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About the Role
We are seeking a Senior Software Engineer to lead backend and web-platform development for HENNGE One, our global cloud-security suite. You will join the Secure Transfer Team, focusing on developing our Data Loss Prevention (DLP) Edition, specifically the Secure Vault file exchange solution. This role requires architecting fault-tolerant, high-availability systems for sensitive enterprise data, bridging backend development with cloud infrastructure using Kubernetes and Terraform.
Responsibilities
- Design, build, and maintain new features for HENNGE One, using Python and other web technologies.
- Architect scalable, fault-tolerant services deployed in cloud environments.
- Automate deployment, testing, monitoring and documentation via CI/CD pipelines and infrastructure-as-code.
- Collaborate closely with Product Management, Design, and Customer Success teams to deliver high-quality user experiences.
- Participate actively in code reviews, discussions and technical decision-making.
- Mentor junior engineers, and contribute to improving team processes and engineering culture.
Requirements
- 3+ years of experience developing production-scale web applications using Python.
- Strong experience across the software development lifecycle (SDLC), from system design to deployment and maintenance.
- Hands-on experience with containerization and orchestration technologies (e.g., Kubernetes, ArgoCD).
- Experience with Infrastructure-as-Code tools, such as Terraform.
- Deep expertise in architecting and operating mission-critical AWS environments.
- Experience with CI/CD pipelines, automated testing, and clean-code practices.
- Ability to lead technical initiatives, mentor junior engineers, and work collaboratively in a team environment.
- Fluency in English (Japanese is not required), equivalent to CEFR B2 level or above (e.g., TOEIC 785+).
- Interest in open source or tech community activities.
- Degree in Computer Science or related technical field.
- Experience building large-scale distributed systems or SaaS products.
- Familiarity of Go, or a strong interest in learning it, to help build and maintain our multi-language backend infrastructure.
- Additional experience with cloud security best practices, including PII obfuscation and secure data-handling protocols.
- Team leadership experience.
Skills
- Python
- Kubernetes
- ArgoCD
- PostgreSQL
- AWS
- FastAPI
- Terraform
- CI/CD
- Automated testing
- Infrastructure-as-code
- Cloud security best practices
- PII obfuscation
- Secure data-handling protocols
- Go
Location
- Tokyo, Japan
Work Type
- Flexible working hours
- Permanent employee
Experience Level
- Senior
Education Level
- Degree in Computer Science or related technical field
Salary/Compensations
- 8.5 to 12.5 million JPY
Benefits
- English Allowance and Advanced Language Expert Allowance
- Physical Communication Bonus
- Transportation allowance
- 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
About the Company
- HENNGE is a Tokyo-based cloud-security leader helping organizations adopt flexible work environments and safely leverage the cloud.
- As a B2B SaaS company, we build secure and reliable cloud solutions that help enterprises manage access and identity efficiently.
- Our flagship product, HENNGE One, empowers thousands of enterprise customers with access control, email filtering, archiving, and next-gen cloud security features.
- We have a highly technical CEO, strong engineering culture, and a global mindset.
- We celebrate diversity, with a vibrant team from over 20 countries.
- We offer smooth Japan relocation support, including flight tickets, visa sponsorship, and Japanese lessons.
- Work-life balance is highly valued, with numerous social channels, events, and flexible working hours.
- Our CEO has an engineering background and is deeply engaged in product development, fostering a culture that values thoughtful design and technical quality.
- We operate with collaborative, autonomous teams where decisions shape our services and influence product development.
Equal Opportunity
- We Celebrate Diversity