Top Senior Software Engineer Jobs

The Software Engineer develops and enhances complex software systems, analyzes requirements, debugs software, and designs new features while leading projects.

The Protocol Software Engineer at Sei Labs will develop core components of the Sei Blockchain, focusing on EVM performance and optimizing decentralized network infrastructure.

Design, build, and scale highly available backend services and APIs for a D2C ordering and storefront platform. Collaborate with front-end engineers and product teams to implement merchant configurations, ordering flows, and performant distributed systems.

Design, develop, integrate, and test simulation and flight training software across the full SDLC. Architect simulation applications, collaborate with multidisciplinary teams (systems, DevSecOps, test), participate in Agile Scrum, analyze system capabilities, and support deployment and qualification for defense simulation projects.

Develop, integrate, test and maintain desktop/web applications and Java microservices; build and maintain CI/CD pipelines; collaborate with SW, HW and test teams; identify technical risks and report to leadership; work in an Agile, process-oriented environment. On-site in San Diego, requires Top Secret clearance and up to 25% travel.

As a Senior Full-Stack Software Engineer, you will develop AI-centric web applications, participate in architectural decisions, and mentor team members while managing project priorities and deliverables.

As a Senior Backend Engineer, you will develop secure and performant APIs, collaborate across teams, and drive technical development through mentorship and reviews.

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, 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.

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.

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.

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.

Responsible for building decision-making frameworks for multi-aircraft wildfire suppression, developing algorithms, and ensuring real-time software performance. Collaborates with engineers and firefighters for system validation.

The Senior Software Engineer will develop mission simulation infrastructure, integrating various systems and ensuring safety-critical features for autonomous firefighting operations.

The Software Engineer, Perception develops autonomous aircraft systems to detect and manage wildfires using real-time data processing and machine learning techniques.

Build and deploy customer-facing applications that serve physics AI models. Collaborate with data scientists and ML engineers to design E2E solutions, build RESTful APIs and microservices (FastAPI/Python), deploy to cloud using Helm/Kubernetes/Terraform on AWS/Azure, and work onsite with customers to iterate and deliver production tools.

Develop and maintain the Java client library and high-performance C/C++ server applications. Implement message parsers and feed handlers, optimize for extreme throughput and low latency, build tools for petabyte-scale processing, collaborate on build/deploy/CI practices, monitor uptime, and support smooth feature rollouts.

Implement and maintain the C# client library and high-performance C++ server applications. Build message parsers and feed handlers, optimize for millions of messages/second and nanosecond latency, develop petabyte-scale data tools, collaborate on build/deploy/CI/CD, monitoring, and ensure reliable feature rollouts.

Develop and maintain responsive, accessible front-end web applications using modern frameworks. Collaborate with UX and back-end teams, translate designs into clean code, optimize performance and accessibility, ensure cross-browser compatibility, and participate in testing and code reviews. Stay current with emerging front-end technologies and propose improvements.