Top Staff Engineer Jobs in NYC, NY

Lead design and implementation of the Tax platform: build scalable, fault-tolerant systems, improve extensibility, mentor engineers, drive technical strategy and roadmap, collaborate cross-functionally, improve reliability/incident response, and build AI guardrails to safely leverage agentic LLMs for tax compliance.

Lead frontend architecture and implementation for Squarespace Domains Growth. Build high-performance, accessible UI, reusable components, and client platforms; mentor engineers, drive technical strategy, collaborate with product/design/backend, and optimize for conversion and scalability.

Lead architecture and technical strategy across services, guide migrations, define AI strategy and responsible use, align engineering with product and business goals, mentor senior engineers, and drive scalable, resilient data and integration boundaries to improve customer experiences across digital and physical products.

Design, implement, and operate cloud-native HPC and ML/AI infrastructure (AWS/GCP). Lead containerization, IaC (Terraform/CloudFormation), orchestration (Kubernetes/EKS/GKE), monitoring, and migration. Collaborate with HPC specialists to automate deployments, optimize performance, and maintain platform reliability, security, and cost efficiency.

Lead technical direction and build a scalable network observability platform. Design collectors, storage, alerting, and visualization; standardize telemetry, mentor engineers, drive cross-team initiatives, and serve as senior on-call escalation for observability incidents and architecture.

Lead the evolution of CoreWeave AI Object Storage's security, manage cross-functional teams, and develop secure cloud-scale storage systems.

As a Senior Staff Engineer, you'll lead technical initiatives across teams, maintain quality standards, mentor engineers, and improve system architecture at Braze.

Lead the developer experience roadmap and own multi-language SDKs and the code-generation pipeline. Design CI, release automation, observability, and tooling (CLI, starter repos). Improve cross-language parity, docs, and developer onboarding; remove systemic friction and represent DX to Product, Engineering, and Partnerships.

Own and evolve Babylist's AWS infrastructure and developer platform using Terraform and Kubernetes. Improve CI/CD reliability, support engineers across environments, define monitoring and alerting standards, lead incident response and postmortems, and shape platform architecture to scale for millions of users.

Design and deliver reusable paved paths (documentation, IaC modules, templates, libraries, and tools) to simplify cloud-native development. Partner with architects and platform teams to translate patterns into adoptable implementations, iterate based on feedback, and evolve AI-assisted developer workflows to improve developer experience and accelerate delivery.

The role involves leading the Code Gen team to modernize legacy applications using AI-powered tools, ensuring system scalability and efficiency through collaboration and strategic technical decisions.

Lead integration, validation, and fielding of advanced weapon capabilities on X-Bat across the full lifecycle. Define system behaviors and architectures, coordinate cross-functional integration, support lab/ground/flight tests, perform troubleshooting and root-cause analysis to reduce integration risk and accelerate capability delivery.

Design, develop, and field high-performance Ground Control Station and C2 software using C++/Qt/QML and QGroundControl. Lead architecture and technical direction, mentor engineers, define APIs/ICDs, debug integration/latency issues, support field tests, implement post-mission debrief tools, and ensure interoperability with C2 standards.

Own and maintain native C++ build systems for autonomous aircraft. Improve developer velocity by reducing build/test cycle time, integrate CI with HIL and simulation, implement monitoring and alerts, troubleshoot build/test failures, and collaborate with engineers to design and deploy DevEx/DevOps solutions.

Lead aircraft-level thermal analysis and characterization for VTOL unmanned aircraft. Develop and validate analytical and CFD models, run trade studies, define requirements, plan and analyze thermal tests, mentor teams, and mitigate aircraft thermal risks to meet mission-critical aerospace requirements.

Lead design and development of advanced electrical systems for autonomous aircraft, including circuit and subsystem design, part selection, schematic capture, simulation, verification, debugging, and production releases. Integrate embedded systems and sensors for autonomy, coordinate cross-functional teams, mentor engineers, define technical requirements, and develop automated test solutions to improve hardware reliability and production readiness.

Lead survivability engineering for autonomous aircraft: design and optimize low-observable features, perform EM signature modeling and RCS testing, partner with multidisciplinary teams and materials scientists, translate threats into survivability requirements, and support assessments and milestone decisions throughout the program lifecycle.

Architect and deliver scalable, secure systems across teams; solve complex cross-team problems; lead large technical initiatives; evaluate emerging technologies; mentor engineers; align technical direction with product and business outcomes while balancing performance, maintainability, and cost.

Design, build, and maintain People systems automations and integrations (Workato, Workday, Greenhouse, Slack) using production-quality code. Improve CI/CD, reliability, observability, and AI-driven automation (Claude, MCP). Serve as technical lead for People Technology, partner with stakeholders, and drive scalable, maintainable automation solutions.

The Phased Delivery SME will design and govern the phased delivery model for AI data centers, ensuring safe and timely operational readiness across construction, commissioning, and IT deployment.

Lead and scale foundational platform systems: optimize PostgreSQL performance, build CI/CD pipelines, manage message queues, implement IaC with Terraform, architect observability, drive security and SLOs, and maintain container orchestration to ensure reliability, scalability, and developer velocity.

The Staff Software Engineer will lead architectural design and delivery of critical systems, ensuring performance and efficiency at scale, while mentoring others in the engineering community.

Lead technical initiatives in GenAI for APM, guiding long-term strategy and development of ML features while mentoring engineers and collaborating across teams.

Lead complex customer engagements as a senior technical owner, designing and implementing production-grade integrations and distributed systems, shaping product roadmaps from field insights, mentoring engineers, and driving cross-functional technical decisions to move ambiguous problems to production while improving reusable platform capabilities.

Lead full-stack development for employer and employee tax account systems: design reliable backend APIs and data models, build automation and agency-integration pipelines, model jurisdiction-specific compliance rules, mentor engineers, partner with product and operations, and deliver scalable, test-driven solutions that ensure tax accuracy and reliability at scale.