Top C++ Jobs in Washington, DC

Develop and maintain scalable, reliable search and retrieval systems powering Yext Search and Chat. Responsibilities include full software development lifecycle participation, storage and framework development, system design, testing, deployment, operations, and cross-functional collaboration. The role requires writing clean, documented code and responsibly evaluating AI-assisted development output, with emphasis on performance, relevance, security, privacy, and maintainability.

Deploys, operates, and maintains Palantir software across production environments. Responsibilities include monitoring, alerting, configuration management, upgrades, troubleshooting distributed systems, improving reliability and scalability, automating manual workflows and runbooks, and developing infrastructure solutions using Foundry and Apollo. The intern collaborates across technical teams, owns infrastructure projects, and works with cloud infrastructure, storage systems, and observability tools.

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.

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.

Software Engineer Interns design, build, test, and debug production-quality software for autonomous systems. Projects may involve applications, embedded flight software, firmware, machine learning, simulation, APIs, data pipelines, or cloud infrastructure. Interns analyze requirements, collaborate with engineers using Agile practices, and deliver real features or capabilities during a 10–12 week paid internship.

Develop future concepts and mission-oriented use cases for Hivemind autonomous systems across air, space, land, and maritime domains. Translate customer needs and technology trends into concept studies, models, analyses, white papers, proposals, and technical briefings. Collaborate with Product, Engineering, Architecture, and go-to-market teams, monitor aerospace and defense developments, and support customer engagements through travel and presentations.

Design, build, and operate Cloudflare’s globally distributed cache and reverse-proxy data plane. Responsibilities include improving Pingora-based asynchronous systems, cache performance and correctness, purge and Tiered Cache services, APIs, observability, reliability, and production operations. The role owns features end to end, including design, implementation, testing, staged rollouts, incident response, and cross-team collaboration.

Design and maintain C++ and Python software for complex cross-platform systems. Develop APIs, messaging interfaces, CI/CD workflows, and automated tests while integrating distributed real-time systems, simulation tools, and third-party hardware and software. Debug system-level issues involving threading, timing, and data flow, contribute to architecture, and collaborate across teams. The role requires active Secret clearance and supports potential progression to TS/SCI clearance.

Designs, deploys, operates, and scales GPU/CPU infrastructure supporting Top Secret national security missions. Responsibilities include managing bare-metal and virtualized GPU platforms, building large-scale AI clusters, automating Kubernetes and operating-system deployments, operating databases and distributed storage, and improving service reliability, monitoring, and lifecycle management. The role collaborates closely with AI engineers and requires strong infrastructure, software development, networking, and systems expertise.

Design, deploy, operate, and scale GPU/CPU infrastructure for Starshield’s national security missions. Manage Kubernetes and AI clusters, bare-metal and virtualized GPU platforms, operating systems, databases, monitoring, and distributed storage. Develop infrastructure automation, improve service reliability and performance, collaborate with AI engineers and customers, and lead technical excellence while mentoring junior engineers.

Design and implement runtime protocols, formats, and systems to capture, serialize, stream, and replay interactive 3D content across engines. Own C++ runtime and C# APIs across editor, build, simulation, streaming, and playback. Optimize for low-latency, determinism, memory and bandwidth constraints, and build AI interfaces for inspecting and invoking engine state.

Own Quvia Grid’s optimization layer for government connectivity programs. Formulate bandwidth allocation, routing, scheduling, and capacity models; implement production solvers and heuristics; select and tune optimization methods; validate solution quality; diagnose deployed-system performance; document model behavior; and translate customer mission constraints into deployable software. The role requires extensive operations research experience, strong software engineering skills, customer engagement, and eligibility for a Secret clearance.

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.

Design, build, test, and operate secure, scalable production software and services. Partner with customers and stakeholders to translate needs into technical solutions, lead technical workstreams, and apply engineering best practices including automated testing, CI/CD, observability, and documentation. Develop reusable components and AI- or LLM-based solutions while driving end-to-end delivery and continuous improvement.

Deploy AI and robotics models on real-world hardware, optimizing inference for constrained edge systems and integrating sensors, controls, middleware, and legacy systems. Diagnose failures across calibration, dynamics, timing, and perception; evaluate model performance rigorously; and collaborate with research teams, customers, and partners to move systems from simulation and prototypes into production.

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.

Develops and implements full-stack software solutions from concept through production using agile methods. Designs, modifies, and enhances applications; writes front-end and back-end code; solves complex technical and workflow problems; evaluates architecture and operating environments; collaborates with cross-functional teams; and identifies system improvements. The role requires DHS suitability and participation in a government investigation and skills assessment.

Lead development and technical delivery of maritime autonomy capabilities for USVs, UUVs, and cooperating UAVs. Design motion planning, localization, tracking, safety assurance, COLREGS-compliant behaviors, and heterogeneous multi-agent collaboration. Build high-performance, well-tested software, integrate it onto real platforms, support deployment and demonstrations, analyze mission logs, and contribute to R&D roadmaps. Collaborate across perception, planning, simulation, hardware, and operational test teams while helping customers define requirements and technical approaches.

Develop and deploy autonomy software for unmanned surface, underwater, and aerial vehicles in maritime missions. Responsibilities include motion planning, localization and tracking, safety assurance, COLREGS adherence, multi-agent coordination, distributed optimization, rigorous software testing, platform integration, deployment support, mission-log analysis, and autonomy R&D. The role also involves cross-functional collaboration, customer and demonstration support, roadmap development, and mentoring junior engineers. Travel is typically approximately 25% annually.

Lead technical direction for maritime autonomy capabilities across multiple programs. Develop motion planning, localization, tracking, safe maritime behaviors, COLREGS-compliant operations, and heterogeneous multi-agent collaboration for USVs, UUVs, and UAVs. Build and integrate high-performance, rigorously tested software; support deployment, vehicle testing, demonstrations, and mission-log analysis. Mentor engineers, guide architecture and roadmaps, research new algorithms, and collaborate across perception, planning, simulation, hardware, and operational test teams. Travel is typically about 25%.

Own the navigation and positioning stack for head-worn and body-worn systems. Develop inertial, GNSS, calibration, sensor-fusion, and attitude-estimation solutions; integrate sensors across hardware and embedded software; and build testing, validation, and data-replay infrastructure. Collaborate with perception, firmware, mechanical, and manufacturing teams to deliver robust production navigation in challenging environments. Validate performance through laboratory and field testing against ground truth.

Develops and maintains e-discovery software solutions using MVC.NET, C#, SQL Server, PowerShell, and related technologies. Responsibilities include requirements gathering, system and functional design, coding, testing, deployment, troubleshooting, documentation, process improvement, automation, and collaboration with government clients, end users, vendors, and IT personnel. The role supports high-volume electronic data management and analysis for a federal client.

Lead design and implementation of modernized insurance underwriting and policy administration solutions. Drive cloud transformation, data-driven and secure architectures, improve risk selection and claims resolution, enhance customer experience through automation, mentor technical teams, manage client relationships, and oversee project lifecycle, budgets, and delivery quality.