Senior Frontend Engineer - Realtime and Personalization at ARM Treasure Data

Tokyo, Tokyo, Japan -

Full Time

Start Date

Immediate

Expiry Date

23 Apr, 26

Salary

0.0

Posted On

23 Jan, 26

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

React, TypeScript, Single Page Applications, State Management, HTTP, REST, GraphQL, Agile, Problem Solving, Performance Tuning, API Contracts, Collaboration, User Interface Development, Data Fetching, Scalability, AI Interactions

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. In this role, you will be the frontend expert within a cross-functional squad. While the backend handles complex models, your challenge is to make those models accessible, responsive, and intuitive for the user. You will design the architecture for how our application manages state, handles complex data, and enables new ways of interacting with agents. You will work out of our local office three days a week, collaborating directly with product managers and designers to ship features that have a tangible impact on our customers' ability to generate value from their data. What You Will Do Translate designs into React applications. You will tackle challenges specific to AI interactions. Partner closely with backend engineers to define API contracts. You will advocate for frontend needs to ensure efficient data fetching and rendering. Assist with system design activities, bringing an experienced perspective to discussions to make the right tradeoffs. Build with a mind towards scalability, performance and operationalization. Keep a pulse on the evolving React and frontend landscape, advising the team on new tools or patterns that increase developer velocity or user satisfaction. About You 5+ years of software engineering experience, with a strong focus on building complex Single Page Applications (SPAs). You have mastery over React, TypeScript, and the modern JS ecosystem. You understand the Virtual DOM, React hooks, and performance tuning deep down. Proficient with modern state management libraries (e.g., Redux Toolkit, React Query/TanStack, or Context API). While you focus on the frontend, you understand HTTP, REST, and GraphQL, and can effectively debug across the network layer. You thrive in agile environments. You are a driver—you identify blockers and remove them. Business-level English proficiency is required. You can effectively communicate complex technical concepts to non-technical stakeholders. Must be able to work in the office 3 times a week. Preferred Qualifications Experience building Chat Interfaces or integrating LLM/Generative AI features (handling streaming tokens, markdown rendering, etc.). Experience working in global teams, coordinating with engineers in different time zones. What We Offer Opportunities for leadership growth, technical mentorship, and introducing new processes. Work with specialists in varied fields—from designers to product managers—to make a powerful product used by major international companies. A flexible and exciting work environment with a hybrid model and competitive benefits. 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

The Senior Frontend Engineer will translate designs into React applications and tackle challenges specific to AI interactions. They will collaborate with backend engineers to define API contracts and ensure efficient data fetching and rendering.