Jobs at adjoe

Build and maintain high-performance iOS advertising SDKs and libraries used across global mobile applications. Develop native ad formats, video players, and web views; optimize rendering, memory, CPU usage, and stability. Integrate with mediation platforms and ad servers while supporting IAB standards, impression tracking, viewability, and attribution. Maintain CI/CD automation and distribute artifacts through Swift Package Manager, CocoaPods, fastlane, and GitLab CI. Expand observability and crash reporting, with optional cross-platform and Android contributions.

Own the architecture, reliability, and evolution of high-throughput Go microservices powering real-time ad targeting and monetization. Define service boundaries, concurrency models, streaming standards, data patterns, resilience practices, and database migrations across Kafka, SQS/SNS, Kinesis, DynamoDB, MySQL, Druid, and Athena. Partner with Data Science on model-serving infrastructure, establish organizational reliability standards, lead technical migrations, communicate through RFCs and ADRs, and mentor senior engineers.

Lead adjoe’s consumer apps demand partnerships business across EMEA. Identify and win new advertiser relationships, sell rewarded advertising to consumer apps, launch campaigns, and develop long-term partnerships. Use mobile marketing KPIs such as CPI, CPA, ROAS, retention, LTV, and incrementality. Collaborate with Marketing and Product on positioning, sales materials, and case studies while representing the company at industry events.

Manage technical onboarding and SDK integrations for Korean app publishers. Troubleshoot mobile integration issues, provide technical strategy, use data and SQL to improve publisher KPIs, support QBRs, document integrations, and collaborate with Product, Engineering, Growth, and international teams to improve adtech products and drive publisher revenue growth.

Own and prioritize the Mobile SDK product backlog, translating customer, developer, business, and technical needs into requirements and delivery priorities. Lead features from discovery through release and post-launch evaluation while coordinating Android, iOS, backend, QA, and other stakeholders. Analyze developer feedback, SDK telemetry, experiments, and KPIs to improve integrations and developer experience. Support release planning, documentation, adoption tracking, and stakeholder communication.

Own demand and supply partnerships in Korea: source and close mobile gaming advertisers and app publishers, manage pipeline, conduct market research, onboard clients, prepare sales presentations, and coordinate with internal teams to grow revenue and optimize partner monetization.

Lead experimentation and A/B testing analyses using SQL and Python on large-scale data (100TB). Design experiments, compute sample sizes, apply variance reduction, detect anomalies, automate reporting and dashboards, and collaborate with product, engineering, and growth teams to translate results into business decisions.

Analyze machine learning model performance, investigate gaps between offline predictions and real-world outcomes, define model and business metrics, and design A/B tests. Build dashboards and automated reports, evaluate statistical significance and business impact, and translate complex findings into recommendations for Data Science, Product, and Business teams. The role also documents reusable analytical methods and challenges technical and product decisions with data.

Analyze enterprise publisher data to monitor contractual commitments and business KPIs, identify risks, forecast performance, and uncover growth opportunities. Build automated reports, dashboards, and alerts, investigate trends, and prepare insights for Quarterly Business Reviews. Partner with Growth Managers and Partner Operations to support informed decisions and improve publisher outcomes.

Conduct advanced machine learning research and translate state-of-the-art generative AI, recommendation, embedding, and ranking methods into high-throughput production systems. Build multi-stage recommendation pipelines, optimize large models for sub-millisecond latency, and develop user and ad embeddings using PyTorch and GPU infrastructure. Lead architectural discussions, mentor junior scientists, and guide research direction across systems serving hundreds of millions of users.

Develop and productionize reinforcement learning, optimization, and control-theory algorithms for real-time bidding, auctions, budget pacing, and allocation. Translate research into sub-millisecond, high-throughput systems using large-scale Bayesian inference and behavioral data. Lead technical architecture, define mathematical objectives with product and engineering teams, mentor junior scientists, and guide research direction across adtech products serving hundreds of millions of users.

Manage and grow a portfolio of app publisher partners in the adtech ecosystem. Identify upselling and monetization opportunities, analyze CPI, CPM, CPC, ARPDAU, and CTR metrics, and implement performance improvements. Build partner relationships, deliver data-driven reports and QBRs, translate feedback into technical requirements, and collaborate with Product, Tech, and Business teams to resolve integration blockers and drive portfolio growth.

Manage Tokyo office and facility operations, vendors, inventory, procurement, and IT assets. Handle local HR administration, onboarding, offboarding, employee expenses, documentation, and compliance. Support Sales through CRM and data tracking, partner outreach, client dinners, venue bookings, and events. Coordinate with headquarters, assist Talent Acquisition, and provide Japanese-English translation while serving as a trusted employee support contact.

Build and operate scalable Go backend services within adjoe’s distributed adtech platform. Responsibilities include optimizing high-volume production applications, designing Kafka and SQS/SNS-based microservices, aggregating billions of API events, optimizing Druid, MySQL, Redis, and DynamoDB access, integrating machine-learning algorithms, supporting partner-facing APIs, and managing infrastructure with Terraform, Docker, and serverless technologies.

Analyze mobile advertising marketplace performance across bid rates, win rates, timeouts, eCPM, rendering, traffic efficiency, and costs. Design and evaluate A/B tests for product features, pricing, and traffic algorithms; query large datasets with SQL; identify anomalies and optimization opportunities; and build automated BI dashboards for product, engineering, and demand teams. Manage analytics projects and rapid investigations in an agile, fast-paced environment.

Perform manual and exploratory testing across frontend and backend, validate APIs and data using SQL, contribute to UI/API automation (Playwright/Cypress/Postman), document bugs in Jira, participate in sprint planning, and own quality and regression testing before releases.

Build and maintain high-throughput Go microservices handling 2M+ daily interactions. Design event-driven pipelines (Kafka/SQS/SNS/Kinesis), optimize APIs and queries across DynamoDB, MySQL, Druid, and Athena, integrate ML algorithms with the Data Science team, implement secure callbacks (OAuth2, mTLS, HMAC), and collaborate across international teams. Use Terraform, Docker, and serverless tooling to deploy reliable, scalable systems.

Lead and execute global creative direction for adjoe, managing a 4-5 person design team across time zones. Ensure brand consistency across channels, translate commercial objectives into high-converting design, develop scalable templates and brand guidelines, and deliver assets for web, events, presentations, data visualization, and performance marketing. Act as player-coach and collaborate closely with Growth, Product Marketing, and Content.

Lead technical analyses to detect and prevent ad fraud at scale. Build and optimize SQL/Python data pipelines, apply anomaly detection methods, design experiments, automate reusable analytics frameworks, and communicate findings to technical and non-technical stakeholders to drive business decisions.

Create and maintain developer-facing documentation (API references, SDK guides, integration tutorials, sample apps). Build demo apps in Swift/Kotlin, contribute to Docusaurus/Markdown tooling, use JavaScript/TypeScript/HTML for components, debug integrations using SQL, logs, and dashboards, and collaborate cross-functionally to improve developer experience and reduce integration friction.