Top Tech Jobs & Startup Jobs in NYC, NY

Build and enhance a Ruby on Rails SaaS application across the full stack. Responsibilities include directing AI coding agents, writing specifications and architecture documentation, applying TDD and refactoring, developing LLM-facing APIs and MCP servers, improving Turbo/Stimulus interfaces, troubleshooting PostgreSQL and ClickHouse performance, extending internal tooling, experimenting with rapid solutions, and providing operational support.

Develop and improve Jane Street’s ML compiler stack for high-throughput training and low-latency inference. Responsibilities may span compiler optimization, graph compilation, GPU kernel programming, frontend design, ML training and inference systems, debugging, formal methods, and programming-language or DSL development. The role involves evaluating existing technologies and building custom solutions to improve hardware utilization and accelerate model development and deployment.

Build and scale Statusphere’s AI-powered creator-brand matchmaking platform. Responsibilities include designing matching and recommendation pipelines, developing fullstack web services, maintaining CI/CD, conducting code reviews, investigating performance incidents, and leading features through design, deployment, and maintenance. The role also involves mentoring engineers, improving development processes, communicating technical progress, and collaborating on product and engineering strategy in a fully remote startup environment.

Generates qualified leads, builds executive relationships, closes complex distributed-generation and energy-conservation projects, and develops customer-specific energy infrastructure solutions. The role requires consultative selling, financial and technical fluency, deal structuring, proposal development, negotiation, and collaboration with engineering and project development teams. Solutions include solar, generators, cogeneration, battery storage, microgrids, efficiency upgrades, and HVAC systems. The position is remote or hybrid in the Eastern US with 25–50% travel.

Manage B2B client relationships from implementation through ongoing optimization. Launch customers, configure the platform, troubleshoot issues, monitor performance metrics, document bugs and feedback, and collaborate with Product and Engineering. Serve as a trusted product expert while helping clients achieve measurable value. The role requires strong organization, problem-solving, technical curiosity, data fluency, and the ability to manage multiple priorities in an in-office environment.

Supports fashion public relations activities including sample trafficking, influencer and VIP gifting, media and social monitoring, trend and contact research, press reporting, database maintenance, showroom operations, fittings, event logistics, and brand activations. The internship provides hands-on experience in fashion PR, influencer marketing, communications, and product placement.

Deliver recurring and ad hoc commercial analytics, client reporting, performance-guarantee calculations, dashboards, and value measurement. Define and govern metrics, validate data, improve documentation and workflows, and automate repeatable processes. Partner with Client Success, Commercial, Finance, Product, and Analytics teams to translate complex questions into actionable insights, client-ready narratives, and recommendations that strengthen client relationships and inform business strategy.

Develop and execute integrated B2B marketing campaigns targeting provider, payer, and manufacturer audiences. Partner with sales and account teams on demand generation, account-based initiatives, sales enablement, events, email outreach, CRM, and marketing automation. Track campaign performance, optimize programs using data, strengthen marketing-sales processes, and build scalable tools and resources. The role requires managing multiple initiatives from strategy through execution and may involve travel to team meetings and industry events.

Supports the FP&A team with monthly sales and P&L reporting, budgeting, financial analysis, data extraction, trend identification, and business insights. The intern will help maintain reports and processes, improve financial performance, support E-Commerce, CRM, and media finance activities, and complete ad hoc projects. The role requires strong Excel skills, analytical ability, communication, organization, and availability for 30–35 hours weekly for at least six months.

Develops new business opportunities across Long Island, establishes corporate accounts, manages client relationships, supports customer app and order issues, analyzes customer and order behavior, and achieves individual and team sales targets. The role is primarily field-based four days per week, with one day in the New York City office for collaboration and strategy meetings.