All active Kafka roles based in Japan.
Pick a job to read the details
Tap any role on the left — its description and apply link will open here.
Share this job
About Appier
Appier is a software-as-a-service (SaaS) company that uses artificial intelligence (AI) to power business decision-making. Founded in 2012 with a vision of democratizing AI, Appier’s mission is turning AI into ROI by making software intelligent. Appier now has 17 offices across APAC, Europe and U.S., and is listed on the Tokyo Stock Exchange (Ticker number: 4180). Visit www.appier.com for more information.
About the role
We're looking for an experienced data engineer to build and scale our data infrastructure. You'll work on mission-critical systems that power our data-driven decision making, designing robust pipelines and optimizing distributed platforms that process massive datasets.
Responsibilities
About you
[Minimum qualifications]
[Preferred qualifications]
#LI-AK1
Ready to apply?
Apply to Appier
Share this job
|
About Paidy Inc. |
|
Paidy is Japan's pioneer and leading BNPL service company. At Paidy we believe in creating simple, instant experiences to take the hassle out of shopping with a touch of magic. Paidy offers instant, monthly-consolidated credit to consumers by removing hassles from payment and purchase experiences. Paidy uses proprietary models and machine learning to underwrite transactions in seconds and guarantee payments to merchants. Paidy increases revenue for merchants by reducing the number of incomplete transactions, increasing conversion rates, boosting average order values, and facilitating repeat purchases from consumers. Paidy has reached an agreement to join PayPal, the global payments company. Paidy will continue to operate its existing business, maintain its brand and support a wide variety of consumer wallets and marketplaces by providing convenient and innovative services. Paidy continues to innovate to make shopping easier and more fun both online and offline. For more information, please visit http://www.paidy.com. |
|
About Position |
|
We are looking for a passionate, innovative and dedicated Senior Software Engineer, who is ready to make an impact by developing and improving backend systems (as well as some frontend systems), as well as directly communicating with Paidy’s merchants. The Senior Software Engineer is responsible for building and maintaining the technical infrastructure that powers Paidy's merchant platform, including onboarding systems, merchant dashboards, and third-party integrations with e-commerce platforms. You will architect and deliver API solutions, SDKs, and integration tools while ensuring high system availability, performance optimization, and robust operational support. As a senior member of the team, you'll drive architectural decisions, collaborate with product and business stakeholders to translate merchant requirements into technical solutions, and support the establishment of engineering best practices that balance rapid feature delivery with system reliability and security. |
|
Key Role and Responsibilities |
Our tech stack:
|
|
Skills and Requirements |
|
Required skills:
Nice to have:
The Paidy team will ask about your user experiences with Paidy Apps during the interview. Please download the Paidy App and try it out!
For those who are not able to download Paidy App, due to the regional restrictions, please be advised that you download the similar App, such as Klarna, Afterpay, Affirm and so forth, and come up with your opinions on these applications and services. |
|
What We Offer You |
|
|
Paidy Values |
|
Be a winner / 勝ちにこだわる
Own it and deliver, together / 共に結果を出す
Be a valuable team member / 価値を認められるメンバーになる
|
Ready to apply?
Apply to Paidy Inc/Paidy合同会社
Share this job
About Appier
Appier is an AI-native Agentic AI as a Service (AaaS) company that uses artificial intelligence (AI) to power business decision-making. Founded in 2012 with a vision of democratizing AI, Appier’s mission is turning AI into ROI by making software intelligent. Appier now has 17 offices across APAC, Europe and U.S., and is listed on the Tokyo Stock Exchange (Ticker number: 4180). Visit www.appier.com for more information. Our EDP team builds core data backend capabilities that power critical product experiences across ingestion, profile processing, and serving.
About the role
We are hiring a Senior Software Engineer, Data Backend to design and operate production-grade data backend systems at scale. This role combines backend service engineering and data platform engineering, with strong focus on reliability, performance, and cost efficiency in a cloud-native environment.
You will work on high-throughput APIs/services in Go, as well as data processing and workflow components in Python/Spark/SQL, partnering closely with product, platform, and data teams.
Design, build, and maintain backend services and data platform components.
Develop and optimize streaming and batch data workflows.
Improve reliability and operability (monitoring, alerting, incident prevention/recovery).
Improve data quality and consistency through schema/contracts and validation mechanisms.
Diagnose and resolve production issues across service and data layers.
Drive performance and cost optimization initiatives for large-scale workloads.
Collaborate across teams to deliver roadmap milestones.
Mentor engineers and contribute to engineering standards and review culture.
About you
[Minimum qualifications]
6+ years of software engineering experience in backend/data-intensive systems.
Strong proficiency in Go (required).
Strong proficiency in Python (required).
Strong proficiency in SQL (required).
Hands-on experience with distributed data systems (e.g., Kafka, Spark/Databricks).
Experience operating services/pipelines in cloud production environments (GCP preferred).
Solid understanding of reliability practices: observability, on-call, incident response.
Strong communication and ownership; able to drive ambiguous projects to completion.
[Preferred qualifications]
Experience with Databricks/Delta Lake/Lakehouse architectures.
Experience with Kubernetes/GKE and Terraform/IaC.
Experience with data governance (lineage, access control, PII handling).
Experience with identity/profile systems (entity resolution, merge logic).
Experience with FinOps/cost optimization for platform workloads.
[Language]
Fluent in English.
Work on high-impact, business-critical data backend systems.
Own real production outcomes across scale, quality, and cost.
Collaborate with strong cross-functional teams in AI + data.
Grow technical leadership while staying hands-on.
Open to overseas candidates/Visa Support
This position is open to based in Taipei, Taiwan or Tokyo, Japan. For international candidates, Appier's Japan office provides visa sponsorship to ensure a smooth transition to Japan.
#LI-AK1
Ready to apply?
Apply to Appier
Share this job
|
About Paidy Inc. |
|
Paidy is Japan's pioneer and leading BNPL service with the mission to spread trust through society and to give people room to dream. Paidy offers instant, monthly-consolidated credit to consumers by removing hassles from payment and purchase experiences. Paidy uses proprietary models and machine learning to underwrite transactions in seconds and guarantee payments to merchants. Paidy increases revenue for merchants by reducing the number of incomplete transactions, increasing conversion rates, boosting average order values, and facilitating repeat purchases from consumers. Paidy has reached an agreement to join PayPal, the global payments company. Paidy will continue to operate its existing business, maintain its brand and support a wide variety of consumer wallets and marketplaces by providing convenient and innovative services. Paidy continues to innovate to make shopping easier and more fun both online and offline. For more information, please visit http://www.paidy.com. Please note that you must already hold valid working rights to work in Japan. |
|
About Position |
|
The Data Engineering Department provides the technical service around the company’s business data and information, and its derivatives. This service is a crucial part of Paidy's external surface and internal business intelligence. The Department provides services including capturing datasets from any business activities, performing curation, maintaining its availability, deriving strategy and implementing solutions covering integrity, resilience and scalability. In addition, by assisting business initiatives on data analytics and reporting. As per the component stack, the Data Engineering Department and its services will depend on most, if not all activities within Paidy. |
|
Key Role and Responsibilities |
|
The Senior Data Engineer should be able to understand the business, technical requirements and implement solutions accordingly. (S)he should also have hands-on experience in application development, in-depth knowledge in programming languages and data storage technologies. Duties and responsibilities include: ● Supporting the well-being of deployed data services. ● Enhancing the operation and monitoring facilities. ● Implement scalable data pipeline from various Paidy platforms, data warehouse, or 3rd party services. ● Following business or technical initiatives, implement data solutions accordingly. ● Being domain expert in data semantic, providing advisory on business intelligence requests. ● Managing reporting facilities; implementing and promoting self-service reporting tools. ● Performing evaluation of technology, POC and feasibility analysis. ● Support and manage a growing team of Data Engineers |
|
Skills and Requirements |
|
● A bachelor’s degree in computer science, Information Technology or a related subject ● 5+ years of experience in software development. ● Strong software development skills in OOP languages. ● Good knowledge of resource constraints analysis and performing tuning. ● Good knowledge of data structures. ● Strong knowledge and experience on various RDMS, NoSQL and big data platforms including Cassandra, kafka, DynamoDB, Postgres, Prefect, Airflow etc… ● Able to follow SDLC methodologies, deliver proper documentation. ● Effective communication skills, able to communicate project status and problem effectively. ● Creative yet detail oriented, good at solving problems and deriving solutions. ● Willing to work in a dynamic environment and pick up new technologies. ● Experience leading a team of 3 or more engineers The Paidy team will ask about your user experiences with Paidy Apps during the interview. Please download the Paidy App and try it out! ● iOS: https://apps.apple.com/jp/app/paidy/id1220373112 ● Android: https://play.google.com/store/apps/details?id=com.paidy.paidy&hl=en&gl=US For those who are not able to download Paidy App, due to the regional restrictions, please be advised that you download the similar App, such as Klarna, Afterpay, Affirm and so forth, and come up with your opinions on these applications and services. |
|
What We Offer You |
|
● Diversified team with 230+ colleagues from 30+ countries ● Exciting work opportunities in a rapid-growing organization ● Cross-functional collaboration ● Hybrid remote work model - minimum 2 times in office per week (subject to change at company discretion) ● Competitive salary and benefits |
|
Paidy Values |
|
Be a winner / 勝ちにこだわる ● Always seek to beat expectations. / 期待値を超える為に常に努力する。 ● Display surprising speed and resourcefulness. / 人をスピードと機知で驚かす。 ● Overcome weaknesses by leveraging the strength and help of others to win. / 仲間の強みを活かしたり協力を得ることで、自身の弱みや足りない点を克服する。 Own it and deliver, together / 共に結果を出す ● Fully support the final decision even if at times you may disagree. / たとえ意見が対立することがあったとしても、最終決定を全面的に受け入れ支持する。 ● Acknowledge and gather the power of others, by communicating and collaborating with them. / 仲間の力を認めて活用し、積極的にコミュニケーションをとり、協力する。 ● Show a will to own actions and go the extra mile without being asked. / 行動について強いオーナーシップを持ち、言われずとも業務を遂行しきる覚悟を持つ。 Be a valuable team member / 価値を認められるメンバーになる ● Strive to play an integral role. / 替えの効かない役割を果たす。 ● Embrace and bridge differences in perspective, language, and culture. / 異なる意見・考え方、言語と文化の架け橋になる。 ● Don’t compromise - raise the bar for yourself and others. / スタンダードを上げ続けることに妥協しない。 |
Ready to apply?
Apply to Paidy Inc/Paidy合同会社
Share this job
Ultra Tendency is a global data and AI consultancy with teams across Europe, Asia, and the Americas. As we continue expanding our presence in Japan, we are looking for a Senior Data Engineer – Databricks to join our growing Tokyo team and contribute to the development of scalable data platforms for international clients.
In this role, you will work closely with engineers, data scientists, and architects to design and implement robust data solutions using modern cloud and data technologies.
Competitive compensation will be provided in line with the Japanese technology market, based on experience and qualifications.
YOUR RESPONSIBILITIES
YOUR EXPERIENCE
WHAT WE OFFER
Interested?
We would be happy to hear from you. Please apply or reach out if you would like to learn more about the role and our team in Japan.
Ultra Tendency is a leading international Data Engineering consultancy specializing in Big Data, Cloud, Streaming, IIoT, and Microservices. We design, build, and operate large-scale, data-driven applications for major enterprises including the European Central Bank, HUK-Coburg, Deutsche Telekom, and Europe’s largest car manufacturer. Founded in Germany in 2010, Ultra Tendency has grown to 8 offices across 10 countries on 3 continents, serving a trusted and expanding client base.
We don’t just use technology—we create it. Our team contributes to over 20 open-source projects, including Ansible, Terraform, NiFi, and Kafka, making a visible impact on both technology and business. Enterprises choose Ultra Tendency because we solve the problems others cannot.
We thrive on challenges. Here, you’ll work on unique projects you won’t find elsewhere and become part of a knowledge-driven, supportive community—not a rigid hierarchy. Continuous learning, feedback, and collaboration drive both personal and professional growth, while maintaining a healthy work-life balance.
Ultra Tendency evaluates applications based on skills and business fit. We welcome candidates from all backgrounds, regardless of race, ethnicity, national or social origin, disability, sex, sexual orientation, or age.
Data privacy statement: Data Protection for Applicants – Ultra Tendency
Ready to apply?
Apply to Ultra Tendency
Share this job
Ultra Tendencyは、欧州、アジア、南北アメリカにチームを擁するグローバルなデータ/AIコンサルティング企業です。日本での事業拡大に伴い、成長中の東京チームに加わり、海外クライアント向けのスケーラブルなデータプラットフォーム開発に携わっていただくシニアデータエンジニア(Senior Data Engineer)– Databricksを募集しています。
このポジションでは、エンジニア、データサイエンティスト、アーキテクトと密に連携し、最新のクラウド/データ技術を用いた堅牢なデータソリューションの設計・実装を担当していただきます。
給与は、日本のテクノロジー市場水準を踏まえ、経験・スキルを考慮のうえ、競争力のある条件をご提示します。
業務内容
応募資格
待遇・福利厚生
ご興味をお持ちの方へ
ご興味をお持ちいただけましたら、ぜひご応募ください。ポジションや日本チームについて詳しくお知りになりたい場合も、お気軽にご連絡ください。
Ultra Tendency is a leading international Data Engineering consultancy specializing in Big Data, Cloud, Streaming, IIoT, and Microservices. We design, build, and operate large-scale, data-driven applications for major enterprises including the European Central Bank, HUK-Coburg, Deutsche Telekom, and Europe’s largest car manufacturer. Founded in Germany in 2010, Ultra Tendency has grown to 8 offices across 10 countries on 3 continents, serving a trusted and expanding client base.
We don’t just use technology—we create it. Our team contributes to over 20 open-source projects, including Ansible, Terraform, NiFi, and Kafka, making a visible impact on both technology and business. Enterprises choose Ultra Tendency because we solve the problems others cannot.
We thrive on challenges. Here, you’ll work on unique projects you won’t find elsewhere and become part of a knowledge-driven, supportive community—not a rigid hierarchy. Continuous learning, feedback, and collaboration drive both personal and professional growth, while maintaining a healthy work-life balance.
Ultra Tendency evaluates applications based on skills and business fit. We welcome candidates from all backgrounds, regardless of race, ethnicity, national or social origin, disability, sex, sexual orientation, or age.
Data privacy statement: Data Protection for Applicants – Ultra Tendency
Ready to apply?
Apply to Ultra Tendency
Share this job
FEQ127R214
As a Partner Solutions Architect you will work with Databricks' Consulting and System Integrator (C&SI) partners, teammates, and with the technical and sales team members who work directly with our customers. You will develop 'technical champions' within our top C&SI Partners, providing enablement on technical matters related to the Databricks product. Working with our partners, you will help our customers to achieve tangible data-driven outcomes through the use of our Databricks Data Intelligence Platform, helping data teams complete projects and integrate our platform into their enterprise Ecosystem. As a member of our team, you will exercise and develop expertise in those areas, using open-source projects such as Apache Spark™, MLflow, and Delta Lake; and major public cloud infrastructure and services. the product. You will use this expertise to become a trusted advisor to C&SI partners. You will report to the Senior Director, APJ PS.
The impact you will have:
What we look for:
Benefits
About Databricks
Databricks is the data and AI company. More than 10,000 organizations worldwide — including Comcast, Condé Nast, Grammarly, and over 50% of the Fortune 500 — rely on the Databricks Data Intelligence Platform to unify and democratize data, analytics and AI. Databricks is headquartered in San Francisco, with offices around the globe and was founded by the original creators of Lakehouse, Apache Spark™, Delta Lake and MLflow. To learn more, follow Databricks on Twitter, LinkedIn and Facebook.
Benefits
At Databricks, we strive to provide comprehensive benefits and perks that meet the needs of all of our employees. For specific details on the benefits offered in your region click here.
Our Commitment to Diversity and Inclusion
At Databricks, we are committed to fostering a diverse and inclusive culture where everyone can excel. We take great care to ensure that our hiring practices are inclusive and meet equal employment opportunity standards. Individuals looking for employment at Databricks are considered without regard to age, color, disability, ethnicity, family or marital status, gender identity or expression, language, national origin, physical and mental ability, political affiliation, race, religion, sexual orientation, socio-economic status, veteran status, and other protected characteristics.
Compliance
If access to export-controlled technology or source code is required for performance of job duties, it is within Employer's discretion whether to apply for a U.S. government license for such positions, and Employer may decline to proceed with an applicant on this basis alone.
Ready to apply?
Apply to Databricks
Share this job
About Appier
Appier is an AI-native Agentic AI as a Service (AaaS) company that uses artificial intelligence (AI) to power business decision-making. Founded in 2012 with a vision of democratizing AI, Appier’s mission is turning AI into ROI by making software intelligent. Appier now has 17 offices across APAC, Europe and U.S., and is listed on the Tokyo Stock Exchange (Ticker number: 4180). Visit www.appier.com for more information.
About the role
Appier's Playable Ads team (https://www.appier.com/en/blog/what-is-playable-ads) builds AI-powered playable and video ad experiences that drive dramatically higher engagement and conversion for the world's leading apps and games. We're looking for a Senior Backend Developer with deep expertise in distributed systems and modern backend architecture to design and build the scalable, high-performance services behind these experiences — from creative generation pipelines to the infrastructure that brings our ML models to production. You'll work across microservices, messaging systems, data persistence layers, and system performance optimization, while partnering with ML scientists on MLOps workflows to continuously ship and serve new model versions to end users. You'll also collaborate closely with frontend engineers and product managers to deliver seamless, cross-functional outcomes.
If you're passionate about building backend systems that operate at scale, thrive in cross-functional teams, and want your code to directly power AI-driven ad experiences reaching millions of users, we'd love to talk.
What You'll Work On
What We're Looking For
[Minimum qualifications]
[Preferred qualifications]
[Language]
Fluent in English, Japanese language proficiency is not required.
Open to overseas candidates/Visa Support
This position can be based in Tokyo, Japan or Taipei, Taiwan. For international candidates, Appier's Japan office provides visa sponsorship to ensure a smooth relocation transition to Japan.
#LI-AK1
Ready to apply?
Apply to Appier
Share this job
About Paidy, Inc.
Paidy is Japan's pioneer and leading BNPL service with the mission to spread trust through society and to give people room to dream.
Paidy offers instant, monthly-consolidated credit to consumers by removing hassles from payment and purchase experiences. Paidy uses proprietary models and machine learning to underwrite transactions in seconds and guarantee payments to merchants. Paidy increases revenue for merchants by reducing the number of incomplete transactions, increasing conversion rates, boosting average order values, and facilitating repeat purchases from consumers.
Paidy has reached an agreement to join PayPal, the global payments company. Paidy will continue to operate its existing business, maintain its brand and support a wide variety of consumer wallets and marketplaces by providing convenient and innovative services.
Paidy continues to innovate to make shopping easier and more fun both online and offline. For more information, please visit http://www.paidy.com.
About Position
The position is within the risk engineering team, which is tasked with designing, building, maintaining and operating the set of services that underwrites Paidy’s transactions. These services use machine learning models to predict credit risk and statistical models to detect, block and alert on fraudulent transactions in milliseconds. Recently our scope of work expanded to include designing, building and maintaining new internal web application tools that empower internal teams to experiment with and implement better fraud detection/prevention methods, credit risk policies, and collections policies to further maximize our revenue. We enjoy using Scala in a functional and pragmatic way to ease the burden of delivering quality backend software. We prefer simple solutions that allow us to iterate quickly and deploy them to production often. We value ownership and trust each other to deliver quality work in a timely manner.
Key Role and Responsibilities
Skills and Requirements
For those who are not able to downloadPaidyApp,duetotheregional restrictions, please be advised that you download the similar App, such as Klarna, Afterpay, Affirm and so forth, and come up with your opinions on these applications and services.
What We Offer You
Paidy Values
Be a winner / 勝ちにこだわる
Own it and deliver / 結果を出す
Play an integral role / 大切なピースになる
Ready to apply?
Apply to Paidy Inc/Paidy合同会社
Cookies & analytics
This site uses cookies from third-party services to deliver its features and to analyze traffic.