Ai Engineer Jobs

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AI Engineer

Tessera Labs•San Jose, CA
•$200,000 - $250,000

About The Position

Tessera Labs is hiring an AI Engineer to own the systems around its enterprise AI models: production agents, their execution harnesses and tools, context, guardrails, evaluations, and monitoring. The role focuses on making agents reliable and safe as they operate across complex, often undocumented enterprise processes, data, and code. This is a production engineering role: work will run against systems that customers depend on, and must be traceable, reproducible, reversible, and generalizable across customers. The engineer will build and improve production agents and the supporting tool, retrieval, context-management, classical machine learning, evaluation, and observability layers. They will diagnose production failures from execution traces, address root causes in the system, and design approval gates and rollback paths for safe operation in live enterprise environments. The role is on the systems side of the problem; candidates more interested in the models themselves are directed to the Research Engineer role. Tessera Labs describes itself as a product company building a governed, vendor-agnostic, multi-agent transformation platform for large enterprises. The company raised a $60 million Series A led by Andreessen Horowitz, with Foundation Capital, Myriad Venture Partners, and Osage University Partners participating.

Requirements

  • At least 3 years building and operating production software, including meaningful recent experience with LLM-powered systems.
  • Experience shipping agentic systems that real users depend on and owning incidents when they fail.
  • Fluency with agent technologies and practices, including tool calling, orchestration, context engineering, retrieval-augmented generation (RAG), evaluations, and tracing.
  • Experience building and measuring retrieval systems over messy real-world corpora.
  • Background in traditional machine learning, including supervised learning, feature engineering, and model evaluation.
  • Treat evaluation as an engineering discipline.
  • Ability to think in systems and customer outcomes, not only model metrics.
  • Comfort with non-determinism and the ability to build reliable systems around it.
  • Strong Python skills and comfort with TypeScript.
  • Ability to ship quickly and verify results.
  • Interest in large, complex, undocumented enterprise systems.

Nice To Haves

  • Hands-on experience with enterprise platforms, APIs, and extension models, such as SAP, Salesforce, Workday, Oracle, Snowflake, MuleSoft, or ServiceNow.
  • Experience with knowledge graphs, ontologies, or semantic models for messy real-world systems.
  • Experience with code analysis, program transformation, or automated refactoring at scale.
  • Experience with MCP, sub-agents, or agent skill and plugin architectures.
  • Background in distributed systems or workflow engines, where partial failure is expected.
  • Experience at an early-stage startup or as a founder.
  • Familiarity with enterprise security and compliance, including SSO, RBAC, segregation of duties, PII handling, SOC 2, and data residency.

Responsibilities

  • Design and ship production agents that understand enterprise landscapes, plan and execute changes across process, data, and code, and verify the results.
  • Build typed, permissioned, well-documented tools that let agents interact with enterprise systems within human-approved authorization limits.
  • Improve agent performance through prompting, context construction, tool-use strategies, and decision logic.
  • Build retrieval systems for enterprise artifacts and metadata, including chunking and indexing, hybrid search, reranking, grounding, and evaluation.
  • Manage agent context by deciding what information to provide, compress, or omit during long-running tasks.
  • Apply classical machine learning to tasks such as routing, ranking, classification, anomaly detection, and confidence estimation when it is more appropriate than an LLM call.
  • Build evaluation and monitoring systems, including task sets based on customer landscapes, regression coverage for deployments, and alerts for schema, authorization, or model-version changes.
  • Instrument agent runs so model calls, tool invocations, decisions, and human approvals can be reconstructed for audit.
  • Diagnose production failures using execution traces, identify root causes, and improve the system to prevent recurrence.
  • Design guardrails, approval gates, and rollback paths for agents operating on live enterprise landscapes.
  • Turn customer-specific patterns into platform capabilities that generalize across customers.
  • Ship and verify software quickly, and focus on customer outcomes and reliable operation.

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