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Hi, I'm Cassie Alexander, your Recruiter and guide to joining CSG! We are excited to learn more about you and your unique background. CSG's Systems and API Team designs and develops scalable, secure system architectures and APIs that empower our R&D organization to deliver innovative solutions, enhance operational efficiency, and drive technological innovation. We are seeking a Senior Software Development Engineer to design and implement robust, future-proof systems and APIs. In this role, you will develop secure, well-documented APIs, utilize SMS, MMS, and RCS communication technologies, and create scalable, high-performance systems. Collaborating with systems engineers and cross-functional teams, you will ensure reliability, scalability, and alignment with organizational goals. We are looking for a Senior Software Developer Engineer who will: API Design & Development: Design RESTful APIs adhering to best practices and develop scalable backend services using languages like Python, Java, Go, or C. Integration & Collaboration: Collaborate with front-end developers to integrate APIs with user interfaces and coordinate with DevOps teams for smooth CI/CD processes. Performance Optimization & Scalability: Conduct performance tuning and load testing to ensure APIs handle high traffic efficiently and implement caching strategies. Monitoring & Maintenance: Build telemetry features for monitoring API usage, identifying bottlenecks, and maintaining comprehensive logging & monitoring. Security & Compliance: Ensure compliance with security standards and data privacy regulations, supporting regular code security reviews and vulnerability assessments. Documentation & Support: Create and maintain detailed API documentation and provide Level 3 support for complex issue resolution. Is this opportunity right for you? We are looking for candidates who have: Bachelor’s degree in Computer Science, related field or equivalent experience 6+ years of relevant experience in developing and maintaining robust, scalable APIs Proficiency with programming languages such Python, C/C++, Java, or Go Strong understanding of RESTful design principles Experience working with relational databases such as MySQL and non-relational databases such as NoSQL Knowledge of cloud platforms such as Azure/AWS/GCP, especially serverless functions Knowledge of SMS, MMS, and RCS communication protocols Ability to work in a CLT contract position Ability to read, write, speak and understand the English language in a business environment Our Guiding Principles Impact Always help and empower others, whether they’re colleagues or customers. When our employees set their minds to something, great things happen. Integrity Do what’s right for our customers and our people while being authentic. We treat everyone with trust and respect—that’s just who we are. Inspiration Be bold in the way you think and passionate about the work you do. Test out innovative ideas without the fear of failure. CSGer Perks & Benefits Work from Home Employee Belonging Groups Medical / Dental / Life Insurance Meal Voucher Day-care benefits Paid Vacation, Volunteer, and Holiday Time Off And so much more! #LI-Remote #LI-CA1 Location(s): Brazil Remote Accommodation: If you would like to be considered for employment opportunities with CSG and need special assistance due to a disability or accommodation for a disability throughout any aspect of the application process, please call us at +1 (402) 431-7440 or email us at accommodations@csgi.com. CSG provides accommodations for persons with disabilities in employment, including during the hiring process and any interview and/or testing processes. Our Guiding Principles: Impact: Always help and empower others, whether they’re colleagues or customers. When our employees set their minds to something, great things happen. Integrity: Do what’s right for our customers and our people while being authentic. We treat everyone with trust and respect—that’s just who we are. Inspiration: Be bold in the way you think and passionate about the work you do. Test out innovative ideas without the fear of failure. Our Story: CSG empowers companies to build unforgettable experiences, making it easier for people and businesses to connect with, use and pay for the services they value most. For over 40 years, CSG's technologies and people have helped some of the world's most recognizable brands solve their toughest business challenges and evolve to meet the demands of today's digital economy. By channeling the power of all, we make ordinary customer and employee experiences extraordinary. Our people [CSGers] are fearlessly committed and connected, high on integrity and low on ego, making us the easiest company to do business with and the best place to work. We power a culture of integrity, innovation, and impact across our locations, representing the most authentic version of ourselves to build a better future together. That's just who we are. Learn more about CSG Inclusion & Impact here. Introduce yourself to our recruiters and we'll get in touch if there is a role that seems like a good match. CSG empowers companies to build unforgettable experiences, making it easier for people and businesses to connect with, use and pay for the services they value most. For over 40 years, CSG's technologies and people have helped some of the world's most recognizable brands solve their toughest business challenges and evolve to meet the demands of today's digital economy. By channeling the power of all, we make ordinary customer and employee experiences extraordinary. Our people [CSGers] are fearlessly committed and connected, high on integrity and low on ego, making us the easiest company to do business with and the best place to work. We power a culture of integrity, innovation, and impact across our locations, representing the most authentic version of ourselves to build a better future together. That's just who we are. If not us, then who? Learn more CSG is an Affirmative Action, Equal Opportunity / Veteran / Disabled / Female / Minority / Sexual Orientation / Gender Identity Employer. CSG does not discriminate on the basis of age 40 and over, color, disability, gender identity, genetic information, military or veteran status, national origin, race, religion, sex, sexual orientation or any other applicable status protected by state or local law, are not taken into account in any employment decision. CSG will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor’s legal duty to furnish information. If you would like to be considered for employment opportunities with CSG and need special assistance due to a disability or accommodation for a disability throughout any aspect of the application process, please call us at +1 (402) 431-7440 or email us at accommodations@csgi.com. CSG provides accommodations for persons with disabilities in employment, including during the hiring process and any interview and/or testing processes. For the EEO it's the Law posting, click HERE .