★ Backend Engineer: New AI Agent Product | Platform Development (Chatbot/Payment)

• Business Level Japanese REQURIED

◆ Fully Remote Work

◆ Famous Venture Company

◆ Global Environment

◆ Annual Salary: 6 million ~ 12 million yen.

【About the company】

The company is a venture firm with the mission of "weaving information with people and technology to bring excitement to everyday life." As a SaaS company focused on marketing, they support clients in maximizing their Customer Lifetime Value (LTV).

Through their proprietary two-way communication tool, they can provide end-to-end support, from customer acquisition to CRM, aiming to maximize the customer's brand experience. They continue to evolve and expand as a company alongside market growth, including integrating highly advanced AI technology.

This environment allows you to link your career growth with the company's expansion and take on new challenges. They welcome individuals who are ready to grow continuously with a sense of "excitement."

【Business】

①Development and operation of self-developed chat forms

②LINE Official Account Induction Solution

③Chat-Type Entry Form for Maximizing Ad Effectiveness

④LINE Follow-Up Communication Service

⑤Chat Form for Retention Support

⑥AI-Powered Conversational Commerce Product

【 Job Description】

【Recruitment Background】

Currently, many companies use multiple marketing tools, but their user data is fragmented and not fully utilized. As a result, websites remain mere "information platforms," and there is still significant room to provide new data-driven experiences.

While it is common to use ad agencies for new user acquisition, there are still many opportunities for businesses to take a more proactive role in their marketing activities and improve cost efficiency. By addressing these challenges and providing a consistent experience based on a holistic understanding of the user, companies can build long-term relationships and acquire customers more effectively.

Based on its accumulated marketing expertise, the company plans to tackle these challenges by developing a new AI agent service.

■The Project You'll Be Working On

The company is working on a major challenge: to evolve its existing suite of marketing services into a new AI agent service using AI-driven development.

This is a significant undertaking that will run in parallel with the operation of existing services. The CTO and two Senior Engineers are already involved, but they need more dedicated resources. They are looking for someone to join the team and lead this crucial project as a full-time member.

■In-House Product Series

This is a series of SaaS products designed to help companies with their marketing activities, with the goal of improving their Conversion Rate (CVR) and Lifetime Value (LTV).

The product has been implemented by approximately 800 companies across a wide range of industries, including D2C, beauty, and finance.

【Responsibilities】

Designing and developing new features for our in-house products.

Improving and maintaining existing features.

Researching and testing new technologies and considering their application to the product.

Collaborating with Product Managers, Product Owners, and AI Engineers to define specifications and improve quality.

【Mission】

Your mission is to drive product growth by handling the entire process from specification design to development and operation, all to bring the product roadmap to life.

【Position Highlights】

You can work on product development that uses cutting-edge AI technology and the latest T3Stack with TypeScript.

You'll be able to apply AI beyond just internal FAQs to the unique and expansive domain of "marketing processes x customer service."

The company has an environment where engineers can actively discuss architecture and technology choices, making it easy to see your skills grow.

The team is mostly composed of international engineers, so you'll be able to work with a diverse and global group of people.

【Team Culture】

Flexible Work: The team is highly flexible, with many members working remotely or from regional offices.

Chat-First Communication: Communication is primarily done through Slack. For daily check-ins, the team uses Huddles to quickly resolve issues.

Global Team: With international members on the team, they are actively engaged in English communication.

Proactive Innovation: The team actively adopts cutting-edge technologies, viewing them as a means to achieve their goals, rather than as a goal in themselves.

【Development Environment】

■Languages (Frameworks)

Backend: JavaScript , jQuery), TypeScript , ), PHP (Laravel)

Frontend: JavaScript (jQuery), TypeScript (React, )

AI: Python

Cloud Infrastructure: Azure

Database: MongoDB, AtlasDB

Analytics Platform: Zoho Analytics, BigQuery, Google Cloud Storage

CI: GitHub Actions

Source Code Management: GitHub

Monitoring: Datadog, Sentry, New Relic

UI/UX: Figma

Backlog Management: Backlog, Jira

Communication: Slack, Notion, miro, Zoom

■Background on Technology Selection

The company's backend development primarily uses In the initial phase, services were built and operated using JavaScript ) + PHP (Laravel). However, because TypeScript is more efficient for development teams of several dozen people, the main language was switched to TypeScript a few years ago.

Currently, the team in Japan uses a tech stack of TypeScript (React, , ), while the offshore team continues to use the initial tech stack. The company is now planning a full re-architecture to a T3Stack, with the intention of rebuilding its services around TypeScript ). New services will be developed with this new stack, with the only exception being the AI component, which will continue to use Python.

【 Requirements】

Required

■Experience

・Backend development experience for web services

• Static typing languages (Java / Go / TypeScript, etc.): 1+ years

• Or dynamic typing languages (PHP / Ruby / Python, etc.): 3+ years

・One of the following is required (1+ years)

‐ Planning and implementation experience related to development cycle efficiency, such as CI/CD implementation and test automation

‐ Experience coordinating and negotiating with internal/external stakeholders from an engineering perspective

‐ Experience in help desk/technical support/support engineering

■Skills

・Japanese language proficiency equivalent to JLPT N1 level

■Knowledge

・Fundamental Information Technology Engineer certification or equivalent knowledge

・Knowledge of project management

・Knowledge of observability

Preferred

・Experience leading a team

・Experience building, operating, and maintaining infrastructure using Kubernetes services (e.g., EKS, GKE, AKS)

・Development experience using Agile/Scrum methodologies

・Development experience utilizing generative AI

・Experience launching services through personal development projects

・Experience solving highly complex challenges

‐ Experience managing technical debt with ROI considerations

‐ Experience resolving large-scale technical debt

‐ Experience handling high-traffic, high-load systems

【Working Hours】

Flextime System

【Holidays】

・Saturday/Sunday/National Holiday

・Annual Paid Leave

・New Year Holiday

・Parental Leave

・Congratulations & Condolence Leave

【Welfare】

• 5,000 yen/month remote work allowance

• Up to ¥10,000/month allowance for book purchases

• Remote work environment enhanced by remote HQ

Reference

• Various qualification allowances for engineering-related qualifications

• GitHub Copilot For Business , GitHub Copilot X for full-time engineers

• OpenAI paid account (application required)

Communication allowance (5,000 yen per month)

Commuting allowance: commuting expenses paid (up to 30,000 yen)

Housing allowance: Rent subsidy system (conditions vary depending on years of employment)

*Rent subsidy...20,000 yen (within 3km radius) for those who have worked for less than 3 years, 30,000 yen (no distance specified) for those who have worked for more than 3 years

Social insurance: fully provided

Paid holidays are encouraged (e.g., anniversaries, GW, etc.)

In-house massage (once a month, company pays the cost)

Celebration and condolence expenses (congratulatory and sympathy money)

Maternity and paternity leave

Lunch subsidy

Lending of PCs

Second job: Permitted (subject to company regulations)