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

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

• 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