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Simplex Holdings, Inc. Tech Stack

Digital transformation partner for Japanese financial institutions and enterprises

IT Services and IT Consulting 港区, 東京都 1,001–5,000 employees Founded 1997 Public Company

Simplex Holdings is a Tokyo-listed holding company (founded 1997, TSE Prime Market since April 2022) with three operating divisions: Simplex Inc. (core financial tech), Deep Percept Inc. (AI), and Xspear Consulting (digital transformation advisory). The tech stack spans AWS, Azure, GCP, Kubernetes, and Docker — indicating mature multi-cloud infrastructure — while active hiring is heavily weighted toward senior engineers and mid-level engineers, suggesting a scaling phase in platform modernization and DevSecOps capabilities rather than new-market entry.

Tech Stack 77 technologies

Core StackAWS GitHub GitLab VMware Docker Python Linux Jetpack Compose SwiftUI Flutter React Native Vue React CircleCI Jenkins Kubernetes Terraform CloudFormation Datadog Jira Trello Windows Git vCenter Azure GCP iOS Android Bitrise AWS CDK+47 more

AdoptingGitHub GitHub Actions

What Simplex Holdings, Inc. Is Building

◆Challenges

Modernizing core applications
Expanding business
Accelerating cloud shift
Migrating legacy on-premise to cloud
Global system implementation
Incident response for internet transaction system
Implementing devsecops platform
Refreshing vmware infrastructure
Handling massive data volumes
Solving customer business challenges

▲Active Projects

Advanced technology consulting proposal
New security service for internet transaction system
Github enterprise cloud implementation
Global system implementation project
Next-generation development platform implementation
Core application modernization
Blockchain-based new business planning
Internal developer environment improvement
Recruitment strategy design
Maintenance project leadership

Hiring Activity

Accelerating80 roles · 70 in 30d

Department

Engineering

42

Consulting

8

Ops

5

Sales

5

Security

5

HR

4

Finance

3

Design

2

Seniority

Senior

33

Mid

30

Lead

7

Manager

4

Junior

3

Notable leadership hires: Tech Lead, Project Lead

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About Simplex Holdings, Inc.

Simplex Holdings serves Japan's leading financial institutions and has recently expanded into public sector and enterprise clients across non-financial industries. The core business historically delivered technology infrastructure and solutions for banking and payments; the group now packages that expertise into digital transformation consulting and AI-driven advisory through subsidiary firms. With 1,001–5,000 employees across the group, operations span Japan; active projects include core application modernization, cloud migration, security service expansion, and blockchain-based business exploration.

Headquarters港区, 東京都

Company Size1,001–5,000 employees

Founded1997

Hiring MarketsJapan

Frequently Asked Questions

What is Simplex Holdings' tech stack?

AWS, Azure, GCP, Kubernetes, Docker, Python, React, and Flutter across primary use. GitHub and GitHub Actions are actively adopted. VMware, Jenkins, CircleCI, and Terraform are also in use for infrastructure and CI/CD.