Top Software Engineer Jobs in New York City, NY

Build and own customer-facing applications, backend services, APIs, integrations, background jobs, data pipelines, and AI automation frameworks. Develop reliable AI features with evaluation, tracing, recovery, and escalation capabilities. Create polished React interfaces, work directly with customers to define requirements, support customer-specific workflows, and influence the product roadmap. The role requires strong product engineering fundamentals, ownership, communication, and experience launching autonomous AI features into production.

Join a small engineering team to build backend services and tools for an AI-driven software product. Develop agent capabilities for multi-step business tasks, including email drafting, document completion, and third-party integrations. Improve agent reliability, contribute to shared infrastructure, and own delivery in a fast-moving development environment. The role is primarily backend with some frontend exposure and requires autonomy, strong Python skills, and experience with AI-assisted development.

Build and release product capabilities primarily through server-side services and data flows, with some user-interface work. Expand the platform, connect new products, guide architecture and deployment decisions, improve reliability and capacity, and create internal tools. Work independently with technical leadership in a fast-moving fintech environment while using AI-assisted coding tools across the stack.

Build and scale backend systems, APIs, infrastructure, and applications for multimodal sensing and AI intelligence platforms. Responsibilities include processing sensor, audio, video, and environmental data; supporting data pipelines and model inference; ensuring reliability, scalability, and data integrity; and contributing to engineering standards and long-term technical strategy.

Join as the founding full-stack engineer to extend a TypeScript React/Next.js prototype, design product features, integrate AI/OCR, write tests and infrastructure, talk to users, and iterate quickly to drive growth.

Own the full technology stack for an AI food assistant, taking an iPhone app from internal testing through beta and scale. Responsibilities include backend and mobile development, architecture, infrastructure, deployments, monitoring, AI feature reliability, catalog and personalization systems, creator and internal tooling, App Store releases, security, and engineering standards. The role also involves product decisions, household research, technical leadership, and end-to-end ownership in a founding-team environment.

Own the full-stack design and development of a customer-facing web application in partnership with company founders. Build features using TypeScript and Python, create polished interfaces, and take products from customer discovery through release. Develop demos, launch materials, and promotional campaigns while using analytics and customer feedback to prioritize work. The role requires LLM and agent-based systems experience, strong product judgment, and the ability to work independently in a remote startup environment.

Founding Engineer responsible for architecting and building the company’s agentic commerce platform. The role focuses on scalable backend infrastructure, APIs, developer tools, payment and checkout integrations, browser automation, and full-stack product development. The engineer will independently ship production systems, solve reliability and latency challenges, influence technical direction, collaborate closely with founders, and help shape engineering culture and hiring.

Architect and build low-latency trading and clearing infrastructure in Rust for an institutional FX hedging venue. Own the technical roadmap, design risk management, margin, netting, and settlement engines, and uphold protocol security, reliability, and performance standards. The role requires deep Rust expertise, financial or trading infrastructure experience, AI-native development workflows, entrepreneurial ownership, and willingness to work on-site in New York City within an intense startup environment.

Own and extend Rightway’s commercial systems, especially Salesforce, by building Apex, Lightning Web Components, integrations, automations, and AI-powered tools. Improve commercial data quality, connect systems to the central data warehouse, and deliver solutions for sales and client success teams. The role is the first dedicated commercial systems engineer, with potential to mentor and manage future team members.

Own and build Nectar Social’s React Native mobile platform for iOS and Android. Responsibilities include establishing architecture, shared components, testing, CI/CD, performance standards, monitoring, and error tracking. The engineer will develop AI-powered experiences, integrate social and e-commerce APIs, support real-time data-intensive features, and collaborate with product, design, and company leadership to shape the product and technical direction.

Own customer deployments from data access through trusted, outcome-driven systems. Responsibilities include exploring undocumented data warehouses, defining business ontologies, building agent-powered signals and workflows, validating outputs, diagnosing failures, measuring customer outcomes, and turning deployment learnings into reusable tooling. The role requires strong customer collaboration, technical judgment, SQL and dbt fluency, applied data science literacy, and comfort with ambiguity. This is a fully in-office position in New York City.

Own end-to-end product development across backend and frontend, translating ambiguous product goals into technical plans and customer-facing features. Build APIs, workflows, data models, AI features, infrastructure, and product logic using modern full-stack technologies. Partner with product, design, customers, and the founding team while making technical and product tradeoffs. Work in person five days per week and occasionally travel to factories or team offsites.

Founding Engineering Manager and Technical Lead responsible for defining architecture, building billing and claims systems, ensuring data integrity and auditability, and hiring and leading the engineering team. The role is hands-on, covering backend systems, APIs, partner integrations, reconciliation, invoicing, internal claims tooling, engineering practices, and cross-functional collaboration.

Build and own full-stack software systems from design through production. Responsibilities include integrating language models into workflows, making architecture decisions, defining ambiguous technical problems, and ensuring privacy, security, correctness, reliability, and scale. The role requires independent work with sensitive data and end-to-end ownership of complex projects in an education technology startup.

Own product experiences from concept through production, including user flows, prototypes, polished frontend interfaces, and reusable UI patterns. Simplify complex wholesale workflows, design interactions for AI agents, work directly with customers, and incorporate user feedback. The role requires strong UI/UX judgment, frontend engineering ability, systems thinking, and initiative in a fast-growing startup environment.

Develop, test, and release full-stack production features across backend, frontend, infrastructure, architecture, analytics, and integrations. Parse complex healthcare datasets into actionable insights, contribute to data modeling and cloud pipelines, and participate in code reviews and technical decisions. The engineer will own problems end to end, collaborate with customers and product teams, and work in a hybrid NYC environment.

Build the foundational inference cloud platform, including its control plane, API, serving layer, routing, model placement, scheduling, reliability, and observability. The role involves scaling a heterogeneous GPU and ASIC fleet, partnering with data center and model deployment teams, and shaping platform architecture as an early individual contributor at a small startup.

Own the end-to-end LLM inference serving stack for specialized ASIC hardware. Design request routing, batching, scheduling, KV-cache management, autoscaling, monitoring, alerting, and failover. Optimize throughput and cost per token, support production reliability and on-call operations, collaborate with compiler and hardware bring-up teams, shape the serving roadmap, and establish technical standards for a growing engineering team.

Build and maintain mission-critical wealth management systems for SMB clients. Design data pipelines, ETL/ELT processes, data models, warehouses, analytics, and reporting solutions using AWS, Snowflake, Mage AI, and other big data tools. Collaborate with data scientists and analysts on predictive models, statistical analyses, and machine learning algorithms. Develop software with Next.js and Python while working closely with the team and clients on financial-domain challenges.

Build production software and scalable cloud systems for AI-powered insurance calls. Responsibilities include designing core LLM systems, refining prompts, developing privacy- and security-conscious solutions, orchestrating thousands of concurrent phone calls, integrating FHIR APIs, testing, debugging, and documenting software. The role also contributes to product direction, engineering practices, and company culture as a foundational team member.

The Founding Software Engineer will develop software solutions for a healthcare platform, improving patient experiences and operational efficiency, while driving engineering best practices and participating in feature development.

As a Founding Senior Software Engineer at EliseAI, you will develop both frontend and backend applications, design APIs, and work closely with teams to build features that enhance user experience. The role requires ownership of projects and driving product development with a focus on efficiency and scalability.

Build and ship full-stack product features across backend APIs, data pipelines, and frontend interfaces. Develop FastAPI and PostgreSQL services, create Next.js and Tailwind components, integrate external services, and own features from design through deployment and support. The role also contributes to engineering practices, architecture, and the company’s early-stage growth.

Build foundational infrastructure, large-scale data extraction systems, agent architectures, data access policies, and production AI agents for enterprise customers. The role also involves cross-stack technical design, production debugging, customer-driven solution development, and shaping the founding engineering culture. This is an in-person role in New York City five days per week.