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Job Application for Senior Software Engineer (Go/Backend) - HENNGE Email DLP at HENNGE Careers

Salary: 850 - 1250 百万円

GoAWS
English: Fluent

Minimum year of experience: 3

HENNGE

Senior Software Engineer (Go/Backend) - Email DLP

Location: Tokyo, Japan

Role Summary

Seeking a Senior Software Engineer to take ownership of backend and web-platform development for a flagship cloud-security suite serving millions of users globally. Join the Email Data Loss Prevention (DLP) Team to build the core data protection engine for a mission-critical security ecosystem.

Ideal for engineers passionate about:

  • Event-driven architectures
  • High-throughput data processing
  • Fault-tolerant backend systems

Engineers are encouraged to collaborate and rotate between teams and products as career growth and company needs align.

Tech Stack

  • Go
  • AWS (SQS/SNS, DynamoDB, PostgreSQL, OpenSearch)
  • Terraform

Responsibilities

  • Design, build, and maintain new features using Go and other web technologies.
  • Architect scalable, fault-tolerant services in cloud environments.
  • Automate deployment, testing, monitoring, and documentation via CI/CD and infrastructure-as-code.
  • Collaborate with Product Management, Design, and Customer Success teams to deliver high-quality user experiences.
  • Actively participate in code reviews and technical decision-making.
  • Mentor junior engineers and contribute to engineering culture.

Requirements

Minimum Qualifications

  • 3+ years of experience developing production-scale backend services with Go.
  • Ability to lead technical initiatives, mentor junior engineers, and work collaboratively.
  • Experience with cloud infrastructure (AWS) and distributed system concepts.
  • Familiarity with CI/CD, automated testing, code documentation, and clean-code practices.
  • Fluency in English (CEFR B2 or higher, e.g., TOEIC 785+). Japanese is not required.
  • Interest in open-source contributions or tech community participation.

Preferred/Bonus Qualifications

  • Degree in Computer Science or related field.
  • Experience building large-scale distributed systems or B2B SaaS products.
  • Familiarity with email security, secure file transmission, or cloud security products.
  • Knowledge of DevOps tools (Terraform, IaC), Linux/MacOS/Unix-like environments.
  • AWS certification (Solutions Architect, Developer, etc.).
  • Team leadership experience.

Work Style & Employment Details

  • Work Style: Flexible hours with designated core time (11:00–16:00), typically 8 hours per day.
  • Employment Type: Permanent employee
  • Work Location: Tokyo, Japan — Shibuya Headquarters

Compensation

Benefits

  • Language Allowance: JPY 10,000 ~ 130,000 per month for English or advanced languages if requirements are met.
  • Physical Communication Bonus: JPY 4,000 per office day, paid as bonus according to days onsite.
  • Transportation Allowance: Up to JPY 35,000/month.
  • Stock Ownership Plan
  • Insurance: Health, Employment, Industrial Injury, Welfare Pension
  • Conference Attendance: International and domestic opportunities
  • Certification Support: Financial support for technical certifications and learning programs

Why You'll Enjoy Working Here

  • 🌎 Diverse Team: 20+ nationalities, dynamic work environment in Shibuya, Tokyo
  • 📍 Smooth Relocation: Flight, visa sponsorship, and Japanese lessons for newcomers
  • 🎉 Work-Life Balance: Flexible hours, social & tech events, rich community networks
  • ❤ Tech-Driven Culture: Leadership with engineering roots, value on technical quality and improvement
  • 🙌 Autonomous Teams: Influence product development at all levels, agile environment

Learn more:

Hiring Process

  1. Coding Challenge

    • Go language only (applications using other languages will be rejected)
    • Minimum 3 years of professional Go experience required

  2. Upload CV & Cover Letter

  3. Interviews

    • Casual interview with HR
    • 2 (or 3) interviews with engineers (no live coding)
    • CEO interview

Note: The coding challenge is the only technical assessment (no live coding).

FAQ & Further Information

Refer to the provided links for additional company information and employee experiences.

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