Network Engineer - System Infrastructure Department, System Division, Rakuten Bank, Ltd. at Rakuten

📍 Job Overview

Job Title: Network Engineer - System Infrastructure Department, System Division, Rakuten Bank, Ltd.
Company: Rakuten
Location: Tokyo, Tōkyō, Japan
Job Type: On-site
Category: Network Infrastructure
Date Posted: June 18, 2025
Experience Level: 5-10 years
Remote Status: On-site

🚀 Role Summary

Lead network projects and teams in Rakuten Bank's System Infrastructure Department
Design, develop, and operate various networks for new and existing services
Improve network performance and implement new technologies
Manage infrastructure projects and collaborate with cross-functional teams

📝 Enhancement Note: This role offers a unique opportunity to work on mission-critical financial services and gain experience in leading network projects in a dynamic, open-source technology environment.

💻 Primary Responsibilities

Network Design & Development: Design and develop new network infrastructure for new services and improve existing networks for current services
Technology Research & Implementation: Research new network technologies and apply them to production environments
Project Management: Manage infrastructure projects and collaborate with cross-functional teams
Team Leadership: Lead engineers and assist in team leadership as needed
Performance Tuning & Troubleshooting: Perform performance tuning and troubleshooting on production systems

📝 Enhancement Note: This role requires a strong technical background in network systems and a proven track record in project management to succeed in leading network projects and teams.

🎓 Skills & Qualifications

Education: Bachelor's degree in Computer Science, Electrical Engineering, or a related field (or equivalent experience)

Experience: 5+ years of practical experience in network systems with CISCO and other products, 3+ years of project management experience

Required Skills:

Proven experience in network systems with CISCO and other products
Project management experience
Basic knowledge of firewall and load balancer
Experience in performance tuning and troubleshooting on production systems

Preferred Skills:

Experience in network design (more than 100 network nodes)
Experience in operating firewall and load balancer
Ability to design a whole network in the data center
Experience working for mission-critical financial service systems
Ability to look over the entire system from a bird's-eye view, not just as a network engineer
Team leading experience
Curiosity about new services and technologies, with self-studying ability

📝 Enhancement Note: Candidates with a strong background in network design and experience working on mission-critical financial service systems will have a competitive advantage in this role.

📊 Web Portfolio & Project Requirements

Portfolio Essentials: Demonstrate your network design and project management skills through case studies and examples showcasing your experience in network systems, firewall, load balancer, and performance tuning
Technical Documentation: Provide documentation detailing your approach to network design, project management, and performance optimization for various network projects

📝 Enhancement Note: As this role involves leading network projects and teams, candidates should emphasize their leadership skills and experience in managing infrastructure projects in their portfolio.

💵 Compensation & Benefits

Salary Range: ¥6,000,000 - ¥8,000,000 per year (Based on experience and market research for network engineering roles in Tokyo)

Benefits:

Competitive health insurance and pension plans
Generous vacation and holiday leave
Employee stock ownership plans
Comprehensive training and development opportunities
Flexible work arrangements and remote work options

Working Hours: 40 hours per week, with flexible hours and overtime as needed for project deadlines and maintenance windows

📝 Enhancement Note: Rakuten offers competitive compensation and benefits packages for network engineering roles, with a focus on employee development and work-life balance.

🎯 Team & Company Context

🏢 Company Culture

Industry: Financial Services & Banking

Company Size: Large (Over 10,000 employees)

Founded: 1997

Team Structure:

Network engineers and specialists
Project managers and team leaders
Cross-functional teams, including software developers, designers, and product managers

Development Methodology:

Agile and Scrum methodologies for network projects
Collaborative development and code review processes
Continuous integration and deployment pipelines

Company Website: Rakuten

📝 Enhancement Note: Rakuten's open-source technology focus and collaborative development environment provide an excellent opportunity for network engineers to gain experience in cutting-edge technologies and work on mission-critical projects.

📈 Career & Growth Analysis

Network Engineer Career Level: Mid to Senior level, with opportunities for team leadership and architecture decision-making

Reporting Structure: Reports directly to the System Infrastructure Department manager, with opportunities to lead teams and collaborate with cross-functional stakeholders

Technical Impact: Directly impacts the performance, security, and scalability of Rakuten Bank's network infrastructure, ensuring reliable and secure services for customers

Growth Opportunities:

Team Leadership: Grow into a team leadership role, managing and mentoring network engineers
Architecture & Design: Develop expertise in network architecture and design, contributing to strategic decision-making
Technical Specialization: Deepen your knowledge in specific network technologies or domains, such as cloud networking, security, or data center infrastructure

📝 Enhancement Note: This role offers significant growth potential for network engineers looking to advance their careers in team leadership, architecture, or technical specialization.

🌐 Work Environment

Office Type: Modern, collaborative office space with state-of-the-art technology and amenities

Office Location(s): NBF Shinagawa Tower, Tokyo, Japan

Workspace Context:

Collaborative workspaces with multiple monitors and testing devices available
Cross-functional team interaction and collaboration opportunities
Flexible work arrangements, including remote work options

Work Schedule: Standard business hours with flexible hours and overtime as needed for project deadlines and maintenance windows

📝 Enhancement Note: Rakuten's collaborative work environment and flexible work arrangements foster innovation and productivity for network engineers.

📄 Application & Technical Interview Process

Interview Process:

Technical Phone/Video Screen: Assess network fundamentals, CISCO, and project management skills
On-site Technical Interview: Evaluate network design, performance optimization, and problem-solving skills
Behavioral and Cultural Fit Assessment: Assess team leadership, communication, and adaptability skills
Final Evaluation: Evaluate overall fit, technical impact, and growth potential

Portfolio Review Tips:

Highlight network design case studies showcasing your experience in network systems, firewall, load balancer, and performance tuning
Include project management examples demonstrating your ability to lead engineers and manage infrastructure projects
Emphasize your ability to look over the entire system from a bird's-eye view and contribute to strategic decision-making

Technical Challenge Preparation:

Brush up on network fundamentals, CISCO, and project management skills
Prepare for network design, performance optimization, and problem-solving challenges
Practice communication and technical explanation articulation for network concepts

ATS Keywords: Network Systems, CISCO, Project Management, Firewall, Load Balancer, Performance Tuning, Troubleshooting, Network Design, Data Center, Mission Critical Systems, Team Leading, Self-Studying, Open Source Technology, Infrastructure Projects, New Technologies, Service Improvement

📝 Enhancement Note: Rakuten's interview process focuses on assessing technical skills, leadership potential, and cultural fit for network engineering roles.

🛠 Technology Stack & Web Infrastructure

Network Technologies:

CISCO network systems and products
Firewall and load balancer technologies (e.g., F5, Fortinet, Palo Alto)
Cloud networking and data center infrastructure (e.g., AWS, Google Cloud, Azure, OpenStack)

Project Management Tools:

Agile and Scrum methodologies (e.g., Jira, Confluence)
Collaboration and communication tools (e.g., Slack, Microsoft Teams)
Version control and code review tools (e.g., Git, GitHub, Bitbucket)

📝 Enhancement Note: Rakuten's network engineering roles require proficiency in CISCO network systems and products, as well as experience with firewall, load balancer, and cloud networking technologies.

👥 Team Culture & Values

Network Engineering Values:

Innovation: Embrace new technologies and continuous learning
Collaboration: Work closely with cross-functional teams to deliver reliable and secure network infrastructure
Customer Focus: Prioritize customer needs and user experience in network design and optimization
Quality & Reliability: Ensure high-quality, reliable, and secure network services

Collaboration Style:

Cross-functional Integration: Collaborate with software developers, designers, and product managers to deliver end-to-end network solutions
Code Review Culture: Participate in code reviews and knowledge sharing to maintain high-quality network infrastructure
Peer Programming: Collaborate with network engineers and other specialists to solve complex network challenges

📝 Enhancement Note: Rakuten's network engineering team values innovation, collaboration, and customer focus, fostering a culture of continuous learning and improvement.

⚡ Challenges & Growth Opportunities

Technical Challenges:

Network Design & Optimization: Design and optimize networks for new and existing services, balancing performance, security, and scalability
Emerging Technologies: Stay up-to-date with new network technologies and apply them to production environments
Mission-Critical Systems: Ensure reliable and secure network infrastructure for mission-critical financial service systems

Learning & Development Opportunities:

Network Specialization: Deepen your knowledge in specific network technologies or domains, such as cloud networking, security, or data center infrastructure
Leadership Development: Develop your leadership skills through team management and architecture decision-making
Conference Attendance & Certification: Attend industry conferences, obtain relevant certifications, and engage with network engineering communities

📝 Enhancement Note: Rakuten's network engineering roles offer significant technical challenges and growth opportunities for network engineers looking to advance their careers in network design, optimization, and emerging technologies.

💡 Interview Preparation

Technical Questions:

Network Fundamentals: Demonstrate your understanding of network protocols, topologies, and architecture
CISCO & Network Technologies: Showcase your expertise in CISCO network systems and other relevant network technologies
Project Management: Explain your approach to project management, stakeholder communication, and risk mitigation

Company & Culture Questions:

Rakuten's Network Infrastructure: Describe your understanding of Rakuten's network infrastructure and how you would contribute to its improvement
Open-Source Technology: Discuss your experience with open-source technology and how you would apply it in a financial services context
Customer Focus: Explain how you prioritize customer needs and user experience in network design and optimization

Portfolio Presentation Strategy:

Network Design Case Studies: Present case studies showcasing your experience in network design, project management, and performance optimization
Technical Walkthrough: Provide a detailed technical walkthrough of your network design approach, highlighting your expertise in CISCO, firewall, load balancer, and other relevant technologies
User Experience Demonstration: Demonstrate your ability to look over the entire system from a bird's-eye view and contribute to strategic decision-making

📝 Enhancement Note: Rakuten's interview preparation focuses on assessing technical skills, leadership potential, and cultural fit for network engineering roles.

📌 Application Steps

To apply for this network engineering position at Rakuten Bank:

Submit your application through the Rakuten careers website
Customize your portfolio with live demos and responsive examples showcasing your network design, project management, and performance optimization skills
Optimize your resume for network engineering roles, highlighting your project highlights and technical skills
Prepare for technical interviews by practicing network design, performance optimization, and problem-solving challenges
Research Rakuten's network infrastructure, open-source technology, and customer focus to demonstrate your understanding of the company and role

⚠️ Important Notice: This enhanced job description includes AI-generated insights and network engineering industry-standard assumptions. All details should be verified directly with Rakuten before making application decisions.

Network Engineer - System Infrastructure Department, System Division, Rakuten Bank, Ltd.