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skpaik/README.md

👋 Hi, I'm Sudipta Kumar Paik

🚀 Senior Software Engineer | Backend & Cloud-Native Systems | AWS | TypeScript | Python | Java

🇩🇪 Based in Berlin, Germany · 🌍 Open to opportunities across Germany & Europe

I’m a Senior Software Engineer with 16+ years of professional experience building scalable, secure, and cloud-native software across backend systems, web applications, APIs, distributed systems, and DevOps.

My core expertise is in TypeScript/Node.js, NestJS, Python, Java, AWS, PostgreSQL, DynamoDB, Docker, and CI/CD, with a strong focus on clean architecture, automated testing, security, and maintainable software.

More recently, I’ve been incorporating AI-assisted development workflows into software engineering to improve development speed, code quality, testing, and productivity.


🧠 About Me

  • 💻 16+ years of professional software engineering experience
  • 🏗️ Specialized in backend engineering and cloud-native architecture
  • ☁️ Strong experience with AWS and serverless architectures
  • 🔷 Experienced with TypeScript, Node.js, NestJS, Python, and Java
  • 🧪 Strong focus on automated testing, TDD, and CI/CD
  • 🔐 Experience building secure and privacy-focused applications
  • 🤖 Exploring AI Engineering and AI-augmented software development
  • 👨‍🏫 Experience leading engineers, mentoring developers, and conducting technical interviews
  • 🌍 Experience across healthcare, fintech, travel, enterprise software, CMS, and AI/API platforms

🛠️ Technology Stack

Backend

TypeScript Node.js NestJS Python FastAPI Django Java Spring Boot

Frontend

React Next.js Vue.js React Native Tailwind CSS

Cloud & DevOps

AWS Docker Kubernetes Terraform GitHub Actions

AWS: S3 · Lambda · Cognito · KMS · DynamoDB · Textract · SQS · EC2 · Fargate · CDK · Route 53 · Glue

Other: GCP · Firebase · Serverless Framework · CI/CD · Infrastructure as Code, Terraform

Databases & Infrastructure

PostgreSQL · MySQL · MongoDB · DynamoDB · Redis

Engineering & Development

REST APIs · GraphQL · Microservices · Serverless · TDD · Automated Testing · Git · GitHub · Docker · Agile · Clean Architecture · Design Patterns


💼 Professional Experience

🧩 Senior Backend Software Engineer — WallRound GmbH

November 2025 – Present · Berlin, Germany · On-site

Working on backend systems for a cloud-based retrofit platform.

  • Developing scalable backend services using TypeScript and NestJS
  • Designing and implementing REST APIs and backend business logic
  • Working with cloud-native architecture and modern software engineering practices
  • Contributing to system design, testing, debugging, and production-quality software
  • Collaborating with cross-functional engineering teams

🧩 Senior Software Engineer — Techjays

May 2024 – October 2025 · Remote

Worked on secure, scalable software platforms and API infrastructure.

  • Built backend systems using NestJS, TypeScript, AWS, DynamoDB, and serverless technologies
  • Worked extensively with AWS KMS and Cognito for security and authentication
  • Core contributor to PolyAPI, working across backend, frontend, CLI, and NPM packages
  • Built and maintained GitHub Actions CI/CD pipelines

🏗️ Java / AWS Developer — TBSCG

June 2021 – April 2024 · Remote

Worked on enterprise applications and cloud-based systems.

  • Migrated enterprise applications to Magnolia CMS
  • Developed backend services using Java, Python, Flask, and AWS
  • Worked with AWS Lambda, Fargate, and cloud-native infrastructure

🚀 Tech Lead — W3 Engineers Ltd.

January 2015 – May 2021

Led engineering initiatives across multiple web and cloud projects.

  • Led migration of 18 PHP websites to Python-based infrastructure
  • Designed and optimized AWS infrastructure
  • Led development teams and technical initiatives
  • Mentored junior and mid-level engineers
  • Introduced engineering best practices around testing, documentation, code quality, and architecture
  • Worked across backend, frontend, DevOps, and cloud infrastructure

🧪 Selected Projects

🔷 Wallround

API & Microservice Integration Platform

wallround.app

A platform designed to simplify API and microservice integration for modern enterprises.

Technology:

NestJS · TypeScript · Postgres


🔷 PolyAPI

API & Microservice Integration Platform

polyapi.io

A platform designed to simplify API and microservice integration for modern enterprises.

Technology:

NestJS · Next.js · TypeScript · Java · Python · GitHub Actions

Contributed across:

  • Backend services
  • Frontend applications
  • CLI tooling
  • NPM packages
  • CI/CD automation
  • Testing and developer tooling

🌐 Enterprise & Global Platforms

Worked on large-scale websites and backend systems for organizations including:

  • Bobcat
  • Idorsia
  • RentByOwner

Technology:

Magnolia CMS · Python · Flask · Vue.js · AWS Lambda · AWS Fargate


I’m particularly interested in serverless architectures, distributed systems, event-driven systems, infrastructure automation, and scalable backend design.


🤖 AI & Modern Engineering

I’m actively exploring the intersection of AI and software engineering.

Current areas of interest include:

  • AI-assisted software development
  • Local LLMs and coding models
  • AI Engineering
  • LLM-powered developer tools
  • AI-assisted code review and testing
  • Developer productivity automation
  • RAG and AI application architectures
  • Cloud-based AI services

I use AI tools as an engineering accelerator while maintaining a strong focus on code quality, architecture, testing, security, and maintainability.


🧑‍🏫 Leadership & Mentoring

Throughout my career, I have:

  • 👥 Led software engineering teams
  • 🧭 Driven architecture and migration projects
  • 🧑‍💻 Mentored junior and mid-level developers
  • 🎯 Conducted technical interviews
  • 🔍 Performed code reviews
  • 🚀 Improved CI/CD and development workflows
  • 📚 Promoted clean code and engineering best practices
  • 🏗️ Led large-scale modernization and migration initiatives

📜 Certification

AWS Certified Developer – Associate

Issued: February 2019

View Credential


🌱 Currently Learning

I'm continuously expanding my engineering skill set, currently focusing on:

  • Spring Boot — Java microservices and backend architecture
  • 📱 React Native / Expo — cross-platform mobile development
  • ☸️ Kubernetes — container orchestration and scalable infrastructure
  • 🤖 AI Engineering — building production-ready AI-powered applications

📈 GitHub Activity

GitHub Stats

GitHub Streak

Top Languages


📫 Let's Connect

📧 Email: sdiptapaik@gmail.com

💼 LinkedIn: linkedin.com/in/skpaik

💻 GitHub: github.com/skpaik

🐦 X / Twitter: @skpaik


🤝 Open to Collaboration

I'm interested in collaborating on:

Open Source · Backend Engineering · Cloud Architecture · AWS · AI Engineering · Developer Tools · Distributed Systems

If you're working on something interesting, feel free to reach out.


Build scalable systems. Write clean code. Keep learning. 🚀

Pinned Loading

  1. today-i-learn today-i-learn Public

    The record book, of every day, what I learn

    Shell 1 4

  2. flask-key-value flask-key-value Public

    Python 1

  3. skpaik.github.io skpaik.github.io Public

    Sudipta's Personal Page

    JavaScript 1

  4. django-starter django-starter Public

    Shell

  5. portfolio portfolio Public template

    TypeScript