Top Senior Software Engineer Jobs

Lead end-to-end design, build, and operation of scalable backend services and customer-facing frontend features. Collaborate cross-functionally to deliver reliable APIs, ensure observability and maintainability, participate in code reviews, improve engineering processes, and help shape technical decisions and culture.

Design and implement highly reliable, high-performance algorithms and systems software for modern data platforms. Own end-to-end delivery from concept to production, diagnose and resolve complex technical issues, influence cross-functional system design, and mentor junior engineers. Drive adherence to performance, reliability (e.g., six 9s), schedules, and architectural vision while collaborating with product and engineering teams.

As a Senior Software Engineer at Arista, you will design and develop Layer1 software for physical connectivity, interface with customers, and mentor junior engineers.

As a Senior/Lead Software Engineer, you'll design and build network systems features, manage development processes, and collaborate with engineers and customers. Responsibilities include software development in C, C++, Python, and maintaining hardware drivers, while mentoring junior engineers.

Lead engineering and develop API-focused full‑stack solutions for brokerage products. Design scalable architectures, build secure cloud-native applications (AWS), drive API strategy, implement CI/CD and DevOps practices, mentor team members, and ensure code quality via TDD/BDD and security/static analysis tools.

Design and build Java/J2EE Spring-based APIs and multi-layer applications; develop web services and database schemas (DB2/Oracle) with PL/SQL; participate in code reviews, unit/integration testing; coordinate technical deliveries across teams and support CI/CD and DevOps collaboration.

Design, develop, and maintain scalable full-stack applications for intermediary clearing and custody platforms. Collaborate with product, architecture, and engineering teams to modernize applications, implement cloud migrations, build APIs, automate workflows, and improve CI/CD, observability, security, and deployment practices in an Agile environment.

Design and build Java-based, messaging and microservice applications. Lead API design, cloud/container solutions (Docker, Kubernetes, AWS/Azure), CI/CD, and relational database development (DB2/Oracle). Provide technical leadership, mentoring, code reviews, and resolve cross-technology roadblocks. Work on blockchain and digital asset solutions (Ethereum, Solana) and smart contracts (Solidity, Rust, Move) within financial services.

Develop and optimize high-throughput C++ algorithms for remote sensor data exploitation (image analysis, detection, tracking). Prototype, integrate, and test software within government frameworks as part of an Agile team. Work full-time in-person in Boulder, CO and obtain/maintain DoD security clearance.

Develop, optimize, and integrate high-throughput C++ algorithms and multi-object tracking software for counter-UAS and remote sensing systems. Work in an Agile small-team environment to prototype, test, and deliver low-latency processing solutions within government frameworks.

Design, develop, and maintain scalable, secure backend services and APIs for a healthcare caregiver platform. Drive cloud-native modernization (microservices, serverless), ensure compliance (HIPAA, OWASP), troubleshoot production issues, optimize performance, mentor junior engineers, and collaborate with product and architecture teams to deliver reliable, high-performing solutions.

Design, develop, maintain, and test complex enterprise software systems and cloud infrastructure. Implement solutions using COTS/GOTS, analyze system performance, troubleshoot issues, and collaborate with users and systems engineers. Emphasis on OpenStack-based cloud deployment, Linux and Python development, and IT operations support.

Join Adaptive as a Full Stack Engineer, responsible for delivering high-quality software, leading technical discussions, and driving project execution.

Design, build, and operate end-to-end VoIP features and infrastructure for a production phone service. Own architecture, reliability, and performance of VoIP systems, collaborate with product and design, mentor teammates, and use AI coding tools to accelerate delivery.

Design, develop, and deliver scalable backend systems and components using .NET 10 and C#. Build and maintain databases and messaging infrastructure (PostgreSQL/SQL Server, RabbitMQ), deploy with Docker and AWS, apply DDD and ORMs, triage/prioritize work, and contribute to distributed, event-driven architecture with emphasis on reliability and idempotency.

Drive user acquisition, engagement, retention, and monetization by building full‑stack growth features, designing and running A/B experiments, analyzing user data, and collaborating with product, marketing, and data teams to scale AI products.

Design and build reliable software solutions, mentor junior engineers, and ensure technical consistency across projects while communicating complex concepts effectively.

Lead design and implementation of real-time 3D visualization and rendering pipeline for Android-based in-car infotainment. Integrate visual assets, optimize shaders and GPU/CPU/memory for low-latency performance, debug complex rendering issues, and collaborate with product and UX teams to translate perception data into fluid animations on resource-constrained hardware.

Own design, implementation, and production support of Windows kernel-mode enforcement drivers (filesystem, process/thread, handles, registry) and the kernel/user-mode enforcement boundary. Reduce enforcement latency at scale, extend enforcement to containers and isolation, ensure compatibility across Windows builds, handle driver signing and deployment, collaborate cross-platform on policy and the Rust userspace agent, and mentor engineers while driving technical direction and operational stability.

Design and build scalable APIs for backend-driven user experiences using Go, while collaborating with product and engineering teams.

Lead integration strategy and execution for Zoox's agentic platform. Collaborate with teams on tool integration, debug failures, and ensure resource readiness for production. Define integration artifacts and contribute to release processes.

As a Senior Software Engineer, you will architect and implement software systems for autonomous 3D printing, optimizing hardware control, telemetry, and machine learning processes.

The Senior Software Engineer II at Freenome will design and develop reliable backend services, mentor junior engineers, and collaborate with cross-disciplinary teams in a remote setting.

Lead the Full Stack Software discipline by defining technical vision, governing tools/processes/training, building a community of practice, enabling sector-wide engineering toolchains, resolving technical shortfalls, embedding lessons learned, and improving software engineering KPIs and interoperability across multiple Aeronautics sites. This is a strategic leadership role focused on governance and enablement rather than day-to-day coding.

Lead the long-term technical vision and architecture for ServiceTitan's iOS platform. Design scalable mobile frameworks, define data access patterns via GraphQL, champion TCA, adopt Apple platform capabilities, integrate AI-assisted developer tools, drive cross-org alignment, mentor senior engineers, and set engineering standards for code quality, performance, testing, and extensibility.