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Updated 2024-04-25
Activated 2024-04-04

[Backend Engineer] Senior Development Engineer / API development and operation for travelers / Function and performance improvement
Automatically translated job page

This posting is managed by: レバレジーズ株式会社/Leverages Co., Ltd.
Company Name Company is not publicly visible
Job Type
レバレジーズ株式会社/Leverages Co., Ltd.
IT (PC, Web, Unix) - Back-End Engineer
Location Asia Japan Tokyo Setagaya

Job Description [Job Description]
The Travel Development Department is a part of the same group.
Through API development, we aim to imagine a future where everyone involved in travel is happier.
The main job is to develop and operate APIs for the renewal of sites used by travelers and travel businesses around the world.
This position will suit those who are willing to grow with the business.
<Specific Job Description>
Working with team members, product managers, front-end engineers, related teams within the group (payment, points, membership), etc., we will develop and operate APIs for functions for travelers.
You will lead the early renewal of an existing site that handles large amounts of traffic to success.
After the renewal of the existing site, we will continuously improve API functions, tune performance, monitor and respond to alerts, and work with technical support engineers to investigate user inquiries.
You will solve problems.
You will be a role model for the next generation of engineers with your solid technical skills and lead the growth of the organization.
Company Info [Business description]
The company provides services in a wide range of fields, including internet services and FinTech (financial) services.
By organically linking these services with our membership as the core, we have formed a unique "ecosystem (economic zone)" that is unlike any other.

<Internet-related>
- Domestic services, markets, overseas, travel

<Finance-related>
- Banking, electronic money, credit cards, securities, insurance

<Other>
- Communications, professional sports
Job
Requirements		 [Required requirements]
・Large-scale Web API development and operation experience using Java and Spring Framework
・Development and operation experience in Linux environment
・Experience in table design/query creation to efficiently use RDBMS such as Oracle
・Using GitHub/Bitbucket or similar version control system and Pull Request
Experience with distributed development in several teams
・Practical experience in code and design reviews
・Proven track record of improvements in architecture, tuning, and performance analysis
・Web application operation/tuning experience, security knowledge
・Experience in software architecture design and middleware selection
・Practical experience in development using automated tests such as xUnit/xSpec
・Database schema design/application implementation that takes into account coordination between systems
Those who can
・Experience in API interface design
・Project management or team leader experience
・TOEIC 800 points or more (before joining the company)

[Welcome requirements]
・Schema design and efficiency for systems other than RDBMS (MongoDB/Elasticsearch, etc.)
Create a query
・A track record of business process/operation improvement across organizations and services based on self-initiated ideas
・Practical experience in development using IaaS, CaaS, and PaaS
・Experience developing OSS libraries, presenting at study groups, and writing books
・BtoBtoC application development experience
・Ability to discover middleware problems and improve performance at the source code level
・Experience in API design and development using GraphQL, gRPC, etc.
・Development and operational experience in Microservices architecture
・Service on-call support experience
・Development experience with web application frameworks and libraries, etc.
・Knowledge of security in web applications
・Experience in launching new services and taking on challenges during the growth period of services
・Experience leading and managing developers
・Understanding tracking cookies
・Experience in planning, requirements definition, design, development, testing, and operation
English Level Business Conversation Level (TOEIC 735-860)
Japanese Level Native Level
Chinese Level None
Salary JPY - Japanese Yen JPY 6000K - JPY 10000K   
Other Salary
Description		 ・Monthly salary system
・Monthly salary 428,571 to 714,285 yen
・Basic salary 321,961 to 536,602 yen
・Fixed overtime pay: 106,610 to 177,683 yen (Overtime pay: Overtime pay will not be paid to those with an annual income of 6.5 million yen or more as they will be employed as a manager or supervisor or will be employed under the specialized work type discretionary labor system (deemed working hours 7.5 hours/day)
Holidays ・Complete 2-day weekend system (Saturday and Sunday)
·holiday
・Summer vacation (3 days)
・Winter vacation (12/30-1/3)
・Annual paid vacation
・Marriage leave
・Hospital leave during pregnancy
・Prenatal and postnatal leave
・Spouse maternity leave
·Childcare leave
・Child nursing leave
·special holiday
・123 days off per year
Job Contract
Period		 ・Trial period 3 months
・No changes to working conditions during the trial period
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