Top Tech Jobs & Startup Jobs in NYC, NY

Build production software and reusable AI-enabled products through customer-embedded delivery work. Develop prototypes into hardened, deployable products; define roadmaps, rollout plans, and adoption outcomes; contribute reusable capabilities to Mosaic; and maintain customer engagement after launch. The role requires strong Python and TypeScript skills, product judgment, communication, and comfort working in ambiguous environments with customer teams.

The Senior Platform Engineer will build infrastructure for AI systems, design complex workflows, and develop reusable abstractions while collaborating with customers.

Lead the companys narrative and product language: develop naming systems, craft thought leadership and marketing collateral, translate technical AI work for varied audiences, establish brand voice, and embed with product and engineering teams. First hire responsible for defining and executing content strategy across website, decks, case studies, and external communications.

As a Research Engineer/Scientist in Reinforcement Learning, you will develop RL methods, maintain experimental infrastructure, and collaborate to enhance AI solutions in critical sectors.

Founding data hire who builds end-to-end pipelines and models to convert messy enterprise data into AI-ready assets, defines data packs and ontologies, and builds internal tooling and automation so work compounds across customers. Works embedded with customer teams, partners with product and AI engineers, and makes architectural decisions about storage, orchestration, and data models.

Drive applied AI research (LLM post-training, RL, agentic modeling) embedded with customers. Design experiments, prototype and scale training pipelines, run customer-facing evaluations, translate research into production via partnership with engineers, and build infrastructure for distributed training to deliver measurable business value.

As a Research Engineer/Scientist, advance large-scale language model technologies focusing on pre-training, post-training, and Reinforcement Learning, while collaborating with product managers and engineers to implement impactful AI solutions.

The Applied AI Engineer collaborates with clients to define AI strategies, identifies high-impact use cases, and builds production-ready AI systems, focusing on customer needs and delivering tangible business value.

The Embedded Product Manager will define AI transformation strategies, collaborate with engineers, and deliver impactful workflows by working with stakeholders to prioritize use cases and quantify business impacts.

The Research Engineer/Scientist will advance decision-making in critical industries using optimization and machine learning, collaborating with product managers and engineers.