Muntashir I.

Experience

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  Contessa Solutions & Consultants Ltd.

  Mar 2015 - Feb 2016

  Analyst Programmer

  - Collaborated with the product team to architect an accounting and payroll system.- Designed and upgraded CI/CD pipelines, increasing overall efficiency by 40% through faster code testing, enhanced security checks, and streamlined production deployments.- Architected software infrastructure in an in-house datacenter and maintained all production and development servers to provide seamless service to users.

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  CLOUDOFFICE

  Mar 2016 - Nov 2019

  Senior Software Engineer - Infrastructure Development

  - Developed and maintained 3 distinct self managed Kubernetes cluster in AWS using kubeadm and Kubeone tools- Developed cloud native microservice based architecture and Implemented different microservice based solutions using Java (Spring Boot) and Python.- Prepared manifest for deploying production workload in kubernetes cluster.- Delivered solution by writing proper CICD pipeline in jenkins in corporate with Spinnaker and Kubernetes deployment plugins in Jenkins.- Developed and managed standards for implementing SDLC process through the different teams all over the world.- Designed and implemented cloud infrastructure mostly using AWS EC2, ECS, S3, ELB and Digital Ocean.- Ensure quality software delivery by integrating production grade CI/CD pipeline and achieve zero downtime deployment.- Automate the entire infrastructure by implementing infrastructure as a code, by using Ansible.- Decreased deployment and release time 40% which increase the satisfaction.- Implemented monitoring stack using Grafana and Prometheus. Show less

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  Hishab

  Nov 2019 - Feb 2021

  DevOps Engineer

  - Manage and architect production infrastructure by utilizing multiple cross-region, cross-cloud Kubernetes clusters integrated with Istio service mesh, facilitating application and machine learning workloads in AWS and Google cloud environment, resulting in a 50% improvement in operational efficiency.- Implemented event-driven micro-service design patterns utilizing a highly available Apache Kafka cluster achieving a 40% increase in system responsiveness and reliability.- Developed and maintained CI/CD pipelines by adopting GitOps process, reducing software release times by 70% and improving overall code quality by 40%.- Consistently enhanced and optimized infrastructure and software architecture by assessing performance, aiming for high availability and fault tolerance through the implementation of automation, leading to a 60% reduction in system downtime across various cloud architectures.- Created numerous scripts and programs using Golang and Python to support infrastructure operations, ensuring smooth deployment by conducting research and evaluating technical specifications from the development and business teams, which eliminated 80% of manual intervention.- Assisted developers in developing and implementing various microservices while playing a pivotal role in fostering a DevSecOps culture among developers and operations teams, resulting in a 30% improvement in security compliance and a 40% reduction in integration issues. Show less

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  Voicebridge Gmbh

  Mar 2021 - Nov 2021

  Lead DevOps Engineer

  - Managed large Kubernetes clusters across multi-cloud environments (AWS, GCP) utilizing Istio service mesh for enhanced traffic management and security.- Administered AWS and GCP components including EKS, ECS, EC2 (Spot Fleet, ASG), Lambda, CloudWatch, DynamoDB, ELB, SQS, SNS, S3, API Gateway, RDS, Compute Engine, GKE, and Cloud Storage, all managed through Terraform.- Implemented a Kubernetes-based monitoring and logging architecture using Loki, Grafana, Mimir, Tempo, and Prometheus to ensure comprehensive observability.- Managed and optimized Kafka clusters to support event-driven architectures, utilizing components like Kafka Connect, ksqlDB, Kafka REST API, and Schema Registry for seamless operations within Kubernetes environments.- Designed and implemented a CI/CD pipeline for a Kubernetes-based microservices architecture by adopting a GitOps approach with Jenkins and ArgoCD, reducing deployment times by 60% and increasing overall system reliability by 30%.- Developed numerous APIs and automation scripts using Python and Golang, enhancing system functionality and automation.- Maintained thorough documentation for DevOps processes and procedures while regularly mentoring junior engineers, leading to a 65% reduction in production issues. Show less

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  MedStack

  Nov 2021 - Oct 2024

  Lead Site Reliability Engineer

  - Design and implement kubernetes-based infrastructure on Azure for the legacy system using Terraform, ensuring 100% service availability and improving production environment efficiency by 90% compared to the previous system. This resulted in increased uptime (99%), enhanced reliability, and a boost in yearly revenue.- Extensively leveraged Azure services, including AKS, Fleet Manager, Application Gateway with WAF, Key Vault, Blob Storage, Flexible DB Servers, EventGrid, and Log Analytics, to architect and maintain secure, scalable cloud infrastructure. Additionally, utilized AWS services such as EC2, S3, CloudFormation, Control Tower, DynamoDB, ECS, and RDS to manage and optimize multi-cloud environments, ensuring seamless integration, high availability, and performance across platforms.- Monitor overall system efficiency and implement comprehensive solutions using Loki, Grafana, Prometheus, and the OpenSearch stack to improve system uptime, reliability, and efficiency.- Implement CI/CD pipelines for various architectures using a GitOps approach with ArgoCD, Buildkite, and GitLab CI, reducing deployment times by 70%.- Architect and develop internal automation scripts, apis, plugins and kubernetes operators to fully automate cluster operations using Python and Golang, ensuring seamless support for a large number of workloads.- Participate in SRE on-call rotations to ensure 24/7 system availability and operational health, addressing and resolving emergent issues swiftly to maintain service continuity and performance standards. Additionally, design and conduct regular disaster recovery procedures to simulate emergency scenarios and ensure preparedness.- Prepare operational documentation, conduct training for production engineers, and create incident reports as needed. Show less