Top Senior Backend Engineer Jobs in NYC, NY

Design and implement RESTful APIs, microservices, and distributed systems. Collaborate with teams to promote inclusivity and strong communication.

Design, build, and maintain globally distributed, fault-tolerant backend microservices and data pipelines. Integrate and refine Large Language Models, collaborate cross-functionally, ensure high-quality code, testing, monitoring, and mentor other engineers while owning features end-to-end.

Design, build, and scale foundational platform services to ingest, process, and route internet-scale security events. Develop fault-tolerant microservices, CI/CD and DevOps tooling for detection-as-code, evolve unified detection management, drive observability and policy features, mentor engineers, and collaborate cross-functionally to deliver real-time detection generation.

The role involves leading backend engineering efforts to build scalable distributed systems, enhance APIs, and troubleshoot production issues. Candidates should possess expertise in backend languages and cloud engineering principles.

The Senior Software Engineer will design, build, and maintain distributed backend services to enhance patient care workflows at Ro. Responsibilities include improving system performance and collaboration across various teams to ensure quality and compliance.

Develop and maintain high-scale backend services, troubleshoot issues, mentor engineers, and collaborate with product teams for feature implementation.

Build and operate a scalable integrations platform for data connectors ingesting petabytes/day. Design and develop distributed, multi-region systems in Go/Python, implement connectors (REST, WebSocket, file), ensure high availability, optimize performance/cost, support production incidents, and drive cross-team platform initiatives and SDK improvements.

As a Senior Backend Engineer, lead the engineering efforts to develop and maintain backend systems, drive best practices and architecture, and mentor other engineers.

Design, build, and improve scalable backend systems that collect hard-to-access OSINT; build pipelines and ETL for messy data; collaborate with product and mission teams; mentor engineers and ensure reliable data delivery for DoD workflows.

The Senior Backend Engineer will enhance data integration infrastructure, manage internal systems, and collaborate with teams to execute engineering tasks for growth initiatives.

As a Senior Software Engineer, you'll own backend systems, mentor team members, and collaborate with product and design to build user-focused solutions.

Nourish seeks a Senior Backend Engineer to design, build, and maintain backend services, collaborate with teams, and enhance engineering processes. Responsibilities include product development, codebase management, and driving improvements for scalability.

Design, build, test, and maintain backend services and APIs for an insurance platform. Integrate external services and data providers, improve system stability, performance, and scalability, participate in architecture discussions, mentor teammates, and support internal tooling and deployment practices.

Design and implement secure, scalable backend services for speech inference and audio processing. Optimize networking, transcoding, latency, memory, and distributed compute orchestration. Measure and improve system performance, debug complex networking/scheduling/HPC issues, customize services for customers, and partner with Product to deliver features end-to-end.

The Senior Backend Engineer will build scalable production services, monitor performance, and drive engineering initiatives from start to finish.

As a Senior Backend Engineer at Posh, you will design and scale backend services, manage AI infrastructure, and collaborate on integrating AI features into products.

The Senior Software Engineer will design, build, and maintain scalable backend services, enhance existing platform capabilities, and collaborate on technical projects across teams.

Design and build production-grade backend services and APIs for contact center systems using serverless patterns on AWS. Implement observability, data pipelines, AI-enabled automation, and migration tooling to modernize telephony workflows and improve agent and customer experiences.

Own major backend feature verticals (voice/chat, billing/payments, communications, service-provider workflows, auth/permissions). Drive architecture, design, implementation, testing, and production delivery while modeling data for access patterns and integrating payment processors and multi-channel communication.

As a Senior Backend Engineer at DuckDuckGo, you'll lead backend projects, mentor engineers, and develop AI-enhanced features for the company's privacy-centric product line.

The Senior Backend Engineer will develop the Payroll product, overseeing the entire development cycle from design to deployment, in a microservices architecture.

Design, build, and maintain scalable backend services and APIs for commerce workflows using Python/Django. Improve reliability, performance, and observability, operate AWS deployments, work with PostgreSQL and event-driven architectures (SNS/SQS), modernize legacy systems, and support CI/CD, testing, and production troubleshooting.

Design, build, and own core backend services powering AI agents and healthcare workflows, including orchestration of asynchronous, multi-step agentic workflows, high-stakes EHR integrations, platform abstractions, and HIPAA-compliant security and auth.

As a Senior Backend Engineer at Posh, you will design, build, and maintain scalable systems and APIs for AI features, focusing on Multi-Agent Systems and cloud infrastructure management.

As a Sr. Software Engineer, Backend, you will develop AI-powered solutions for clinical documentation and medical coding, collaborating with cross-functional teams to enhance SaaS products and deliver actionable insights for healthcare organizations.