Senior Software Engineer, Core Services (Ingestion)
Treasure AI:
Treasure AI is the agentic experience platform built to acquire, retain, and grow your most valuable customers. Powered by AI, Treasure AI is shaped by human creativity and always-on through continuous, context-driven action.
Furthermore, Treasure AI 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.
About the Ingestion Team
The Ingestion team owns the entry point into the Treasure AI platform. We reliably ingest high-volume event data from external sources, apply safe and programmable transformations, buffer data durably, and deliver it to multiple downstream storage and processing systems.
These pipelines form the foundation for analytics, personalization, and AI-driven use cases across the platform. As event volumes scale into the billions per day, the team plays a critical role in enabling customer growth, maintaining platform reliability, and preparing the system for multi-fold increases in traffic in a predictable and cost-efficient way.
Your Role
As a Senior Software Engineer on the Core Services (Ingestion) team, you will:
Design, build, and operate large-scale backend services for real-time and near-real-time data ingestion
Own major components or services end-to-end, from design through production operations
Improve system reliability, scalability, and cost efficiency under high and unpredictable traffic
Collaborate with product, customer success, and other engineering teams to support customer onboarding and growth
Participate in on-call rotations and take ownership of production issues and incident follow-ups
Use metrics, monitoring, and data to guide engineering decisions
Contribute clean, well-tested code and actively participate in design and code reviews
Mentor junior engineers and raise the technical bar of the team through example
About You
You are an experienced backend engineer who enjoys working on distributed systems and operating software in production. You:
Have 3+ years of professional software engineering experience (or equivalent practical experience)
Have built and maintained backend or distributed systems at scale
Understand reliability, availability, and failure modes in production environments
Are comfortable owning services with real customer and business impact
Write clear, maintainable, and well-tested code
Communicate effectively in a distributed, global team
Are comfortable working primarily with Kotlin and Java, and open to learning new tools and technologies
Have experience with cloud platforms such as AWS
Business-level English proficiency
Bonus Points
Experience with streaming or real-time data systems (Kafka, Kinesis, Flink, Spark)
Experience scaling systems by 3–5× or more
Familiarity with infrastructure as code, observability, or CI/CD
Open-source contributions
Physical Requirements:
3 days in Treasure AI 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.
Agencies and Recruiters:
We cannot consider your candidate(s) without a contract in place. Any resumes received without having an active agreement will be considered gratis referrals to us. Thank you for your understanding and cooperation!
- Department
- Engineering | R&D
- Role
- Senior Software Engineer
- Locations
- Tokyo, Japan
- Remote status
- Hybrid
- Yearly salary
- JPY9,000,000 - JPY14,000,000
- Employment type
- Full-time
- Employment level
- Professionals
About Treasure AI
Treasure AI moves marketing and data teams beyond legacy martech SaaS toward autonomous, ROI-driven AI agents that operate continuously, while keeping the human in the loop. With built-in governance, Treasure AI is powered by an always-up-to-date understanding of each customer for AI to act on.
The result is always-on marketing execution that compounds over time: smarter engagement, stronger retention, and measurable growth.
Treasure AI’s agentic experience platform is available across web, mobile, and desktop — bringing your customer intelligence to every workflow, wherever your team works.