CollateSan Francisco, CABuild and scale backend services, APIs, and data pipelines using Go, Postgres, and AWS for an AI platform accelerating life sciences innovation. Collaborate with product and ML teams to deliver reliable, performant systems in a fast-paced startup.
Collate uses Go for scalable backend services, Postgres as our main database, TypeScript & React for frontend development, and Python for AI & ML services. Our infrastructure is hosted on AWS with Kubernetes for orchestration and Terraform + Argo CD for configuration management. Other key systems include S3, Kafka, OpenSearch, LLMs, and other AI models.
Backend Engineer building and optimizing core document workflows (viewing, editing, embeds, exports) and greenfield projects in a Django monolith. Requires 3+ years backend experience, strong Python skills, performance optimization, and automated testing.
Build and operate the enterprise control plane for OpenAI's Codex AI software engineer, focusing on security, governance, identity, access controls, encryption, and policy enforcement systems for large organizations.
Software Engineer III designing, building, and maintaining scalable backend systems with Java, Node.js/NestJS, Kafka, and cloud technologies (AWS/GCP). Requires Master's in CS + 2 years (or Bachelor's + 4 years) backend experience, microservices, databases, and REST APIs.
Software Engineer building scalable backend systems, services, and APIs for Upstart Bank, a modern AI-enabled national bank. Translate regulatory and business requirements into reliable software in a fintech environment; 4+ years backend/full-stack experience required.
Build and scale the control plane for Cloudflare Workers, the serverless edge platform. Design distributed systems, high-traffic APIs, storage schemas, and own production reliability for services powering Pages and R2. Requires strong Go experience plus knowledge of observability, databases, and Kubernetes.