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Navyatej Tummala
Junior Backend Engineer specializing in cloud APIs and AI-enabled systems
Raleigh, NCCloud Backend Engineer2 years experienceJuniorTechnologyCloud ComputingEducation
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About
Built and shipped "OnCall Copilot," a production Slack-based RAG assistant that answers on-call questions from runbooks and postmortems with citations using a FAISS vector index. Emphasizes reliability and measurable performance via strict guardrails ("no evidence, no answer"), evaluation metrics, drift monitoring, and operational hardening with Docker, logging, health checks, and offline fallback.
Experience
Cloud Backend EngineerARoS Lab, NC State University
Software Engineering InternSymbiosis Technologies
Software Engineering ResearcherGITAM University
Education
North Carolina State Universitymaster, Computer Science (2026)
GITAM Universitybachelor, Computer Science and Engineering (2024)
Key Strengths
- Built and deployed a production Slack RAG assistant with citations (OnCall Copilot)
- Reliability-focused LLM system design (confidence thresholds, required citations, abstain behavior)
- Strong handling of messy source data (cleaning, chunking heuristics, metadata)
- Performance and stability optimization (top-k/context tuning, offline fallback, Docker, logging, health checks)
- Evaluation-driven development (labeled test sets, success/citation/abstain/latency/cost metrics, regression evals, drift monitoring)
- Pragmatic model/retrieval selection based on accuracy-latency-cost constraints
- Effective collaboration with non-technical stakeholders (rubrics, demos, iterative UX/prompt improvements)
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