DevOps Engineer

We are looking for a DevOps Engineer cum Linux System Administrator in Amazon AWS, who can design, build, deploy, maintain, monitor and cost-effectively scale as per need of our web applications LAMP environments. The person should also be able to maintain and extend our AWS, Puppet, Git, Jenkins CI environment and our containerized local dev and QA environments. The person must be a team player, working closely with the DevOps team members and the developers.

Experience: 7 years as Linux System Administrator with recent 3 years in Amazon AWS, Apache HTTP server, Puppet, Jenkins, Docker and building automation scripts using bash and AWS CLI.

Responsibilities

You will be responsible for designing, configuring, deploying, administering, monitoring, analysing, and supporting cloud based (IaaS/PaaS) application services and systems.

You will work alongside developers to deploy our software and systems in the QA and production environments.

You will be continuously improving and automating the environment setup using Puppet code.

You will be managing and extending our Jenkins based CI / CD environment and maintaining our Git repository.

You will be continuously monitoring the servers for load assessment and security risks suggesting appropriate and timely recourse and rectification.

You will be supporting the developers in running Docker on their Ubuntu workstations. You will be building and managing images for them to use.

Analysing the logs like alert and trace files, syslog, auth.log, mail.log, Apache logs, AWS Logs (ELB, ALB, CloudTrail log, RDS logs VPC Flow log, etc.).

Linux update and upgrade, security patches, etc.

Backup and restore, log rotation and purging, snapshots and purging, etc.

Automating and documenting server maintenance tasks.

Strong knowledge of monitoring tools (Nagios, in particular) including experience in designing and implementing new monitoring checks.

Strong troubleshooting and analytical skills, ability to comprehend, review and analyse application logs.

Requirements

7 years of experience working as a Linux system administrator, managing the LAMP stack with the ability to configure and maintain network with subnets, load balancer, mail service, users, groups, sudoer, file and directory permissions, port access, firewall, log files for all services, secure socket layer (SSL), secure shell (SSH) & key-based access, role-based access, crontab, Apache / vhosts configuration, etc.

3 years of experience designing and building LAMP web application environments on AWS services.

2 years of experience with Puppet. Experience with other open-source configuration management utilities such as Chef, Salt, etc. will be a plus.

Puppet certification is preferred.

Design, develop and maintain DevOps process comprising several stages including plan, code, build, test, release, deploy, operate and monitor.

Experience with setting up and maintaining Git and Jenkins CI environment.

Experience with Linux/Unix OS system administration, configuration, troubleshooting, performance tuning, preventative maintenance, and security procedures.

Hands-on experience in building VMs and Containers using Docker and Docker-Compose.

Experience with NewRelic setup and administration.

Experience with MySQL database backup and restore.

Experience with setting up opcache, Varnish, memcache, AWS Elasticache.

Experience with bash scripting system maintenance tasks.

Must have a flair for automation and continuous performance improvement.

Must have strong oral and written communication skills, presentation skills and have the ability to self prioritise tasks.

Must be able to maintain a balanced composure in high stress situations.

Must possess the ability to anticipate and mitigate problems proactively.

Cloud migration experience will be a plus.

Experience with Terraform will be a plus.

Knowledge of basic windows pc maintenance will be a plus.

Expected AWS services setup and configuration skills: Well versed with AWS CLI commands, EC2, VPC, VPC Peering, NAT Gateway, RDS, Route 53, ALB, ELB, Security Groups, IAM Permission Policies, S3, S3 Lifecycle, Glacier, SNS, SES, SQS, EFS, CloudFront, ElastiCache (Memcached), CloudWatch, CloudTrail, Cloud Formation, Autoscaling, Athena, ECS, Trusted Advisor, Certificate Manager. Experience with or knowledge of additional AWS services is a PLUS. Certification preferred.

Expected software and services installation and configuration skills: LAMP, Puppet, HAProxy, Docker (setup Dockerfile, build Docker images, setup docker-compose, YAML, etc.), Jenkins, MySQL 5.5, MySQL 5.6 and MySQL 5.7, mysql backup, Apache 2.4, PHP 5.5, PHP 5.6, PHP 7.2, PHP 7.4, PHP 8.1, PHP-FPM, AWS CLI, NFS, Varnish, SOLR, Zookeeper, Linux system crons, Postfix, pfsense, s6-svscan, OpenSSL, NetBeans, Eclipse, DokuWiki, NewRelic, Nagios, OpenVPN, PHP opcache, Memcache, node.js, npm, JS frameworks, dnsmasq, Git.

Experience with Linux flavours: Ubuntu/Lubuntu 14.04, 16.04, 18.04 & 20.04 Experience with other Linux flavours will be a plus.

CM tools & programming experience: Bash, Puppet, ERB templates, YAML, Ruby (basic knowledge), SQL (basic knowledge), PHP (basic knowledge), JSON

Minimum education: Graduate in Computer Science, MCA or equivalent.