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Senior Backend Developer

Company: Sizanid Staffing

Location: Indonesia, London

Posted: June 06, 2026

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Position Details

Job Summary

Sizanid Staffing is looking for a skilled Senior Backend Developer to join our dynamic engineering team. The ideal candidate will be responsible for designing, developing, and maintaining robust backend services and APIs that power scalable applications.

Key Responsibilities

  • Develop, test, and deploy backend services and APIs with a focus on performance, scalability, and security.
  • Design and implement data storage solutions including relational and NoSQL databases.
  • Collaborate with frontend developers, product owners, and other stakeholders to define and deliver software requirements.
  • Optimize existing backend systems for reliability and efficiency.
  • Conduct code reviews and mentor junior developers.
  • Participate in architectural design and technology selection.
  • Ensure best practices in code quality, security, and documentation.
  • Contribute t...