Appier
Staff/Senior Machine Learning Scientist (Ad Cloud) - Tokyo,Japan
Tokyo, Japan
hirly Pro
Get in front of the people hiring at Appier
- Reach the hiring manager at Appier on LinkedIn, from your own account
- hirly applies to this job for you, with unlimited applications
- A resume and cover letter written for this job, unlimited
- The hiring manager and recruiter at Appier, with contact details
$49 a month · ₹1,999 for 30 days in India · cancel any time
Get past the screening software and onto a recruiter's desk
hirly rewrites your resume for this job — matching the keywords and skills in the posting, moving your most relevant experience to the top, and writing a cover letter to fit. About 30 seconds.
- Keywords matched to this posting
- Fit score before you apply
- Cover letter included
Matched against 3M live jobs from 220,000+ employers in 200+ countries.
Tailor my resume for this job →Apply from your AI assistant
Connect hirly to Claude or ChatGPT and ask it to apply to this job. hirly tailors your resume, fills the employer’s form and asks before sending.
Some employer sites stop an application at a CAPTCHA or sign-in and hand it back with a link. Applying needs a paid plan. Works with any assistant that supports MCP.
hirly's read of this role
- Seniority
- Lead / management
- Country
- JP
- Work mode
- On-site / unstated
- First seen by hirly
- 3 Sept 2026
Derived automatically from the posting. Upload your resume above to see how the role scores against it.
the posting
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.
Open to overseas candidates/Visa Support
This position is based in Tokyo, Japan. For international candidates, Appier's Japan office provides visa sponsorship to ensure a smooth transition to Japan.
The Impact You’ll Make at Appier
Appier is seeking a Senior Machine Learning Scientist to join our Advertising Cloud Optimization team , which leads the development of core machine learning algorithms driving campaign efficiency and advertiser ROI. Our programmatic advertising platform operates at a massive scale, handling over multi millions queries per second (QPS), all powered by our proprietary deep learning models for bidding, pricing, and personalized content delivery.
In this role, you’ll directly impact the efficiency and profitability of ads campaigns by improving models for bidding, pricing , and personalized content recommendation , while ensuring system robustness and scalability in a dynamic market environment.
What You’ll Work On
Design, implement, and productionize state-of-the-art ML models to improve campaign outcomes.
Analyze large-scale user and auction data to discover predictive patterns and alpha signals that enhance bidding and personalization.
Collaborate cross-functionally with engineering, product, and data teams to identify opportunities, define roadmaps, and deliver impactful solutions.
Continuously improve system performance through offline experimentation and online testing (e.g., A/B tests, incremental learning).
What We’re Looking For
Bachelor’s degree in Computer Science, Mathematics, EE, or related field; Master’s or PhD preferred.
4+ years of industry experience in ad tech , with a focus on performance optimization.
Proven experience in applied machine learning , especially in CTR prediction , recommendation systems .
Proficiency in Python and experience with modern ML frameworks ( PyTorch , TensorFlow , etc.).
Strong ownership and collaboration skills—able to lead end-to-end projects across product, data, and engineering.
Bonus: Experience working on high-throughput, low-latency real-time systems (e.g., RTB engines, stream inference).
#LI-AK1
Listed on hirly, a job board. hirly is not the employer: Appier is hiring for this role.
Browse similar roles
Want this one?
Upload your resume and hirly rewrites it for this job and writes the cover letter — in about thirty seconds, before you sign up.
Tailor my resume for this job