Senior Backend Software Engineer - Engagement AI Suite

Treasure Data:

At Treasure Data, we’re on a mission to radically simplify how companies use data and AI to create connected customer experiences. Our intelligent customer data platform (CDP) drives revenue growth and operational efficiency across the enterprise to deliver powerful business outcomes.

We are thrilled that Forrester has recognized Treasure Data as a Leader in The Forrester Wave™: Customer Data Platforms For B2C. It's an honor to be acknowledged for our efforts in advancing the CDP industry with cutting-edge AI and real-time capabilities.

Furthermore, Treasure Data employees are enthusiastic, data-driven, and customer-obsessed. We are a team of drivers—self-starters who take initiative, anticipate needs, and proactively jump in to solve problems. Our actions reflect our values of honesty, reliability, openness, and humility.

Your Role:

This is a great opportunity for someone excited about building enterprise-scale customer engagement and campaign management systems. You'll be working on Treasure Data's Engage Studio platform—an AI-first engagement engine that enables intelligent omnichannel orchestration and personalized customer journeys. If you're passionate about high-performance backend systems, event-driven architectures, and collaborating with a tight-knit team that ships fast, we encourage you to apply!

Responsibilities:

• Building and enhancing multi-channel campaign management and delivery infrastructure at enterprise scale
• Designing and implementing event-driven, serverless architectures for customer engagement
• Writing clean, efficient Ruby code (mostly Rails) with a focus on performance and scalability
• Implementing and optimizing delivery pipelines for email, push notifications, SMS, and other communication channels using AWS services
• Working with other engineers, PMs, and designers to design scalable solutions for high-traffic multi-channel delivery systems
• Operating and maintaining production systems including monitoring, alerting, and on-call rotations

Job Requirements:

• 5+ years of professional software engineering experience
• Strong Ruby / Ruby on Rails skills
• Experience with event-driven, serverless architecture design and operations
• Comfortable with AWS or similar cloud setups
• Solid SQL and experience with relational DBs
• Problem-solving abilities and innovative thinking
• Good communicator and team collaborator
• Openness to feedback and continuous learning
• Business-level English

Bonus Experience (Not Required, but great if you have):

• Experience building robust, high-traffic service and high-throughput delivery architectures
• Experience designing and implementing optimal monitoring system operations using tools like Datadog and CloudWatch
• Experience with Terraform or other IaC tools
• Experience with AI coding tools (Claude Code, GitHub Copilot, etc.) for efficient development
• Experience working with colleagues across different time zones and remote work environments
• Frontend development experience with React and TypeScript

Physical Requirements:

3 Days at Treasure Data KK Office 

Our Dedication to You:

We value and promote diversity, equity, inclusion, and belonging in all aspects of our business and at all levels. Success comes from acknowledging, welcoming, and incorporating diverse perspectives.

Diverse representation alone is not the desired outcome. We also strive to create an inclusive culture that encourages growth, ownership of your role, and achieving innovation in new and unique ways. Your voice will be heard, and we will help amplify it.