Top Backend Engineer Jobs in NYC, NY

Develop and maintain backend services and APIs for LabArchives ELN, inventory, and scheduler products. Build primarily with Node.js while contributing to Ruby on Rails code, database development, testing automation, security reviews, and performance evaluations. Collaborate with product, operations, support, and frontend teams to plan, develop, test, and release scalable features. The role requires strong backend and database expertise, API design knowledge, and cross-functional communication.

Leads architecture, development, deployment, and operations for Python backend services supporting internal penetration testing. Designs scalable ETL pipelines, distributed workflows, relational data models, SQL queries, GraphQL APIs, and graph-based attack-path data systems. Owns reliability, observability, performance, and production operations while coordinating cross-team initiatives. Provides technical direction, writes architecture documentation, mentors engineers, and partners with frontend, product, data, and attack teams to deliver customer-facing security results.

Lead fraud decisioning engineering initiatives by architecting, building, launching, and maintaining complex backend systems. Drive cross-functional projects from definition through monitoring, write high-quality and resilient code, review technical work, mentor engineers, collaborate with Product, ML, Analytics, and Business teams, and contribute to hiring and interview design.

Develop backend tools and systems that improve batch development, testing, workflow efficiency, and reliability. Collaborate with product, infrastructure, design, and analytics teams; break projects into deliverable phases; build scalable, well-tested code; monitor metrics; support system availability and on-call operations; debug code; conduct reviews; and contribute to engineering growth and hiring activities.

Design, deploy, and optimize Philo’s distributed video streaming infrastructure, including ingest, transcoding, packaging, delivery, RESTful services, analytics pipelines, DRM, and ad insertion. Improve platform reliability, performance, latency, security, video quality, and cost efficiency. Collaborate with content partners and internal video, advertising, client, and data teams while supporting streaming quality across new platforms. The role also involves architectural ownership, cloud operations, and mentoring.

Build and operate backend APIs, services, integrations, and cloud infrastructure powering patient applications, clinical workflows, and AI agents. Integrate electronic medical records and healthcare systems, ensure security and reliability for sensitive patient data, and collaborate with product, clinical, and AI teams. The role includes architectural ownership, production operations, tooling improvements, and hiring or mentoring engineers in an early-stage startup.

Develop and improve core software services supporting customer intake, application screening, and information dissemination. Design distributed, microservice-based systems; identify bottlenecks; improve reliability, scalability, and business logic; and contribute to modernization and architectural decisions. Work independently across the stack, communicate technical trade-offs, mentor junior developers, and use AI and automation tools to improve engineering outcomes.

Design and maintain scalable backend systems in a distributed microservices architecture. Build RESTful APIs, integrate third-party vendors, optimize SQL and NoSQL databases, and implement messaging, observability, CI/CD, and cloud infrastructure practices. Lead engineering initiatives from requirements through delivery, contribute to technical strategy, document systems, and improve reliability, performance, and scalability across user-facing applications.

Build and evolve scalable backend systems and APIs for a large SaaS platform. Partner with Product, Design, and QA from ideation through deployment, contribute to microservices architecture, improve testing and observability, identify operational risks, and mentor teammates. The role emphasizes reliable, maintainable solutions, strong collaboration, architectural decision-making, and continuous improvement.

Design and scale asynchronous Python backend systems, including REST/WebSocket APIs, multi-agent LLM workflows, provider-agnostic integrations, and RAG pipelines. Own relational data models, observability, performance, CI/CD, and production deployment. Establish AI governance covering code review, provenance, licensing, security, compliance, and customer data handling. Drive ideas from concept through production while owning architecture and outcomes.

Lead the architecture and delivery of Patreon's large-scale live video platform, covering ingest, transcoding, packaging, delivery, playback, backend services, and APIs. Improve latency, quality, reliability, observability, and scalability across web and mobile. Evaluate video vendors, operate cloud-native systems, manage incidents and capacity planning, shape the technical roadmap, and mentor engineers.

Develop and enhance backend systems, services, APIs, and core product features. Improve codebase maintainability, reliability, and scalability while operating mission-critical systems in production. Participate in on-call incident resolution, automated monitoring and instrumentation, recruiting, interviewing, and mentoring. The role emphasizes distributed systems, automated testing, continuous integration, and measurable business impact.

Lead architecture, development, and operation of globally scaled payments and billing systems. Own subscription billing, payment providers, invoicing, reconciliation, security, compliance, reliability, and modernization. Use and advance AI-agent workflows for engineering, incident response, testing, and anomaly detection while enforcing strict human review and PCI safeguards. Mentor engineers, guide technical strategy, and collaborate with Product, Finance, Risk, Platform, and Analytics.

Leads architecture, development, and operation of Python-based AWS backend and IoT cloud services. Designs Lambda microservices, REST APIs, event-driven workflows, telemetry pipelines, data models, and AWS IoT Core integrations. Provides hands-on technical leadership through coding, design and code reviews, mentoring, planning, and standards development. Ensures security, scalability, observability, CI/CD, production readiness, incident response, and cross-functional alignment across firmware, mobile, QA, DevOps, Product, and Security teams.

Design, build, operate, and support backend services powering an enterprise AI platform. Responsibilities include developing APIs, gateways, orchestration, tenancy, entitlements, metering, integrations, governed data access, and distributed platform capabilities. The engineer owns services across design, implementation, testing, deployment, monitoring, reliability, and support while addressing failure modes, consistency, idempotency, and scalability.

Own Corvus’s backend architecture and data layer, including a canonical data model and knowledge graph for manufacturer, facility, product, and people data. Build resilient systems with queues, retries, idempotency, and observability while enabling agent-powered research workflows. Work directly with founders and customers to design, ship, scale, and monitor production systems. The role requires strong relational database expertise, entity resolution experience, pragmatic technical decision-making, and in-person work in NYC five days per week.

Develop and maintain Salesforce Commerce Cloud ecommerce websites, integrations, feeds, and platform features. Design architecture, troubleshoot performance and caching, manage domains and repositories, ensure platform compliance, mitigate project risks, and optimize site infrastructure. Collaborate with agencies and cross-functional teams while developing and mentoring junior engineers.

Develop scalable Django back-end applications and RESTful APIs; design databases, schemas, ER diagrams, data flows, authentication, and authorization systems. Configure cloud infrastructure and production deployments, optimize PostgreSQL performance, write automated tests, and manage Linux servers with Bash, SSH, and shell scripting. Collaborate with cross-functional teams, document systems, and contribute to scalable architecture. This is a remote, unpaid internship requiring at least 30 hours weekly.

Own backend features from inception through production, develop and improve Kotlin services, write maintainable and well-tested code, and design scalable, reliable distributed systems within a small cross-functional team.

Design, build, and maintain scalable microservices in Go using gRPC and Protocol Buffers; deploy on GCP (Compute Engine, Cloud Run, Cloud Storage); implement API security (OAuth2) and credential management; containerize with Docker/Kubernetes; collaborate with MLOps and frontend teams; mentor junior developers; troubleshoot production issues and document API contracts.

Build and scale backend infrastructure for AI-driven freight finance workflows, including document processing, APIs, data pipelines, audit engines, integrations, observability, and performance monitoring. Collaborate with AI/ML teams to productionize model outputs, integrate freight and financial systems, improve engineering practices, and make frontend updates as needed in a remote-first startup environment.

Set technical direction for enterprise platform services supporting licensing, entitlements, account administration, onboarding, provisioning, notifications, and partner workflows. Design secure, scalable multi-tenant architectures and lead cross-team technical initiatives from ambiguity to implementation. Improve reliability through observability, testing, safe deployments, incident learning, and operational documentation. Contribute hands-on through design and code reviews, mentor senior engineers, and influence engineering, product, and business stakeholders.

Build and operate backend services and APIs for secure, multi-tenant administration workflows, including user access, account hierarchies, settings, roles, access controls, and audit logs. Own features from design through production support, applying strong data modeling, authorization, testing, observability, and reliability practices. Collaborate with Product and engineering teams, investigate production issues, document systems, and mentor teammates.

Design and implement backend APIs, microservices, and checkout platform components for Affirm’s financial products. Own system health, improve performance and reliability, collaborate across engineering teams, and contribute to technical standards, tooling, and processes. The role requires developing, testing, and shipping high-quality software at scale while making customer-centric technical decisions.

Architect and build high-scale backend systems for payments, fraud detection, compliance, and user management. Lead cross-domain architecture decisions, optimize distributed microservices for reliability and performance, mentor engineers, establish engineering standards, and collaborate with product and compliance teams. The role requires expertise in Python, databases, cloud infrastructure, distributed systems, event-driven architectures, system design, and financial integrations.