Top Senior Backend Engineer Jobs in NYC, NY

Design, implement, and own backend workflows, APIs, background processing, and stateful systems. Build reliable, predictable services integrating AI and clinical systems (FHIR). Debug production issues, collaborate on system design, and maintain operational correctness.

Design, build, and operate high-throughput, low-latency backend platform services and shared infrastructure (event pipelines, caching, rate-limiting, job execution). Drive multi-region fault-tolerant designs, observability and SLOs, lead incident response, mentor engineers, define platform APIs and standards, and produce design docs and runbooks to raise platform maturity across teams.

Design and build core backend systems and APIs for an AI-native ERP. Launch production-ready features end-to-end (CI/CD, deployment), manage complex accounting business logic, data migrations, scaling, and third-party integrations. Own architecture, testing, monitoring, and post-release care.

The Senior Lead Software Engineer will lead diverse tech projects, mentor developers, and deliver cloud-based solutions using various programming languages and technologies.

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.

Design, build, and own backend services for prediction markets across market lifecycle: creation, trading, oracle resolution, settlement, and payouts. Build low-latency, high-throughput microservices and event-driven systems, drive reliability via SLOs and observability, lead incident response, set technical standards, and mentor engineers while partnering cross-functionally to deliver product and compliance-aligned roadmaps.

Drive development of backend services and APIs for the Stellar ecosystem, optimize performance and maintainability, and engage in architecture discussions. Collaborate cross-functionally to meet user needs and contribute to open-source efforts.

As Principal Engineer, you will lead the development of the BrandVNO platform, enhancing SDK for innovative telecom solutions and ensuring system scalability.

Design, build, and deploy backend services for an AI-powered emergency call triage platform. Own features end-to-end, collaborate cross-functionally, and work with LLMs, voice AI, and modern AI infrastructure to improve emergency response workflows. Participate in architecture, technical design, and customer-facing discussions.

Develop Django APIs and backend services for a decentralized energy platform, focusing on scalability, performance, and collaboration with cross-functional teams.

You will design, build, and maintain backend systems, optimize APIs, manage databases, and lead feature development in a scalable environment.

As a Senior Backend Engineer, you will build and optimize backend services and APIs, improve CI/CD workflows, and mentor teammates while collaborating with a cross-functional team.

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.

Design and scale backend systems, manage core services and APIs, collaborate with cross-functional teams, and enhance system reliability and performance.

The Senior Backend Engineer will design, build, and scale backend services, architect data processing pipelines, and mentor engineers in a rapidly growing AI firm.

As a Senior Backend Engineer, you'll design and build RESTful APIs, microservices on Kubernetes, and distributed systems in Go, while collaborating across various teams.

As a Tech Lead, you will spearhead the backend tech vision, mentor junior engineers, collaborate with teams, and improve Java Spring Microservices.

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.

Lead backend and full-stack work on the Payments team, building multi-gateway integrations (Stripe, PayPal), payment APIs, and customer payment UIs. Ensure secure, compliant (PCI-DSS) payment flows, reliability, observability, and scalability across AWS/Kubernetes microservices. Partner cross-functionally to design architecture, implement settlement/reconciliation, and maintain high availability.

Build, ship, and operate backend systems and data infrastructure; develop robust business logic for health data; prototype and productionize experiments to improve AI/ML models; establish scalability, security, testing, and MLOps best practices; and iterate on engineering process and culture.

As a Senior Backend Engineer, you will build and optimize the infrastructure for AI agents, improving reliability and performance while making technical decisions and contributing to code quality.

The Backend Software Engineer will develop data ingestion pipelines, implement observability tools, and provide technical support while improving team collaboration.