We are looking for an innovative Senior Software Engineer to build custom solutions that solve core Sales and Service challenges. In this role, you will work on projects that have been identified as better suited for development outside of Salesforce. This includes building microservices, creating custom user interfaces, and integrating cutting-edge AI and agentic workflow technologies. You are a strong full-stack developer who is passionate about building the right tool for the job and is excited by the opportunity to redefine what a CRM experience can be. Location: Hybrid (São Paulo) 4 times a week.  About Us: Abstra is a fast-growing, Nearshore Tech Talent services company, providing top Latin American tech talent to U.S. companies and beyond. Founded by U.S.-bred engineers with over 15 years of experience, Abstra specializes in sourcing skilled professionals across a wide range of technologies to meet our clients’ needs, driving innovation and efficiency. Job Description: Key Responsibilities:  * Design, develop, and deploy high-quality, scalable, and secure full-stack applications and microservices on public cloud platforms (AWS/GCP/Azure). * Build custom solutions to address CRM-related business problems that are not a good fit for the Salesforce platform. * Work with modern backend languages (e.g., Python, Go, Node.js) and frontend frameworks (e.g., React). * Collaborate with the Staff CRM Software Engineer to implement innovative solutions involving AI services, large language models (LLMs), and agentic orchestration. * Develop robust APIs and integration services to connect custom applications with Salesforce and other enterprise systems. * Write clean, maintainable, and well-tested code, and participate in a culture of rigorous code reviews. * Contribute to the entire software development lifecycle, from requirements gathering and design to deployment and maintenance.   Required Qualifications:  * Bachelor’s degree in computer science, or a related field, or equivalent practical experience.  * 4-6 years of professional software development experience.   * Strong proficiency in at least one modern programming language such as Python, Go, Java, or TypeScript/Node.js.   * Experience building and deploying applications on a major cloud provider (AWS, GCP, or Azure).   * Experience with modern frontend frameworks like React, Vue.js, or Angular.   * Solid understanding of microservices architecture, RESTful APIs, and event-driven systems.   * Experience with relational and NoSQL databases.   * Bachelor’s degree in computer science, or a related field, or equivalent practical experience.   * Familiarity with open-source CRM systems.   * Experience building applications for Sales, Customer Service, or other CRM-related domains.   * Hands-on experience with AI/ML APIs, vector databases, or agentic frameworks like LangChain.   * Experience with containerization (Docker) and orchestration (Kubernetes).   * Understanding & comprehension of Apex  * Knowledge of the Salesforce platform and its APIs is a plus but not required.   What We Offer: * Opportunities for professional growth and development. * A collaborative and inclusive work environment. * The chance to work on impactful projects with a talented team. * Excellent compensation in USD. * Hardware and software setup.