Role Description We are seeking a Senior On-Premises Exchange & Messaging Infrastructure Subject Matter Expert (SME) to join our team as a long-term independent contractor. This role is designed for an expert who enjoys solving complex technical challenges, mentoring experienced engineers, and serving as a trusted advisor for architecture, escalated production issues, and advanced troubleshooting. It is not a help desk position or a role for someone whose experience is limited to routine Exchange administration. As our Senior On-Premises Exchange & Messaging Infrastructure SME, you will provide expert guidance on complex on-premises Microsoft Exchange Server environments while working alongside our engineering team. Your responsibilities will include: - Troubleshooting complex Exchange production issues and providing architectural guidance. - Large-scale enterprise messaging environments. - Supporting upgrades, migrations, disaster recovery, performance optimization, and Exchange Hybrid deployments. - Supporting Exchange environments utilizing Citrix NetScaler (ADC) and Citrix CVAD. - Mentoring our engineers through collaborative troubleshooting and knowledge transfer. - Recommending best practices for security, reliability, and performance. - Creating technical documentation and participating in scheduled maintenance or critical production support when needed. Qualifications - Extensive, hands-on experience with on-premises Microsoft Exchange Server and related infrastructure. - Experience with Microsoft Exchange Server 2013, 2016, 2019, and Subscription Edition. - Knowledge of Exchange Hybrid with Microsoft 365. - Familiarity with DAGs, mail flow, transport services, Autodiscover, certificates, SMTP, DNS, SPF, DKIM, and DMARC. - Experience with Active Directory, Windows Server, Group Policy, PowerShell, Microsoft Entra ID, and Azure AD Connect. - Understanding of high availability, disaster recovery, and Exchange security hardening. - Experience with Citrix NetScaler (ADC), including Exchange publishing, reverse proxy, SSL offloading, and load balancing. - Knowledge of Citrix CVAD administration and troubleshooting. - Experience with VMware or Hyper-V. Requirements - Be legally authorized to work in the United States. - Reside within the United States. - Demonstrate expert-level Microsoft Exchange knowledge during the interview process. - Be comfortable mentoring engineers and documenting solutions. - Communicate clearly and professionally with technical team members. Benefits - Independent contractor position. - Remote within the United States. - Long-term consulting relationship. - Flexible workload based on client demand. - Hourly Contract Rate: $100–$150 per hour, based on experience, technical expertise, certifications, interview performance, and the complexity of the engagement. Preferred - Has worked for a Managed Services Provider or consulting firm. - Comfortable being an advisor and teacher, not just a doer. - Can quickly diagnose complex Exchange environments. - Microsoft Exchange on-prem experience. - Can work independently and join calls when needed. - Strong communication skills. Interview Process Qualified candidates should expect a technical interview focused on real-world troubleshooting, Exchange architecture, disaster recovery, PowerShell, mail flow, hybrid deployments, load balancing, and related Microsoft infrastructure technologies. We value practical experience and problem-solving ability over memorized interview answers or certifications alone.

• Build a cutting-edge cloud-native database platform on top of the public cloud. • Work on our in-house Kubernetes operator to support seamless infrastructure management. • Improve the metrics pipeline and build systems to generate better statistics and recommendations. • Work closely with our ClickHouse core development team and other data plane teams, partnering with them to support infrastructure use cases as well as other internal infrastructure improvements. • Architecting and building a robust, scalable, and highly available distributed infrastructure

• Build a cutting-edge cloud-native database platform on top of the public cloud. • Work on our in-house Kubernetes operator to support seamless infrastructure management. • Improve the metrics pipeline and build systems to generate better statistics and recommendations. • Work closely with our ClickHouse core development team and other data plane teams, partnering with them to support infrastructure use cases as well as other internal infrastructure improvements. • Architecting and building a robust, scalable, and highly available distributed infrastructure

Role Description We're looking for an Infrastructure Software Engineer to sit at the intersection of software development and site reliability. Our software stack is cloud-native, built on active collaboration with popular open source technologies from developer tooling through production. You'll spend roughly half your time writing production code for product platform and core systems infrastructure and the other half driving reliability, observability, and operational health of these systems with the rest of the engineering team. On the software side, you'll contribute to the full backend of our product — building and shipping features while also helping to define and build the platform and infrastructure layers those features run on. That means writing production-quality services and APIs and thinking carefully about what it means for a system to be maintainable, observable, and operable at scale. You'll bring an infrastructure-aware perspective to product development, helping the team build things that are designed to run well in production from the start. On the reliability side, you'll take the lead on how we build, deploy, monitor, and alert on our systems — but this isn't a sole-ownership role. You'll work alongside the broader engineering team, building the culture and practices around reliability as much as the tooling itself. That means driving postmortems and remediations collaboratively, establishing the frameworks that help everyone participate meaningfully in on-call and incident response, and closing the loop by improving internal tooling and systems. Our platform sits at the heart of how utilities and energy providers manage an increasingly complex grid. The systems you build and operate need to be fast, correct, and available — grid operators make real-time decisions based on the data and interfaces we provide, and reliability has consequences that extend well beyond our codebase. We take that responsibility seriously, and we want someone who does too. Qualifications - Minimum 3 years of experience in a software engineering role with a strong infrastructure or platform focus - Experience working with Python 3 — you're comfortable owning backend services and APIs end to end, not just writing scripts - Hands-on experience with Kubernetes and GCP (or comparable cloud), ideally in production environments - Experience working with CI/CD pipelines - Familiarity with observability tooling such as Prometheus and Grafana, and an instinct for what good monitoring looks like - A collaborative approach to reliability — you know how to bring a team along, not just fix things yourself Requirements - Experience with energy, utilities, or other regulated/critical infrastructure domains (nice to have) - Familiarity with the Bazel build tool (nice to have) - Familiarity with Go, Node.js and Python packaging (nice to have) - Experience with SQL, databases or data warehouses (nice to have) Benefits - Competitive base salary - Comprehensive benefits, including FSA and 401k for full time employees - Fully remote workplace with options for in office work in the Bay Area - Flexible PTO, which we encourage you to use! - A real impact on climate change - we’re building the world we want to live in and we want you to join us! - The expected base salary for this role is $180,000 - $230,000 annually, depending on experience, skills, and qualifications.