •Spanish (https://www.eeoc.gov/sites/default/files/2023-06/22-088\_EEOC\_KnowYourRightsSp6.12.pdf) To request a reasonable accommodation please click here (https://jobs.concentrix.com/global/en/reasonable-accomodation) . If you wish to review the Affirmative Action Plan, please click here (https://jobs.concentrix.com/global/en/affirmative-action) .