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Priyadarshni Sundararajan

Software Engineer | Full-Stack Development, Backend Systems & Applied AI

About

Software Engineer spanning enterprise application modernization, backend systems, cloud delivery, and applied AI. Builds Angular/.NET applications, Java/Spring Boot services, and Python analytics tools, with experience in SQL optimization, asynchronous processing, container orchestration, and automated testing. Combines full-stack delivery with hands-on work in multi-LLM applications, retrieval-augmented generation, and computer vision.

Experience

ADP (Automatic Data Processing, Inc.)Mar 2026 – Present

Software Engineer

Re-engineered legacy ColdFusion workflows into Angular/.NET applications with REST APIs, Entity Framework data access, and automated tests, replacing legacy implementations with a testable application stack.
Automated daily data migration and processing with scheduled background jobs, replacing manual execution with recurring workflows.
Architected an internal analytics tool with a hierarchical GPT/LLaMA architecture to route natural-language requests across SQL, enterprise documents, and Databricks, bringing multiple investigation sources into one workflow.

ColdFusion · Angular · C# · .NET · Entity Framework · Hangfire · SQL · Python · OpenAI GPT · LLaMA · Databricks Genie · Unity Catalog

CrowdDoingJul 2025 – Mar 2026

Full-Stack Software Engineer

Built proximity-ranked search APIs for nearby parks, reducing location lookup latency by 15% while returning geographically relevant results.
Implemented request/response caching with time-to-live expiration to reuse frequent location lookups and reduce redundant API processing.

Node.js · Express.js

Virdhi Tech LabDec 2021 – Dec 2023

Full-Stack Software Engineer

Accelerated multi-API data retrieval by 40% by optimizing SQL joins, adding indexes and Redis caching, and pre-aggregating frequently requested data.
Reduced frontend bundle size by 35% through code splitting and lazy loading, reducing the amount of application code loaded by the client.

SQL · Redis

Sirius Computer SolutionsMay 2021 – Nov 2021

Full-Stack Software Engineer

Reduced API response times by approximately 30% through PostgreSQL query tuning, indexing, pagination, and caching.
Built Java services with DTO, service, and repository layers and centralized exception handling, improving maintainability and reducing runtime errors.

PostgreSQL · SQL · Java · Spring Boot

Znifa TechnologiesFeb 2021 – Apr 2021

Full-Stack Software Engineer

Reduced repeated UI development effort by approximately 20% by building reusable components and improving frontend architecture across feature modules.

Projects

AI-Powered Scientific Literature Question Answering

Built a retrieval-augmented question-answering system that combines scientific literature with language models to produce research-context-aware responses.

PythonOpenAI GPTLLaMA

Real-Time Sign Language Recognition

Engineered a real-time sign language recognition system with an API-based inference interface, achieving 90% accuracy through optimized computer vision models.

PythonPyTorchTensorFlowFastAPI

Skills

Languages

C#JavaPythonTypeScriptJavaScriptSQLPHPC

Frontend

AngularReactNext.jsReduxHTML5CSS3Material UIBootstrapjQuery

Backend & APIs

.NETEntity FrameworkHangfireSpring BootNode.jsExpress.jsFastAPIFlaskLaravelREST APIsGraphQLMicroservicesKafkaSocket.io

Data

SQL ServerPostgreSQLMySQLMongoDBRedisDynamoDBOracleRelational Database DesignSQL Query OptimizationIndexingStored ProceduresData MigrationDatabricks GenieUnity Catalog

Cloud & DevOps

AWSEC2S3RDSVPCDockerKubernetesJenkinsCI/CDGit

AI / ML

OpenAI GPTLLaMAMulti-LLM ApplicationsLLM OrchestrationRetrieval-Augmented Generation (RAG)Natural Language AnalyticsPyTorchTensorFlowComputer VisionModel EvaluationMLOps

Engineering

Automated TestingUnit TestingIntegration TestingAPI SecurityJWTRole-Based Access Control (RBAC)CachingPerformance OptimizationSystem DesignAgile/ScrumCode ReviewsJIRA

Education

University at Buffalo - SUNY

Master's in Computer Science (AI/ML Specialization)

Jan 2024 · May 2025 · GPA 3.7 / 4.0

Anna University, Chennai

Bachelor's in Information Technology

Aug 2017 · May 2021 · GPA 8.43 / 10

Contact

Say hello

Always happy to talk shop, backend systems, or applied AI.