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Senior Software Engineer - Python & React at FusionHit. Description . We are looking for a Senior Software Engineer to join our fast-paced, dynamic environment at FusionHit. In this role, you will design, build, and deliver sophisticated full-stack web applications that power real-world business solutions. . You will collaborate with a high-performing engineering team to design scalable, high-performance systems using modern technologies such as Python, React, TypeScript, PostgreSQL, and AWS. If you are passionate about clean code, system architecture, cloud-native applications, and solving complex business challenges — this is your opportunity to make a high impact. . Our client operates in the technology industry, delivering innovative and scalable digital solutions to businesses worldwide. This project focuses on building robust, cloud-based applications that support mission-critical workflows and high-availability environments. . Location: Must reside and have work authorization in Latin America. . Availability: Must be available to work with significant overlap with Mountain Standard Time (MST). . The Ideal Candidate Has: . • Minimum 5+ years of professional experience in software development . • Strong programming experience in Python (mandatory) . • Strong experience building modern front-end applications using React and TypeScript (mandatory). . • Solid understanding of Data Structures & Algorithms (DSA . • Experience designing and implementing RESTful APIs and backend services . • Strong knowledge of Microservices architecture and distributed systems concepts . • Hands-on experience with PostgreSQL and relational database design . • Experience working with AWS services (EC2, S3, RDS, Lambda, ECS, or similar) . • Familiarity with CI/CD pipelines and DevOps practices . • Experience writing unit, integration, and end-to-end tests . • Strong understanding of software engineering best practices: clean architecture, code reviews, testing strategies, monitoring, and logging . • Experience with monitoring and observability tools is a plus . • Strong analytical, debugging, and problem-solving skills . • Excellent communication skills in English (C1 preferred, strong B2 may be considered) . Key Responsibilities: . • Design, develop, and deliver scalable full-stack web applications . • Build reusable, maintainable, and high-quality front-end and back-end components . • Architect and implement cloud-native solutions on AWS . • Develop and maintain RESTful APIs and backend services using Python . • Ensure high coding standards, consistency, and performance optimization across projects . • Monitor system performance and resolve production issues within defined turnaround times . • Participate in architecture discussions and contribute to technical decision-making . • Implement secure, scalable, and maintainable database structures . • Write efficient, testable, and well-documented code . • Develop and execute unit, integration, and end-to-end tests . • Collaborate closely with cross-functional teams to meet project timelines . • Contribute to continuous improvement in performance, scalability, and reliability . Perks of Working at FusionHit: . • Certified as a Great Place to Work, offering a supportive and inclusive work culture. . • Work from home position . • Corporate Access to FusionHit Udemy Account . • Personal and Professional Development Courses & Certifications . • Flexible Schedule . • 3 Sick Days per year . • Birthday Off . • Extra Days for Special Occasions . • Team Building Meal Reimbursement . • Equipment Granted . • Monthly Recognitions . • High Impact Committees . Company Location: Brazil.