Varsha Tolani

Varsha Tolani

SDE Backend Developer
India
English, Japanese, Chinese, Hindi

About Me

Performance-oriented software engineering student with hands-on experience building low-latency data pipelines, microservices, and real-time computation systems in C, C++, Java, and Python. Proven ability to design and o…

Experience

AI / Machine Learning Research Intern

SpearHub (Zovia Program), Remote
Jan 2026 - Present · 6 months

Built time-series forecasting and early-risk-detection models on enterprise-scale ERP datasets with non-stationary, noisy, and incomplete signals — analogous to live trading data environments.
Engineered lag-based, rolling-window, and seasonality-decomposed feature sets to capture temporal dynamics; reduced false-positive delay alerts by ∼18% via structured feature ablation.
Implemented reproducible experimentation pipelines with versioned datasets, fixed train–validation splits, and calibration-aware evaluation (ROC-AUC, precision–recall, Brier score).
Designed structured failure-mode analyses to identify uncertainty amplification sources, directly informing downstream system design decisions.

AI / Machine Learning Research Intern

SpearHub (Zovia Program), Remote
Jan 2026 - Present · 6 months

Built time-series forecasting and early-risk-detection models on enterprise-scale ERP datasets with non-stationary, noisy, and incomplete signals — analogous to live trading data environments., Engineered lag-based, rolling-window, and seasonality-decomposed feature sets to capture temporal dynamics; reduced false-positive delay alerts by ∼18% via structured feature ablation., Implemented reproducible experimentation pipelines with versioned datasets, fixed train–validation splits, and calibration-aware evaluation (ROC-AUC, precision–recall, Brier score)., Designed structured failure-mode analyses to identify uncertainty amplification sources, directly informing downstream system design decisions.

Software Development Engineer Intern

Flipkart (Runway Internship), Bangalore, India
Jun 2025 - Aug 2025 · 2 months

Selected from 23 candidates nationwide for a highly competitive internship within the Loyalty Platform team, supporting large-scale subscription and membership systems serving millions of users.
Designed and implemented low-latency backend microservices in Java and Spring Boot, deployed on Kubernetes, with careful attention to throughput, fault tolerance, and response latency under production load.
Instrumented system components with structured telemetry to enable downstream behavioral analysis, reducing mean time-to-diagnosis by ∼35% for latency anomalies in subscription workflows.
Participated in performance-focused code reviews and architectural design discussions with senior engineers, gaining exposure to production-scale system constraints and rollout procedures.
Optimized Cosmos DB query patterns and caching strategies, cutting p99 API latency by ∼20% across critical service endpoints.

Software Development Engineer Intern

Flipkart (Runway Internship), Bangalore, India
Jun 2025 - Aug 2025 · 2 months

Selected from 23 candidates nationwide for a highly competitive internship within the Loyalty Platform team, supporting large-scale subscription and membership systems serving millions of users., Designed and implemented low-latency backend microservices in Java and Spring Boot, deployed on Kubernetes, with careful attention to throughput, fault tolerance, and response latency under production load., Instrumented system components with structured telemetry to enable downstream behavioral analysis, reducing mean time-to-diagnosis by ∼35% for latency anomalies in subscription workflows., Participated in performance-focused code reviews and architectural design discussions with senior engineers, gaining exposure to production-scale system constraints and rollout procedures., Optimized Cosmos DB query patterns and caching strategies, cutting p99 API latency by ∼20% across critical service endpoints.

AI and Machine Learning Research Intern

TechSaksham (Microsoft & SAP), Remote
Dec 2024 - Jan 2025 · 1 month

Benchmarked and optimized ML inference pipelines through systematic preprocessing and architecture experiments, improving runtime efficiency by ∼30% without degrading model accuracy.

Applied AI & Systems Research Intern

Aditeraction, Remote
Oct 2024 - Jan 2025 · 3 months

Profiled and optimized LLM inference pipelines in a browser-based environment, reducing end-to-end latency by ∼40% through batching and caching strategies.
Designed evaluation protocols measuring latency–quality tradeoffs, establishing quantitative benchmarks across realistic query workloads — transferable directly to trading signal evaluation.

AI and Machine Learning Research Intern

TechSaksham (Microsoft & SAP), Remote
Dec 2024 - Jan 2025 · 1 month

Benchmarked and optimized ML inference pipelines through systematic preprocessing and architecture experiments, improving runtime efficiency by ∼30% without degrading model accuracy.

Applied AI & Systems Research Intern

Aditeraction, Remote
Oct 2024 - Jan 2025 · 3 months

Profiled and optimized LLM inference pipelines in a browser-based environment, reducing end-to-end latency by ∼40% through batching and caching strategies., Designed evaluation protocols measuring latency–quality tradeoffs, establishing quantitative benchmarks across realistic query workloads — transferable directly to trading signal evaluation.

Skills

Linux NumPy Docker Kubernetes Low-latency pipelines microservices REST APIs Cosmos DB Spring Boot PyTorch Scikit-learn Git Valgrind gprof perf multithreading Ablation studies latency profiling AUC/calibration Pandas Market microstructure signal processing risk modeling Order book modeling time-series forecasting early-risk-detection models structured telemetry structured feature ablation calibration-aware evaluation failure-mode analyses LLM inference pipelines batching and caching strategies ML inference pipelines systematic preprocessing architecture experiments runtime efficiency optimization limit order book engine lock-free ring buffer memory layout optimizations unit and stress-test harnesses real-time streaming feature computation engine vectorized Pandas operations Cython-compiled hot paths pre-computed rolling aggregations calibrated risk models C++ Java Python SQL Microservices Multithreading pthreads Latency profiling AUC Calibration Signal processing Risk modeling Time-series forecasting
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