Senior C# .Net

Amk; Kota Yogyakarta; On-site; IDR 200.000.000 - 300.000.000; Full time

Job summary

An innovative IT consulting firm is looking for a skilled .NET Developer in Yogyakarta. The ideal candidate will have extensive experience in designing and implementing robust .NET applications using C# and ASP.NET. Responsibilities include collaborating with teams, conducting code reviews, and maintaining documentation. Candidates should have a minimum of 3 years in .NET development and be proficient in SQL databases. This role offers a full-time contract for 12 months at the Yogyakarta office.

Qualifications

• Minimum 3 years of professional experience in .NET development.
• Proficient in writing complex SQL queries and database design.
• Experience with API development and software testing.

Responsibilities

• Design and implement .NET applications using C# and ASP.NET.
• Collaborate with teams to gather requirements.
• Conduct code reviews and maintain technical documentation.

Skills

C#

ASP.NET

SQL Server

MySQL

RESTful APIs

Git

Problem-solving

Debugging

Education

Bachelor's degree in Information Technology or related field

Tools

Entity Framework

Kubernetes

Elasticsearch

KeyCloak

Job description

Job Description

Hi We are GeekGarden, a consultant IT company. We are hiring the best candidate for position.

Responsibilities

• Design and implement high‑quality, scalable, and secure .NET applications using C#, ASP.NET, and other .NET technologies.
• Work with relational databases (SQL Server, MySQL, etc.) and write complex queries, stored procedures, and database design.
• Integrate with third‑party services, APIs, and external systems.
• Conduct code reviews and ensure best practices are followed.
• Present work results to the development team or to clients when needed.
• Collaborate with Product Owners, System Architects, and team members to understand requirements and user stories.
• Develop, maintain, and enhance applications using Microsoft .NET technologies.
• Write clean, scalable, and efficient code based on business and technical requirements.
• Perform testing, debugging, and troubleshooting to ensure software quality and reliability.
• Create and maintain technical documentation for code, APIs, and system architecture.
• Ensure compliance with security standards, best practices, and governance requirements.
• Continuously research and explore new technologies to support innovation and improvement.
• Design, code, test, and manage various applications.
• Collaborate with engineering team and product team to establish best products.
• Follow outlined standards of quality related to code and systems.
• Develop automated tests and conduct performance tuning.
• Develop and implement modern web‑based applications using ASP.NET and C#, ensuring performance, scalability, and maintainability.
• Optimize application performance through code review, refactoring, and tuning of SQL queries or application logic.
• Perform unit testing and integration testing to ensure system reliability and smooth deployment processes.
• Participate in code reviews, sprint planning, and continuous improvement processes within the development team.

Qualifications

• Minimum 3 years of professional experience in .NET development (C#, ASP.NET, MVC, .NET Core).
• Strong proficiency in C#, ASP.NET, and related .NET technologies.
• Strong experience with relational databases (SQL Server, MySQL, etc.), writing complex queries, stored procedures, and database design.
• Proficient in using version control tools like Git or TFS.
• Experience with .NET Core, ASP.NET MVC, Web API, Entity Framework, and related tools/libraries.
• Experience with RESTful APIs, SOAP, JSON, and XML for web services integration.
• Excellent troubleshooting and debugging skills.
• Strong teamwork and interpersonal skills with the ability to effectively communicate with technical and non‑technical stakeholders.
• Bachelor's degree in Information Technology, Computer Science, or related field.
• Experience in API development, documentation, and software testing (SIT, UAT, regression, penetration testing).
• Strong knowledge of RDBMS and SQL programming.
• Knowledge of version control systems (Git).
• Strong problem‑solving and debugging skills.
• Experience with KeyCloak, Redis, Elasticsearch, or Kubernetes is an advantage.
• Good communication and collaboration skills.
• Willing to be placed at Yogyakarta or Jakarta office.

Job Types

Full‑time, Temporary, Contract

Location

Yogyakarta, onsite (full WFO)

Additional Information

• Qty : 08 persons.
• Level : Middle up to Senior (more than 03 year's experiences in Software Development using Microsoft Technology (.Net 5 above, C#, Ms. SQL)).
• Target Start date : at least 01 month notice (10 persons join in November, 07 persons join in December 2025).

Contract Length

12 months

Application Question(s)

• Berapa ekspektasi salary kamu? (budget 10 jt)