Senior Software Engineer - Ruby on Rails at ARM Treasure Data

Tokyo, Tokyo, Japan -

Full Time

Start Date

Immediate

Expiry Date

26 Apr, 26

Salary

0.0

Posted On

26 Jan, 26

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Ruby on Rails, React, TypeScript, AWS, CI/CD, SQL, Data Modeling, Asynchronous Background Job Processing, Frontend Development, Collaboration, User Experience, Technical Design, Observability, Automation, Documentation, Continuous Learning

Industry

Software Development

Description

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. At Treasure Data, we are not just maintaining a platform; we are actively reinventing how marketers interact with data. We are looking for a Senior Frontend Engineer to drive user interface development of our newest strategic initiative: a cutting-edge AI Agent for marketers. As a Senior Software Engineer in the Composable Team, you will design, build, and ship features across our Ruby on Rails APIs and React (TypeScript) web application used by global enterprise customers. Working as part of a distributed team, you’ll collaborate closely with product managers, UX designers, QA testers, and fellow engineers to plan, iterate on, and deliver high-quality enhancements to our composable CDP offering. Responsibilities & Duties: Participate in the team’s rotation to own the development process from discovery to release: break down desired outcomes into smaller work items, forecast timelines, implement, test, and iterate based on feedback. Produce code that is easy for humans to understand and for AI assistants to modify. Collaborate with cross-functional project stakeholders to clarify requirements, advocate for pragmatic trade-offs, and align on user experience and technical design. Monitor and improve user-facing performance, minimize or prevent incidents, and increase operational efficiency through observability and automation. Contribute to software engineering & process standards, documentation, and knowledge sharing. Embody a culture of transparency, collaboration, and continuous learning to deliver customer value. Required Qualifications: Senior level professional software engineering experience building & maintaining web applications in a backend role. Working understanding of the AWS cloud environment, infrastructure as code, and CI/CD practices. Ability to clearly communicate through written methods, and proactively confirm whether your ideas are being correctly understood by your audience. Flexibility in shifting working hours when needed for sporadic synchronous meetings in a team distributed across North America and Japan timezones. Proficiency with Ruby on Rails, common API implementation patterns, and asynchronous background job processing. Proficiency with data modeling in relational databases with standard SQL, and query performance optimization. Ability to learn frontend development skills with support from the team up to a beginner level. Physical Requirements: 3 days at Treasure Data Office About Treasure Data: Treasure Data is the Intelligent Customer Data Platform (CDP) built for enterprise scale and powered by AI. Recognized as a Leader by Forrester and IDC, Treasure Data empowers the world’s largest and most innovative companies to deliver hyper-personalized customer experiences at scale that increase revenue, reduce costs, and build trust. Through unique capabilities such as the Diamond Record, AI Agent Foundry, and AI Decisioning with Real-Time Personalization, Treasure Data enables marketing and CX teams to personalize cross-channel engagement in real-time, optimize marketing spend while increasing ROI, and drive customer lifetime value through more intelligent retention and loyalty. 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!

Responsibilities

As a Senior Software Engineer, you will design, build, and ship features across Ruby on Rails APIs and a React web application. You will also participate in the development process from discovery to release, ensuring high-quality enhancements.