Top Senior Software Engineer Jobs

Lead technical delivery and integration of autonomy software for V-BAT and X-BAT, defining flight-autonomy interfaces, integrating payloads and mission autonomy, coordinating cross-team engineering, ensuring mission readiness, supporting flight tests and deployments, mentoring engineers, and improving integration workflows and testing infrastructure.

Lead technical delivery and integration of autonomy software for new platforms (air, maritime, space). Own end-to-end development, testing, and fielding of autonomy features, mentor teams, drive architecture and ICDs, support live tests, and transition R&D into operational capabilities.

Lead technical strategy and architecture for CoreWeave's orchestration platform (SUNK). Own critical orchestration components, drive cross-org initiatives in scheduling, quota enforcement, and hyperscale scaling. Mentor senior engineers, establish reliability and observability best practices, and ensure workloads run reliably and efficiently for large GPU ML training and inference clusters.

Lead backend and full-stack work on the Payments team, building multi-gateway integrations (Stripe, PayPal), payment APIs, and customer payment UIs. Ensure secure, compliant (PCI-DSS) payment flows, reliability, observability, and scalability across AWS/Kubernetes microservices. Partner cross-functionally to design architecture, implement settlement/reconciliation, and maintain high availability.

Design and implement data platforms, manage data infrastructure, develop streaming architectures, improve performance, and ensure data compliance.

Serve as the technical IC leader for the Provider organization: set technical roadmap and engineering standards, design and review architectures, drive cross-team initiatives, mentor engineers, and deliver high-throughput, low-latency, cloud-based microservice systems for provider-focused products.

Build and own runtime infrastructure for agentic AI: orchestration engine, distributed session management, event-driven pipelines, structured concurrency, observability, and caching/state layers to support long-running, low-latency agent sessions at scale.

Build and improve Belfry’s React Native and Expo mobile application and React web platform for field officers and back-office teams. Establish UI best practices, observability, and design systems; contribute to APIs, backend services, integrations, and infrastructure as needed. Help adopt AI-powered coding tools, take ownership of product initiatives, communicate technical and product ideas, and mentor engineers.

Architect and refine scalable cloud infrastructure software for enterprise and internet-scale environments. Responsibilities include developing robust software, designing systems supporting 1,000+ nodes, optimizing performance, and collaborating with distributed technical teams in agile environments.

Build and maintain full-stack applications, microservices, APIs, and highly available AWS services using Node.js and event-driven architectures. Develop tested, documented code across front-end and back-end layers, deploy and scale applications, monitor systems with Datadog, and contribute to technical design and production support. Collaborate with stakeholders, reverse-engineer legacy applications, use AI-assisted development tools, and own ambiguous projects through completion while contributing to quality improvements.

Lead technical design and delivery of large-scale, cloud-native marketing platforms. Build distributed Java/Spring Boot services, REST APIs and web frontends, drive platform modernization on AWS/Databricks, champion quality, observability, automation, and GenAI adoption, and lead cross-functional engineering teams.

Build and maintain Python backend services, REST APIs, WebSocket endpoints, cloud data-ingestion systems, and IoT device-management capabilities. Design PostgreSQL schemas and data strategies, improve telemetry reliability, develop automated tests, troubleshoot production systems, and support CI/CD, monitoring, and infrastructure. Collaborate with embedded, hardware, frontend, and product teams to deliver end-to-end features for provisioning, fleet management, firmware updates, and real-time device communications.

Design, implement, and maintain Java-based microservices and RESTful APIs across cloud-native environments. Build CI/CD pipelines, test automation, and observability integrations. Collaborate in Agile teams, apply security and Domain-Driven Design principles, troubleshoot production issues, and leverage AI developer tools to improve productivity.

The Senior Fullstack Software Engineer will design and maintain scalable features, owning key components, mentoring others, and ensuring code quality while architecting growth within the team's tech roadmap.

As a mid-level Software Engineer, you'll deliver Python-based platform features, collaborate with teams, and maintain system reliability and scalability.

Own and operate integrations across MES, WMS, QMS, PLM/PDM, and ERP systems. Develop C#/.NET API integrations, monitoring, alerting, logging, retry and reconciliation workflows. Manage PLM/PDM-to-MES pipelines, data mappings, documentation, authentication, access controls, CI/CD, and production support. Lead data migration from legacy finance systems, including extraction, cleansing, validation, cutover, and troubleshooting. The role is fully onsite in Los Angeles and may require extended hours or weekends.

Develop distributed backend systems, APIs, and services for data acquisition, access, and processing. Write maintainable Golang services and a Python client library, optimize ingestion and retrieval performance, and collaborate with physicists and engineers to translate requirements into software. The role supports simulation and experimental data analysis in a fusion-energy environment and may involve safety-sensitive work, occasional travel, nights, weekends, or on-call coverage.

Design and implement mission-critical state estimation and control algorithms, simulation models, and software infrastructure for real-time and offline testbeds. Develop production-quality software, offline data analysis tools, and integrated test plans for SPARC control software. Collaborate with engineering teams to integrate software into hardware and software testbeds, while improving company-wide tooling and development processes.

Lead design, development, modernization, and support of business-critical ASP.NET full-stack applications. Mentor and guide engineers, produce maintainable code, lead database design (Oracle PL/SQL), participate in design/deploy reviews, triage production issues, and assist hiring and team staffing.

Develops and optimizes enterprise search platforms using Elasticsearch or Solr, Java, Lucene, and distributed data technologies. Responsibilities include schema design, indexing, query optimization, cluster administration, backend service development, data pipelines, testing, deployments, troubleshooting, and Agile collaboration. The role supports scalable, high-performance search and analytics solutions in mission-critical defense and intelligence environments.

Develop and troubleshoot complex multidisciplinary software and hardware systems for semiconductor inspection products. Responsibilities include C++ software architecture and development, multithreading, memory optimization, performance profiling, debugging, system optimization, database design, unit testing, and SDLC activities on Windows and Linux. The engineer will use Git and CI/CD pipelines, collaborate across organizational levels, and travel to customer sites for software troubleshooting.

Design, develop, implement, test, and deploy software applications. Analyze information needs and data flows, gather user requirements, and evaluate procedures. Use Java, Oracle, MuleSoft, Python, and JavaScript. The role involves travel to client sites and various U.S. locations for short- and long-term assignments.

Designs, develops, tests, deploys, supports, and maintains software applications. Analyzes database architecture, coding standards, data flows, and user requirements; writes test cases; ensures quality assurance compliance; troubleshoots production issues; and works with Java, Oracle, PL/SQL, HTML, Varicent, Salesforce, Anaplan, and Snowflake. Requires travel and relocation to client sites throughout the United States for assignments ranging from short-term trips to extended engagements.

Designs, develops, implements, fine-tunes, and tests client/server and web applications. Collaborates with systems analysts, engineers, and programmers to define system capabilities, performance requirements, interfaces, and project limitations. Requires travel and relocation to client sites at various U.S. locations for short- and long-term assignments.

Designs, develops, implements, reviews, evaluates, and tests client/server and web applications. Gathers user requirements and works with Java, Oracle, Salesforce, J2EE, and HTML. The role requires travel to client sites and various U.S. locations for short- and long-term assignments.