COTeggVietnam
VIENJA
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COTegg Vietnam · Hanoi

Incubate ideas.Hatch products.

Making Needs Visible Through Technology

We are the Hanoi engineering team of COTegg Japan. Together, we turn needs no one has seen yet into real technology products, across AI, data, web and mobile.

Start the journeyTokyo → Hanoi · 3DDiscover COTegg Vietnam

Scroll to hatch

AI / LLM
Cloud
Web
Mobile
Data
QA
Agile

How we make products

Every great product starts as an egg.

01Incubate

See needs no one else sees

Every product starts with a “what if…”. We listen, observe and find the needs hiding below the surface.

02Hatch

Turn ideas into an MVP

Fast prototypes, early tests with real users. Good ideas get validated in weeks, not months.

03Grow

Build real products

AI, cloud, web and mobile. We build, run and keep improving products for our clients in Japan.

04Renew

Create new needs

A good product opens up needs that didn’t exist before. And a new egg starts to incubate.

  1. Incubate
  2. Hatch
  3. Grow
  4. Renew

About us

Japanese engineering. Vietnamese team.

COTegg Vietnam was founded in Hanoi in 2024 as part of COTegg Inc., a technology company based in Tokyo since 2014. Together with our team in Japan, we build software for clients in Japan, from requirements and design to development, testing and delivery.

2014
COTegg founded in Tokyo
2024
COTegg Vietnam opens in Hanoi
4
technology service areas
5
steps in our Japanese-quality process

What we do

A software studio for clients in Japan.

COTegg Vietnam is an outsourcing development team: we turn our clients’ ideas into working software, from requirements to delivery.

  1. 01

    AI & Data

    Generative AI and machine-learning systems, data analysis, and building and running AI models.

  2. 02

    Web & Mobile

    Designing, building and running cloud-native web and mobile apps with a strong focus on UI/UX.

  3. 03

    Full-cycle engineering

    Requirements, design, development and operations. Fast MVPs and prototypes, the Agile way.

  4. 04

    Tech consulting

    Technology choices, architecture, process improvement, CI/CD and building engineering teams.

A five-step, Japanese-quality process

Every project moves along the same line, like the conveyor in our studio.

  1. 01RequirementsClarify goals and scope together with the client.
  2. 02DesignSystem architecture and user experience.
  3. 03DevelopmentShort sprints, code review, transparent progress.
  4. 04TestingAutomated and manual testing before every release.
  5. 05DeliveryOn time, with documentation and operational support.

Culture

Three things we believe.

People at COTegg grow like an egg too: nurtured, supported, and then creating something new of their own.

  1. 01

    Enjoy

    Everyone has ideas. Making them real takes a lot of trial and persistence, and we enjoy the whole journey.

  2. 02

    Professionalism

    We don’t just meet needs, we aim to create them. That takes ownership of every line of code.

  3. 03

    Speed

    In tech, speed is the biggest advantage. We take the lead instead of waiting for others.

Benefits

  • Hybrid: 2 remote days a week
  • MacBook Pro and monitors for office and home
  • 100% salary during probation
  • Annual and performance bonus, regular salary reviews
  • Business trips to Japan
  • Support for AI tools and certifications
  • Social insurance on your full salary
  • Company trips, team building, sports
  • Flat structure, fast decisions

Join us

The next egg could be yours.

We don’t hire often, but we’re always looking for the right people. Here is our recent hiring activity.

See all hiring activity →
ClosedCommunication · QACommunicator & TesterSupport communication with Japanese clients, help test web and mobile apps, and keep daily operations running smoothly.Full-timeHanoi · HybridClosed on 31/08/2026ClosedFull-stackSenior Fullstack Engineer (PHP or Rails)Own backend, front-end and mobile development for web systems built for clients in Japan, using PHP or Ruby on Rails.Full-timeHanoi · HybridClosed on 31/08/2026ClosedFull-stackSenior Fullstack Engineer (Flutter + Rails)Build Flutter mobile apps and Ruby on Rails backends for clients in Japan, with ownership across both.Full-timeHanoi · HybridClosed on 31/07/2026

Don’t see the right role?

Send us your CV and a few lines about yourself. We’ll get in touch when something fits.

Send an email

Got an idea ready to hatch?

Whether you’re a business looking for a partner or an engineer looking for a team, we’re always happy to talk.

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