KarieR.co

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

location_onJakarta, Indonesiaschedule15 hours ago
trending_upExperience level:Senior
historyMinimum experience:3+ years
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Job description

Senior Full Stack Developer

Position Overview

We are seeking a Senior Full Stack Developer with a strong backend focus and solid frontend development experience to develop, maintain, and enhance scalable web applications and business systems.

The ideal candidate should be a hands-on developer who is capable of coding independently while also providing technical leadership and guidance to the development team. The role is primarily focused on software development, with approximately 70% backend and 30% frontend responsibilities.

The candidate should have strong hands-on experience in at least one backend technology and framework, together with practical frontend, database, API, and system integration experience.

Key Responsibilities

  • Design, develop, test, and maintain web applications and business systems.
  • Perform hands-on backend development, including services, APIs, databases, and system integrations.
  • Develop frontend components and integrate them with backend services.
  • Provide technical leadership and guidance to developers within the team.
  • Participate in system design, architecture discussions, and technical solution planning.
  • Develop and integrate REST APIs and third-party services.
  • Troubleshoot and resolve application, integration, and performance issues.
  • Conduct code reviews and promote coding standards, best practices, and maintainable solutions.
  • Guide and support junior developers in technical implementation and problem-solving.
  • Contribute to application security, performance, scalability, and maintainability.
  • Work with cross-functional teams to understand requirements and translate them into technical solutions.

Requirements

Requirements

  • 3–5 years of professional software development experience.
  • Strong hands-on coding experience with at least one backend programming language, such as:
    • PHP
    • Python
    • C#
    • Java
    • Node.js
  • Strong hands-on experience with at least one backend framework, such as:
    • Laravel
    • Django
    • .NET / ASP.NET Core
    • Spring Boot
  • Practical frontend development experience with at least one framework or library, such as React.js, together with good knowledge of HTML5, CSS3, and JavaScript.

  • Experience with at least one database technology, such as MS SQL Server, MySQL/MariaDB, PostgreSQL, or NoSQL.

  • Good understanding of REST APIs, JSON, and third-party API integration.

  • Strong working knowledge of Git, including branching, pull requests, and code review practices.

  • Good understanding of object-oriented programming and web application development.

  • Demonstrated ability to technically lead, mentor, and guide developers while remaining hands-on with coding.

  • Strong analytical, troubleshooting, and problem-solving skills.

  • Ability to work independently and collaboratively in a development team.

  • Project management experience is not the primary requirement for this role.

Preferred / Good to Have

  • Experience with CI/CD, Azure, or Docker.
  • Knowledge of application and API security.
  • Experience with query and application performance optimization.
  • Familiarity with scalable system design and design patterns.
  • Experience integrating AI technologies such as OpenAI API, Claude API, or Gemini API.
  • Exposure to Microsoft Power Platform.

Skills mentioned

Lithan
Jakarta, Indonesia
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