Senior Developer (C#, Python, and PHP) - Indonesia

Job Description This is a remote position. Experience Level: Minimum 5–7 years of relevant professional experience About the Role We are looking for a highly capable Senior Developer to lead the design, development, and optimization of scalable web applications and business systems. This role requires strong technical expertise, hands-on development experience, and the ability to contribute to architecture decisions and technical improvements across projects. The ideal candidate is experienced in building enterprise-grade applications, troubleshooting complex technical issues, and collaborating closely with stakeholders to deliver reliable and maintainable solutions aligned with business objectives. Key Responsibilities Design, develop, enhance, and maintain web applications and internal systems Lead technical discussions, solution architecture, and system design initiatives Translate business and functional requirements into scalable and effective technical solutions Ensure application performance, security, scalability, and maintainability Develop and integrate APIs, third-party services, and database solutions Conduct code reviews and ensure adherence to coding standards and development best practices Troubleshoot and resolve complex technical and system-related issues Collaborate with cross-functional teams to ensure timely and high-quality project delivery Mentor junior developers and support technical knowledge-sharing within the team Contribute to technical documentation, process improvements, and continuous development initiatives Requirements Requirements Minimum 5–7 years of professional experience in software or application development Strong hands-on experience with C#, Python, and PHP Strong understanding of web application development and software architecture Experience working with databases, APIs, and system integrations Familiarity with version control systems and structured development workflows Strong analytical and problem-solving skills with the ability to handle complex technical challenges Ability to work independently while collaborating effectively within a team Experience mentoring or guiding junior developers is an advantage Exposure to cloud technologies or enterprise systems is a plus