Top Senior C++ Jobs in Washington, DC

Leads and mentors simulation framework engineers building C++ and Python interfaces, adapters, and plugins for multiple simulation backends. Drives the HMSF product and migration roadmap, maintains legacy HMSSimBlocks support, and influences platform requirements. Ensures interoperability with defense simulation standards and supports hardware-in-the-loop and software-in-the-loop testing. Partners with program, integration, autonomy, and platform teams while improving documentation, templates, and developer enablement.

Lead complex systems initiatives for Cloudflare Browser Isolation across Chromium, distributed services, and remote browsing infrastructure. Design and implement C++, Rust, Go, and TypeScript systems; investigate cross-layer performance and reliability issues; improve observability, capacity, rollout safety, and resilience. The role includes architectural decision-making, technical leadership, mentoring, cross-team coordination, incident response, and production on-call participation.

Build and maintain enterprise DevOps and developer-experience infrastructure for Hivemind Solutions. Responsibilities include GitLab CI/CD pipelines, runner fleets, automation integrations, cloud-based simulation environments, Artifactory registries, secure container builds, Nix developer environments, and troubleshooting distributed development systems. The role requires strong scripting, Linux administration, cloud, security, and CI/CD expertise, along with eligibility for an active U.S. Secret clearance.

Lead and grow a software engineering team responsible for CUDA Math Libraries platform expansion and readiness. Own integration, qualification, compliance, validation, performance testing, defect triage, and technical roadmaps across specialized platforms. Collaborate with library, DevOps, QA, compiler, CUDA, release, and platform teams. The role requires hands-on high-performance numerical software development using C++ and Python, parallel computing, performance optimization, and software engineering leadership.

Design, implement, and optimize scalable high-performance dense linear algebra kernels for GPUs. Provide technical leadership, collaborate with product and partners, improve performance and quality, and contribute to library roadmaps and development practices.

Develop and optimize GPU-accelerated algorithms for quantum circuit simulations, collaborating with various teams, and leading technical efforts.

Leads qualification and validation for HDD, SSD, NVMe, and PCIe solutions used in Azure infrastructure. Develops automated test suites and strategies covering performance, reliability, security, interoperability, error recovery, and fleet scenarios. Analyzes failures and field incidents, partners with suppliers on root-cause resolution, validates hardware, firmware, drivers, and system interactions, and leads cross-functional technical initiatives while mentoring engineers.

Designs and delivers cloud-based software solutions with strategic customers and Microsoft product teams. Leads requirements definition, architecture, dependency identification, design documentation, and development of maintainable code. Mentors engineers, contributes to open-source assets, coordinates project and release plans, and serves as a designated responsible individual for system reliability, monitoring, on-call support, performance, and operational improvements.

Develop cross-platform native C++ abstractions for the Unity Editor across Windows, macOS, and Linux. Maintain and modernize the existing codebase, support new operating-system features and design guidelines, troubleshoot difficult platform issues using native debuggers, and collaborate with product managers and worldwide engineering teams to plan and deliver editor experiences.

Lead the architecture and redesign of Axon’s multi-cloud networking stack across AWS, Azure, and devices. Define connectivity, reliability, security, performance, compliance, and cost strategies; guide production rollout and cross-team initiatives; identify risks; advise engineering leadership; mentor senior engineers; and establish engineering standards. The role also includes setting group-level AI strategy and using AI tools to accelerate software development.

Design and implement advanced modeling and simulation tools to evaluate system performance and support strategic decision-making for national defense. Perform quantitative analysis, develop physics-based and agent-based models, optimize AI and machine-learning algorithms, and collaborate with government clients. The role involves EO-IR and 3D simulation, computational modeling, and potentially high-performance computing, computer vision, and autonomous-system behavior development.

Develop low-level embedded software and firmware for wearable smart optics systems. Responsibilities include board bring-up, Linux drivers, BSPs, Device Tree, DDR initialization, embedded Linux with Yocto, hardware-software debugging, and Python user-space tooling. Collaborate with electrical and mechanical engineers to build reliable, field-ready defense technology from prototype hardware.

Design, deliver, and operate business-critical distributed systems for Signify Health’s value-based care technology platform. The role requires full-stack development, polyglot programming, scalable distributed-systems expertise, cloud engineering, SQL and relational database knowledge, and strong communication. Preferred experience includes event-driven architectures, AI-assisted development tools, Kafka, APIs, containers, Kubernetes, infrastructure as code, monitoring, CI/CD, and agile methods. Quarterly or as-needed travel is required.

Develop and validate advanced passive RF geolocation algorithms using TDOA, FDOA, interferometry, detection theory, and estimation methods. Build simulation environments, model real-world signal impairments, translate algorithms into real-time software, and support RF hardware integration, calibration, testing, and field validation. Collaborate with hardware, systems, production, and business development teams while documenting technical assumptions and performance results. The role is on-site in Hawthorne, California, or Washington, D.C., with travel up to 30%.

Develops advanced passive RF geolocation algorithms using TDOA, FDOA, interferometry, detection theory, and estimation methods. Responsibilities span mathematical formulation, simulation, software implementation, real-time acceleration, calibration, hardware requirements, integration, field validation, and technical documentation. The role requires collaboration with hardware, systems, production, and business development teams and periodic travel up to 30%.

Design and implement scalable, noise-aware quantum circuit simulators (state-vector, tensor-network, stabilizer) and error‑correction pipelines. Integrate hardware-specific noise models, mid-circuit measurement and decoders, and optimize simulation pipelines for HPC, GPUs, or distributed systems. Collaborate with hardware and algorithm teams, prototype new simulation methods, and support performance estimation and business development.

Develops C++ and Python simulation plugins, adapters, and interfaces for defense modeling and simulation environments. Leads migration from HMSSimBlocks to HMSF, maintains legacy compatibility, builds reusable CIGI integrations, supports DDS and network communications, and troubleshoots simulation-autonomy integration issues. The role also includes designing extensible architectures, writing automated tests, documenting software, and supporting integration teams.

Designs, develops, deploys, and supports scalable MuleSoft API-led integrations using CloudHub and Anypoint Platform. Builds REST and SOAP services connecting enterprise applications, Salesforce, databases, and cloud systems. Creates DataWeave transformations, MUnit tests, API security policies, and CI/CD deployments. Troubleshoots integration issues, optimizes performance, monitors applications, and contributes to API design, documentation, code reviews, and architecture discussions within Agile teams.

Leads a 5–10 person autonomy engineering team developing motion planning, tactical behaviors, multi-agent coordination, track fusion, and decision-making capabilities. Owns hiring, mentoring, technical direction, architecture, delivery, integration, validation, and field deployment across software-in-the-loop, hardware-in-the-loop, and live testing. Collaborates with cross-functional engineering teams and defense customers while remaining technically engaged in C++ development and complex autonomy challenges.

Leads and develops a software engineering team building customer-facing competitive intelligence products. Responsibilities include setting technical direction, translating priorities into execution plans, guiding architecture and quality, managing incidents, recruiting engineers, improving processes, and promoting responsible AI-assisted development. The role requires close collaboration with Product and Engineering leadership and is based in Rosslyn, Virginia, with at least three office days per week.

Lead the design, development, deployment, and operation of complex production software for Yext’s Competitive Intelligence products. Provide technical leadership, mentor engineers, guide architecture and technical planning, lead incident response, collaborate across teams, participate in recruiting, and promote high engineering standards. Build customer-facing experiences involving data, AI, visualizations, user interfaces, and agentic workflows while responsibly using and evaluating AI-assisted development tools.

Designs, integrates, deploys, and troubleshoots autonomy and vehicle-intelligence systems across embedded hardware and software platforms. Responsibilities include integrating sensors, autopilots, datalinks, PNT/GPS/INS, and ground control stations; supporting UAV flight tests; conducting SIL and HIL validation; collaborating with vendors and defense customers; and delivering customer demonstrations. The role requires strong C++ development, robotics integration, networking, embedded Linux, and eligibility for a U.S. security clearance.

Deploys and operates secure platform infrastructure across AWS GovCloud, Kubernetes, and on-premises environments. Leads customer integrations, cross-domain data flows, troubleshooting, testing, documentation, and technical requirements for SOCOM and government users. Translates operational constraints into product improvements while supporting ATO compliance, incident response, sustainment, and capability transition.

Designs, develops, tests, deploys, and enhances Microsoft Power Platform applications and automated solutions. Translates user stories into secure, maintainable technical implementations using Power Apps, Power Automate, databases, web technologies, APIs, and low-code platforms. Responsibilities include agile collaboration, unit testing, troubleshooting, performance validation, documentation, training, knowledge transfer, and application security.

Develops and maintains real-time 6DOF guidance, navigation, and control simulations for missile and flight vehicle hardware-in-the-loop environments. Responsibilities include C/C++ software development on Linux, hardware control, simulation execution, data processing, performance analysis, regression workflows, visualization, and engineering reporting. The role collaborates with systems, software, and test teams and presents technical findings to engineering groups and customers.