Looking for a job

Arjun Sonik

@arjunsonik

Message

I build cloud-native full-stack and AI solutions for healthcare, financial services, and enterprise platforms.

India

Message

What I'm looking for

I'm looking to lead full-stack, cloud-native, and AI solution delivery, building production-grade RAG, LLM, and enterprise platforms while guiding teams through architecture, Agile execution, and reliable releases.

At R Systems International, I lead end-to-end delivery of enterprise applications using NestJS, Node.js, Angular, TypeScript, and AWS, from architecture and code reviews through production support.

I've built AI-powered enterprise features with OpenAI, Anthropic, LangChain, and custom RAG pipelines, enabling semantic search, document Q&A, and workflow automation. My work includes vector search with Pinecone and pgvector, prompt orchestration, and serverless inference workflows on AWS.

Previously, I delivered Clinical Genomics Workspace features at PierianDx, financial-platform work for BlackRock through ITC Infotech, and healthcare and fitness applications at SmartData Enterprises.

Across 11+ years, I've built web applications, ERP systems, microservices, APIs, CI/CD pipelines, and cloud deployments for healthcare, banking, education, logistics, and enterprise products. I also lead Agile planning, technical design, and mentoring for junior developers.

Experience

Work history, roles, and key accomplishments

Current

Lead Engineer

Current

R Systems International

Apr 2023 - Present (3 years 5 months)

Led end-to-end development of enterprise applications using NestJS, Node.js, Angular, and TypeScript, owning architecture, delivery, code reviews, and production support. Architected AI-powered features with OpenAI/Anthropic APIs, LangChain, and RAG pipelines, and implemented CI/CD pipelines for automated deployment.

NestJS Node Angular TypeScript Microservices RBAC OpenAI Anthropic Lang Chain RAG Pinecone Pgvector AWS Lambda S3 API Gateway Cloudwatch Gitlab Jenkins Azure DevOps Docker Kubernetes RxJS Agile Scrum

Senior Software Engineer

PierianDx

May 2022 - Mar 2023 (10 months)

Delivered full-stack features for Clinical Genomics Workspace using MERN stack in a regulated healthcare environment. Implemented Webpack module federation for micro-frontends and deployed cloud infrastructure on AWS.

MongoDB Express React Webpack Module Federation AWS Healthcare

Associate IT Consultant

ITC Infotech

Dec 2021 - May 2022 (5 months)

Contributed to Invest App and financial platform deliverables for a global asset management client. Implemented event-driven architecture patterns using Apache Kafka and deployed applications on AWS and Azure.

Kafka AWS Azure Docker Kubernetes Design Patterns Agile

Senior Associate Engineer II

SmartData Enterprises

Jan 2021 - Dec 2021 (11 months)

Built full-stack healthcare and fitness applications using Node.js, Vue.js, React.js, MongoDB, and PostgreSQL with OAuth-based authentication. Developed REST APIs and microservices with Docker-based deployment pipelines on AWS and GCP.

Node.Js Development Vue.Js React MongoDB PostgreSQL OAuth REST APIs Microservices Docker AWS GCP CI CD

Assistant Software Developer

Lovely Professional University

Jun 2015 - Dec 2020 (5 years 6 months)

Developed and maintained 15+ web applications and ERP systems for healthcare, education, banking, and logistics domains using Angular, Node.js, and .NET. Designed system architectures, REST APIs, and CI/CD pipelines with automated testing and deployment workflows.

Angular Node .NET REST APIs Jenkins Azure DevOps CI CD Testing Automation