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Hi, I am Sen

Debasish Sen

DevOps Engineer at Tata Consultancy Services

I’m a System Administrator turned DevOps Engineer with five years of experience. From fine-tuning IT systems to building smoother DevOps workflows, I get a lot of satisfaction from tackling challenges and delivering impactful results. I’m always ready to learn something new, adapt to change, and take on problems head-on—it’s what keeps me excited about this field. If you’re looking for someone who brings both technical skills and a real passion for making things better, I’d be thrilled to connect and discuss how I can contribute to your team’s success.

Red Hat Certified System Administrator (RHCSA)
Microsoft Certified: Azure Administrator Associate (AZ-104)
Team Work
Hard Working
Quick learner

Skills

Experiences

1
Tata Consultancy Services

Jan 2020 - Present

Kolkata, India

Tata Consultancy Services (TCS) is a global leader in IT services and consulting, known for innovation and digital transformation solutions

DevOps Engineer

Nov 2022 - Present

Responsibilities:
  • Developed and maintained CI pipelines using Jenkins/GitHub Actions. Integrated Maven for builds, SonarQube for code quality, Trivy for security scans, and Nexus for artifact storage.
  • Automated deployments to Kubernetes clusters through ArgoCD, increasing deployment efficiency and reliability.
  • Provisioned and managed multi-tier infrastructure on AWS using Terraform and Ansible, reducing setup time from hours to under 15 minutes and improving scalability.
  • Designed end-to-end CI/CD pipeline for on-demand k8s/k3s cluster provisioning, which helped reduce infrastructure costs for development environments.
System Administrator

Jan 2020 - Oct 2022

Responsibilities:
  • Deployed rootless containers using Docker/Podman, adhering to industry best practices for security.
  • Configured and managed reverse proxies like HAProxy and Nginx, including backend mapping, setting up SSL/TLS termination, etc.
  • Automated configuration and patching of over 30 RHEL servers with Ansible, significantly reducing manual work.
  • Administered Active Directory and Entra ID, automating tasks such as application registration and identity management processes.
  • Created PowerShell and Shell scripts to automate routine tasks, improving efficiency across various operations.

Education
University of Calcutta
2016-2019
B.Sc. in Computer Science (Honours)
Calclutta Public School
2014-2016
Indian School Certificate (ISC)
Calclutta Public School
2004-2014
Indian Certificate of Secondary Education (ICSE)

Featured Posts

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Self-Hosting Pi-hole with Unbound for Enhanced DNS Privacy

Self-Hosting Pi-hole with Unbound for Enhanced DNS Privacy If you’ve ever been annoyed by constant ads or felt uneasy about who’s monitoring your internet activity, setting up Pi-hole with Unbound on your home network is a game-changer. I can say this is one of the most effective ways to control and enhance privacy in your browsing experience. This guide will walk you through setting up Pi-hole, an ad-blocking DNS server, and pairing it with Unbound to make a fully recursive and self-contained DNS resolver.

Tuesday, August 27, 2024 | 4 minutes Read
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Setting Up NGINX as a Reverse Proxy for Self-Hosted Applications

Setting Up NGINX as a Reverse Proxy for Self-Hosted Applications When self-hosting applications on a single server, managing ports and access points can become a complex task. NGINX, a lightweight yet powerful web server, is perfect for acting as a reverse proxy to direct traffic to the correct applications and streamline port management. Here’s a guide, based on my years in IT, that simplifies using NGINX to host multiple services.

Tuesday, September 17, 2024 | 4 minutes Read

Recent Posts

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Securing NGINX Traffic with SSL Using Certbot

Securing NGINX Traffic with SSL Using Certbot When it comes to securing web traffic, implementing SSL (Secure Sockets Layer) is one of the most critical steps. In this guide, I’ll walk you through securing your NGINX server using free SSL certificates from Certbot, a popular tool that makes SSL management simple. Prerequisites Before starting, ensure you have: A Linux server with sudo access. A domain name pointing to your server’s IP address. NGINX installed on your server. Note: This tutorial assumes you’re working with a Debian-based Linux distribution like Ubuntu.

Friday, October 25, 2024 | 3 minutes Read
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Getting Started with Hugging Face: Creating AI Models in Python

Getting Started with Hugging Face: Creating AI Models in Python Artificial Intelligence (AI) has become a big part of our lives, and tools like Hugging Face make it easier than ever to harness the power of AI models with Python. Whether you’re interested in natural language processing, image recognition, or custom AI solutions, Hugging Face offers a simple way to get started. I’ve found Hugging Face to be a great platform for beginners and pros alike, and I’m excited to share a quick guide on how to use it.

Thursday, October 10, 2024 | 3 minutes Read
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Automating Development Testing with k3s and GitHub Actions

Automating Development Testing with k3s and GitHub Actions In today’s fast-paced development environment, automated testing is crucial for maintaining code quality and ensuring rapid deployment. This guide will walk you through setting up an automated testing pipeline using k3s (a lightweight Kubernetes distribution) and GitHub Actions. Prerequisites Before we begin, make sure you have: A GitHub account and repository Basic knowledge of Docker and Kubernetes concepts A server or VM for hosting k3s SSH access to your server Setting Up k3s First, let’s install k3s on your server. k3s is perfect for CI/CD environments due to its lightweight nature and easy setup.

Tuesday, October 1, 2024 | 4 minutes Read