Top Software Engineer Jobs

You will work on critical product challenges and contribute directly to xAI's mission, thriving in a meritocratic and hands-on environment.

Design and build system software to run large-scale deep learning and image-processing workloads on clusters. Develop and maintain HPC infrastructure, collaborate with product teams to deliver high-quality software, and troubleshoot Linux-based, multi-threaded, multi-process, and distributed systems.

Lead design, development, and deployment of sustainment information systems for defense applications. Define enterprise architectures, prototype cloud-native solutions (Kubernetes/Docker/CI-CD), modernize sustainment platforms, investigate emerging technologies, produce technical reports and proposals, collaborate with DoD and industry, mentor junior engineers, and support testing with periodic travel. Position supports NAVSEA and submarine sustainment environments and requires eligibility for government security clearance.

Develop, integrate, test, and maintain undersea systems simulation software. Integrate vehicle guidance, control, and signal processing into larger simulations, verify and validate simulations, document designs and tests, and provide technical leadership or mentoring on projects.

Develop, integrate, and maintain undersea systems modeling and simulation software for DoD applications. Implement and test vehicle software (guidance, control, signal processing), perform verification/validation, document algorithms and tests, and support simulation interfaces. Higher-level role may lead tasks and mentor junior staff.

Develop, deploy, and maintain research software in classified/HPC and cloud environments. Implement efficient algorithms and data structures, optimize performance, integrate with research infrastructure, provide technical support, and document tools. Higher-level duties include proposing features, leading projects, managing timelines, and supervising staff.

Design, implement, integrate, and test software for autonomous vehicle guidance and control. Develop algorithms for signal processing, detection, classification, tracking, and decision-making. Collaborate on system integration and testing, produce documentation and presentations. Senior roles add project leadership, architecture, mentoring, and technical/business development responsibilities.

Develop and integrate high-performance communication and signal-processing software for research across underwater, terrestrial, aerial, and space platforms. Design applications, libraries, interfaces, and device drivers; implement and test algorithms; build software architecture and infrastructure in Linux environments; use containerization and modern development tools to support DoD-focused research and field testing.

Design, implement, operate, and optimize ultra-low-latency electronic trading systems on Linux. Responsibilities include building distributed real-time systems, analyzing packet captures and core dumps, troubleshooting performance, using profiling and benchmarking tools, and optimizing networking, concurrency, throughput, and reliability. The role spans architecture through live production debugging and involves collaboration with developers, traders, and operations teams.

Build and operate scalable, low-latency APIs, event-driven services, integrations, and web applications supporting membership and loyalty experiences. Integrate and extend Antavo with commerce, CRM, CDP, marketing, and data platforms. Apply distributed-systems, reliability, observability, and security practices; troubleshoot production issues; contribute to reusable engineering assets; and mentor junior engineers.

Design, build, optimize, and support scalable consumer-facing mobile applications across iOS and Android using React Native, TypeScript, and JavaScript. Develop native integrations, reusable components, secure architectures, API integrations, automated testing, CI/CD pipelines, and production monitoring. Collaborate cross-functionally, contribute to releases and Agile delivery, mentor engineers, conduct code reviews, and drive mobile engineering excellence, accessibility, performance, and reliability.

Develop and maintain backend services with C#/.NET and responsive React front-ends; implement and consume REST APIs; write and troubleshoot SQL queries; participate in code reviews, testing, sprints, deployments, and technical discussions; use GitHub and GitHub Copilot; collaborate with QA, UX, Product, and cross-functional stakeholders.

Seeking a Software Engineer with 3+ years experience in software development, programming (Go, Java, C++, C#), and strong analytical skills.

Build and maintain cross-platform Electron desktop apps focused on reliability, performance, and real-time behavior. Implement desktop features (file access, notifications, auto-updates), integrate AI via backend APIs, optimize startup/memory, profile Electron overhead, manage large local state and message history, and ensure stability on macOS and Windows.

Build and ship end-to-end features across a TypeScript/Next.js monolith: dashboard, marketing site, billing, email, and AI-assisted tools. Own data models, APIs, third-party integrations, testing, observability, and production quality. Collaborate with the founder, review code, and improve engineering practices while delivering customer-facing features rapidly.

Design, develop, and own full-stack digital applications using .NET and Angular. Lead partner integrations and insurance product capabilities, build secure cloud-native solutions on Microsoft Azure, and deliver reliable customer-facing experiences. Collaborate with product, design, and business stakeholders; mentor engineers; and promote engineering excellence through code reviews, automated testing, secure coding, and AI-assisted development tools.

Lead architecture and hands-on development of the end-to-end video pipeline (live ingest, transcoding, storage, playback, and developer SDKs). Mentor engineers, collaborate across mobile/web/ML/platform teams, own monitoring and on-call support, and help scale video streaming and VoD capabilities for millions of streams and clips.

Lead the design, build, and scale of a hybrid semantic search platform on OpenSearch. Own indexing pipelines (MySQL, Kafka/RabbitMQ), integrate vector embeddings and neural search, tune relevance and ranking, ensure ultra-low latency and high availability, mentor engineers, and participate in on-call rotation.

Build and deliver front-end analytical dashboards in Palantir Foundry, support CI/CD pipeline configuration, implement metric definitions and data transformations, produce technical documentation, and participate in agile sprint activities. Test and validate dashboards, resolve integration issues, and support defect fixes while collaborating with senior engineers and government stakeholders.

Build and maintain pet-parent and provider-facing pricing features. Own projects end-to-end, write well-tested code, instrument services for observability, diagnose production issues, and collaborate with product, design, and data science.

Design, build, and optimize growth-focused product features and experiments (A/B tests) to improve acquisition, activation, engagement, retention, and monetization. Instrument analytics, analyze funnels and user behavior, improve onboarding and conversion paths, optimize performance and SEO, and build internal tools to support marketing, sales, and growth operations. Collaborate with Product, Marketing, Design, and Engineering and report on experiment outcomes and growth KPIs.

Design, build, and operate high-scale commerce/payments platform services. Collaborate with engineers, product, design, and data teams to clarify requirements, deliver customer-focused features, write technical documentation, participate in design and code reviews, and improve engineering processes.

Develop and productionize algorithms into robust software for synthetic aperture radar, electro-optical, and remote sensing. Collaborate with scientists, participate in full development lifecycle, troubleshoot issues, and improve image product quality while learning emerging space technologies.

Hands-on role building and maintaining a firmwide front-office trading, investment, and analytics platform. Develop Python services and APIs, SQL-backed data workflows, cloud-native integrations, and visualization tools. Partner with commercial trading teams to optimize trading processes, support market data/positions analysis, and drive cloud-first development.

Develop and maintain a multi-physics simulation engine, integrate CFD/meshing/CAD tools, build visualization and web-based 3D interfaces, apply ML/AI to accelerate simulations, validate results, troubleshoot integrations, and collaborate cross-functionally to optimize manufacturing parts.