Top Senior Software Engineer Jobs in NYC, NY

Develop and maintain a fraud-analysis web application and platform, with 60–70% frontend focus. Build APIs, collaborate with product and cross-functional teams, write automated tests, analyze product metrics, troubleshoot issues, maintain service-level requirements, and participate in on-call support. The role uses React, backend languages, databases, Docker, and AWS technologies in a remote U.S.-based environment.

Design, develop, integrate, test, and productize perception software for autonomous driving systems. Responsibilities include implementing robust and reusable software components, deploying deep neural network models to embedded real-time platforms, developing verification plans, debugging systems, maintaining documentation, and analyzing real or synthetic benchmark data. The role requires close collaboration with perception engineers and researchers throughout the software development lifecycle.

Develop and ship high-performance iOS applications and camera experiences for Snapchat. Responsibilities include designing and implementing tested Objective-C software, launching features, evaluating technical tradeoffs, collaborating with Design, conducting code reviews, and using AI tools while maintaining strong standards for correctness, security, performance, and scalability.

Develop and launch scalable Android features from design through implementation, creating smooth and stable user experiences. Evaluate technical tradeoffs, collaborate with design, conduct code reviews, and maintain high standards for correctness, security, performance, and production readiness. Use Kotlin, Java, RxJava, Dagger, and AI-assisted development tools. The role requires substantial software development experience and Android application expertise.

Own and architect large-scale backend systems powering Anthropic’s API, Claude products, and enterprise platforms. Lead complex projects, make scalability and reliability decisions, collaborate across engineering, product, research, and commercial teams, and remain hands-on with code and AI models. Potential areas include platform serving, developer experience, agentic systems, identity, enterprise foundations, safety, and cloud-native distribution.

Build and maintain scalable full-stack web applications and systems for Snap products. Develop user interfaces, optimize performance and browser rendering, contribute to shared libraries, analyze operational metrics, and deliver secure, production-ready code. The role requires strong front-end and back-end development skills, testing knowledge, distributed systems experience, and the ability to use AI tools responsibly in engineering workflows.

The Senior Forward Deployed Software Engineer will work with customers to build and deploy applications using physics AI models, collaborate with cross-functional teams, and maintain RESTful APIs and microservices in Python, focusing on impactful solutions for engineering challenges.

Lead technical strategy and architecture for a client delivery data platform. Own platform priorities, integrations, reliability, engineering standards, proofs of concept, and system-level fixes. Partner with Product and senior stakeholders, mentor engineers, handle technical escalations, evaluate emerging tools and AI practices, and write code for critical work. The role requires expert SQL and Python, scalable data platform experience, cloud expertise, and hands-on LLM orchestration experience.

Build and improve Cloudflare Workers Runtime features that execute customer code at the edge. Responsibilities include optimizing performance, reliability, and scalability; expanding JavaScript and WebAssembly support; shaping technically feasible features; owning production code; and debugging large-scale distributed systems. The role requires strong computer science fundamentals, C++ or Rust experience, web knowledge, and Linux-based systems expertise.

Staff Software Engineer responsible for technical strategy, scalable full-stack systems, team operations, reliability, monitoring, code quality, and talent development. The role involves building customer-facing card experiences and backend services using Python or Kotlin, AWS, MySQL, Spark, Kubernetes, and React-based frameworks. The engineer will own features end to end, collaborate cross-functionally, manage technical risks and trade-offs, support on-call health, and apply AI safely to improve development and customer experiences.

Design, implement, operate, and scale critical backend services such as identity, social graph, and persistence systems. Collaborate across teams to deliver product solutions, test and debug code, and apply best practices for availability, scalability, security, operational excellence, and cost management. Independently deliver medium-sized features, support incident resolution, and use AI tools responsibly to improve development workflows while maintaining production-quality standards.

Build and ship web-based transportation management software for trucking customers. Collaborate with product, UX, engineers, and users to solve domain-specific problems, deliver features quickly, make sound quality-versus-velocity tradeoffs, and contribute across the engineering team in a remote-first environment.

Lead large-scale initiatives for a high-performance Linux-based network sensor, improving ingestion, scalability, continuous capture, queue reliability, observability, and production diagnostics. Own root cause analysis and postmortems, establish engineering standards, translate business goals into technical plans, and mentor engineers through design and code reviews. The role requires deep Rust expertise, distributed systems experience, concurrent programming, packet capture, message brokers, and cybersecurity best practices.

Build and productionize agentic research systems for Global Investment Research. Responsibilities include developing full-stack applications with Java or Python, implementing RAG pipelines and multi-agent workflows, integrating AWS AI and cloud services, creating evaluation and benchmarking suites, monitoring production systems, supporting incidents, writing tests, maintaining CI/CD, and collaborating with business stakeholders in Agile sprints.

Leads enterprise connector activation for Claude, including onboarding funnels, experimentation, authorization flows, platform APIs, governance controls, and enterprise administration. Builds reusable ecosystem foundations, improves Microsoft 365 and Google Workspace integrations, uses data and customer feedback to prioritize work, and sets technical direction while mentoring engineers and influencing cross-functional teams.

Build and operate software platforms for infrastructure cost attribution, usage metering, budgeting, forecasting, capacity planning, and efficiency. Develop dependable data pipelines, shared models, APIs, reporting tools, and automated controls connecting infrastructure consumption to costs and ownership. Lead technical direction, collaborate across engineering and finance, improve resource utilization, ensure system correctness and scalability, and mentor engineers.

Leads software engineering and quantitative development for asset management technology, building secure, scalable systems supporting research, portfolio management, and investment workflows. Develops and reviews production code using Java and/or Python, applies AWS cloud-native practices and infrastructure as code, improves operational stability, and promotes responsible AI-assisted engineering. Partners with stakeholders and vendors on architecture and technical solutions while supporting data engineering, distributed processing, databases, and financial services applications.

Leads the design, development, testing, troubleshooting, and operational support of secure, scalable Java backend applications. Builds cloud-native microservices, resilient distributed systems, and RESTful solutions using SQL and NoSQL databases. Reviews code, resolves production issues, automates recurring remediation, supports continuous delivery, promotes modern engineering practices, and mentors teams across software engineering.

Build and operate scalable Ruby on Rails APIs and React interfaces for data activation. Responsibilities include API design, performance and reliability improvements, automated testing, production troubleshooting, documentation, architecture discussions, incident response, and cross-functional collaboration. The role requires secure, maintainable software development and responsible use of AI-assisted tools, with opportunities to establish API standards and mentor engineers.

Develop scalable Java and Python applications for mortgage trading, quantitative analytics, workflows, and reporting. Integrate AI and generative AI capabilities, collaborate with business and technology teams, and oversee application development from analysis through production. Responsibilities include coding, testing, CI/CD, debugging, operational support, process improvement, and resolving complex technical initiatives. The role also advises stakeholders and coaches junior analysts while working with limited supervision.

Design and build healthcare messaging solutions using C# .NET, RESTful APIs, Azure, and DaVinci FHIR. Develop web services, map healthcare message structures, write unit and integration tests, review code, troubleshoot production issues, and deploy software to Azure. Collaborate across teams, mentor junior engineers, manage complex projects, and improve prior authorization workflows.

Build a greenfield, low-latency algorithmic execution platform in C++. Responsibilities include developing FIX gateways, exchange market data feed handlers, venue connectivity, pre-trade risk controls, platform infrastructure, audit logging, and algorithmic strategy migration. The role requires optimizing critical paths for microsecond-level performance while integrating U.S. exchanges and dark venues. Future work includes multi-asset execution, research and backtesting, and international market expansion.

Improve Radar’s geocoding and autocomplete systems at massive scale by enhancing query understanding, retrieval, ranking, relevance, and location-data quality. Build automated data pipelines, integrate messy global sources, and apply ML or LLMs where useful. Work across Scala and Python data pipelines, Rust search and serving systems, and customer-facing product improvements while participating in on-call support.

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.

Design, develop, test, deploy, and support full-stack enterprise applications for legal operations, matter management, document management, compliance, and business automation. Build React frontends, Java and Spring Boot microservices, APIs, integrations, event-driven solutions, and cloud-native deployments. Work with databases, Docker, Kubernetes, Azure, AWS, CI/CD, monitoring, security, and production support while collaborating with legal, compliance, product, architecture, and engineering teams in an Agile environment.