Top Senior Software Engineer Jobs in NYC, NY

The Software Engineer will analyze user funnels, design experiments to boost adoption, and address user churn issues to enhance engagement.

The Senior Software Engineer will design and support Kubernetes infrastructure, develop applications in Go, and enhance platform reliability, performance, and observability in CoreWeave's AI-focused environment.

As a Backend Software Engineer, you will design and implement scalable services, focusing on API design and system architecture while mentoring team members.

As a Senior Full-Stack Software Engineer, you will develop and enhance software platforms, focusing on backend services, APIs, and front-end applications, while mentoring junior developers and collaborating with cross-functional teams.

As a Video Engineer at Whatnot, you'll enhance the platform's video services, develop seller tools, and implement innovative video strategies to improve user engagement and experience.

The role involves leading application performance improvements across multiple platforms, focusing on measurable metrics and driving engineering standards and workflow optimization, using both hands-on coding and strategic influence.

We are looking for a Senior .NET Software Engineer to take ownership of features and drive architectural decisions while building AI-powered EMR software.

The Staff Backend Engineer will lead technical direction across backend systems, write production code, improve scalability, and mentor engineers.

Design and implement distributed storage solutions for AI workloads, optimize performance, and collaborate with teams to enhance storage capabilities.

As a Staff Software Engineer, you'll design, build, and test Gusto's core platform services, mentor engineers, and collaborate with various teams to solve complex engineering problems.

The Senior Software Development Engineer will design, develop, and maintain software for Trading & Risk Management Systems, focusing on risk analytics, automation, and integration with market data vendors.

Lead the development and maintenance of integrations with health partners, manage data sources, and enhance oncology infrastructure, ensuring operational excellence and collaboration across teams.

The Senior Full Stack Software Engineer will design and develop scalable web applications, work across the stack, collaborate with teams, and integrate AI features while mentoring junior developers.

As a Backend Engineer at Kalshi, you will design algorithms for order matching, optimize data access, and lead integrations with external clients, contributing to a fast-growing financial market.

Lead development of financial transparency features that help patients make informed healthcare decisions. Own delivery of large, cross-team initiatives, break down ambiguous problems, drive alignment with product and partners, identify rollout risks, and contribute hands-on to scalable backend/fullstack systems while integrating generative AI tools.

The Principal Software Engineer, Senior Architect will lead architecture decisions modernizing Mastercard's Corporate Technology Solutions, focusing on data architecture, enterprise scale platforms, and ensuring technical excellence across teams.

The role involves leading projects as a full-stack engineer, focusing on SaaS products, enhancing user experiences, and building accessible software.

As a Fullstack Software Engineer, you'll design, develop, and maintain scalable frontend and backend systems while collaborating across teams.

Senior staff engineer responsible for system design, building scalable, durable API and AI infrastructure, ensuring performance, observability, security, and mentoring engineers. Collaborate across frontend and backend teams to deliver polished developer experiences and identify scaling bottlenecks before they impact production.

Design and implement frontend features for patient and provider web experiences at scale. Build realtime, accessible, high-performance interfaces, own application reliability and monitoring, contribute to architecture and technical roadmap, drive testing and observability best practices, collaborate cross-functionally, and participate in on-call rotations.

Lead frontend architecture and implementation for patient and provider web experiences at scale. Build accessible, performant realtime UIs, own end-to-end delivery, improve observability and reliability, contribute to technical roadmap, collaborate with PMs and designers, participate in on-call rotations, and drive engineering best practices.

Design, build, and maintain provider- and care-team-facing web interfaces for clinical and operational workflows. Own features end-to-end, drive frontend architecture, optimize client-side performance and accessibility, collaborate with product/design/data/clinical teams, instrument metrics, and participate in on-call rotations to ensure reliable production systems.

Design, build, and maintain provider-facing web interfaces for clinical workflows. Own end-to-end frontend architecture, performance, accessibility, testing, observability, and reliability. Collaborate with product, design, data, and clinical teams, contribute to technical roadmap, and participate in on-call rotations to ensure production reliability.

As a Senior Software Engineer, you'll design and build data models, APIs, and backend services for a complex datacenter infrastructure platform, while ensuring high performance and scalability.

The role involves leading the Observability Insights initiative at CoreWeave, focusing on developing APIs, agentic tools, and improving telemetry for AI systems. Candidates should possess significant experience in backend engineering and observability systems, especially for multi-tenant environments.