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I’m Nadeem Chaudhary, a full stack software engineer based in Berlin with 4+ years of experience building production-grade microservices and distributed systems. I enjoy working end-to-end across React and TypeScript frontends, Node.js backends, and SQL/NoSQL databases, with a strong focus on reliability, performance, and scalable architecture. In my recent work, I’ve designed PostgreSQL architectures (including high availability replication and query optimization), built secure payment transaction history features, and developed event-driven pipelines with Kafka. I also build internal AI-enabled solutions—such as an IT knowledge retrieval chatbot—using tools like Microsoft Copilot Studio, while leveraging Claude Code to accelerate development, debugging, and unit testing with high coverage.…I’m Nadeem Chaudhary, a full stack software engineer based in Berlin with 4+ years of experience building production-grade microservices and distributed systems. I enjoy working end-to-end across React and TypeScript frontends, Node.js backends, and SQL/NoSQL databases, with a strong focus on reliability, performance, and scalable architecture. In my recent work, I’ve designed PostgreSQL architectures (including high availability replication and query optimization), built secure payment transaction history features, and developed event-driven pipelines with Kafka. I also build internal AI-enabled solutions—such as an IT knowledge retrieval chatbot—using tools like Microsoft Copilot Studio, while leveraging Claude Code to accelerate development, debugging, and unit testing with high coverage.

Nadeem Chaudhary

Software Engineer, Full Stack Developer, Back-End Developer, +2

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I’m Nadeem Chaudhary, a full stack software engineer based in Berlin with 4+ years of experience building production-grade microservices and distributed systems. I enjoy working end-to-end across React and TypeScript frontends, Node.js backends, and SQL/NoSQL databases, with a strong focus on reliability, performance, and scalable architecture. In my recent work, I’ve designed PostgreSQL architectures (including high availability replication and query optimization), built secure payment transaction history features, and developed event-driven pipelines with Kafka. I also build internal AI-enabled solutions—such as an IT knowledge retrieval chatbot—using tools like Microsoft Copilot Studio, while leveraging Claude Code to accelerate development, debugging, and unit testing with high coverage.…I’m Nadeem Chaudhary, a full stack software engineer based in Berlin with 4+ years of experience building production-grade microservices and distributed systems. I enjoy working end-to-end across React and TypeScript frontends, Node.js backends, and SQL/NoSQL databases, with a strong focus on reliability, performance, and scalable architecture. In my recent work, I’ve designed PostgreSQL architectures (including high availability replication and query optimization), built secure payment transaction history features, and developed event-driven pipelines with Kafka. I also build internal AI-enabled solutions—such as an IT knowledge retrieval chatbot—using tools like Microsoft Copilot Studio, while leveraging Claude Code to accelerate development, debugging, and unit testing with high coverage.

Available to hire

I’m Nadeem Chaudhary, a full stack software engineer based in Berlin with 4+ years of experience building production-grade microservices and distributed systems. I enjoy working end-to-end across React and TypeScript frontends, Node.js backends, and SQL/NoSQL databases, with a strong focus on reliability, performance, and scalable architecture.

In my recent work, I’ve designed PostgreSQL architectures (including high availability replication and query optimization), built secure payment transaction history features, and developed event-driven pipelines with Kafka. I also build internal AI-enabled solutions—such as an IT knowledge retrieval chatbot—using tools like Microsoft Copilot Studio, while leveraging Claude Code to accelerate development, debugging, and unit testing with high coverage.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

German

Beginner

Work Experience

Software Engineer at Treasury Intelligence Solutions

December 1, 2025 - Present

Built an end-to-end payment transaction history feature using Node.js, React, and PostgreSQL, enabling secure client access to transaction records. Designed and owned PostgreSQL architecture with high availability replication, indexing strategies, and improved critical query performance by ~35–45%. Leveraged Claude Code to optimize code and create unit tests, achieving 95%+ test coverage. Developed an IT knowledge-retrieval chatbot with Microsoft Copilot Studio integrated with Confluence for 250+ employees, reducing manual support effort. Investigated and resolved 10+ high-priority defects to improve stability and reliability.

Backend Developer at NuSummit

November 1, 2023 - April 1, 2025

Collaborated with product owners, business analysts, and engineering teams in an Agile environment to define requirements, design solutions, and deliver features. Designed Kafka-based event streaming pipelines for energy generation data (~10,000/min) using partitioning and consumer groups for scalability. Owned and built backend microservices for an energy management platform (CRM) serving ~17K active users. Automated health insurance policy processing workflows with Node.js/JavaScript, contributing to churn reduction from ~10% to ~6%. Built and optimized health insurance policy search APIs in Node.js to reduce latency while maintaining ~90% Redis cache hit rate. Implemented CI/CD pipelines for Dockerized applications deployed on AWS EC2.

Full Stack Developer at CitiusTech

July 1, 2021 - November 1, 2023

Designed and developed a doctor’s team management module using Angular, Node.js, TypeScript, and PostgreSQL, including schema design and query optimization. Partnered with a tech lead on code reviews, backend architecture, and technical design decisions to improve scalability and maintainability of microservices. Built and maintained 15+ REST APIs for notifications, file uploads, authentication/authorization, and core workflow. Reduced medical image launch API latency from ~10 seconds to ~3 seconds by optimizing AWS EC2 auto-scaling configuration. Integrated AWS Parameter Store, CloudWatch, and Datadog for secure configuration management and operational visibility. Developed an in-app Jira ticket management solution using Angular/Node.js and MongoDB to help clients report production issues directly and reduce support effort.