json-schema jobs in San Diego

Sigma Defense seeks a Web Developer with 6+ years of experience building and deploying applications in DoD or enterprise environments, with expertise in application security, DoD STIGs, and cybersecurity requirements. The role involves developing React-based web applications and administrative dashboards, building and maintaining RESTful APIs using Python/Flask backends, managing PostgreSQL databases, and implementing authentication/authorization systems like Keycloak.…See more You'll work across the full stack—frontend, backend, database, and infrastructure—troubleshooting issues, documenting architecture, and collaborating with developers, testers, system administrators, and end-users in regulated or offline network environments.

Senior full-stack engineer responsible for building complete features across React frontends, backend services, APIs, and data storage. You will design and evolve APIs, contribute to platform architecture, and deploy containerized services to diverse environments (local, CI/CD, air-gapped Kubernetes).…See more You'll work directly with users and cross-functional teams to translate complex workflows into reliable, intuitive applications, with hands-on ownership of testing, troubleshooting, and iterative improvement across the full stack.

Staff Engineer role building full-stack applications for the Forge platform, spanning React frontends, backend services in Go or Python, and containerized deployments. Responsibilities include designing and evolving APIs, data models, and platform architecture; deploying and troubleshooting services in Kubernetes and air-gapped environments; and collaborating with users, product, and engineering teams to deliver features end-to-end.…See more Required: production experience across frontend and backend, TypeScript/React proficiency, backend services in Go/Python, database/data modeling, containers/CI-CD, and strong communication. Preferred: hands-on Kubernetes, job orchestration tools (Ray, Argo, Dagster), schema-driven APIs (OpenAPI, gRPC), and experience with multi-environment deployments.

Design and build frontend experiences in TypeScript and React for autonomy development workflows, translating complex technical requirements into intuitive applications. Partner with cross-functional teams to understand user needs, integrate domain APIs and backend services, and deliver reliable systems across local, cluster, edge, and air-gapped environments.…See more Work across the stack to debug and extend backend services in Go or Python, build reusable components, and architect scalable frontend solutions for simulation, synthetic data generation, and test-and-evaluation tools.

Design, build, and ship LLM-powered capabilities end to end—from prototyping and fine-tuning models to deploying production agents and retrieval systems. Own the full stack: prompt and context engineering, multi-step agent design with tool calling, RAG systems (embeddings, chunking, hybrid search, reranking), fine-tuning on multi-GPU with LoRA/QLoRA, evaluation and tracing infrastructure, and clean APIs for other engineers.…See more Work in a secure, distributed environment where the platform runs on customer compute, cloud, or hybrid setups, requiring expertise with both commercial and self-hosted models.