Application Developer (C#) (Retail/POS)

TL;DR

Application Developer (C#) (Retail/POS): Designing, developing, and implementing POS application components for retail store operations with an accent on C#/.NET, API integrations, and MS SQL stored procedures. Focus on building CI/CD-ready, unit-tested features and providing Level 2/Level 3 support for critical store solution incidents with daily on-site collaboration.

Location: Seoul, Republic of Korea

Company

hirify.global delivers and manages mission-critical technology systems for leading businesses.

What you will do

• Design, develop, and maintain POS application software aligned with retail and store operations requirements.
• Develop, manage, and support API integrations with third-party payment gateways and ERP systems.
• Provide Level 2/Level 3 technical support for critical store solution incidents and resolve issues to minimize disruption.
• Collaborate daily on-site with business and technical stakeholders.
• Provide occasional on-site emergency support at stores or regional offices during urgent incidents, including outside standard hours or weekends.
• Estimate assigned development work and guide features/functional objectives for interested stakeholders.

Requirements

• Minimum 1 year of hands-on C# experience; retail or fashion POS experience is preferred.
• Experience designing, building, and maintaining client/server (C/S) architecture applications.
• Proficiency in C#.NET and ASP.NET.
• Proven experience with API/interface development and integrating POS with payment gateways and/or ERP systems.
• Advanced MS SQL skills, including designing, developing, and optimizing complex stored procedures and database schemas.
• Korean: native-level fluency (spoken and written) is mandatory for communication with local business stakeholders and on-site teams.
• Ability to document technical specifications and operational manuals in Korean.

Nice to have

• Solid understanding of fashion/retail business processes (inventory management, sales tracking, store operations).
• Experience supporting, operating, or implementing large-scale fashion & retail store systems.
• Intermediate English (spoken and written) for internal collaboration and global training.

Culture & Benefits

• Hybrid-friendly culture with a focus on well-being through Be Well programs.
• Access to learning opportunities and certifications (Microsoft, Google, Amazon), plus coaching.
• Continuous feedback and personalized development goals.
• Emphasis on empathy, belonging, and shared success.

Hiring process

• Application process with an option to submit an employee referral during “How Did You Hear About Us”.