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Nishaant Soni

Graduating Dec 2026 · open to full-time AI/ML and SWE roles across the US

I build AI systems that ship.

MSCS candidate at Northeastern, and multiple internships spent owning AI systems end to end: LangGraph orchestration, retrieval pipelines, prompt-level guardrails, AWS deployment, and the eval harnesses that keep all of it honest.

Focus
AI systems, agents, evals
Now
MSCS @ Northeastern
GPA
4.0 / 4.0
Base
Boston, MA

01Experience

  1. Jan 2026 - Jun 2026

    Boston, MA

    AI Engineer Intern · Transformly AI

    Sole engineer on the 0-to-1 MVP: a multi-agent platform that automates ML workflows from raw data to ranked model recommendations.

    • Architected a LangGraph platform of 3 orchestration graphs and 5 modeling subgraphs covering ingestion, EDA, model training, ranking and feature-importance analysis, adopted by 2 customer companies.
    • Partnered directly with the CEO to scope product priorities, translating shifting customer needs (e.g., adding time-series forecasting for a client) into build decisions, validating direction before committing engineering time.
    • Built an LLM project discovery and planning pipeline that reads business context, EDA output and dataset schemas to generate and rank up to 15 ML use cases by ROI and feasibility, cutting initial project planning from hours to under 4 minutes.
    • Engineered 60+ ML tool modules and 25+ human-in-the-loop checkpoints on LangGraph conditional routing and persistent state, making long workflows modular, auditable and resumable.
    • Led the AWS migration: 3 autoscaling Dockerized services (backend, UI and worker) on ECS Fargate with ECR, S3, SQS/DLQ, ALB, IAM, CloudWatch, Secrets Manager and Terraform.
    • Designed an LLM eval framework in LangSmith and DeepEval covering 18 production-critical calls, spanning prompt regression, hallucination detection, JSON schema validation and token cost profiling. Caught 4 regressions pre-deploy.
    • Diagnosed a production bug where workflows resumed from stale checkpoints after human-in-the-loop decisions, tracing it via log analysis to per-node dataset path tracking that didn't update correctly; fixed it by making state updates synchronous after every step.
    PythonLangGraphscikit-learnXGBoostFastAPITerraformReactLangSmithDeepEvalDockerAWS ECS, ECR, S3, SQS/DLQ, ALB, IAM, CloudWatch, Secrets Manager
  2. Sep 2026 - Present

    Boston, MA

    Teaching Assistant · CS1800 Discrete Structures · Northeastern University

    TA for a ~300-student undergraduate discrete structures course.

    • Sep 2025 - Dec 2025

      Boston, MA

      Teaching Assistant · CS3000 Algorithms and Data · Northeastern University

      TA for a ~400-student undergraduate algorithms course covering sorting, searching, graph algorithms, dynamic programming, linear programming and computational complexity.

      • Held weekly office hours, helping students work through algorithmic problem-solving and assignment debugging.
      • Graded assignments and exams for a ~400-student class, maintaining timely feedback and consistent evaluation standards.
    • May 2025 - Aug 2025

      Remote

      AI Research Intern · MySellerCentral

      Retrieval and guardrail work on a live seller-listing pipeline handling tens of thousands of listings a month.

      • Built a hybrid RAG pipeline (FAISS, sentence-transformers, LangChain, GPT-4o) that lifted HSN code classification accuracy from 72% to 94% while cutting inference cost per classification roughly in half.
      • Shipped a multimodal LLM-as-a-judge validation pass with targeted regeneration, keeping listings factually grounded in seller input. Auto-approval rates rose 12% and human review overhead fell.
      • Implemented prompt-level PII guardrails protecting 30K+ monthly listings, ensuring compliance with data protection policies; deployed as a Docker microservice on AWS Lambda with GitHub Actions CI/CD.
      PythonFAISSLangChainHuggingFace sentence-transformersOpenAIAWS LambdaDockerGitHub Actions
    • May 2023 - Jul 2023

      Pune, India

      Software Engineering Intern · Hoonartek

      Built CostSentry, a cloud cost governance platform for Snowflake users.

      • Cut manual cost tracking by 70% and improved spend oversight across 1500+ enterprise accounts.
      • Optimized SQL pipelines against Snowflake Data Cloud, dropping query latency from ~11s to 5s to make the cost dashboards near real-time.
      PythonSQLHTMLTailwind CSSSnowflakeStreamlit

    02Projects

    5 of 5

    Warrant

    Multi-agent research system

    2026

    A five-agent LangGraph pipeline that takes a research question, plans an investigation, gathers evidence from the live web and a private corpus, fact-checks itself, and returns a fully cited report.

    Citation accuracy
    100%
    Faithfulness
    95.9%

    RAGAS, 16-item golden set

    API cost vs. baseline
    −38%
    LangGraphTypeScriptReactPostgreSQLpgvectorFastAPI+5

    Read the write-up

    Warrant write-up

    Featherweight

    QLoRA fine-tune + serving benchmark

    2026

    A QLoRA fine-tune turning Llama-3.1-8B into a function-calling specialist that beats GPT-4o on the Berkeley Function-Calling Leaderboard, then a serving benchmark measuring what that specialization actually costs.

    BFCL V4 non-live AST
    43.15%89.44%

    GPT-4o: 87.50%

    Malformed calls
    9.35%0.40%

    23× reduction

    Cost / 1K calls
    $0.083

    GPT-4o: $1.347

    Llama-3.1-8BUnslothvLLMHuggingFaceQLoRAPEFT+4

    Read the write-up

    Featherweight write-up

    Switchyard

    LLM gateway

    2026

    A provider-agnostic reverse proxy exposing one stable OpenAI-compatible API on the front and routing to heterogeneous providers on the back, with policy-based routing, circuit breakers, cross-provider fallback, per-tenant rate limiting and a semantic cache.

    Cache hit rate
    35.2%

    at 40% duplicate rate

    Cost reduction
    34.7%
    p50 latency reduction
    32.0%
    FastAPIRedisFAISSDocker ComposeGrafanaPrometheus+3

    Read the write-up

    Switchyard write-up

    Tearsheet

    MCP server

    2026

    An MCP server that gives an LLM client a working set of quantitative finance tools (prices, fundamentals, ratios, technical indicators, strategy backtests and rendered charts) as callable functions.

    Tools exposed
    14
    Transport
    stdio MCP
    Backtest metrics
    4

    return, Sharpe, drawdown, win rate

    PythonMCP SDKyfinancepandasmatplotlibuv+2

    Read the write-up

    Tearsheet write-up

    Three-Player Hexagonal Othello

    Reinforcement learning · course project

    2025

    A three-player Othello variant on a hexagonal board, plus a tabular Q-learning agent trained over 100K episodes to play it. Team of four; I built the RL agent with one teammate.

    Win rate
    55%

    40 test games · 33.3% three-way baseline

    Training episodes
    100K
    Avg reward
    −1100−500
    PythonNumPySciPy sparseQ-learningTkinter

    Read the write-up

    Three-Player Hexagonal Othello write-up

    03Stack

    LLM & Agents

    LangGraphLangChainOpenAIAnthropicvLLMHuggingFacePEFT / QLoRAUnslothMCPRAG

    Evaluation

    LangSmithDeepEvalRAGASBFCL

    ML

    PyTorchTensorFlowscikit-learnXGBoostNumPyPandasScipyMatplotlibMLflow

    Serving & Infra

    FastAPIPydanticDockerTerraformGitHubGitHub ActionsRedisPrometheusGrafana

    AWS

    ECSLambdaBedrockS3SQSIAMALBCloudWatchECRSecrets Manager

    Databases & Vector Stores

    PostgreSQLMySQLMongoDBpgvectorFAISSChromaDB

    Languages

    PythonTypeScriptJavaSQL

    Frontend

    ReactNext.jsTailwind CSS

    Unit Testing

    PytestJUnit

    04Education

    • Sep 2024 - Dec 2026

      Boston, MA

      MS, Computer Science

      Northeastern University · Khoury College of Computer Sciences

      GPA 4.0 / 4.0

      Coursework: Foundations of Artificial Intelligence, Foundations for Generative AI, Machine Learning, MLOps, Fundamentals of Cloud Computing, Algorithms, Programming Design Paradigm, Database Management Systems

    • Aug 2020 - May 2024

      Pune, India

      BTech, Electronics & Telecommunication Engineering (Minor in Computer Science)

      College of Engineering Pune

      CGPA 8.98 / 10

      Coursework: Linear Algebra, Calculus, Probability and Statistics, Data Structures and Algorithms, Object-Oriented Programming, Web Technologies, Deep Learning, Natural Language Processing

    05Contact

    Open to full-time AI/ML and SWE roles across the US, from Dec 2026.

    The fastest way to reach me is email. Happy to talk through any of the projects above in more detail, or share a resume on request.