Senior Software Engineer, Backend Development (BotBonnie)

About Appier

Appier is a software-as-a-service (SaaS) company that uses artificial intelligence (AI) to power business decision-making. Founded in 2012 with a vision of democratizing AI, Appier’s mission is turning AI into ROI by making software intelligent. Appier now has 17 offices across APAC, Europe and U.S., and is listed on the Tokyo Stock Exchange (Ticker number: 4180). Visit for more information.

About the role

We are seeking skilled and motivated Senior Software Engineer, Backend Development(BotBonnie) to join our dynamic team. As a Senior Backend Development (BotBonnie), you will play a crucial role in designing, developing, and maintaining the server-side applications that power our web.

Responsibilities

• Develop efficient and scalable backend services using Node.js, Express.js, and other relevant technologies.
• Collaborate with cross-functional teams, including frontend developers, product managers, and designers, to design and implement robust APIs and web services.
• Ensure the performance, security, and reliability of server-side applications, identifying and resolving bottlenecks and bugs as necessary.
• Integrate with databases and data storage solutions, such as MongoDB, MySQL, Redis, RedShift or other NoSQL databases.
• Implement unit tests and conduct code reviews to maintain high code quality and foster a collaborative development environment.
• Participate in architectural discussions and contribute innovative ideas to improve system architecture and performance.
• Stay up-to-date with the latest trends and advancements in Node.js and backend technologies to propose suitable improvements to existing systems.
• Troubleshoot and debug production issues, providing timely resolutions and minimizing downtime.
• Optimize applications for maximum speed and scalability, considering factors like caching, load balancing, and distributed systems.
• Continuously improve development processes and best practices to ensure efficient and reliable software delivery.
• Collaborate with Data Scientists and the AI Agent team to develop LLM-powered intelligent response systems.

About you

[Minimum qualifications]

• 5+ years of experience in software development
• Ability to build web services on Linux
• Proficient in one or more of the following languages: Python/Scala/Go/Java/C++/Javascript
• Good knowledge of Network API Design ( e.g. REST or GraphQL).
• Experience in working with databases, both relational and NoSQL, and ability to write efficient queries, such as MongoDB, MySQL, BigQuery
• Experience with Git, GitHub workflows, and CI/CD automation using GitHub Actions.
• Familiar with one of the following cloud platforms: AWS, GCP.
• Proactive, good interpersonal and problem-solving skills.
• Experience with LLM ecosystems, including AI-assisted development tools (e.g., Claude, ChatGPT), prompt engineering, reusable AI skills, and Model Context Protocol (MCP)-based services or integrations.

[Preferred qualifications]

• BS/MS degree in Computer Science or related field.
• Technical leadership experiences
• Design and architect large scale distributed systems.
• Docker container & k8s related experiences
• Proficiency in JavaScript and server-side technologies like Node.js and Express.js.
• Experience with Cloud deployment using Terraform.
• Good knowledge of asynchronous programming or event driven programming
• Experience with API integration for common social platforms such as Line, Messenger, and Instagram.

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