Top C++ Jobs in Washington, DC

Build and deploy data-driven software solutions directly with customers. Responsibilities include understanding complex operational problems, designing architectures, wrangling large-scale data, coding custom web applications, collaborating with technical and non-technical teams, engaging customer executives, and owning high-stakes projects end to end with minimal supervision.

Work on customer-facing, high-impact projects as an intern FDSE: design and implement data-driven solutions, wrangle large-scale data, build web apps, discuss architecture, and own end-to-end execution while collaborating with technical and non-technical stakeholders. May require travel and US government background checks.

Develop end-to-end software and systems in an agile environment, from architecture and design through production. Build systems software using C, C++, or Rust; work with operating-system interfaces, concurrency, process management, inter-process communication, and multithreading. Integrate identity services using OIDC, apply Zero Trust security controls, identify system improvements, and support client missions. The role requires TS/SCI clearance, relevant education, Agile or Scrum certification, and Security+ certification.

Design, develop, test, deploy, and maintain .NET applications and services across the software development lifecycle. Troubleshoot application, integration, and compatibility issues; write automated tests; participate in code reviews; collaborate with product managers, designers, developers, and stakeholders; and improve development processes, tools, and technical execution.

Lead the MinuteClinic Product Engineering team in building reliable, cloud-native software for patient and provider experiences. Own engineering roadmaps, technical direction, distributed systems architecture, AI capabilities, production reliability, and modernization across applications, APIs, and kiosks. Hire, coach, and develop engineers while partnering with product, clinical, security, and infrastructure stakeholders. Remain hands-on through architecture, coding, prototyping, code reviews, and complex production investigations.

Develop and optimize GPU-accelerated quantum computing simulators for NVIDIA CUDA-Q. Build simulation components, quantum circuit and operator representations, execution interfaces, Python bindings, and resource management. Improve performance, memory use, CPU-GPU movement, and multi-GPU scaling. Collaborate with SDK, research, product, and open-source teams while implementing simulation methods such as state-vector, tensor-network, stabilizer, and open-system dynamics approaches.

Develop, modernize, integrate, test, deploy, and troubleshoot secure software systems across applications, databases, networks, cloud infrastructure, identity platforms, and operating-system interfaces. Responsibilities include systems programming, concurrency, inter-process communication, database engineering, network protocol analysis, Infrastructure as Code, OIDC integrations, Zero Trust implementation, and security-focused documentation. The role supports classified federal mission programs and requires collaboration with cybersecurity, infrastructure, data, and mission stakeholders.

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.

Develop and maintain Chromium-based browser and distributed systems components using C++, Rust, Go, and TypeScript. Own features through design, testing, rollout, and production support; debug browser, Linux, and service failures; improve reliability, latency, startup performance, and resource efficiency. Participate in code reviews, documentation, automated testing, collaboration, and on-call incident response.

Maintains mission-critical government data workflows, responds to outages during on-call rotations, performs root-cause analysis, and converts lessons learned into automation, scripts, and product improvements. The role requires Python, Java, SQL, Spark optimization, distributed data-processing experience, strong communication, and an active Secret clearance.

Designs and delivers cloud-based software solutions for government customers using modern engineering practices. Partners with customers, Microsoft product teams, and open-source communities to develop scalable solutions. Leads architecture and design, mentors engineers, drives cross-product project and release plans, and serves as a designated responsible individual for system reliability, monitoring, and on-call support.

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.

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.

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.

Design, implement, and operate distributed software for Northwood’s global satellite ground-station network. Responsibilities span cloud orchestration, customer and control-plane APIs, workflow engines, real-time telemetry and TT&C, edge hardware control, high-throughput networking, monitoring, infrastructure security, CI/CD, simulations, and production-line testing. The role requires ownership of technical areas, cross-functional collaboration with hardware and communications engineers, and development of reliable, scalable systems supporting satellite communications.

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.

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.

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.

Develop and maintain microservices and full-stack web applications using Java, C++, Python, and cloud technologies. Apply Agile, DevSecOps, CI/CD, GitLab, and automated testing practices. Support cloud development environments, unit and integration testing, technical leadership, mentoring, task direction, work-product reviews, customer collaboration, and training-material development. This is an on-site role supporting space and intelligence systems in Boulder, Colorado.

Develop Java-based microservices and full-stack web applications using Java, C++, Python, and cloud technologies. Apply Agile, DevSecOps, CI/CD, GitLab, unit testing, and integration testing practices. Support cloud development environment configuration, mentor junior engineers, provide technical direction, review work products, collaborate with customers and multidisciplinary teams, and maintain training materials.

Develop and support quantum algorithms and software, collaborate with customers and cross-functional teams, build MVPs for quantum and AI use cases, and apply software engineering practices to scale quantum systems in lab or agile environments.

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.