MRINAL KANTI GHOSH
Malda
Summary
Senior DevOps / Infrastructure Engineer with 7+ years of experience designing, automating, and operating cloud-native platforms across AWS and GCP. Expertise in Kubernetes, CI/CD, infrastructure as code (Terraform), and observability. Proven track record in building scalable, secure, and developer-friendly platforms, with strong experience supporting data platforms and distributed systems.
Overview
8
8
years of professional experience
1
1
Certificate
Work History
Senior Infrastructure Consultant
Thoughtworks
Bangalore
03.2023 - Current
- Currently analysing and implementing multi-tenant SAAS authentication architecture using AWS Cognito.
- Designed and implemented a cost-optimized, multi-region Disaster Recovery (DR) solution for databases, enabling automated region failover and high availability. Built intelligent failure detection to classify outage scenarios and trigger automated primary promotion to a secondary region, with optional manual override. Leveraged Terraform for multi-region infrastructure provisioning, AWS Lambda for failover orchestration, and GitHub Actions for automated execution—significantly improving resilience while minimizing operational cost.
- Enhanced an internal access management platform that enforces strict RBAC for databases, Kafka, and Redis. Introduced state-aware configuration diffing using Helm and Bash, reducing Kafka permission provisioning time (topic-level producer/consumer access) from ~20 minutes to under 1 minute—significantly improving operational efficiency and developer turnaround time.
- Designed and implemented a cost-efficient archival solution for MongoDB, automatically offloading data older than a configurable threshold (e.g., 60 days) to Amazon S3 in chunked batches. Built with fault-tolerant check pointing to ensure resumable uploads from the last successful state, reducing storage costs while improving reliability and data lifecycle management.
- Designed and implemented a production-grade Confluent Kafka platform from the ground up, leveraging Terraform for infrastructure provisioning and Ansible for configuration management. Strengthened security by enabling SCRAM-based authentication, enforcing fine-grained access control through ACLs, and securing communication with TLS/SSL encryption.
- Design and implement observability solutions utilizing OpenTelemetry to ensure high reliability and performance across platform services.
- Automate secret management and dynamic application configuration retrieval utilizing HashiCorp Vault and Consul.
- Lead a seamless migration of 25,000 Docker images to Artifact Registry, updating CI/CD templates for compatibility and reducing deployment bottlenecks.
- Improve developer experience and velocity by proactively identifying blockers and building automation to eliminate manual toil at scale.
- Streamline the software development lifecycle by designing multi-environment CI/CD pipelines utilizing Jenkins and ArgoCD, supporting trunk-based development and secure image deployment.
- Provide technical leadership for infrastructure operations, designing and supporting robust multi-cloud systems (GCP/AWS) with parity across single and multi-tenant environments.
- Leverage declarative and reusable Infrastructure as Code (Terraform) and Kubernetes to provision secure, self-service infrastructure templates, integrating IAM policies to enforce least-privilege for BigQuery and GCS access.
- Consolidate 40 GCP composers into 6 modular, shared composers to improve code maintainability, optimize cloud spend, and promote cross-squad code sharing.
DevOps Engineer 2
Zeta
Bangalore
10.2021 - 03.2023
- Managed and scaled production-grade Kubernetes infrastructure supporting critical business applications.
- Designed and implemented custom autoscaling using Prometheus Adapter, enabling scaling based on business metrics.
- Built internal RBAC tooling on top of HashiCorp Vault, improving access control and security posture.
- Led implementation of progressive delivery (canary deployments) using Argo Rollouts.
- Integrated Istio service mesh and Kong API Gateway to manage traffic routing, security, and observability.
- Implemented log-based alerting using ElastAlert, improving incident detection and response time.
- Automated JVM heap dump collection workflows, reducing debugging time during production incidents.
- Participated in on-call rotations, improving system reliability and incident response.
Product Engineer DevOps
Rapido
Bangalore
04.2021 - 10.2021
- Operated and scaled a Kubernetes-based platform powering backend and data services, improving system reliability and deployment consistency across environments.
- Implemented observability using Prometheus and Alertmanager, enabling proactive monitoring of data pipelines and reducing incident detection time.
- Developed Golang-based internal tools to centralize configuration and access management, enhance governance, reduce manual overhead and delegating responsibilities to development teams.
- Introduced canary deployments and progressive delivery strategies, minimizing release risk and improving deployment success rates by around 75%.
Infrastructure Consultant
ThoughtWorks
Gurgaon
08.2018 - 04.2021
- Led production infrastructure operations and incident management for microservice based applications, reducing downtime and improving service reliability.
- Co-led migration from on-premises to AWS, enhancing scalability, availability, and operational efficiency.
- Designed and executed infrastructure fire drills and resilience tests, strengthening system fault tolerance and recovery readiness.
- Implemented robust network security controls and standardized deployment practices, improving overall security posture.
- Drove Kubernetes capability development across 50+ engineers, accelerating adoption and improving platform maturity across team.
Education
B.Tech - Information Technology
Meghnad Saha Institute Of Technology
Kolkata, West Bengal, India01-2018
Higher Secondary -
Ramakrishna Mission Vivekananda Vidyamandir
Malda, West Bengal, India01-2014
Skills
- Terraform
- AWS
- Docker and Kubernetes
- Python/Golang
- Jenkins/ArgoCD/Github Actions
- Observability
- Disaster Recovery Setup
- Automations via Bash Scripting/Python
Certification
- CKA: Certified Kubernetes Administrator: LF-mppftqkw40
- CKAD: Certified Kubernetes Application Developer: LF-bjudj2y9t
- CKS: Certified Kubernetes Security Specialist: LF-2tyn5tvzl2
Timeline
Senior Infrastructure Consultant
Thoughtworks
03.2023 - Current
DevOps Engineer 2
Zeta
10.2021 - 03.2023
Product Engineer DevOps
Rapido
04.2021 - 10.2021
Infrastructure Consultant
ThoughtWorks
08.2018 - 04.2021
B.Tech - Information Technology
Meghnad Saha Institute Of Technology
Higher Secondary -
Ramakrishna Mission Vivekananda Vidyamandir