Technical Lead

Posted 2 Days Ago
Be an Early Applicant
Tokyo, JPN
In-Office
Senior level
Information Technology • Professional Services • Software • Consulting
The Role
Owns technical execution and engineering delivery for complex software and AI-enabled solutions. Leads system design, architecture, coding standards, testing, CI/CD, observability, incident resolution, and production readiness. Mentors software engineers, guides implementation, manages technical risks, and collaborates with Forward Deployed Engineers and Technical Program Managers on customer implementations, dependencies, estimates, and delivery sequencing. Requires strong backend, cloud, distributed systems, data, security, and applied AI expertise.
Summary Generated by Built In

Overview:

The Technical Lead is responsible for owning the technical execution and engineering delivery of complex application and AI-enabled solutions across the software development lifecycle. This role serves as the primary technical authority for the engineering team, translating architecture and business requirements into executable technical plans, ensuring delivery quality, and guiding engineers through implementation.

 

The Technical Lead manages the day-to-day technical delivery of engineering teams comprising junior, mid-level, and senior software engineers, working closely with Forward Deployed Engineers (FDEs) on customer-driven solution implementation and Technical Program Managers (TPMs) on delivery planning, milestone tracking, and dependency management.

 

The role requires strong expertise in system design, cloud-native development, AI application integration, engineering quality practices, and technical mentoring, with accountability for technical stability, delivery predictability, and implementation excellence.

Roles & Responsibilities:

 

·       Own the technical execution of software delivery across engineering workstreams, ensuring alignment with business requirements and solution architecture

  • Break down high-level architecture into implementable technical components, APIs, services, and engineering tasks
  • Lead system design discussions across application, data, and integration layers
  • Define and enforce engineering standards across development, testing, deployment, and documentation
  • Guide and support SDE1, SDE2, and SDE3 engineers in implementation, debugging, and technical problem-solving
  • Conduct code reviews and ensure adherence to coding standards, maintainability, and architectural integrity
  • Collaborate with FDEs on AI application integration patterns including LLM workflows, RAG pipelines, and agent orchestration
  • Work with TPMs to support effort estimation, technical dependency planning, and delivery sequencing
  • Identify technical risks early and define mitigation strategies across system design, integrations, and delivery execution
  • Ensure implementation of testing strategies including unit testing, integration testing, contract testing, and performance validation
  • Oversee CI/CD implementation and deployment readiness across development environments
  • Ensure observability, monitoring, and operational readiness are embedded into engineering solutions
  • Support incident troubleshooting and root cause analysis for production issues
  • Mentor engineers and support technical capability growth across the team
  • Improve team productivity by promoting engineering accelerators, automation, and effective use of AI-assisted development tools

Requirements:


Experience

  • 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

Security & Observability

  • Understanding of IAM, OAuth2, API security, and access control patterns
  • Understanding of secure application design principles
  • Experience implementing observability using Prometheus, Grafana, and OpenTelemetry
  • Strong understanding of logging, monitoring, and production diagnostics

Delivery Collaboration

  • Ability to collaborate effectively with TPMs on delivery planning and dependency management
  • Ability to collaborate with FDEs on customer-driven technical implementations
  • Strong understanding of Agile/Scrum engineering workflows
  • Experience working in structured sprint-based engineering environments

 



Requirements


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

Nice to Have

  • Experience supporting AI-first or GenAI application delivery
  • Experience with vector databases and semantic retrieval systems
  • Experience in enterprise-scale cloud modernization or digital transformation programs
  • Experience in telecommunications or other regulated industries
  • Experience working in multicultural or distributed teams
  • Japanese language proficiency preferred for client-facing or Japan-based roles

 

Language Requirements

  • English: Proficiency required
  • Japanese:  N1 & N2




Skills Required

  • 6 to 10 years of software engineering experience
  • 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
  • Strong hands-on expertise in system design and application architecture
  • Strong understanding of microservices architecture, service boundaries, and API contracts
  • Experience with distributed systems design, asynchronous processing, and event-driven patterns
  • Strong understanding of design patterns, SOLID principles, and modular application design
  • Experience designing scalable, fault-tolerant, and maintainable systems
  • Strong backend development experience using Python and/or JavaScript/TypeScript
  • Strong expertise in FastAPI or equivalent backend frameworks
  • Strong understanding of REST APIs, service orchestration, and integration patterns
  • Experience with asynchronous workflows and backend performance optimization
  • Working knowledge of frontend development using React and modern UI frameworks
  • Understanding of frontend integration patterns and real-time interaction mechanisms such as SSE
  • Working knowledge of LLM 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
  • 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
  • Strong experience with Docker, Kubernetes, and containerized deployments
  • Strong understanding of CI/CD pipelines and release automation
  • Experience with Infrastructure as Code using Terraform
  • Experience deploying applications in AWS, Azure, or GCP cloud environments
  • Strong understanding of environment management and release strategies
  • Strong understanding of Test Driven Development and unit, integration, and end-to-end testing strategies
  • Strong debugging and troubleshooting capability
  • Understanding of IAM, OAuth2, API security, access control, and secure application design
  • Experience implementing observability using Prometheus, Grafana, and OpenTelemetry
  • Strong understanding of logging, monitoring, and production diagnostics
  • Ability to collaborate with TPMs and FDEs on delivery planning, dependencies, and customer-driven implementations
  • Strong understanding of Agile/Scrum and sprint-based engineering workflows
  • Strong technical leadership, engineering decision-making, mentoring, communication, problem-solving, and cross-functional collaboration skills
  • English proficiency
  • Experience supporting AI-first or GenAI application delivery
  • Experience with vector databases and semantic retrieval systems
  • Experience with enterprise-scale cloud modernization or digital transformation programs
  • Experience in telecommunications or other regulated industries
  • Experience working in multicultural or distributed teams
  • Japanese language proficiency at N1 or N2 level
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The Company
17 Employees
Year Founded: 2015

What We Do

NexusCorp LLC (operating as Nexus Corporation) helps businesses achieve their goals through custom software development, IT consulting, statement-of-work delivery, contingent workforce and direct-hire solutions, and payroll services. It designs, builds, tests, and maintains scalable digital applications; analyzes systems to improve technology use; and supplies specialized professionals and structured project delivery. Its client-first approach emphasizes compliance, integrity, innovation, and tailored business outcomes.

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