Technical Lead

Job Description

Appealing Points:

• Opportunity to lead the design, development, and delivery of complex enterprise-grade systems in a highly technical engineering environment
• Work with cutting-edge technologies including Python/FastAPI, React, microservices, Kubernetes, cloud platforms, and AI/LLM-based application architectures such as RAG
• Take ownership of technical decision-making, mentor engineering teams, and drive quality, DevOps, security, and observability initiatives across the full software lifecycle

Annual Salary: 10 Million yen and Above

Job Qualification:

• 6 to 10 years of software engineering experience
• At least 2 to 4 years of technical leadership experience leading software engineering teams or major system components
• Experience delivering enterprise-grade systems in complex engineering environments
• System Design & Application Architecture
  • Strong hands-on expertise in system design and application architecture
  • Strong understanding of microservices architecture, service boundaries, and API contracts
  • Experience in distributed systems design, asynchronous processing, and event-driven patterns
  • Strong understanding of design patterns, SOLID principles, and modular application design
  • Experience designing systems for scalability, fault tolerance, and maintainability
• Backend Engineering
  • Strong hands-on backend development experience using Python and/or JavaScript/TypeScript
  • Strong expertise in FastAPI or equivalent backend frameworks
  • Strong understanding of REST API principles, service orchestration, and integration patterns
  • Experience with asynchronous workflows and backend performance optimization
• Frontend Engineering
  • Working knowledge of frontend development using React and modern UI frameworks
  • Understanding of frontend integration patterns and real-time interaction mechanisms (e.g., SSE)
  • Ability to guide frontend engineers on implementation quality and architecture alignment
• AI Application Engineering
  • Working knowledge of LLM-based application development and applied AI integration patterns
  • Understanding of RAG architecture, retrieval optimization, and evaluation loops
  • Familiarity with guardrails, prompt workflows, and AI reliability mechanisms
  • Ability to support engineering teams implementing AI-enabled application workflows
• Data Engineering & Data Handling
  • Strong understanding of data modeling and data flow design
  • Experience with SQL and NoSQL databases
  • Understanding of data pipelines, transformations, and data quality practices
  • Experience handling structured and semi-structured application data
• Cloud & DevOps
  • Strong experience with Docker, Kubernetes, and containerized deployments
  • Strong understanding of CI/CD pipelines and release automation
  • Experience with Infrastructure-as-Code (Terraform)
  • Experience deploying applications in cloud environments (AWS, Azure, GCP)
  • Strong understanding of environment management and release strategies
• Testing & Quality Engineering
  • Strong understanding of Test Driven Development (TDD)
  • Experience implementing unit, integration, and end-to-end testing strategies
  • Strong debugging and troubleshooting capability
  • Experience driving engineering quality improvements across teams
• Soft Skills
  • Strong technical leadership and engineering decision-making capability
  • Strong mentoring and team enablement capability
  • Ability to communicate technical trade-offs clearly to both technical and business stakeholders
  • Strong problem-solving and root cause analysis mindset
  • High ownership and accountability for technical delivery outcomes
  • Strong collaboration across cross-functional teams
  • Ability to remain effective under delivery pressure and shifting priorities

Language Proficieny : Business level Japanese (JLPT N2), Business level English

Company Description:

The company has a singular focus on the Connectedness vertical, partnering with the leading creators of our hyper-connected world. Customers range from telecom operators, digital/multi-service providers (D/MSPs), and technology and digital platform companies in the business of connectedness. The company builds, integrates, and operates solutions enabling next-generation technologies and innovations. Services global leaders including Verizon, CenturyLink, Adtran, Vodafone, Liberty Global, Windstream, Virgin Media, Rogers, and Deutsche Telekom among many others. The company’s customers today help more than a billion people and five billion devices stay connected.