Title: Senior AI Engineer — Inference & Agent Systems

Location:
- BLR/Remote India

What We're Building

Arcana is building AI agents that synthesize information across heterogeneous
sources and deliver structured, reasoned answers in real time. The product only
works if the agents are fast, reliable, and correct, not approximately correct.

Our stack: Go + Temporal for orchestration, a Plan-Execute-Synthesize agent
architecture, and an evaluation harness we use to measure every regression. The
problems are hard. The latency bar is aggressive. The accuracy requirements are
unforgiving.

The Work

Inference Optimization
- Drive TTFT below 400ms for multi-step agent pipelines
- Streaming optimization: first token to user while sub-agents are still running
- KV cache strategy, prompt compression, energetic context window management
- Multi-provider routing: model selection by latency, cost, and task type across
OpenAI, Anthropic, Gemini, and open-weight models

Agent Architecture
- Design and implement Plan-Execute-Synthesize pipelines that run sub-agents in
parallel DAGs,



not sequential chains
- Build reliable orchestration on top of Temporal: retries, timeouts, partial
failure recovery, idempotency
- Structured output enforcement: JSON schema validation, retry loops on
malformed LLM output, graceful degradation
- Tool call design: schema design that LLMs actually follow reliably across
providers

Evaluation & Harness
- Own the eval framework end to end: ground truth datasets, automated scoring
pipelines, regression detection on every PR
- LLM-as-judge pipelines for qualitative output assessment
- Latency regression testing - p50/p95/p99 tracked across every deployment
- Adversarial test case design: ambiguous queries, missing data, conflicting
sources, malformed tool responses

Infrastructure
- Model serving and cold start optimization
- Async worker architecture for parallel sub-agent execution
- Observability: trace every token, every tool call, every synthesis step

📌 Senior AI Engineer — Inference (Bengaluru)
🏢 Arcana Analytics
📍 Bengaluru