DevOps Engineer

About us

CallHub provides cloud based communication software for nonprofits, political parties, advocacy organizations and businesses. We have delivered over 200 millions messages and calls for thousands of customers. We help political candidates during their campaigns in getting their message across to their voters, conduct surveys, manage event/town-hall invites and with recruiting volunteers for election campaigns. We are profitable with 8000+ paying customers from North America, Australia and Europe. Our customers include Uber, the Democratic Party, major political parties in the US, Canada, UK, France and Australia. 

About the Role

As a DevOps Engineer, you will play a crucial role in architecting, implementing, and managing the infrastructure and automation that powers our scalable and reliable cloud-based applications. Your expertise in Python, AWS, and various cloud services will be pivotal in driving our CI/CD pipelines, ensuring optimal performance, security, and availability of our services. Within the DevOps team, you will work closely with highly technical software engineers, quality engineers, support engineers, and product managers to build and maintain robust infrastructure solutions that support our rapidly growing customer base. We're looking for engineers with strong computer science fundamentals who are passionate, inquisitive and eager to learn new technologies and love working in a dynamic and fast-paced environment, contributing to our mission of delivering exceptional product experiences. Your

Responsibilities

• Architect, implement, and manage scalable and secure infrastructure on AWS using services such as RDS, EC2, ELB, ASG, CloudWatch, and Lambda.
• Automate deployment pipelines (CI/CD) to ensure seamless and reliable delivery of software to production.
• Implement and maintain monitoring and alerting systems using CloudWatch and other tools to ensure system reliability and performance.
• Optimize the performance and security of our applications using Cloudflare, Nginx, Redis, and CDNs.
• Manage and optimize databases, including PostgreSQL, with a focus on indexing, query tuning, and performance optimization.
• Act as a Site Reliability Engineer (SRE), being part of the on-call rotation to respond to and resolve critical incidents, ensuring high availability and minimal downtime.
• Develop and implement strategies for incident management, root cause analysis, and post-incident reviews to continuously improve system reliability.
• Collaborate with development teams to integrate DevOps best practices into the lifecycle of applications built with Python, Django, and Celery.
• Deploy and manage message brokers and streaming platforms like RabbitMQ and Kafka.
• Configure and manage proxy servers, reverse proxies, and load balancers to ensure optimal traffic management and security.
• Troubleshoot and resolve infrastructure-related issues promptly.
• Document processes, configurations, and best practices to ensure knowledge sharing and smooth operation.
• Contribute to the continuous improvement of our DevOps practices and toolsets.
• Communicate well with product and relevant stakeholders.

What we’re looking for

• 1-3 years of experience in a DevOps or similar role, with a strong focus on Python scripting, AWS services, and infrastructure management experience.
• Hands-on experience with AWS services such as EC2, RDS, ELB, ASG, CloudWatch, and Lambda.
• Strong knowledge of CI/CD tools and practices, including automation using Jenkins, GitLab CI, or similar tools.
• Experience with infrastructure as code (IaC) tools like Terraform, Pulumi, or CloudFormation.
• Experience with Python-based frameworks like Django and task queues like Celery.
• Proficiency in managing web servers (Nginx), caching solutions (Redis, Memcache), and CDNs.
• Experience with relational databases (PostgreSQL) and messaging systems like RabbitMQ and Kafka.
• Knowledge of database indexing, query tuning, and performance optimization techniques.
• Solid understanding of proxy servers, reverse proxies, and load balancers.
• Ability to troubleshoot complex issues across multiple layers of the stack.
• Strong communication skills, with the ability to work effectively in a collaborative team environment.
• Passionate about learning new technologies and improving existing processes.
• BE/MS in Computer Science or a related field, or equivalent practical experience.

What you can look forward to

• The opportunity to work on cutting-edge cloud technologies and contribute to mission-critical infrastructure.
• A role that allows you to take ownership of significant aspects of our infrastructure and automation.
• A collaborative and open culture where your ideas are valued, and you are encouraged to take initiative and aspire to be great in your role.
• A dynamic work environment where your contributions directly impact the success and reliability of our services. You will get to see your work directly impacting in a significant way.
• Exposure to the full lifecycle of software development and deployment, from design to monitoring and optimization.

• Configure, optimize, document, and support of the infrastructure components of software products (which are hosted in collocated facilities and cloud services such as AWS)
• Design and build tools and frameworks that support deployment and management and platforms
• Design, build, and deliver cloud computing solutions, hosted services, and underlying software infrastructures
• Build core functionality of our cloud-based platform product, deliver secure, reliable services and construct third party integrations
• Assist in coaching application developers on proper DevOps techniques for building scalable applications in the microservices paradigm
• Foster collaboration with software product development and architecture teams to ensure releases are delivered with repeatable and auditable processes
• Support and troubleshoot scalability, high availability, performance, monitoring, backup, and restores of different environments
• Work independently across multiple platforms and applications to understand dependencies
• Evaluate new tools, technologies, and processes to improve speed, efficiency, and scalability of continuous integration environments
• Design and architect solutions for existing client-facing applications as they are moved into cloud environments such as AWS
• Competencies
• Full understanding of scripting and automated process management in languages such as Shell, Ruby and/ or Python
• Working Knowledge SCM tools such as Git, GitHub, Bitbucket, etc.
• Working knowledge of Amazon Web Services and related APIs
• Ability to deliver and manage web or cloud-based services
• General familiarity with monitoring tools
• General familiarity with configuration/provisioning tools such as Terraform
• Experience
• Experience working within an Agile type environment
• 4+ years of experience with cloud-based provisioning (Azure, AWS, Google), monitoring, troubleshooting, and related DevOps technologies
• 4+ years of experience with containerization/orchestration technologies like Rancher, Docker and Kubernetes

• Install, configure, and maintain Kubernetes clusters.
• Develop Kubernetes-based solutions.
• Improve Kubernetes infrastructure.
• Work with other engineers to troubleshoot Kubernetes issues.

• Kubernetes administration experience, including installation, configuration, and troubleshooting
• Kubernetes development experience
• Linux/Unix experience
• Strong analytical and problem-solving skills
• Excellent communication and interpersonal skills
• Ability to work independently and as part of a team

●              Work with application development teams to identify and understand their operational pain points.

●              Document these challenges and define goals to be achieved by the infrastructure team.

●              Prototype and evaluate multiple solutions, often by experimenting with various vendors and tools available, to achieve the goals undertaken.

●              Rollout tools and processes with heavy focus on automation.

●              Evangelize and help onboard application development teams on the platforms provided by the infrastructure team.

●              Co-own the responsibility with application development teams to ensure the reliability of services.

●              Design and implement solutions around observability to ensure ease of maintenance and quick debugging of services

●              Establish and implement administrative and operational best practices in the application development teams.

●              Find avenues to reduce infrastructure costs and drive optimization in all services.

●              5+ years of experience as a DevOps / Infrastructure engineer with cloud platforms (preferably AWS)

●              Experience with git, CI / CD, Docker, etc

●              Experience in working with infrastructure as code (Terraform, etc).

●              Strong Linux Shell scripting experience

●              Experience with one of the programming languages like Python, Java, Kotlin, etc.

• Experience in implementing DevOps practices and DevOps-tools in areas like CI/CD using Jenkins environment automation, and release automation, virtualization, infra as a code or metrics tracking.
• Hands on experience in DevOps tools configuration in different environments.
• Strong knowledge of working with DevOps design patterns, processes and best practices
• Hand-on experience in Setting up Build pipelines.
• Prior working experience in system administration or architecture in Windows or Linux.
• Must have experience in GIT (BitBucket, GitHub, GitLab)
• Hands-on experience on Jenkins pipeline scripting.
• Hands-on knowledge in one scripting language (Nant, Perl, Python, Shell or PowerShell)
• Configuration level skills in tools like SonarQube (or similar tools) and Artifactory.
• Expertise on Virtual Infrastructure (VMWare or VirtualBox or QEMU or KVM or Vagrant) and environment automation/provisioning using SaltStack/Ansible/Puppet/Chef
• Deploying, automating, maintaining and managing Azure cloud based production systems including monitoring capacity.
• Good to have experience in migrating code repositories from one source control to another.
• Hands-on experience in Docker container and orchestration based deployments like Kubernetes, Service Fabric, Docker swarm.
• Must have good communication skills and problem solving skills