掲載日 ・ 2026/05/19

株式会社ジーニー

株式会社ジーニー:【AD Platform】Senior Engineer(EN)

1000~1800万円
東京都

ジーニー

広告・PR

テックリード

1000万~

会社名

株式会社ジーニー

会社概要

マーケティング領域における自社開発の様々なプロダクトを、企業の課題に応じて導入提案〜定着支援〜開発〜実装〜運用~成功まで、全てのフェーズにおいて対応しています。広告とSaaSプロダクトのアクティブ取引社数は5,900社を超えています。

ポジション

【AD Platform】Senior Engineer(EN)

仕事内容

About Geniee Inc.
We were founded in April 2010 with the goal of creating a global tech company from Japan, like GAFA. We went public only seven years after our founding and have kept increasing both revenue and profit since then. We are a fast-growing company.

As a marketing technology company, we operate an ad platform business, a marketing SaaS business, and a digital PR business. We are a rare company that has both ad technology and marketing technology products, and we continue to grow.

In 2020, we were selected in the Financial Times “High-Growth Companies Asia-Pacific” ranking. In 2023, we established JAPAN AI Inc. as a wholly owned subsidiary to focus on the cutting-edge AI business. JAPAN AI’s technology creates synergy with Geniee’s existing products, and the group is achieving high growth. By offering state-of-the-art solutions, we help customers improve efficiency and productivity.

Note: The “High-Growth Companies Asia-Pacific 2020” ranking surveyed more than 50 million companies in 12 countries in the Asia-Pacific region. It selected 500 companies based on revenue growth from 2015 to 2018. Geniee ranked 357th overall and 11th among technology companies from Japan.

https://geniee.co.jp/news/20200525/232

Why We’re Hiring
We are seeking a senior engineer who can take technical ownership of our Ad Platform business, overseeing both SSP and DSP domains, propose and drive platform updates, and strategically develop the ad platform business from a technical perspective. This is an important role to lead discussions on technical design and architecture, solve complex technical problems, raise the team's technical level, and support business growth by capturing industry trends and data to outcompete rivals.

Responsibilities / Job Description
Technical leadership in a high-traffic environment
Lead performance optimization and incident response using deep knowledge of Linux and CPU for a domestic-scale platform that processes 3 billion impressions per day within 100 ms.
Lead modernization and adaptation to industry changes
Keep the team competitive by quickly catching up with fast-changing ad-tech industry trends. Beyond feature development, rapidly capture market opportunities and drive quick cycles of verification, implementation, and release.
Improve product quality and continuous improvement
Proactively discover and fix both known and latent issues in a large-scale product, taking ownership of improvements.
Build validation/test environments and quality assurance
To minimize production incidents, help build and maintain verification/test environments that match production in scale and complexity, in parallel with feature development.
Migrate long-lived products incrementally to modern technologies
Help establish frameworks and processes to gradually migrate legacy, long-running products to modern technologies while maintaining stability.

・従事すべき業務の変更の範囲
 会社の定める業務

・有期労働契約を更新する場合の基準に関する事項(通算契約期間又は更新回数の上限を含む)
 更新の上限なし

求める経験・スキル

Required Qualifications
3+ years of large-scale development experience with JavaScript/TypeScript
5+ years of web system development experience
Experience designing system architectures
Experience owning and solving technical challenges with initiative
Business-level communication skills in either English or Japanese (one is required)
Preferred Qualifications
Experience collaborating with data scientists
Development and operation experience with high-traffic systems
Management or mentoring experience
Development experience in the ad-tech industry
Experience operating systems with high availability and low latency considerations
Experience maintaining large open-source software projects
Experience writing technical blogs or speaking at conferences

労働条件

雇用形態

正社員

年収

1000~1800万円

勤務地

東京都

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