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SUNITED株式会社 Tech Stack

Enterprise systems consulting and infrastructure modernization for Japanese mid-market

IT Services and IT Consulting 千代田区, 東京都 51–200 employees Founded 2019 Privately Held

SUNITED is a Tokyo-based consulting firm focused on operational transformation — business system development, legacy modernization, network infrastructure, and organizational scaling. The hiring velocity is accelerating with 15 engineering-focused roles (mostly mid and senior level), concentrated on network team buildout and legacy system replacement, indicating aggressive investment in infrastructure services delivery.

Tech Stack 17 technologies

Core StackAWS Linux Cisco NGINX MySQL SQL Server PHP C# Java Windows Server Windows Fortinet FortiGate Aruba CentOS Apache IIS

AdoptingGoogle Workspace

What SUNITED株式会社 Is Building

◆Challenges

Incident management
New technology adoption
Operation efficiency improvement
Legacy system replacement
Vendor control

▲Active Projects

Build new network construction team
Legacy system replacement
Subsystem development and maintenance
Group company projects
Prime projects
Implement new technology and product introduction

Hiring Activity

Accelerating15 roles · 7 in 30d

Department

Engineering

15

Seniority

Mid

8

Senior

7

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About SUNITED株式会社

SUNITED advises Japanese mid-market enterprises on business challenges spanning systems development and operations, legacy system replacement, network infrastructure, recruitment support, IPO readiness, security certifications (ISMS), and branding. Founded in 2019, the firm operates across 51–200 employees based in central Tokyo. Beyond consulting, a creative division handles design and production (logos, materials, packaging). The service model combines advisory work with hands-on implementation.

Headquarters千代田区, 東京都

Company Size51–200 employees

Founded2019

Hiring MarketsJapan

Frequently Asked Questions

What technology stack does SUNITED use?

Primary infrastructure: AWS, Linux, Windows Server, Cisco, Aruba, Fortinet FortiGate, NGINX, Apache, IIS. Backend languages: Java, C#, PHP. Databases: MySQL, SQL Server. Recently adopting Google Workspace.

What is SUNITED working on?

Core projects include legacy system replacement, new network team buildout, subsystem development and maintenance, technology/product adoption initiatives, and group company engagements.