Senior Software Engineer (Python)

About HENNGE

HENNGE is a B2B SaaS company based in Tokyo, Japan, and we are at the forefront of the changing workplace. HENNGE One, one of the top cloud security services in Japan, allows customers to adopt flexible work environments and safely harness the power of the cloud from any location. With cloud security ensured, employees are free to focus on working smarter, improving quality, and achieving business results.

Roles

We’re currently looking for a senior back-end engineer (Python) to join our fast-paced growing team.

As part of the engineering team, you will be responsible for building cloud-security solutions used by thousands of enterprise companies. Our flagship product, HENNGE One, provides functionalities ranging from access control, email filtering, online storage, and email archiving. We focus on implementing state-of-the-art security functionalities, ensuring SLA 99.9% in distributed fault-tolerant deployment, and providing the best user experience to our customers.

Responsibilities

• Design, develop, and maintain innovative features based on business needs
• Design scalable and fault-tolerant architecture in a distributed cloud deployment
• Ensure high-quality deliverables by maintaining CI/CD, writing solid tests, and concise documentation
• Improve team synergy and mentor junior engineers
• Communicate with Design, Product Management, and Customer Success teams
• Our tech stack: Python 3, asyncio, NoSQL, AWS, Docker

Requirements

• Minimum Qualifications
• 3 years of experience with Python backend development
• Strong background in building scalable web applications in Python
• Ability to mentor junior engineers and work collaboratively in a team environment
• Experience with cloud infrastructure, such as AWS, GCP, or Azure
• Ability to automate deployments via CI/CD pipelines
• Understand the importance of clean code and software documentation
• Business-level English (Japanese is NOT required)
• Interested in open source/tech community
• Nice to Have
• Experience building large-scale distributed systems
• Deep experience with AWS
• Experience with asyncio based web frameworks in Python
• Knowledge of security concepts and technologies
• Deep knowledge of Linux environment
• Degree in Computer Science or other related technical field
• Team leadership experience

Work Style

• Flexible working hours with core time
• Hybrid work environment with emphasis on in-office collaboration and the encouragement for employees to work onsite

Benefits

• Language learning support (English/Japanese)
• English allowance and Advanced language expert allowance
• Insurance: Health, Employment, Industrial Injury, Welfare pension
• Employee Stock Ownership Plan
• Opportunities to attend international and domestic conferences
• Financial support for technical certifications and technical learning programs
• Office clubs to join: coffee club, board game club, karaoke club, language cafe club, etc.
• Transportation allowance (maximum of 35,000 yen per month)

Reasons Why You Will Enjoy Working at HENNGE

HENNGE offers a diverse development team with people from over 20 countries who love both technology and Japanese culture. Located in the heart of metropolitan Tokyo, HENNGE offers a non-traditional Japanese experience working in Shibuya, one of the busiest and most exciting places in the world.

Work-life balance is highly valued at HENNGE, and lots of fun happens at our office! Weekly board game nights, seasonal in-house events, monthly technical