Khelender is available for hire

Khelender Sasan

Verified Expert in Engineering

Solutions Architect and Developer

Delhi, India

Toptal member since July 2, 2020

Expertise

Cloud Architecture AWS Cloud Linux Unix Perl C++Docker AWS Jira REST API Python DevOps MySQL PostgreSQL PHP AWS RDS Zoho Development

Bio

Khelender is an experienced solutions architect with a strong focus on cloud and IoT projects. His expertise includes DevOps and application and system design and implementation, including cloud applications, infra and performance evaluation, and application enhancements. Khelender has implemented complete DevOps and application solutions for several customers and masterfully implemented data and analytics to optimize projects and processes, enhancing overall client value.

Portfolio

An Indian Startup

Terraform, AWS Cloud Architecture, Grafana, InfluxDB, Amazon EC2, Security...

Richards LLC

Amazon Web Services (AWS), Amazon EC2, Node.js, Express.js, AWS Lambda...

An Indian Startup

Terraform, Amazon EC2, Amazon Route 53, AWS IAM, Amazon S3 (AWS S3)...

Experience

Linux - 20 years
C - 12 years
Solution Design - 12 years
Shell Scripting - 11 years
Java - 9 years
Amazon Web Services (AWS) - 8 years
Python - 7 years
Terraform - 4 years

Preferred Environment

Amazon Web Services (AWS), Python, Docker, Django, GitHub, Node.js, DevOps, Serverless, AWS Lambda, Go

The most amazing...

...thing I've done is architecting and setting up a complete DevOps environment with fault-tolerant and latency-aware deployment.

Work Experience

DevOps Consultant and Architect

2022 - 2023

An Indian Startup

Designed and implemented Amazon Machine Image (AMI) templates for custom Amazon EC2 that have pre-installed environment along with custom partitioning, launched through Terraform.
Conducted regular performance monitoring using Grafana and Amazon CloudWatch. Implemented custom data capture for monitoring license and infrastructure usage using InfluxDB.
Managed networking and security configurations with continuous assessment through event-based evaluations.
Automated custom Zoho components for company workflow.
Deployed Docker containers for various functionalities as needed, including DokuWiki, PostgreSQL, Grafana, and InfluxDB.

Technologies: Terraform, AWS Cloud Architecture, Grafana, InfluxDB, Amazon EC2, Security, Zoho, Docker, Amazon Web Services (AWS), Team Leadership, GitHub Actions, Amazon DynamoDB, REST APIs, System Architecture

Senior DevOps Engineer

2021 - 2023

Richards LLC

Automated infra deployment using Terraform. Deployed components included AWS Lambda, Amazon API Gateway, ALB, Amazon Relational Database Service (RDS), Amazon Aurora, Amazon CloudFront, AWS WAF, and AWS S3. Used AWS VPN subnets for NW architecture).
Implemented CI/CD pipeline handling through GitHub and later migrated that to GitLab-based deployment.
Implemented customized Terraform and CI/CD deployments, allowing multiple parallel test deployments–from five to 100. These deployments were launched at the click of a button and were optimized using ALB deployment.
Set up Grafana-based monitoring using an AWS data source.
Implemented latency-based routing to regional ALBs that acts as a fault-tolerant solution.
Developed cloud logging and monitoring of AWS infra using Amazon CloudWatch and New Relic.
Dockerized back-end environment using containers setup with Docker Compose and use of same Docker containers in AWS Lambda environment.

Technologies: Amazon Web Services (AWS), Amazon EC2, Node.js, Express.js, AWS Lambda, Salesforce Sales Cloud, Serverless, Amazon Cognito, Terraform, New Relic, GitLab CI/CD, CI/CD Pipelines, GitHub, Amazon S3 (AWS S3), AWS Certificate Manager, Amazon Route 53, AWS ALB, Amazon API Gateway, Amazon Elastic Container Service (ECS), Jira, Infrastructure as Code (IaC), PostgreSQL, Grafana, AWS DevOps, Amazon RDS, Amazon Virtual Private Cloud (VPC), Networking, AWS VPN, Containers, Bash, VPN, Load Balancers, AWS Fargate, Amazon CloudWatch, Linux, Shell Scripting, IP Networks, AWS Cloud Architecture, Cloud Architecture, AWS Command Line Interface (CLI), GitHub Actions, AWS IAM, API Gateways, Amazon CloudFront CDN, REST APIs, Security, Identity & Access Management (IAM), System Architecture

Cloud Architect and Consultant

2020 - 2023

An Indian Startup

Worked on a complete IT strategy and implementation. Consulted, designed, and executed the company's cloud and IT strategy. The primary cloud was set up on AWS.
Developed a networking and security strategy for customer-wise cloud deployment, ensuring seamless connectivity to the company's network, including license servers.
Automated deployment of cloud servers with all required software, connectivity, routing setup, and certificates.

Technologies: Terraform, Amazon EC2, Amazon Route 53, AWS IAM, Amazon S3 (AWS S3), AWS Certificate Manager, Encryption, Grafana, Docker, Networking, Infrastructure as Code (IaC), AWS DevOps, Architecture, Amazon Virtual Private Cloud (VPC), AWS ALB, AWS VPN, Containers, Bash, AWS CodeBuild, Linux, Shell Scripting, IP Networks, IT Networking, AWS Cloud Architecture, Cloud Architecture, AWS Command Line Interface (CLI), Kubernetes, Azure, Amazon Machine Images (AMI), REST APIs, Storage, Security, Identity & Access Management (IAM)

DevOps Consultant

2022 - 2022

SWS Technologies

Set up and deployed Python-based microservices in Azure Kubernetes environment.
Integrated with APIs from a finance market service provider.
Performed evaluation and enhanced functionality in Kubernetes environment.

Technologies: Kubernetes, Azure

Solution Architect

2022 - 2022

An Indian Startup

Implemented a complete back end for a diagnostics application in Go and Wails.
Abstracted layer implementation that allows for concurrent execution of protocol workflow, heart-beat, and fault detection logics over the Modbus protocol for multiple devices.
Developed a workflow implementation for streamlined, extensible, and optimized execution on the Modbus protocol. Implemented a protocol to handle software and hardware-related faults, timeouts, and errors.

Technologies: Go, Wails, Modbus Protocol, Make (formerly Integromat), React, JavaScript, Bash, Shell Scripting, AWS IAM

Cloud Architect

2021 - 2022

An Indian Startup

Handled the performance evaluation and optimization of an Azure Kubernetes-based deployment. Latency was improved around three times, shortening it from 10 to 3 seconds.
Set up the storage evaluation and introduction of NFS storage to increase system throughput.
Implemented the movement of an Azure resource deployment across accounts through Azure-provided tools with no downtime.

Technologies: Kubernetes, Azure, Storage, Performance, Linux, AWS Cloud Architecture, Cloud Architecture, AWS Command Line Interface (CLI), Encryption, Backup & Recovery

DevOps Consultant

2021 - 2021

Urbian

Conducted analysis of customer environments and provided Docker-related consulting.
Assessed a customer DevOps environment and provided workflow-related consulting.
Analyzed compute requirements and delivered consulting services.

Technologies: DevOps, Docker, Linux, Ubuntu, Deployment, Amazon Web Services (AWS), Containers, Cloud Architecture

AWS and Python Expert

2021 - 2021

Wildsense

Optimized execution of client setups using high-end EC2 machines and moved such execution to AWS Lambda and AWS Step Functions, reducing monthly cost by 70%-80% as algorithms were executed at specific time periods only during a week.
Ported a geographic information system (GIS) and data science algorithm codebase to containers to be run on the AWS Lambda platform.
Implemented AWS Step Functions for workflow integration.
Analyzed and selected suitable storage strategies for implementation on AWS.

Technologies: Amazon Web Services (AWS), Python, RabbitMQ, Infrastructure as Code (IaC), AWS DevOps, Containers, Shell Scripting, Cloud Architecture, AWS Command Line Interface (CLI), Terraform

AWS DevOps Architect

2021 - 2021

Prescient Devices

Developed an automated deployment architecture/setup that generates a base deployment followed by per-customer deployment of all relevant components and linking it with existing infrastructure. Enhanced the platform.
Built a base model of the existing setup and validation of a new deployment through a Terraform implementation.
Automated the setup completely, which involved launching per-customer infra setup from a simple web page. This interface allowed for multiple infra launches in parallel.

Technologies: Amazon Web Services (AWS), DevOps, CI/CD Pipelines, JavaScript, Node.js, Kubernetes, Docker, Amazon Elastic Container Service (ECS), Terraform, AWS ALB, Amazon Route 53, AWS Certificate Manager, Amazon EFS, Amazon Elastic Block Store (EBS), Domain DNS Setup, Amazon EC2, Ansible, MQTT, Amazon MQ, Distributed Systems, Infrastructure as Code (IaC), AWS DevOps, AWS NLB, Amazon Virtual Private Cloud (VPC), Networking, AWS VPN, Bash, VPN, Load Balancers, AWS Fargate, Amazon CloudWatch, Linux, Shell Scripting, IP Networks, IT Networking, AWS Cloud Architecture, Cloud Architecture, AWS Command Line Interface (CLI), Amazon Machine Images (AMI), Autoscaling, Storage, Identity & Access Management (IAM), Linux File Systems, System Architecture

Web Application Consultant and Developer

2020 - 2020

SWS Technologies

Developed a web application for managing COVID-19 testing exercises at the county level.
Created an application for scheduling, monitoring, and controlling COVID-19 tests for doctors, health support personnel, and diagnostics lab. The app processes diagnostic reports and manages intimation.
Developed an automated Git-based CI flow for testing and integration.
Enabled the localization of the product internationally so that the application may be customized for other locals.

Technologies: Laravel, PHP, Docker, GitLab, Amazon Web Services (AWS), AWS DevOps, MySQL, Full-stack, AWS Fargate, Amazon CloudWatch, Linux, Shell Scripting

Software Designer and Developer

2020 - 2020

SWS Technologies

Delivered an entire system packaged into a Docker compose environment, making changes and deployment seamless. The platform stack included Vue, LeafletJS, Django, and PostgreSQL.
Integrated with the Django REST framework and filters to enhance the API support for complete CRUD and filtering support.
Integrated Django asynchronous tasks and Redis queues for scalable background processing.

Technologies: Django, Python 3, Distributed Systems, PostgreSQL, Vue, Redis, Leaflet, Linux, Shell Scripting, IT Networking

Software Consultant and Architect

2019 - 2020

A Data Backup and Archival Firm in India

Designed and architected a dashboard for monitoring data backup and archival status at the organization level.
Designed and implemented contracts and microservice APIs for the extensible dashboard management software.
Demonstrated the implementation by integrating custom backup software APIs.

Technologies: Java 8, Microservices, Linux, C++, REST APIs, Storage, Linux File Systems

Solutions Architect

2016 - 2019

SWS Technologies

Developed a client solution in the automotive sector that involved capturing data from the vehicle's electronic control unit (ECU) using an Android app, local analytics, and pushing data to the AWS cloud for storage and further analytics.
Utilized threads and implementation of FSM for continuous and reliable data capture from a Bluetooth interface while pushing data to the server side using the secure MQTT protocol.
Implemented the server in AWS and used containers in MQTT and PHP Laravel, AWS Lambda, and Amazon RDS features to ensure seamless functionality.
Implemented NAS plugins, QNAP and FreeNAS, for a storage product that involved the usage of Docker containers.
Deployed a system component in Linux for communication over the serial interface with an embedded device, utilizing thread and synchronization primitives.

Technologies: Amazon Web Services (AWS), PHP, Laravel, Android, Java, Docker, DevOps, On-board Diagnostics II (OBD-II), Jira, Python, Internet of Things (IoT), Full-stack, Linux, C++, Shell Scripting, IP Networks

Senior Solutions Architect

2013 - 2016

NEC Technologies india

Nurtured a team in the cloud domain focusing on OpenStack and Docker containers.
Introduced DevOps to the product development teams. Provided technical leadership for the delivery of storage and virtualization of the product.
Managed the data analytics team. Introduced Agile practices and daily stand-ups to ensure smooth progress.

Technologies: Cloud, Storage, Technical Hiring, Source Code Review, Interviewing, Team Management, Project Management, Jira, C++, Team Leadership, Backup & Recovery, Linux File Systems, System Architecture

Solutions Architect

2001 - 2013

HCL Technologies

Set up the organization for cloud and virtualization. Spotted an opportunity for Dockerized containers and geared up the team for use in the QA domain. Delivered a paper presentation on the possibility of using containers in the QA domain.
Built, led, and guided a team for mobile application development from scratch.
Led a team to develop the Code Profiler for use in a mobile environment (J2ME). Used contemporary tools and technologies to handle constraints in the initial days of the mobile environment.
Oversaw a team of fresh data scientists while understanding the data science domain and gearing up data scientists for programming challenges.

Technologies: Docker, Docker Compose, Node.js, Amazon Web Services (AWS), Python, Django, CI/CD Pipelines, Perl, Project Management, Quality Auditing, C++, Unix, Team Leadership

Experience

Online Monitoring Solution for Automotive Vehicles

I created a solution for online monitoring and diagnostics of running automotive vehicles, which involved capturing automotive ECU data (over Bluetooth), local analytics, and secure communication over MQTT with the AWS cloud. Server implementation involved a containerized environment with a PHP Laravel-based server, MQTT broker, Lambda functions, and an RDS database. FSM and thread-based applications were enabled in the Android app, along with graph plotting (static and dynamic) and location-based processing.

Web Application for Managing COVID-19 Testing Exercise at the County Level

I developed a web-based app for a health agency.

The app involved the implementation of PHP Laravel and MySQL, audit capture of specific changes in the system, and automated mailing on workflow triggers. I created supervisor-based queued jobs processing. The DevOps portion involved GitLab CI implementation, scripts, and containerization for developer/testing/staging needs. The testing involved SQLite usage in the testing environment and basic automated browser testing.

Crime Monitoring Application for the Police Department

I developed a Django/Vue-based system for graphical GIS-based monitoring of crime data.

It involved Django-based REST API interfaces with the front end in Vue and asynchronous processing of reports being filed. The environment was containerized for cloud deployment.

Application Porting to AWS Serverless Infrastructure for Cost Optimization

GOAL
AWS cost optimization for optimizing a scenario where an EC2 instance was used for a limited time.

STRATEGY
Implementing a set of Python-based containers that are run as an AWS Lambda function and invoked in sequence by the AWS Step Function.

ORGANIZATION TYPE
Data science organization processing GIS data.

Financial Portfolio Aggregation Platform

A platform to aggregate financial data from FI and stock exchanges using specific interfaces and data scrubbing. The platform enables one to visualize trends in investments on a timeline basis. It also helps spot potential opportunities for investments.

Implementation involved core application in Laravel, REST API interfacing with financial sites, web scrapping using Python for sites missing API interfaces, and cron-based jobs.

DevOps Design and Implementation for a Native Cloud Application Environment

I designed and implemented a complete DevOps environment for a native cloud application environment. The application was a B2B application to provide COVID-19 health monitoring and tracking of employees of customer organizations.

ACCOMPLISHMENTS
• IaC-based implementations using Terraform/Terraform cloud
• CI/CD deployment using GitHub on serverless infrastructure implementations (AWS Lambda/ALB/API gateway/Amazon Aurora)
• Integration of deployments with a custom tool (Let's Encrypt) and plugin (Slack)
• Security enabling using WAF
• Latency improvisation using Amazon Route 53 programming
• Monitoring using Amazon CloudWatch and New Relic
• Cost monitoring and alerts

Education

1991 - 1995

Bachelor of Engineering Degree in Electronics and Communicatons

Delhi Institute of Technology, Delhi University - New Delhi, India

Certifications

APRIL 2009 - APRIL 2021

Project Management Professional

PMI

Skills

Libraries/APIs

REST APIs, Node.js, React, Django ORM, WordPress API, Vue, Leaflet, FFmpeg

Tools

Terraform, AWS Command Line Interface (CLI), Jira, Amazon Virtual Private Cloud (VPC), VPN, AWS Fargate, Amazon CloudWatch, GitLab, NGINX, MQTT, Amazon Cognito, GitLab CI/CD, GitHub, Amazon Elastic Container Service (ECS), AWS IAM, Amazon Simple Queue Service (SQS), Amazon CloudFront CDN, Odoo, Docker Compose, Boto 3, Web GIS, Amazon Simple Email Service (SES), Salesforce Sales Cloud, Amazon Elastic Block Store (EBS), Ansible, RabbitMQ, AWS Step Functions, Make (formerly Integromat), Grafana, AWS CodeBuild

Languages

Python, Perl, C++, PHP, Bash, Go, C, Java, Assembly, Python 3, JavaScript, Java 8

Frameworks

Django, Laravel, Ruby on Rails (RoR), Express.js

Paradigms

DevOps, Agile, Microservices

Platforms

Linux, Docker, Amazon Web Services (AWS), Kubernetes, AWS Lambda, Amazon EC2, Unix, Android, LAMP, AWS ALB, AWS NLB, Azure, New Relic, Ubuntu

Storage

MySQL, PostgreSQL, Linux File Systems, Amazon S3 (AWS S3), Redis, Amazon Aurora, Amazon DynamoDB, Amazon EFS, Datadog, InfluxDB

Industry Expertise

Project Management

Other

Shell Scripting, Containers, CI/CD Pipelines, Technical Hiring, Source Code Review, Interviewing, Architecture, Networking, Infrastructure as Code (IaC), Load Balancers, IP Networks, IT Networking, AWS Cloud Architecture, Cloud Architecture, Amazon Machine Images (AMI), System Architecture, Solution Design, AWS DevOps, Quality Auditing, Cloud, Internet of Things (IoT), Configuration Management, Software Engineering, Storage, Hardware, Hardware Integration, Full-stack, Processing & Threading, Team Management, On-board Diagnostics II (OBD-II), AWS Certificate Manager, Amazon Route 53, Amazon API Gateway, Distributed Systems, Amazon RDS, Encryption, AWS VPN, IoT Security, Security, GitHub Actions, API Gateways, Autoscaling, Backup & Recovery, Identity & Access Management (IAM), Scraping, Bluetooth, Mobile GPS, GPRS, Serverless, Domain DNS Setup, Amazon MQ, Performance, Wails, Modbus Protocol, Software, Deployment, Team Leadership, Zoho

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