We are looking for a Network Engineer to support the IT infrastructure of a major convenience store chain. The position covers network design and construction, operation, maintenance, troubleshooting, and improvement proposals, including leading the construction of new network environments and resolving technical issues.
Job Responsibilities:
Design and construct various network equipment such as routers, switches, firewalls, and load balancers.
Conduct technical reviews, organize requirements, and respond to design and construction for new communication requirements.
Maintain and manage the network environment, including configuration changes, troubleshooting, root cause investigation, and performance analysis.
Perform version upgrades and lifecycle management of network equipment.
Conduct preliminary investigations, make improvement proposals, and provide technical support based on customer requirements.
Coordinate technically with vendors and customers.
Create various documents, such as design specifications, operation procedures, and construction materials.
Requirements
Basic knowledge of enterprise networks.
Experience in designing and building L2 switches, L3 switches, and routers.
Experience in designing and building firewalls.
Experience in creating technical documents such as design specifications and construction procedure manuals.
Japanese: Fluent, with the ability to communicate complex business issues accurately and smoothly both orally and in writing.
English: Conversational and basic reading and writing level, with the ability to hold everyday conversations, read and write simple texts, and understand and respond to basic business communications.
Preferred Qualifications:
Experience in operating L2SW, L3SW, routers, firewalls, and load balancers.
Experience in handling version upgrades of network equipment or security equipment.
Experience in building or operating load balancers such as F5 BIG-IP and Citrix ADC.
Experience in building or operating VPN, Proxy, and Reverse Proxy environments.
Experience in packet analysis and troubleshooting.
Experience in creating technical proposals and improvement proposals.
Skills Required
- Basic knowledge of enterprise networks
- Experience designing and building L2 switches, L3 switches, and routers
- Experience designing and building firewalls
- Experience creating technical documents, including design specifications and construction procedure manuals
- Fluent Japanese, including accurate and smooth oral and written communication of complex business issues
- Conversational English with basic reading and writing ability
- Experience operating L2 switches, L3 switches, routers, firewalls, and load balancers
- Experience handling network or security equipment version upgrades
- Experience building or operating F5 BIG-IP or Citrix ADC load balancers
- Experience building or operating VPN, proxy, and reverse proxy environments
- Experience in packet analysis and troubleshooting
- Experience creating technical and improvement proposals
What We Do
NexusCorp LLC (operating as Nexus Corporation) helps businesses achieve their goals through custom software development, IT consulting, statement-of-work delivery, contingent workforce and direct-hire solutions, and payroll services. It designs, builds, tests, and maintains scalable digital applications; analyzes systems to improve technology use; and supplies specialized professionals and structured project delivery. Its client-first approach emphasizes compliance, integrity, innovation, and tailored business outcomes.
