Top Tech Jobs & Startup Jobs in NYC, NY

As a Principal Product Engineer, you'll design and implement AI-driven frontend solutions, tackle engineering challenges, and lead technical guidance in a collaborative environment.

Lead strategy and execution for Yahoo Mail client platforms and shared services across web, iOS, Android and emerging surfaces. Own platform vision, roadmaps, and cross-team initiatives for authentication, identity, privacy, security, and client frameworks. Drive platform transitions, stakeholder alignment, and metrics for performance, reliability, cost, and developer productivity.

Build AI-native, employee-facing security products (agents, skills, plugins), own AI tooling infrastructure, advocate for developer experience, integrate APIs/MCPs, validate AI outputs, and produce clear documentation and lightweight UIs for broad internal audiences.

The Senior Software Engineer will architect and optimize AI-powered developer tools, enhance the SDLC, collaborate across teams, and mentor peers to improve engineering productivity.

Lead the global design organization for Yahoo Mail, defining design vision, collaborating with executives, and enhancing AI integration in user experiences.

Lead research and algorithm design for large-scale ranking, personalization, recommendation, ads targeting, causal uplift, dynamic pricing, and revenue forecasting. Design, train, evaluate, and productionize state-of-the-art ML, deep learning, and RL models (including transformer/LLM hybrids) on cloud platforms, establish experimental standards, and mentor research engineers.

Manage design, QA, launch, and operational health of transactional messaging across email, push, SMS and other channels. Translate product requirements into executable campaigns, validate payloads and personalization, troubleshoot production issues, run experiments, maintain documentation, and coordinate cross-functional stakeholders to ensure reliable, compliant messaging at scale.

Own strategy and execution of paid search campaigns across platforms. Manage keyword strategy, bidding, ad creative, landing page testing, audience layering, budget pacing, and performance analysis. Run A/B experiments, collaborate with Data Science on bidding and attribution models, adopt AI-driven features, and maintain platform relationships to drive efficient customer acquisition and growth.

Lead and scale a data science and experimentation organization for Growth & Media. Own experimentation platforms and causal inference, build predictive and audience models, architect data pipelines and model-serving infrastructure, embed ML into marketing workflows, increase testing velocity, and present actionable findings to senior leadership to optimize acquisition, engagement, and budget allocation.

Lead ASO strategy and execution for Yahoo's flagship apps across Apple App Store and Google Play. Build keyword intelligence, run metadata and creative A/B tests, leverage third-party ASO and analytics tools, influence product quality signals with Product and Engineering, hire and lead an ASO team, and prepare for emerging AI-driven app discovery surfaces to drive sustainable organic growth.