Software Engineer

Job ID: 06519

Position: Full-Stack Engineer

Location: Tokyo (Full remote work)

Starting Salary Range: 7.000.000 ~ 12.000.000 JPY

Japanese level required: Business / Fluent

We are supporting a leading AI × Voice × Cloud technology startup that transforms sales enablement through innovative SaaS solutions. The company’s AI-powered voice analysis tools help visualize and improve communication challenges in sales and customer success, with a growing presence in Japan, the U.S., and Indonesia.

What You’ll Do:

• Lead full-stack development projects, including rapid prototyping for Proof of Concept (PoC) initiatives.
• Drive technical decisions, provide mentorship, and contribute to the growth of internal systems.
• Work across multiple projects, addressing high-impact technical challenges organization-wide.

Technical Environment:

• Languages: Python, JavaScript
• Frameworks: Django, FastAPI, Flask, Express
• Databases: PostgreSQL, DynamoDB
• Infrastructure: AWS (Fargate, Lambda, Aurora, etc.)
• Tools: GitHub, Slack, Notion, Docker

Requirements:

• Experience designing, developing, maintaining, and operating frontend and backend systems for high-availability services.
• Experience building systems on public cloud platforms using Infrastructure as Code (IaC) tools like Terraform.
• Experience designing and building microservice architectures focused on performance, availability, and maintainability.
• Proven track record in technical leadership or contributing to the technical growth of an organization or multiple teams.

Preferred:

• Performance tuning and troubleshooting experience.
• Experience making technical decisions for entire services, balancing requirements, cost, and productivity.
• Contribution to in-house products, open-source software, or technical publications.

Why Join:

• Fully remote work with a flexible schedule.
• Opportunity to work with cutting-edge AI voice technologies.
• Contribute to the technical direction of a company recognized as No.1 in the domestic cloud-based conversational AI market and Deloitte’s 2022 Technology Fast 50 Japan.

Employment Type: Regular Employment

Holidays: Weekends, national holidays, summer, and year-end/New Year holidays

Benefits: Health, welfare, pension, unemployment, and worker’s accident compensation insurance

We still have more positions available across different roles. If this isn’t the perfect fit, explore our other openings and feel free to apply!