Top-Selling Points

Rate of Foreigners

Less Than

Frequency of English Usage

Less Than

Short overtime work (less than 20 hours) Japanese learning support Management In-house product development

Top-Selling Points

Rate of Foreigners
Less Than

Frequency of English Usage
Less Than

Short overtime work (less than 20 hours) Japanese learning support Management In-house product development

Related Skills

Management/System project Experience

Tech lead

Programming Language

JavaScript TypeScript Python Go

Design / Graphic / Creative tools

HTML CSS

Library/Framework

React Next.js Vue.js Nuxt.js Django

Cloud / Infrastructure / DevOps tools

AWS

Language Requirements

Required

Preferred

Language Requirements

Required

Japanese: Business

English: Greetings/None

JLPT: None

Preferred

No Data

Job Description

[Business Overview] 
The company develops and operates the "Hayaimon Series," a suite of 13 Real Estate Brokerage DX SaaS products. These solutions automate manual onsite tasks such as property data entry and vacancy confirmation. With implementation in over 3,500 stores nationwide, the company holds a top-tier market share and drives digital transformation across the industry.

[Recruitment Background]
As the product portfolio expands, enhancing service stability and standardizing the technical foundation has become an urgent priority. In this position, you will lead the design, construction, and operation of cloud infrastructure, driving business growth from a technical standpoint. During this transformative period, we are looking for someone who can take significant discretion as a playing leader to push the growth of both the organization and the products.

[Job Overview]
Lead the SRE team as a technical head. While remaining hands-on with design, construction, and operations, you will also provide technical support and manage the workflow of team members.

[Key Responsibilities]
・Lead the design, construction, and operation of cloud infrastructure (primarily AWS).
・Spearhead incident response, operational quality improvements, and performance tuning.
・Handle the design, development, and maintenance of in-house systems and web services.
・Promote technical and organizational improvement initiatives.
・Drive team building to enhance overall performance.
・Manage task follow-ups and provide technical mentoring for team members.

[Organizational Structure]
・Engineering Manager: 1
・Frontend Engineers: 20 (including 2 also handling server-side)
・Server-side Engineers: 2
・Infrastructure Engineers: 2

[Development Environment]
・Languages: JavaScript, TypeScript, HTML, CSS, Python, Go
・Frameworks/Libraries: React, Next.js, Vue.js, Nuxt.js, Django, FastAPI
・Testing: Jest, pytest
・Infrastructure: AWS (EC2, ECS, AWS Batch, RDS, Aurora Serverless V2, Glue, Athena, API Gateway, Terraform)
・Tools: Notion, QuickSight, Git, Slack, Google Meet, GitHub, GitHub Copilot, Claude Code, CodeRabbit, Figma

[Learning Environment] 
The company hosts internal study sessions twice a week and fully covers expenses for attending conferences outside the prefecture, ensuring employees stay updated on the latest technologies.

[Position Highlights]
・Exercise technical ownership in selecting, designing, and building scalable, highly reliable infrastructure that supports business growth.
・Work in a modern environment utilizing cloud-native managed services and IaC (Terraform) for automated infrastructure and review processes.
・Expand your technical scope beyond server management into areas like data analysis infrastructure design.
・Gain a holistic view of systems by bridging infrastructure knowledge with application development, allowing for optimized solutions across the entire stack.
・Build leadership experience by managing a small, elite team (approx. 1–2 members), including goal setting, 1-on-1s, and technical guidance.

[Organizational Culture]
・Welcoming New Challenges: Strong executive support for modern technologies like AWS Aurora Serverless V2 and ECS Fargate enables rapid and optimal technical selection.
・Pursuit of True SRE: We encourage building essential mechanisms reflecting your own SRE philosophy, such as toil reduction and SLO/SLI definition, rather than just routine operations.
・Respect for Autonomy: As the team is in its early stages, you have the opportunity to build and lead the ideal development and operational cycles from scratch with high speed.

Required Skills and Experiences

[Mandatory Requirements] ・Proven experience in designing and building infrastructure architecture. ・Background in service design, construction, operation, and maintenance on AWS (GCP/Azure or other public clouds are also acceptable). ・Hands-on experience with Infrastructure as Code (IaC) using tools like Terraform. ・Experience leading a team, regardless of the size or scale. ・Strong orientation toward driving a team while remaining actively involved in hands-on technical work. [Preferred Requirements] ・Experience in the design, construction, operation, and maintenance of SaaS products. ・Professional software development experience in a team environment. ・Proactive mindset regarding technology selection and continuous system improvement. ・Strong alignment with our VISION, MISSION, and "9 Styles." ・Passion for learning new technologies and embracing new challenges. ・Experience in the 0-to-1 product development phase. [Desired Candidate Profile] ・Resonates with our corporate vision and professional style. ・Maintains smooth and effective communication with internal team members.

After sign up, you can browse all information.

If you already have a GitTap Account, please login.

Working Condition

[Expected Annual Salary]
6,000,000 JPY - 10,000,000 JPY

[Monthly Salary]
500,000 JPY - 833,000 JPY (Base salary: 380,952 JPY+ / Fixed overtime allowance: 119,048 JPY+ for 40 hours per month. Excess overtime paid separately.)

[Work Location]
Kayabacho Tower 12F, 1-21-2 Shinkawa, Chuo-ku, Tokyo
‐7-minute walk from Kayabacho Station (Tokyo Metro Hibiya Line)
‐8-minute walk from Hatchobori Station (JR Keiyo Line)
‐9-minute walk from Suitengumae Station (Tokyo Metro Hanzomon Line)

[Working Hours]
・Flextime System
‐Core time: 11:00 AM – 3:00 PM
‐Flexible time: Start 7:00 AM – 11:00 AM / End 3:00 PM – 10:00 PM
‐Standard working hours: 8 hours per day (approx. 160 hours per month)
*Average monthly overtime: 14 hours (previous year's result)
・Remote work: 2 days per week for engineers / 1 day per week for business staff

[Holidays and Leave]
・125 annual holidays: Full weekends off (Sat/Sun), public holidays, New Year, and summer leave.
・Paid leave: 5 days granted upon joining, additional 5 days after 6 months.
・Paid leave utilization rate: 81% (previous year's result)
・Others: Based on company calendar.

[Benefits and Welfare]
・Full social insurance coverage
・Commuting allowance
・High-spec office chairs and choice of MacBook Pro or Windows laptop
・Office lounge/kitchen, free drinks, free rice, and subsidized bento lunches
・Monthly recreation events, weekly shuffle lunches, and company trips
・Book purchase allowance (approx. 20,000 JPY/year), support for study groups/conferences, and certification support
・Influenza vaccinations

RECRUITMENT PROCESS

・Casual Interview (Online) ↓
・Document Screening & Online Aptitude Test ↓
・Interview (Online) ↓
・Final Interview (In-person)
*Please note that the selection process is subject to change depending on the position.

Business (description what they do)

・Planning and development of systems and applications (SaaS) for the real estate industry ・Development and operation of the "Hayaimon Series," a real estate brokerage business support system

Available Jobs in (iimon Inc.)

Recommended Jobs

cellpromote,inc.

[ Engineer ] IT consulting & PM/PMO projects for engineers! / 3+ Years Dev Experience Preferred

5M - ***M JPY | Tokyo

Java PHP Python

iDEA Consulting Inc.

BI Application Engineer【Full-Flextime & Full-Remote Work/Enriched Training/Prime Vendor】

4M - ***M JPY | Tokyo

System design (detail) System Design (Fundamental) Python

G Talent

Product Manager_Bilingual [JPN-ENG] (PdM)

7M - ***M JPY | Tokyo

Docker Java JavaScript

freee K.K.

【急成長SaaSを支える】社会貢献性の高い自社プロダクトの品質保証を担うQAエンジニア

5.5M - ***M JPY | Tokyo(+1)

Java Ruby Go

Top-Selling Points

Rate of Foreigners

Less Than

Frequency of English Usage

Less Than

Short overtime work (less than 20 hours) Japanese learning support Management In-house product development

Top-Selling Points

Rate of Foreigners
Less Than

Frequency of English Usage
Less Than

Short overtime work (less than 20 hours) Japanese learning support Management In-house product development

Related Skills

Management/System project Experience

Tech lead

Programming Language

JavaScript TypeScript Python Go

Design / Graphic / Creative tools

HTML CSS

Library/Framework

React Next.js Vue.js Nuxt.js Django

Cloud / Infrastructure / DevOps tools

AWS

Language Requirements

Required

Preferred

Language Requirements

Required

Japanese: Business

English: Greetings/None

JLPT: None

Preferred

No Data

Job Description

[Business Overview] 
The company develops and operates the "Hayaimon Series," a suite of 13 Real Estate Brokerage DX SaaS products. These solutions automate manual onsite tasks such as property data entry and vacancy confirmation. With implementation in over 3,500 stores nationwide, the company holds a top-tier market share and drives digital transformation across the industry.

[Recruitment Background]
As the product portfolio expands, enhancing service stability and standardizing the technical foundation has become an urgent priority. In this position, you will lead the design, construction, and operation of cloud infrastructure, driving business growth from a technical standpoint. During this transformative period, we are looking for someone who can take significant discretion as a playing leader to push the growth of both the organization and the products.

[Job Overview]
Lead the SRE team as a technical head. While remaining hands-on with design, construction, and operations, you will also provide technical support and manage the workflow of team members.

[Key Responsibilities]
・Lead the design, construction, and operation of cloud infrastructure (primarily AWS).
・Spearhead incident response, operational quality improvements, and performance tuning.
・Handle the design, development, and maintenance of in-house systems and web services.
・Promote technical and organizational improvement initiatives.
・Drive team building to enhance overall performance.
・Manage task follow-ups and provide technical mentoring for team members.

[Organizational Structure]
・Engineering Manager: 1
・Frontend Engineers: 20 (including 2 also handling server-side)
・Server-side Engineers: 2
・Infrastructure Engineers: 2

[Development Environment]
・Languages: JavaScript, TypeScript, HTML, CSS, Python, Go
・Frameworks/Libraries: React, Next.js, Vue.js, Nuxt.js, Django, FastAPI
・Testing: Jest, pytest
・Infrastructure: AWS (EC2, ECS, AWS Batch, RDS, Aurora Serverless V2, Glue, Athena, API Gateway, Terraform)
・Tools: Notion, QuickSight, Git, Slack, Google Meet, GitHub, GitHub Copilot, Claude Code, CodeRabbit, Figma

[Learning Environment] 
The company hosts internal study sessions twice a week and fully covers expenses for attending conferences outside the prefecture, ensuring employees stay updated on the latest technologies.

[Position Highlights]
・Exercise technical ownership in selecting, designing, and building scalable, highly reliable infrastructure that supports business growth.
・Work in a modern environment utilizing cloud-native managed services and IaC (Terraform) for automated infrastructure and review processes.
・Expand your technical scope beyond server management into areas like data analysis infrastructure design.
・Gain a holistic view of systems by bridging infrastructure knowledge with application development, allowing for optimized solutions across the entire stack.
・Build leadership experience by managing a small, elite team (approx. 1–2 members), including goal setting, 1-on-1s, and technical guidance.

[Organizational Culture]
・Welcoming New Challenges: Strong executive support for modern technologies like AWS Aurora Serverless V2 and ECS Fargate enables rapid and optimal technical selection.
・Pursuit of True SRE: We encourage building essential mechanisms reflecting your own SRE philosophy, such as toil reduction and SLO/SLI definition, rather than just routine operations.
・Respect for Autonomy: As the team is in its early stages, you have the opportunity to build and lead the ideal development and operational cycles from scratch with high speed.

Required Skills and Experiences

After sign up, you can browse all information.

If you already have a GitTap Account, please login.

Working Condition

[Expected Annual Salary]
6,000,000 JPY - 10,000,000 JPY

[Monthly Salary]
500,000 JPY - 833,000 JPY (Base salary: 380,952 JPY+ / Fixed overtime allowance: 119,048 JPY+ for 40 hours per month. Excess overtime paid separately.)

[Work Location]
Kayabacho Tower 12F, 1-21-2 Shinkawa, Chuo-ku, Tokyo
‐7-minute walk from Kayabacho Station (Tokyo Metro Hibiya Line)
‐8-minute walk from Hatchobori Station (JR Keiyo Line)
‐9-minute walk from Suitengumae Station (Tokyo Metro Hanzomon Line)

[Working Hours]
・Flextime System
‐Core time: 11:00 AM – 3:00 PM
‐Flexible time: Start 7:00 AM – 11:00 AM / End 3:00 PM – 10:00 PM
‐Standard working hours: 8 hours per day (approx. 160 hours per month)
*Average monthly overtime: 14 hours (previous year's result)
・Remote work: 2 days per week for engineers / 1 day per week for business staff

[Holidays and Leave]
・125 annual holidays: Full weekends off (Sat/Sun), public holidays, New Year, and summer leave.
・Paid leave: 5 days granted upon joining, additional 5 days after 6 months.
・Paid leave utilization rate: 81% (previous year's result)
・Others: Based on company calendar.

[Benefits and Welfare]
・Full social insurance coverage
・Commuting allowance
・High-spec office chairs and choice of MacBook Pro or Windows laptop
・Office lounge/kitchen, free drinks, free rice, and subsidized bento lunches
・Monthly recreation events, weekly shuffle lunches, and company trips
・Book purchase allowance (approx. 20,000 JPY/year), support for study groups/conferences, and certification support
・Influenza vaccinations

RECRUITMENT PROCESS

・Casual Interview (Online) ↓
・Document Screening & Online Aptitude Test ↓
・Interview (Online) ↓
・Final Interview (In-person)
*Please note that the selection process is subject to change depending on the position.

Business (description what they do)

・Planning and development of systems and applications (SaaS) for the real estate industry ・Development and operation of the "Hayaimon Series," a real estate brokerage business support system

Available Jobs in (iimon Inc.)

Recommended Jobs

C-cube Soft Co.,LTD

【System Development/PL/PM Potential】Great Welfare/19H Overtime/2 Days Off per week【Web Interview】

4.5M - ***M JPY | Tokyo

Java PHP C#

Fujisan Magazine Service Co., Ltd.

【開発マネージャー】出版社向けデジタルプラットフォーム／リモート／国内最大級の雑誌定期購読サイトなど

7M - ***M JPY | Tokyo

Agile Development Project Management Member management

Shippio, Inc.

Senior Front-End Engineer

7.5M - ***M JPY | Tokyo

Vue.js React JavaScript

GitTap Event（Bizmates, Inc.）

February 18th – Online Job Fair for Engineers!!｜No Camera Needed | Drop in Anytime

3M - ***M JPY | Hokkaido(+47)

C# .NET Go

[SRE Leader] Preparing for IPO | 13 In-house SaaS Products

[SRE Leader] Preparing for IPO | 13 In-house SaaS Products