Tokyo

Lead Cloud Engineer

Tokyo
Partial Remote
Full-time
September 24, 2026

About the Team

The Cloud Engineering Team supports the infrastructure foundation, reliability, and scalability of all products provided by Mico. The team is responsible for the infrastructure across the entire product portfolio, including new products as well as existing and legacy systems.

In this role, you will be expected to formulate growth strategies for the team or critical projects and lead the organization from a technical perspective.

Cloud Engineering covers the following three complementary areas, aiming for a team that operates cross-functionally without silos:

Infrastructure: AWS-centered cloud architecture, network & compute, cost optimization, compliance with security requirements
DevOps: CI/CD pipelines, automation & tooling, release management, improving Developer Experience (DevEx)
SRE: SLI/SLO and error budget management, incident response, observability, post-mortems

Key Responsibilities

Formulating team and project growth strategies, and executing them by collaborating with internal and external stakeholders
Leading technical projects that deliver measurable outcomes
Leading cross-functional projects
Designing and improving systems to enhance stability and scalability
Managing reliability goals through the definition and operation of SLIs/SLOs and error budgets
Incident response
Systematizing and standardizing RCA (Root Cause Analysis), and establishing a blameless post-mortem culture
Designing and improving the observability foundation (metrics, logs, traces)
Enhancing development team productivity through CI/CD pipelines and release management improvements
Visualizing and optimizing cloud costs
Collaborating with the company-wide security team to ensure and implement security compliance
Collaborating with development and product teams
Sharing knowledge and best practices through documentation

Minimum Qualifications

Experience in designing, building, and operating systems using cloud services (AWS, etc.)
Experience building infrastructure using Infrastructure as Code (Terraform, AWS CDK, etc.)
Experience designing, building, and operating CI/CD and DevOps pipelines
Advanced debugging and troubleshooting skills
Deep understanding of system architecture
Experience making technical decisions and driving initiatives at the team or project level
Ability to build consensus and engage cross-functional stakeholders

Preferred Qualifications

Experience designing and operating SLIs/SLOs and error budgets
Experience establishing incident response frameworks and on-call operations
Experience designing, building, and operating observability platforms (New Relic, Sentry, CloudWatch, etc.)
Experience designing, building, and operating systems using container technologies such as Docker
Proven track record of cloud cost optimization
Automation experience using scripting languages
Experience designing and implementing security measures

Tech Stack

Cloud Infrastructure: AWS
IaC: Terraform, AWS SAM
Containers: Docker, Kubernetes
Monitoring & Observability: New Relic, Sentry, AWS CloudWatch, Grafana
CI/CD: GitHub Actions

Ideal Candidate

Ability to look beyond existing paradigms and formulate problem-solving strategies from a high-level perspective
High integrity, accountability, and strong sense of ownership
Ability to structure thoughts, articulate ideas clearly, and produce tangible output
Ability to work autonomously in an asynchronous, document-first communication culture
Open and transparent communication style
Strong leadership skills to drive projects forward while rallying others around them

APPLY NOW ➜🇯🇵 Residents Only

About Mico

Mico's goal is to help companies build their brand through the power of conversation.

They are developing multiple products to analyze and improve communication between businesses and consumers, enabling businesses to optimize their online marketing efforts.

The conversational commerce (C-commerce) is a rapidly growing market, projected to surpass the e-commerce market in some countries by 2025.

Mico (formerly Micoworks) has already achieved 500% business growth in just two years, placing them at No.1 in LINE marketing within Japan. They’ve also secured a total of 6.3 billion yen in funding (with the recent Series B raising 3.5 billion yen).

Mico has set an ambitious goal to become Asia’s No.1 Brand Empowerment Company by 2030, with a clear vision for global expansion. Achieving this goal will require tackling numerous obstacles, and they’re looking for team members who are up to the challenge.

Here are the services you’ll be working on:

Mico Engage AI
A platform that enables seamless communication through message automation and deep integration with client systems.
Mico Voice AI
A service that enhances communication quality and efficiency using AI voice recognition, helping create meaningful connections.
BizClo
An enterprise messaging solution leveraging LINE, optimized for business use to improve customer relationships and internal efficiency.
Micomii
A LINE-based membership service for restaurants, enabling customer segmentation, rank-based perks, and digital coupons.

Why Work at Mico

Flexible work style: Hybrid work, flex time, and up to 6 Life-Health leave days per year to support diverse lifestyles.
Robust growth support: Subsidies up to ¥55,000/year for books and seminars, supporting personal skill and career development.
High transparency: Weekly TGIM meetings and quarterly company-wide updates to share vision and goals.
Leadership training: Strengthening team leadership and organizational management skills through training.
Fair evaluation system: OKRs-based performance reviews conducted semi-annually with continuous feedback.
Social impact: Contributing to clients’ business and workstyle transformation through innovative SaaS products.

Team Culture

Mico leadership and team embody an "OPEN MIND" approach, fostering open and inclusive communication across all levels.

Driven by a strong "ALL FOR ONE" spirit, team members work closely together, both internally and externally, with a "Giver Mindset" at the core of their collaboration.

Surrounded by highly motivated colleagues, you’ll find daily inspiration and opportunities for personal and professional growth.