Top Senior Software Engineer Jobs

Maintains, troubleshoots, enhances, and modernizes legacy enterprise applications and distributed systems. Develops and tests software modules, interfaces, APIs, and components; performs code and design reviews; resolves operational issues; supports security upgrades and compliance; and collaborates with cross-functional teams in Agile environments.

Designs, develops, profiles, and optimizes CUDA-based GPU workloads for AI, scientific computing, and high-throughput data processing. The role requires expertise in GPU architecture, CUDA C/C++, memory hierarchies, distributed computing, custom ML kernels, and production performance engineering. Responsibilities include integrating kernels into ML frameworks, collaborating with engineering and research teams, reviewing designs and code, mentoring engineers, and delivering measurable performance improvements.

Build and own backend services, APIs, data pipelines, infrastructure, and ML systems powering an AI-native video platform. Solve distributed systems, scaling, concurrency, and performance challenges; deploy and operate generative AI models; integrate third-party providers; and improve product quality through production instrumentation and experimentation. The role partners across product, design, client, and AI teams and requires end-to-end ownership in a fast-paced, in-person NYC environment.

Lead the architecture, design, implementation, and evolution of core C++ frameworks supporting Torc’s autonomous driving stack. Drive technical direction for real-time systems, communication, state management, testing, observability, and validation. Collaborate with Behavior and Perception teams, lead architecture and code reviews, mentor engineers, resolve platform-level issues, and establish scalable software engineering standards for reliable autonomous vehicle operations.

Lead Software Engineer responsible for software design and development for defense-related projects, mentoring junior engineers, and ensuring project alignment with requirements and standards.

Lead design, development, testing, and deployment of scalable microservices and responsive UI using Java/Spring and React/TypeScript. Drive architecture, standards, and cross-team initiatives, mentor engineers, integrate APIs (REST/GraphQL), employ event streaming and caching, and apply generative AI/LLM techniques to deliver enterprise solutions.

Leads end-to-end software engineering for healthcare payments systems within an agile team. Designs, develops, tests, reviews, debugs, and supports secure, scalable production applications using .NET/C#, SQL, and AI-assisted development tools. Drives automation, operational stability, responsible AI adoption, and software delivery practices. Partners with vendors and internal teams to evaluate architectures and technical solutions while coordinating cross-functional delivery.

Designs, develops, configures, supports, and maintains Elasticsearch and ECK clusters and scalable data-processing platforms. Troubleshoots cluster and query performance, supports developers, integrates data stores and APIs, automates infrastructure, and maintains existing systems. Collaborates with engineers, developers, project managers, and customers to resolve complex software issues and drive continuous improvement. The role requires an active TS/SCI clearance with polygraph and U.S. citizenship.

Lead architecture, design, and implementation of scalable MyAccount web and platform capabilities. Drive technical strategy across teams, develop applications and APIs, improve reliability, performance, observability, and security, and ensure robust automated testing. Mentor engineers, influence architectural decisions, connect technical initiatives to business goals, and maintain operational ownership of customer-facing systems.

Build and ship end-to-end product features across an author analytics dashboard, marketing site, free tools, billing, email, and AI-assisted functionality. Design data models and APIs, integrate third-party services, develop production LLM features, and maintain testing, monitoring, performance, and observability. The role includes code review, technical documentation, independent product decisions, and close collaboration with the founder in a remote-first environment.

Design, build, and operate secure, high-performance sandboxed runtime environments for multi-tenant Kubernetes workloads. Develop GPU-aware scheduling, isolation, and resource management strategies; integrate container runtimes, lightweight virtual machines, and virtualization technologies; optimize container, VM, I/O, and GPU performance; conduct profiling and benchmarking; and contribute to Linux, runtime, virtualization, GPU, and security architecture.

The Software Engineer will handle data collection for AI model training, managing cloud infrastructure and collaborating with the team to enhance data quality and scale.

Lead the design and delivery of scalable cloud-native platform capabilities, including infrastructure, tooling, ML frameworks, APIs, and AI-driven applications. Own the full software development lifecycle, conduct system design reviews, mentor engineers, drive technical decisions, and collaborate with stakeholders on requirements and success metrics. Build resilient backend solutions using Java, Python, microservices, containers, automation, and data-driven engineering practices.

Design, develop, and maintain large-scale backend systems and APIs. Lead technical design and implementation of distributed, service-oriented and event-driven architectures. Perform code reviews, ensure security and performance, troubleshoot complex production incidents, and lead root-cause analysis and remediation. Hybrid role with 3 days in-office and ~20% domestic travel.

Design, develop, and maintain scalable Go microservices, APIs, and data models supporting Cloudflare’s global IP addressing infrastructure. Build distributed, fault-tolerant systems for IP assignment, traffic engineering, BGP management, and provisioning. Collaborate with reliability, network, and product engineers while debugging complex systems and learning edge networking, routers, DNS, and Linux environments.

Design, implement, and operate Cloudflare’s S3-compatible R2 API gateway across Workers and Kubernetes. Own authentication, authorization, routing, rate limiting, error handling, API compatibility, reliability, observability, and production operations. Lead projects from design through deployment, participate in on-call and incident response, improve performance, and collaborate with storage, metadata, networking, and platform teams. Use AI coding tools extensively in daily development.

Build, deploy, and operate highly scalable Network Services systems on Cloudflare’s global edge network. Develop distributed networking systems involving BGP, Linux kernel dataplanes, control planes, APIs, traffic analytics, and data pipelines. Improve system performance, reliability, and scalability while solving complex customer problems. Own solutions end to end across design, development, deployment, and operations, and collaborate across engineering and product teams.

Develop and refactor C/C++ embedded software and signal-processing algorithms for space applications. Collaborate with multidisciplinary engineering teams, respond to evolving requirements, and improve existing code efficiency and maintainability. The role requires substantial embedded development experience, algorithm or digital signal processing expertise, strong technical communication, a computer science or computer engineering degree, U.S. citizenship, and an existing Top Secret clearance with eligibility for Top Secret/SCI and a CI polygraph.

Design, develop, integrate, and verify real-time mission software in C++ and C# on Linux platforms for electronic warfare systems. Responsibilities include full lifecycle development, Agile and DevSecOps practices, CI/CD, automated testing, cross-disciplinary collaboration, support for international military programs, and mentoring early-career engineers.

Leads software engineering for mobile build and release platforms. Designs Jenkins and Groovy CI/CD components, develops Python backend services with Django, FastAPI, and MongoDB, and builds AI-assisted developer tooling using LLMs through AWS Bedrock. Partners with iOS, Android, and cross-platform teams to deliver build insights, dashboards, automation, and responsible AI-enabled workflows while ensuring secure coding, testing, resiliency, and agile delivery.

Architect and re-engineer highly scalable, resilient backend data systems supporting patient services. Lead distributed systems strategy, make architectural decisions, improve performance and reliability, mentor engineers, establish operational practices, and collaborate with product managers and cross-functional stakeholders to shape engineering and product direction.

Own the technical direction of the web platform, including shared frontend frameworks, component libraries, tooling, build pipelines, and developer workflows. Architect scalable reusable components, establish frontend standards for accessibility, performance, and design systems, and champion AI-assisted development practices using tools such as Cursor and GitHub Copilot. Identify systemic issues, improve engineering velocity, and provide cross-functional technical leadership across product teams.

Staff Backend Engineer responsible for architecting AI-powered products, integrating production LLM systems, validating designs through proof-of-concepts, and setting technical direction for high-innovation teams. The role combines architecture, planning, technical leadership, hands-on coding, roadmap development, technical debt reduction, and cross-functional collaboration with Product, Design, and Engineering leadership. Candidates will help establish scalable backend architecture and raise engineering quality across the organization.

Own the technical direction of the web platform, including shared UI frameworks, component libraries, frontend tooling, build pipelines, and developer workflows. Establish frontend architecture, performance, accessibility, and design-system standards while promoting AI-assisted development practices across engineering. Identify systemic issues, drive cross-team solutions, and partner with product, design, and engineering stakeholders to improve web quality and delivery velocity.

Build and maintain the Workers control plane: design and ship features, improve performance, scalability, and reliability, design resilient storage and I/O, own production reliability/on-call, drive projects end-to-end, mentor junior engineers, and prototype new technologies.