Top Backend Engineer Jobs in NYC, NY

Design, build, test and operate cloud-native back-end microservices using Java. Ensure secure, scalable, reliable systems, optimize data access and performance, support production lifecycle and incident management.

Build and launch backend identity decisioning systems that validate consumer identity and satisfy KYC regulations. Collaborate with Product, Compliance, Auth, Fraud, Analytics, and engineering teams; decompose projects, write tested and extensible code, monitor system metrics, support availability and on-call operations, debug code, participate in reviews, and contribute to technical decisions and team development.

Build scalable backend services and infrastructure for mobile and web products. Design secure RESTful APIs, architect high-performance systems, apply engineering best practices, estimate and track Agile tasks, mentor teammates, collaborate with clients and engineers, and take ownership of technical solutions.

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.

Lead the technical direction and architecture of the Foundations platform team, owning authentication, authorization, SSO, secrets management, tenancy, and core platform services. Design APIs, drive services through launch, make technical decisions, establish engineering standards, and mentor engineers without formal management authority. Partner with engineering and product leaders to align execution with priorities.

Build reusable backend platforms and developer-facing tooling for performance testing, analysis, reporting, and AI-assisted engineering workflows. Enable service teams to independently incorporate performance testing into development and CI workflows through self-service capabilities, documentation, templates, diagnostics, and guidance. Partner with engineering teams, influence adoption, generalize solutions, and provide expertise on complex performance challenges.

Design and implement backend services, modernize legacy systems into microservices, ensure strong testing and production observability, and collaborate with Product and Engineering teams. The role requires independent project ownership, strong system design, AI-assisted development using tools such as Claude or Cursor, effective communication with nontechnical stakeholders, and adaptability in an ambiguous, fast-changing environment.

Leads cross-team backend initiatives and technical architecture for GitLab’s Core DevOps platform. Responsibilities include modernizing a monolith, establishing service, API, data, security, testing, and observability standards, guiding Go and Kubernetes practices, supporting Rust adoption, participating in incident response, mentoring engineers, reducing technical debt, and advancing AI-assisted engineering workflows.

Design and build high-performance Java/Spring Boot backend microservices and event-driven systems for global post-trade accounting. Integrate Snowflake and SQL Server, use Kafka for streaming, and Redis for low-latency caching. Participate in design, code reviews, testing, performance tuning, and cross-functional collaboration; occasionally support light UI updates and automation tasks. Focus on reliability, maintainability, and production readiness.

Design, implement, and maintain scalable, secure, high-performance backend systems and public-facing APIs. Collaborate with Product and Data Science teams, lead initiatives improving efficiency and system performance, and support customer satisfaction. Work may involve distributed systems, pricing engines, identity management, authentication, authorization, API versioning, deprecation, and rate limiting.

Designs, builds, and scales backend services and integrations for payments, billing, identity, and partner connectivity. Sets technical vision and architecture for distributed systems, leads cross-team delivery, manages production rollouts, builds fault-tolerant services and data pipelines, and mentors engineers. The role partners with product, design, and engineering teams to deliver frequent, reliable improvements for Flex’s rent payment platform.

Design, build, and scale backend services and integrations for payment, billing, identity, and partner systems. Own API scoping, design, implementation, deployment, and production operations with minimal oversight. Build fault-tolerant systems, data pipelines, and scalable architectures while collaborating with product, design, engineering, and external partners. Contribute to reliability monitoring, observability, automation, technical standards, and mentoring in a distributed team.

Build and scale backend data platforms and services for real-time loan origination and financial reporting. Lead quarterly delivery, guide engineers, define technical plans, collaborate with product and design partners, improve reliability and operational practices, monitor service metrics, participate in on-call support, uphold engineering quality standards, and mentor team members. The role requires developing highly available distributed systems and scalable data pipelines using technologies such as Python, Kotlin, AWS, MySQL, Kubernetes, Spark, and Airflow.

Build and operate Go-based automation for PostgreSQL provisioning, configuration, upgrades, failover, scaling, and decommissioning at GitLab.com scale. Develop a PostgreSQL-as-a-service platform, integrate cloud infrastructure and infrastructure-as-code tooling, improve database performance and reliability, and create safe upgrade automation. The role includes production ownership, architecture leadership, code reviews, documentation, cross-team collaboration, mentorship, and using AI agents in engineering workflows.

Design, develop, launch, and maintain scalable backend systems and APIs used by merchant and partner integrations. Collaborate with engineers and stakeholders, balance speed with system quality, debug code, conduct code reviews, and write tested, extensible software. The role requires experience with distributed systems, Python or Kotlin, AWS, MySQL, and Kubernetes, along with strong communication and ownership of professional growth.

Develop and integrate scalable backend software for real-time bidding and digital advertising systems. Build RESTful APIs with Python, Django, and PHP; manage Kubernetes/EKS and AWS production deployments; participate across the SDLC, including requirements analysis, testing, deployment, and integration. Collaborate cross-functionally, troubleshoot complex issues, support system reliability, conduct code reviews, mentor engineers, and promote engineering best practices. The role is onsite in New York four days per week and may require nights or weekends.

Design and scale highly available backend microservices processing global travel and expense transactions. Lead cross-functional technical initiatives, establish architecture and engineering standards, optimize APIs and event-driven systems, and ensure reliability through observability and production debugging. Mentor engineers, lead architecture reviews, and balance product delivery with long-term scalability and technical health.

Build and operate backend systems powering Citizen’s real-time safety pipeline, live video, AI-assisted incident detection, enterprise APIs, and internal tools. Own services handling high-scale event processing, latency, correctness, observability, infrastructure cost, and production reliability. Use Go, Python, Kubernetes, and Google Cloud while extending agent-based development and operations workflows. Participate in 24/7 rotational on-call, drive initiatives, collaborate with mobile, ML, data, and operations teams, and work onsite in New York City.

Design, build, and operate backend infrastructure for an AI-driven knowledge platform. Responsibilities include knowledge graph hydration, ontology-based mapping, SPARQL and SQL optimization, data ingestion and ETL, relational and vector database management, REST API development, cloud deployment, containerization, monitoring, and data security. The role collaborates with ontologists, architects, and application teams while supporting enterprise-scale graph and semantic technology implementations.

Lead architecture and hands-on development of backend and API platforms supporting ecommerce, loyalty, clienteling, and customer personalization. Build scalable Node.js and TypeScript services, integrations, microservices, and event-driven systems across commerce, payments, fulfillment, CRM, analytics, and digital experience platforms. Own API governance, security, observability, DevOps automation, and cloud infrastructure while mentoring engineers and shaping technical standards and roadmaps.

Lead the architecture, technical strategy, and implementation of Squarespace’s large-scale Communications Platform for email, push, and in-product notifications. Provide hands-on Java development, drive modernization and reliability improvements, mentor engineers, conduct design and code reviews, identify systemic risks, and influence cross-team architecture decisions while balancing delivery with long-term platform health.

Lead development of scalable backend systems, enterprise API integrations, data migrations, and cloud-native applications for a health technology platform. Build Python services using Flask and AWS serverless technologies, design PostgreSQL-backed systems, ensure security and observability, conduct code reviews, and provide technical leadership. Collaborate with product teams, clients, and stakeholders to gather requirements, make architectural decisions, and deliver complex integrations and software projects.

Build and enhance Judi Health’s scalable healthcare platform using Python, AWS, PostgreSQL, and infrastructure-as-code technologies. Lead features from design through delivery, collaborate with product, design, QA, and engineering teams, provide technical guidance, and serve as a subject matter expert. Work in an Agile/Scrum environment while writing quality code, unit tests, and supporting cross-functional stakeholders.

Design, build, and maintain high-availability backend services and RESTful APIs using Python/Django and PHP. Own production deployments on Kubernetes/EKS and AWS, mentor junior engineers, produce technical documentation, define architecture, track performance metrics, and collaborate with stakeholders to deliver scalable ad-tech platform features.

Designs and scales enterprise backend services, data platforms, pipelines, and distributed processing solutions. Leads architecture, graph-based data initiatives, Snowflake implementations, engineering standards, code reviews, CI/CD, testing, and AI-assisted development. Partners with technical and business stakeholders, ensures security and regulatory compliance, optimizes platform performance, and mentors engineers.