Top Tech Jobs & Startup Jobs in NYC, NY

The Payroll Customer Success Manager serves as the main contact for customers, supporting onboarding, ensuring payroll accuracy, resolving issues, and building trust through proactive communication.

Design end-to-end technical architecture for an integrated supply-chain e-commerce platform (MES→WMS→OMS→Payments→Invoices). Define modular service architecture, API contracts, tenant isolation (Postgres RLS), deployment IaC (Terraform, Docker, Traefik), observability (Prometheus/Grafana/OpenTelemetry), security (JWT, Vault), and integration of production AI agent frameworks (LangChain/LlamaIndex/AutoGen). Mentor teams and deliver compliant, scalable technical blueprints with target SLOs.

Lead and implement full-stack architectural foundations across frontend, backend, and AI interfaces. Define API-first patterns, select standardized libraries and monorepo practices, produce system diagrams and documentation, enforce code quality and testing, and mentor developers to improve performance, security, and maintainability.

Perform load, stress, and endurance testing across e-commerce storefronts, internal SaaS tools, and AI agent services. Design test strategies, execute tests with tools like JMeter/Gatling, analyze observability metrics, identify bottlenecks in Node.js/NestJS, PostgreSQL, and Redis, and integrate performance tests into CI/CD while collaborating with SRE and backend teams.

Design, build, and maintain scalable data pipelines, data lakes, and databases; ingest and map customer financial datasets; monitor pipeline reliability; translate business requirements into data flows and analytical insights to ensure high-quality, usable data.

Owns functional software definition for warehouse execution projects, translating presales scope into detailed specifications, estimates, integration designs, and delivered software. Leads customer workshops, onsite discovery, Scrum ceremonies, backlog management, and collaboration with development and controls teams. Defines WMS/ERP, third-party subsystem, IT, network, and controls integrations while maintaining alignment between specifications and implementation. Provides roadmap input and supports project delivery and commissioning at customer sites, with travel up to 50%.

Own the technical aspects of enterprise airline deals from qualification through deployment and expansion. Design integration and cloud architectures, lead demos and proofs of concept, respond to RFPs and security questionnaires, review technical contracts, and ensure customer commitments align with engineering capabilities. Build reusable technical assets, support adoption, and communicate customer requirements to product and engineering teams.

Design and scale a feature flagging and A/B testing platform, including high-throughput event ingestion, warehouse-native analytics, real-time feature flag delivery, multi-database SQL support, and distributed systems infrastructure. The role involves full-stack development, architecture, performance optimization, reliability engineering, and technical product influence within a remote startup team.

Work directly with customers to design, deploy, and integrate end-to-end AI evaluation pipelines. Curate data, define annotation schemes, set up LLM-based judges, run initial experiments, produce actionable results, and translate technical systems into practical workflows for users.

Lead Recruiter sources, screens, and hires healthcare professionals using job boards, social media, and ATS. Partners with hiring managers, schedules interviews, negotiates offers, manages onboarding, maintains candidate records, and represents the company at recruitment events to expand the talent pipeline.

Volunteer Principal Full Stack Engineer to lead and contribute across frontend and backend (React/React Native, Node.js, MongoDB). Own feature development, mentor engineers, collaborate with product/design, ship scalable code, and support CI processes. Must commit 4+ hours weekly and attend a weekly standup; first task includes launching a fundraising campaign.

Provide pro-bono legal counsel for nonprofit formation and compliance: advise on entity choice, draft formation and governing documents to secure tax-exempt status, file formation and registration documents, protect name and registered agent decisions, obtain permits/registrations, and support an initial fundraising campaign.

Volunteer generalist supporting nonprofit formation, day-to-day operations, tracking pro bono matters, social media and marketing content, IT and finance support, research, and special projects. Requires proactive, independent work and weekly standups.

Sell Needletails solutions to dental offices across the U.S.: develop strategic sales plans, generate demand, build client relationships, coordinate with internal teams, and represent the company at industry events.

Design, build, and maintain scalable full-stack applications; collaborate with cross-functional teams; integrate AI and agentic systems to enhance product features; ensure performance, fix bugs, and resolve bottlenecks.

Lead and mentor a team of engineers while contributing hands-on to complex features. Define architecture, drive development best practices, conduct code reviews, coordinate cross-functional requirements, and ensure timely delivery of high-quality ecommerce marketplace software.