Senior Software Engineer, Backend Development (C# .NET)
AppierTaichung, Taiwan
Posted September 22, 2025
Full Time
About the Company
Appier is an AI-native SaaS company founded in 2012, listed on the Tokyo Stock Exchange's Prime Market. The company specializes in providing cutting-edge AdTech and MarTech solutions to help businesses maximize ROI through intelligent software. With a focus on artificial intelligence and data mining, Appier offers a range of services including marketing and advertising, generative AI, predictive AI, and more, enabling over 1,800 leading companies worldwide to enhance their marketing performance.
Job Description
Appier is seeking a highly skilled Senior Backend Developer specializing in distributed systems and modern backend architecture. The role involves designing, developing, and maintaining scalable, high-performance backend services, optimizing code, and collaborating with cross-functional teams. The ideal candidate will have expertise in microservices, message queues, data persistence, and performance optimization.
Requirements
- Extensive experience in ASP.NET Core backend development
- Advanced proficiency in C# programming and object-oriented principles
- Proven experience in distributed systems and microservice architectures
- Strong expertise in PostgreSQL, MongoDB, and SQL/NoSQL database design
- Proficiency in code-first development and hands-on experience with Entity Framework Core or equivalent ORMs
- Advanced knowledge of RabbitMQ or similar message broker systems
- In-depth understanding of IO-bound operations, threading, parallelism, and asynchronous programming
- Practical experience with Docker and container-based deployment workflows
- Strong analytical and problem-solving skills
- Solid experience in performance tuning and scalability
