Stewart Johnston

Stewart Johnston Email and Phone Number

Technical leader, educator, and engineer @ Pulumi
seattle, washington, united states
Stewart Johnston's Location
Taynuilt, Scotland, United Kingdom, United Kingdom
About Stewart Johnston

A customer-facing engineer with a decade of experience of solving complex problems in on-premise and cloud environments.

Stewart Johnston's Current Company Details
Pulumi

Pulumi

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Technical leader, educator, and engineer
seattle, washington, united states
Website:
pulumi.com
Employees:
34
Stewart Johnston Work Experience Details
  • Pulumi
    Support Engineer
    Pulumi Feb 2024 - Present
    Seattle, Washington, United States
  • Customer.Io
    Technical Support, Tier Ii Team Lead
    Customer.Io Oct 2021 - Apr 2023
    Portland, Oregon, United States
    As the Tier II Team Lead at customer.io, I transitioned into a management role, and over my tenure grep the team from two people to six. While continuing to contribute directly to customer support and producing training materials, I embraced a mentorship role, providing individual and group guidance to my team members.To foster their career growth and effectiveness, I implemented a comprehensive approach. This included hosting regular one-on-one meetings, monitoring performance, and actively supporting their professional development. As part of deepening their knowledge, I designed and implemented a scheme where each team member joined a product squad during the inception, planning, development, and testing phases, culminating in feature release. The team member would produce documentation and training materials for the department, ensuring that Technical Support would have resident experts ready for any new feature launch. This innovative approach not only accelerated the company's release speed but also freed up product managers from long-term support responsibilities, enabling them to focus on new features.Additionally, I created runbooks for Technical Support during outages, empowering the team to communicate incidents and updates directly with customers. This proactive step relieved on-call SRE or engineers from customer communications, allowing them to swiftly address and resolve technical issues.These initiatives positively impacted the company's operations, improving customer satisfaction, accelerating feature releases, and optimizing resource allocation.
  • Customer.Io
    Technical Support Engineer, Tier Ii
    Customer.Io May 2021 - Oct 2021
    Portland, Oregon, United States
    During my time at customer.io, we identified a need for a highly techical leader with deep knowledge of the company's infrastructure and software stack to elevate understanding within the Technical Support department, and I moved to the TS team to build a Tier II (and effectively Tier III) team.To enhance the efficiency of the Technical Support department, I designed and implemented troubleshooting and escalation playbooks. These playbooks streamlined the ticket-handling process between different tiers and the engineering team, resulting in improved response times and customer satisfaction.Recognizing the importance of knowledge sharing, I took the initiative to host and record video and other learning materials. By sharing in-depth insights into the company's infrastructure, I significantly enhanced the technical knowledge and troubleshooting skills across the department, contributing to improved overall performance.Throughout my tenure, I maintained an excellent Customer Satisfaction (CSAT) rating, a testament to my dedication to providing exceptional support and resolving customer issues effectively.
  • Customer.Io
    Site Reliability Engineer
    Customer.Io Oct 2019 - May 2021
    Portland, Oregon, United States
    As a Site Reliability Engineer at customer.io, I played a vital role in ensuring the stability and security of the product. I performed on-call duties to monitor the health and security of the platform using Grafana and Prometheus, and responded quickly to incidents to minimize their impact.One of my key contributions was bringing the organization's infrastructure under code by bringing all the DNS records into Terraform. I also wrote Ansible playbooks for services as they were developed by the backend engineers, reconfigured the load balancers to accommodate new traffic with routing rules, and wrote code to stress-test our services and endpoints at multiple levels to determine their performance and bottlenecks. These efforts improved our efficiency, scalability, and resilience.Additionally, I played a critical role in performing technical evidence gathering for two SOC2 audits, ensuring that customer.io met the highest standards of data security and compliance.
  • Dentally
    Ruby Developer
    Dentally Oct 2018 - Sep 2019
    London, England, United Kingdom
    In 2018 Dentally acquired Goodteith, and as a developer I was responsible for the planning, development, and data migration of Goodteith customers. By carefully managing the migration process, we were able to minimize data loss and ensure a smooth transition for our clients.In addition to the migration tool, I also built a reproducible development environment for the rest of the team using Packer, Vagrant, and Chef. This allowed me to safely manage multiple migrations simultaneously.Overall, my contributions helped Dentally welcome Goodteith customers with the minimum of stress, and I'm proud that I was able to ensure those customers were welcomed and well looked after.
  • Goodteith Software Limited
    Chief Technology Officer
    Goodteith Software Limited Aug 2017 - Oct 2018
    Scotland, United Kingdom
    As the CTO at Goodteith, I led the development of dental practice management software. One of my key contributions was designing and building a robust data pipeline and parser that extracted data from our software and sent it to the NHS in XML format using SOAP. This involved converting data from YAML to XML and vice versa, and required a Windows service to manage the queue of send and receive data. By implementing this pipeline, we were able to improve data accuracy, reduce errors, and ensure compliance with NHS standards.
  • Invent The World
    Technical Lead And Mad Scientist
    Invent The World May 2014 - Jun 2017
    Melbourne, Victoria, Australia
    As the co-founder of Invent the World, I led a team that created and ran after-school classes and holiday camps for children ages 5-13. To provide a consistent environment for our pupils, I designed and built live USBs based on Arch Linux that enabled our students to access programming and gaming activities in a secure, controlled, and consistent manner. I also utilized SaltStack to manage our infrastructure and spin up on-demand servers for custom Minecraft maps, turning a day-long manual process into a single command.
  • Rmit University
    Computer Science Tutor
    Rmit University Jan 2013 - Jun 2016
  • Ngaanyatjarra Health Service
    Ict Support Officer
    Ngaanyatjarra Health Service Jun 2010 - Nov 2011

Stewart Johnston Education Details

Frequently Asked Questions about Stewart Johnston

What company does Stewart Johnston work for?

Stewart Johnston works for Pulumi

What is Stewart Johnston's role at the current company?

Stewart Johnston's current role is Technical leader, educator, and engineer.

What schools did Stewart Johnston attend?

Stewart Johnston attended Rmit University.

Who are Stewart Johnston's colleagues?

Stewart Johnston's colleagues are Jay Wampold, Max Mauro, Daniel Bradley, Muhammad Hussein, Sean Yeh, Ranjith M, Shohruh Aminov.

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