Mid-Level Software Engineer- Mandarin Required

About Us AC Tech is a leading innovation-driven company focused on delivering advanced solutions that integrate artificial intelligence (AI) and blockchain technology. Our flagship product,

Biomatrix , has already amassed a user base of over 2 million, showcasing its transformative impact on the market. By combining cutting-edge technology with user-centric design, AC Tech continues to redefine industry standards and improve everyday lives. Blockchain plays a central role in our mission, enabling secure, decentralized, and transparent solutions that enhance user trust and operational efficiency. About the Role We are seeking a Mid-Level Software Engineer with 3+ years of professional experience to join our dynamic and growing team. You will work collaboratively with cross-functional teams to design, build, and deploy robust software systems that meet client and business needs. This position emphasizes backend development while encouraging contributions to the full-stack development lifecycle. Responsibilities Design, develop, and maintain scalable backend systems using

Java ,

Python , or

C# . Develop RESTful APIs, manage integrations with third-party services, and ensure high performance and security. Work with

databases

such as

PostgreSQL ,

MongoDB , or

MySQL

for efficient data storage and retrieval. Collaborate with the product and frontend teams to implement interactive and seamless user interfaces (using frameworks like

React

or

Angular ). Optimize cloud deployments using

AWS ,

Azure , or

Google Cloud

services for scalability and performance. Write clean, efficient, and testable code, following best practices in version control (Git) and CI/CD workflows. Debug and resolve production issues to maintain application reliability and uptime. Stay updated on emerging software trends and contribute to improving the development lifecycle and tools. Qualifications Required: Bachelors degree or Master's degree in Computer Science, Software Engineering, or related field, or equivalent professional experience. 3+ years of software development experience, focusing on backend systems and/or full-stack development. Proficiency in at least one backend programming language ( Java ,

Python ,

Node.js , or

C# ). Experience with relational and non-relational databases ( MySQL ,

PostgreSQL , or

MongoDB ). Familiarity with containerization and cloud platforms ( Docker ,

Kubernetes ,

AWS , or

GCP ). Strong problem-solving skills with a focus on delivering scalable and secure solutions. Excellent verbal and written communication skills, with the ability to collaborate across teams. Preferred: Knowledge of

microservices architecture

and asynchronous communication patterns. Experience with

GraphQL

APIs. Hands-on experience with automated testing tools (e.g.,

JUnit ,

pytest , or

Selenium ). Exposure to Web 3.0, blockchain technologies, or distributed systems. Familiarity with DevOps practices, CI/CD pipelines, and tools like

Jenkins

or

GitLab CI .