Roles

We're looking for a software engineer to take ownership of backend and web-platform development. You'll join the File DLP Team, building and maintaining the File DLP product within the HENNGE One suite.

As one of the newer products in our lineup, File DLP is still evolving — you'll work closely with us to explore new ideas, shape features from discovery to delivery, and bring impactful solutions to our customers. As the product continues to grow rapidly, you'll also tackle scalability challenges and be expected to develop creative, forward-looking solutions to ensure reliability and performance at scale.

While your main focus will be backend development, the team values full-stack and cross-functional collaboration — giving you opportunities to explore the frontend and work closely with stakeholders to deepen your understanding of the business and how our product creates value for customers.

Tech Stack:
Golang, React, Graphql, PostgreSQL, Terraform, Temporal, AWS

What you'll do

• Design, build, and maintain new features for HENNGE One, using Go and other web technologies.
• Automate deployment, testing, monitoring and documentation via CI/CD pipelines and infrastructure-as-code.
• Participate actively in product discovery processes that involve Product Management, Design, and Customer Success teams to deliver high-quality user experiences.
• Participate actively in code reviews, discussions and technical decision-making.
• Assess risks in system architecture designs.
• Work collaboratively with other engineers in a team environment, and contribute to improving team process & engineering culture.

What we're looking for

Minimum Qualifications

• 2+ years of experience developing production-scale web applications using Go.
• Experience in developing full-stack applications.
• Experience in working collaboratively with other engineers in a team environment.
• Hands-on experience with cloud infrastructure (AWS, GCP or Azure) and distributed system concepts.
• Experience with CI/CD, automated testing, code documentation, and clean-code practices.
• Fluency in English (Japanese is not required), equivalent to CEFR B2 level or above (e.g., TOEIC 785+).
• Interested in open source/tech community activities.

While not required, we'd love to hear if you have:

• Degree in Computer Science or other related technical fields.
• Experience building large-scale distributed systems or SaaS products.
• Knowledge of web-security, access-control, email-or-storage-systems domains.
• Knowledge of DevOps tools and practices (CI/CD, Infrastructure as Code).
• Knowledge of Linux / MacOS / Unix-like environments.

Work Style & Employment Details

Work Style

Flexible working hours with a designated core time (11:00–16:00), allowing you to organize your day effectively. Employees typically work 8 hours per day with a 1-hour break.

Employment Type

Permanent employee

Place of Work

Tokyo, Japan — Shibuya Headquarters.

Hybrid work environment with emphasis on in-office collaboration and encouragement for employees to work onsite

Compensation

Annual salary:
7 to 9 million JPY
(includes English Allowance and Physical Communication Bonus)

Please refer to our Company Introduction Deck for an explanation of our Assessment System and the Belt System, which we use to determine the candidate's salary range:

Benefits

• English Allowance and Advanced Language Expert Allowance:
  JPY 10,000 ~ JPY 130,000 per month, paid alongside base salary, if the employee fulfills the requirements.
• Physical Communication Bonus:
  JPY 4,000 per day for coming to the office and interacting with other employees, paid out as bonus according to the number of days. Details will be provided at the offer meeting.
• Transportation allowance (maximum of JPY 35,000 per month).
• Employee Stock Ownership Plan.
• Insurance:
  Health, Employment, Industrial Injury, Welfare pension.
• Opportunities to attend international and domestic conferences.
• Financial support for technical certifications and technical learning programs.

Reasons why you will enjoy working at HENNGE:

We Celebrate Diversity

Join a vibrant team from over 20 countries, united by a love for technology and Japanese culture. Located in Shibuya, Tokyo, we offer a dynamic, non-traditional work environment in one of the world's most exciting cities.

Smooth Japan Relocation

We make your move to Japan smooth and stress-free. We provide comprehensive support such as flight tickets, visa sponsorship, and Japanese lessons, to ensure a smooth onboarding process for our new hires, ensuring a seamless transition and a warm welcome for all candidates.

Balanced Work Life

Work-life balance is highly valued at HENNGE, and lots of fun happens at our office 200+ of social channels in our Slack, from weekly board game nights to snowboarding club, internal and seasonal events, monthly tech sessions with beer bashes, attendance of international tech conferences, and more. Employees have access to a flexible working hours system (with core working hours) to accommodate their preferred working style.

Passion for Technology

Our CEO has an engineering background and remains deeply engaged in product development. This hands-on understanding of technology helps shape a culture where thoughtful design, technical quality, and continuous improvement are genuinely valued. For engineers, this means working in an environment led by someone who understands the challenges of building products and actively supports teams in doing their best work.

Collaborative Teams

Work in autonomous teams where your decisions shape our services. Influence every aspect of our products, from UX and architecture to development and deployment, in an agile and collaborative setting.

Be part of a diverse and innovative team at HENNGE, where your passion for technology and desire to make a difference are valued and celebrated. Ready to change and challenge the status quo with us?

To learn more about life at HENNGE, please check these two links:

• Life at HENNGE
• Stories from our employees

Hiring Process

1. Solve our coding challenge after registering from the apply link. You will receive an email with our guidance upon your submission, and there is no time limit to finish the challenge.

2. *Please note that your application will be automatically rejected if:

3. you have
   fewer than two years
   of Golang experience, and/or

4. you complete the coding challenge using a programming language
   other
   than Golang.

5. Once you finish the coding challenge, follow the instructions to upload your CV and Cover Letter. Please check our guide on how to prepare them here.

6. Casual interview with our HR.
7. 2 (or 3) interviews with our engineers (no live coding).
8. Interview with our CEO.

We value your time and want you to perform at your best, so the coding challenge will be the only technical assessment in the process. There will be no live coding sessions.

Have more questions? Please consult our FAQ here.