Our client is a leading e-commerce marketplace platform in Japan, offering one of the largest online shopping experiences in the country. They provide a platform that connects millions of shoppers with thousands of merchants, focusing on high-quality user experience, scalability, and innovation in online commerce.

We are looking for a proactive Frontend Engineer with experience in JavaScript, HTML, CSS, and React/Node.js, strong skills in performance, architecture, testing, and security, who can collaborate effectively, take ownership, and drive solutions for a large-scale e-commerce platform.

Responsibilities

• Defined requirements, designed, developed, tested, and deployed frontend features for a large-scale e-commerce platform
• Collaborated with product managers, backend engineers, and cross-functional teams
• Monitored system stability and performance, and implemented performance optimizations
• Improved frontend architecture through refactoring and code optimization
• Troubleshot production issues and ensured high system reliability

Technologies

• JavaScript, HTML, CSS
• React.js / Node.js
• Git
• Unit testing (Jest or similar frameworks)

Key Skills

• Frontend performance optimization
• Web security best practices
• System design and architecture
• Unit and integration testing
• Collaboration in an international engineering environment

Job Level
Middle/Senior

Senior (at least around 7 year+ of professional experience or the equivalent skills)

Mandatory Qualifications:

- Development experience with JS, HTML, CSS for more than 3 years

- Development experience with React.js or Node.js

- Deep understanding of frontend performance optimization

- Knowledge of Web security

- Experience of system design

- Experience of testing (Unit Test, Integration Test)

- Communication skill in English    　

Desired Qualifications:

- Experience with ESLint

- Experience with unit testing implementation in JavaScript (Jest, Intern, WDIO)

- Ability to design front-end architecture

- DevOps experience

- Experience of Git

- Always act in active way and lead to the solution

 Languages

• English: Fluent
• Japanese: Optional / a plus

Work Environment

• Fast-paced, dynamic global environment with collaborative teams across multiple locations

Salary: ¥6.5M – ¥11M JPY per year
Location: Hybrid (4 days in the office, 1 day remote)
Office Location: Tokyo, Japan
Working Hours: Flexible schedule with core hours from 11:00 AM to 3:00 PM
Visa Sponsorship: Available
Language Requirement: English only

Apply now or contact us for further information:
Aleksey.kim@tg-hr.com

Our client is a leading e-commerce marketplace platform in Japan, offering one of the largest online shopping experiences in the country. They provide a platform that connects millions of shoppers with thousands of merchants, focusing on high-quality user experience, scalability, and innovation in online commerce.

We are looking for a proactive Frontend Engineer with experience in JavaScript, HTML, CSS, and React/Node.js, strong skills in performance, architecture, testing, and security, who can collaborate effectively, take ownership, and drive solutions for a large-scale e-commerce platform.

Responsibilities

• Defined requirements, designed, developed, tested, and deployed frontend features for a large-scale e-commerce platform
• Collaborated with product managers, backend engineers, and cross-functional teams
• Monitored system stability and performance, and implemented performance optimizations
• Improved frontend architecture through refactoring and code optimization
• Troubleshot production issues and ensured high system reliability

Technologies

• JavaScript, HTML, CSS
• React.js / Node.js
• Git
• Unit testing (Jest or similar frameworks)

Key Skills

• Frontend performance optimization
• Web security best practices
• System design and architecture
• Unit and integration testing
• Collaboration in an international engineering environment

Job Level

Middle/Senior

Senior (at least around 7 year+ of professional experience or the equivalent skills)

Mandatory Qualifications:

- Development experience with JS, HTML, CSS for more than 3 years (ideally more than 7 years)

- Development experience with React.js or Node.js

- Deep understanding of frontend performance optimization

- Knowledge of Web security

- Experience of system design

- Experience of testing (Unit Test, Integration Test)

- Communication skill in English    　

Desired Qualifications:

- Experience with ESLint

- Experience with unit testing implementation in JavaScript (Jest, Intern, WDIO)

- Ability to design front-end architecture

- DevOps experience

- Experience of Git

- Always act in active way and lead to the solution

 Languages

• English: Fluent
• Japanese: Optional / a plus

Work Environment

• Fast-paced, dynamic global environment with collaborative teams across multiple locations

Salary: ¥6.5M – ¥11M JPY per year
Location: Hybrid (4 days in the office, 1 day remote)
Office Location: Tokyo, Japan
Working Hours: Flexible schedule with core hours from 11:00 AM to 3:00 PM
Visa Sponsorship: Available
Language Requirement: English only

Apply now or contact us for further information:
Aleksey.kim@tg-hr.com

Our client, a fast-growing IT startup company, is looking for a Senior Site Reliability Engineer (Global Product Team).

Salary range: 8,500,000 to 12,000,000 yen per year.

They are developing and delivering an AI-powered data platform for industry, providing value not only to customers in Japan but also across the US and ASEAN countries.

The company is experiencing rapid global expansion and is building a strong international engineering organization. They are seeking talented engineers who want to play a key role in building scalable, reliable platforms that support global products.

Their engineering organization is entering an exciting new phase, opening opportunities not only to Japanese-speaking professionals but also to global talent from around the world.

They are looking for engineers with strong technical expertise, reliability engineering experience, and leadership capabilities who can help shape the reliability culture of their growing engineering team.

Mission for this role

You will join the Incubation Team, which functions like an internal startup within the company.

The team’s mission consists of three pillars:

1. Create more products Continuously launch new products that solve customer problems.
2. Create stronger teams Build strong development teams capable of driving product growth.
3. Create structured ways to accelerate development Establish repeatable systems to speed up product creation and delivery.

The team is currently preparing for the official launch of a new product, and ensuring reliability and scalability is critical for this phase.

As an SRE, you will play a key role in designing the reliability and operational foundation of this new product.

Responsibilities

Design reliability, scalability, and operability from the ground up to support a rapidly growing product.

Collaborate closely with engineering teams to embed reliability and performance into product design.

Build automation-first systems for infrastructure, deployments, scaling, and incident prevention to ensure sustainable operations.

Design and operate internal platforms and DevOps practices such as CI/CD pipelines, development environments, and testing environments to maximize developer productivity.

Define and operate SLIs and SLOs, enabling data-driven reliability decisions aligned with product strategy.

Establish incident response processes with a strong focus on learning, prevention, and continuous improvement.

Design and operate cloud infrastructure (primarily GCP) with security and compliance considerations.

Act as a technical leader helping to establish and promote SRE culture within the engineering organization.

Requirements

• 7+ years of hands-on experience in software development.
• 5+ years of experience in an SRE team or a closely related role (e.g., platform engineering, reliability engineering).
• Experience designing, building, and operating architectures using cloud services.
• Experience applying Infrastructure as Code (IaC) to manage scalable and repeatable infrastructure.
• Hands-on operational experience with container orchestration technologies such as Kubernetes.
• Experience designing, building, and operating CI/CD pipelines, with a focus on reliability and delivery safety.
• Experience developing and operating web applications, including production troubleshooting and performance considerations.
• Fluent in English, able to understand complex, context-heavy discussions and collaborate effectively with a multicultural English speaking team.

Preferred Qualifications

• Experience designing and operating distributed systems.
• Experience in designing, developing, and operating backend systems for high-traffic web applications.
• Experience designing, building, and operating systems on Google Cloud Platform (GCP).
• Experience designing and operating monitoring and observability platforms, such as Datadog.
• Experience promoting and embedding SRE culture within an organization (e.g., team formation, enabling other teams, education, and advocacy).
• Hands-on SRE experience in an engineering organization with 50+ engineers.
• Solid foundational knowledge of networking concepts.

Technology Environment

*Frontend: TypeScript, React, Next.js
*Backend: TypeScript, Rust (Axum), Node.js (Express, Fastify, NestJS)
*Infrastructure: Docker, Google Cloud Platform (GCP), Kubernetes, Istio, Cloudflare
*Event Bus: Cloud Pub/Sub
*DevOps: GitHub, GitHub Actions, ArgoCD, Kustomize, Helm, Terraform
*Monitoring / Observability: Datadog, Mixpanel, Sentry
*Data: CloudSQL (PostgreSQL), AlloyDB, BigQuery, dbt, trocco
*API: GraphQL, REST, gRPC
*Authentication: Auth0
*Other Tools: GitHub Copilot, Figma, Storybook

Hybrid Position

Visa Support Available

Apply now or contact us for further information:
Aleksey.kim@tg-hr.com

Our client, a fast-growing IT startup company, is looking for a Senior Site Reliability Engineer (Global Product Team).

Salary range: 8,500,000 to 12,000,000 yen per year.

They are developing and delivering an AI-powered data platform for industry, providing value not only to customers in Japan but also across the US and ASEAN countries.

The company is experiencing rapid global expansion and is building a strong international engineering organization. They are seeking talented engineers who want to play a key role in building scalable, reliable platforms that support global products.

Their engineering organization is entering an exciting new phase, opening opportunities not only to Japanese-speaking professionals but also to global talent from around the world.

They are looking for engineers with strong technical expertise, reliability engineering experience, and leadership capabilities who can help shape the reliability culture of their growing engineering team.

Mission for this role

You will join the Incubation Team, which functions like an internal startup within the company.

The team’s mission consists of three pillars:

1. Create more products Continuously launch new products that solve customer problems.
2. Create stronger teams Build strong development teams capable of driving product growth.
3. Create structured ways to accelerate development Establish repeatable systems to speed up product creation and delivery.

The team is currently preparing for the official launch of a new product, and ensuring reliability and scalability is critical for this phase.

As an SRE, you will play a key role in designing the reliability and operational foundation of this new product.

Responsibilities

Design reliability, scalability, and operability from the ground up to support a rapidly growing product.

Collaborate closely with engineering teams to embed reliability and performance into product design.

Build automation-first systems for infrastructure, deployments, scaling, and incident prevention to ensure sustainable operations.

Design and operate internal platforms and DevOps practices such as CI/CD pipelines, development environments, and testing environments to maximize developer productivity.

Define and operate SLIs and SLOs, enabling data-driven reliability decisions aligned with product strategy.

Establish incident response processes with a strong focus on learning, prevention, and continuous improvement.

Design and operate cloud infrastructure (primarily GCP) with security and compliance considerations.

Act as a technical leader helping to establish and promote SRE culture within the engineering organization.

Requirements

• 7+ years of hands-on experience in software development.
• 5+ years of experience in an SRE team or a closely related role (e.g., platform engineering, reliability engineering).
• Experience designing, building, and operating architectures using cloud services.
• Experience applying Infrastructure as Code (IaC) to manage scalable and repeatable infrastructure.
• Hands-on operational experience with container orchestration technologies such as Kubernetes.
• Experience designing, building, and operating CI/CD pipelines, with a focus on reliability and delivery safety.
• Experience developing and operating web applications, including production troubleshooting and performance considerations.
• Fluent in English, able to understand complex, context-heavy discussions and collaborate effectively with a multicultural English speaking team.

Preferred Qualifications

• Experience designing and operating distributed systems.
• Experience in designing, developing, and operating backend systems for high-traffic web applications.
• Experience designing, building, and operating systems on Google Cloud Platform (GCP).
• Experience designing and operating monitoring and observability platforms, such as Datadog.
• Experience promoting and embedding SRE culture within an organization (e.g., team formation, enabling other teams, education, and advocacy).
• Hands-on SRE experience in an engineering organization with 50+ engineers.
• Solid foundational knowledge of networking concepts.

Technology Environment

*Frontend: TypeScript, React, Next.js
*Backend: TypeScript, Rust (Axum), Node.js (Express, Fastify, NestJS)
*Infrastructure: Docker, Google Cloud Platform (GCP), Kubernetes, Istio, Cloudflare
*Event Bus: Cloud Pub/Sub
*DevOps: GitHub, GitHub Actions, ArgoCD, Kustomize, Helm, Terraform
*Monitoring / Observability: Datadog, Mixpanel, Sentry
*Data: CloudSQL (PostgreSQL), AlloyDB, BigQuery, dbt, trocco
*API: GraphQL, REST, gRPC
*Authentication: Auth0
*Other Tools: GitHub Copilot, Figma, Storybook

Hybrid Position

Visa Support Available

Apply now or contact us for further information:
Aleksey.kim@tg-hr.com