Top Tech Jobs & Startup Jobs in NYC, NY

Build and optimize a high-performance React Native mobile app for crypto SocialFi users. Integrate APIs, real-time data, and decentralized technologies, solve wallet and smart-contract challenges, ship features rapidly, and collaborate cross-functionally to maintain a scalable, modular codebase.

Provide high-touch technical support and integration assistance for institutional clients using a low-latency distributed messaging system. Troubleshoot production incidents, monitor alerts, manage incident mobilization across engineering teams, maintain UAT and production configurations, and drive continuous service improvements while acting as a trusted client advisor.

Lead end-to-end full‑stack development across TypeScript/React frontends and Node.js backends. Design and version APIs, scale backend infrastructure (Docker, Kubernetes, Prometheus, Grafana), collaborate with product and external partners, ensure high code quality and automated testing, and own feature lifecycle from prototype to production.

Design and build core payment infrastructure end-to-end: high-performance transaction processing, ledgers, reconciliation, settlement, and on-call support. Own system architecture for distributed, event-driven systems ensuring strict consistency, idempotency, fault tolerance, security, and continuous delivery in a high-throughput financial environment.

Design and analyze A/B tests, perform deep-dive analyses to identify product opportunities, build dashboards and predictive models, partner with product and engineering to implement solutions, and establish analytical best practices across the organization.

Lead ownership of core backend systems for ultra-low-latency, high-throughput distributed services. Drive architecture, resolve performance and scaling bottlenecks, mentor engineers, and operate critical infrastructure under extreme concurrency and load.

Design, build, and operate large-scale, fault-tolerant web crawlers and data pipelines that collect, clean, deduplicate, and normalize web-scale datasets (terabyte to petabyte). Navigate anti-bot defenses and dynamic JS sites, optimize crawl performance and cost, and collaborate with research teams to produce ML-ready datasets.

Lead architecture and implementation of high-scale, fault-tolerant backend systems. Write production code, drive multi-service initiatives across storage, compute, APIs, and blockchain, and establish standards for observability, reliability, and performance. Mentor senior engineers, act as technical lead during incidents, and improve developer velocity via tooling and CI/CD enhancements.

Design, deploy, and operate high-performance compute, storage, and networking infrastructure. Build automation, CI/CD pipelines, container deployments, monitoring, and indexing/explorer services. Optimize system performance, provision time‑series and key‑value databases, and ensure reliable, low-latency operation for real-time crypto trading systems.

Lead U.S. financial services go-to-market: own full sales lifecycle, build and qualify pipeline, engage C-level stakeholders, position distributed ledger and tokenization solutions, collaborate with product and engineering, and scale repeatable enterprise sales motions.