Top Backend Engineer Jobs in NYC, NY

Build and maintain large-scale, highly available backend systems for financial products. Write and review tested code, collaborate cross-functionally, lead end-to-end technical execution, guide architectural decisions, drive strategic engineering initiatives, mentor junior engineers, and support system design, debugging, testing, releases, and operational monitoring.

Design, develop, and maintain scalable backend systems and shared services. Write tested code, review peers’ work, provide technical leadership, drive organization-wide engineering initiatives, and improve developer productivity and system reliability through automation and best practices. The role requires building highly available cloud production systems from the ground up, with emphasis on infrastructure, AWS architecture, debugging, and scalable system design.

Lead architecture and end-to-end delivery of large-scale backend systems. Design resilient, reliable, scalable services; write and review well-tested code; guide complex technical decisions; mentor engineers; and drive strategic initiatives across engineering teams. The role focuses on cloud architecture, distributed systems, performance, technical excellence, and building new systems for crypto and DeFi products.

Lead architecture and hands-on development of ResortPass’s booking platform and versioned external APIs. Build reliable pricing, availability, holds, reservations, cancellations, integrations, and reconciliation workflows. Improve transactional correctness, concurrency, resilience, observability, and safe migration of the existing Rails system. Mentor backend engineers, guide technical decisions, and collaborate with Product, Partnerships, and hotel operations to launch new partners and experience categories.

Develop and operate backend systems supporting post-transaction processing for Affirm Card. Break down projects, write tested and extensible code, collaborate with product and engineering teams, monitor system health, troubleshoot issues, participate in on-call support, and contribute to code reviews and team development.

The Back-end Engineer will develop and maintain services and APIs, design data models, and contribute to system stability, collaborating with other engineers and product managers.

Lead a team modernizing a core Aladdin analytics and reporting service using scalable, API-first Java solutions. Design backend systems, data models, APIs, and integrations; collaborate with engineering, product, business, and clients; and oversee production delivery. Mentor junior engineers, apply AI-native development tools, and solve large-scale data challenges involving client-server systems, inter-process communication, relational and NoSQL databases, distributed caching, and high-performance services.

Architect and operate large-scale data pipelines that power startup, people, and investment intelligence. Own data quality, discover new data sources, and advance extraction and reconciliation through LLM-powered agentic workflows and evaluations. Work across backend systems, databases, search indices, and GraphQL APIs to deliver customer-facing data products and features, collaborating with GTM, Product, and Design.

Design and implement scalable backend systems for advisor payments, ensuring accuracy and performance, while collaborating with product teams to enhance user experience.

Build and scale backend systems for an enterprise AI platform. Responsibilities include architecting REST and gRPC APIs, developing distributed infrastructure for crawling, ranking, and retrieval, writing secure and tested code, and improving reliability and engineering velocity. The role requires a strong computer science foundation, proficiency in a strongly typed language, and at least four years of experience building distributed systems.

Develop and maintain scalable back-end products for the Secondary Market team. Responsibilities include building server-side services, integrating databases, managing data flows, collaborating with business and engineering teams, participating in code reviews, debugging defects, optimizing performance, and documenting technical decisions. The role involves using Python, Java, C#, or Node.js and supporting applications powered by data, AI, and advanced analytics.

Design, build, and operate backend services for Bestow’s insurance platform using Python, Go, Java, and PostgreSQL. Collaborate on technical decisions, integrations, carrier onboarding, and scalable platform capabilities. Mentor engineers through reviews and pairing, improve production reliability and observability, participate in on-call support, and communicate technical decisions in a remote-first environment. Use agentic AI coding tools daily and help establish effective AI-assisted development practices.

Provides cross-team technical leadership for complex backend initiatives, modular architecture, monolith modernization, API and platform standards, production operations, and AI-assisted engineering adoption. Designs shared patterns for services, data, eventing, security, testing, observability, deployment, and reliability. Partners with Product and Engineering leadership, mentors engineers, participates in incident response, and drives technical strategy without formal authority.

Build, test, ship, and operate production backend features with minimal guidance. Design APIs, background jobs, integrations, data models, migrations, and bounded services while maintaining security, performance, observability, and reliability. Review code, improve automated testing, investigate production issues, address technical debt, participate in operational support, and collaborate asynchronously with product, frontend, infrastructure, and security teams. Use AI coding tools responsibly by validating and correcting generated output.

Build enterprise-grade authentication, authorization, and identity features across the full stack. Design and implement RBAC, provisioning (SCIM), SSO/OAuth integrations, secure public APIs, and admin workflows for auditing and compliance. Own end-to-end product changes, collaborate on architecture, and mentor engineers to deliver scalable, reliable systems for enterprise customers.

You will develop and maintain backend systems for a platform analyzing in-person sales conversations while collaborating with product and design teams, ensuring the technical excellence of features.

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.

Owns delivery of backend money movement and card ledger systems, leading engineers through complex problems and ambiguity. Collaborates with product, design, analytics, and engineering stakeholders; defines scalable technical solutions; supports system availability, monitoring, on-call operations, code quality, and engineering standards. The role also includes mentoring and developing team talent while building highly available distributed systems for Affirm’s financial products.

Leads architecture and hands-on development of scalable backend systems and APIs supporting real-time applications. Owns the engineering lifecycle, writes high-performance code, establishes testing and reliability practices, resolves production issues, guides technical roadmaps, collaborates cross-functionally, and mentors engineers. The role requires expertise in object-oriented backend development, distributed cloud systems, automated testing, system monitoring, and technical leadership.

As a Software Engineer on the Compute team, you will build and optimize systems for data processing, SQL querying, and improve the performance of code execution. You will tackle complex engineering challenges spanning backend data systems to frontend applications, ensuring efficiency and usability.

Build and own low-latency, highly scalable backend APIs and data systems for transaction enrichment. Design infrastructure, implement data pipelines, debug production issues, and collaborate cross-functionally to deliver reliable products processing billions of transactions.

The Backend Product Engineer will enhance the Radar platform, manage API traffic, engage with customers, and work across various backend technologies to drive product success.

Build and operate backend services, control planes, and automation for Lightning AI’s managed Kubernetes and Slurm infrastructure. Develop distributed systems for cluster provisioning, lifecycle management, scheduling, observability, reliability, and scalability across large-scale GPU environments. Diagnose complex production issues and collaborate with infrastructure, AI, and platform engineering teams. Contribute to architecture, technical design, mentoring, engineering practices, and on-call operations.

Develop and scale Lightning AI’s backend platform using Go, spanning APIs, infrastructure, billing, security, and integrations. Own features end to end, design reliable and scalable systems, improve architecture and performance, maintain software quality and continuous delivery, reduce technical debt, and mentor engineers. Collaborate with engineering, product, and design teams in a fast-changing SaaS environment.

Architect and build highly reliable, scalable backend systems powering Uber One memberships across UberEats and UberX. The role involves platform evolution, microservices and API design, technical strategy, cross-functional collaboration, architectural decision-making, production deployment, monitoring, incident management, and engineering excellence. The engineer will lead complex technical initiatives and develop systems serving millions of global users.