Role Description Customer Success Engineers at Nuclearn deploy AI software inside nuclear plants. The work covers a lot of ground, such as: - Standing up our platform on customer infrastructure (sometimes air-gapped). - Configuring it for each plant's workflows. - Troubleshooting integrations with Engineering. - Ensuring operators get the outcomes we promised. Reporting to the Head of Customer Outcomes, you'll join a team of four CSEs (growing) as an individual contributor who owns customer relationships from go-live through expansion. You'll be on site regularly, working directly with nuclear engineers, IT teams, and plant operators. The job is technical, customer-facing, and measured by one thing: customers getting the outcomes they paid for. What you'll own - Deployment and implementation: Install and configure Nuclearn's platform on customer infrastructure, on-prem (sometimes air-gapped) or in secure cloud, owning the technical side of plant-system integrations and partnering with Engineering on custom work. - Customer success and adoption: Ensure customers get the outcomes they bought: understand their workflows, train their users, troubleshoot friction, and catch adoption gaps before they become retention risks. - Technical advisory: Be the credible technical voice your customers' IT teams and engineers respect, recommending configurations, optimizing how they use the platform, and documenting patterns that scale to other customers. - Customer voice: Surface what you hear to Product and Engineering, knowing things about how our software is actually used that nobody else at Nuclearn does. Qualifications - 3+ years in customer success engineering, technical implementation, or solutions engineering at a B2B software company. - Experience with enterprise customers on complex deployments. - Genuinely technical: comfortable in Linux, familiar with Docker or Podman. - Customer-facing by choice, handling skeptical technical buyers effectively. - AI-fluent: understanding AI tools and their application in workflows. - Comfortable with candor, addressing issues directly with customers and teams. Nice to have, not required - Experience in nuclear, utilities, energy, or another regulated industry. - Familiarity with Azure, Terraform, or Kubernetes. - Background working with generative AI, Postgres, or Python. - Prior experience at an early-stage startup. You'll be in your element if... - You're comfortable building without a playbook. - You're energized by fast cadence and shifting priorities. - You bring decisions, not just questions. - You want candid feedback. - You like reaching across function lines. How we work We're a values-driven company. Six values shape how we work, and three will be especially visible in this role: - Customer Wins: Their win is our win. - Ownership and Urgency: See it, own it, fix it. - Resourcefulness: Every dollar and hour matters. Benefits - Equity participation. - Medical, dental, and vision insurance. - 401(k) with 100% match on the first 4%. - Unlimited PTO. A few practical notes - Full-time, salaried. - Remote (US-based); Phoenix HQ option available. - Regular travel to customer sites (expect 25 to 40% travel). - U.S. citizenship or permanent residency required for DOE export compliance. How we hire Fast, respectful, and practical. Our goal is first conversation to decision in three weeks or less. - 30-minute intro with a CSE or our Head of People. - 30-minute interview with the Hiring Manager. - Take-home work sample. - Presentation of work sample. Nuclearn hires the best person for each role regardless of background, and we mean that as a practical commitment. We encourage applications from diverse backgrounds.

• Serve as a trusted advisor and primary support resource for customers using the organization’s healthcare software platform. • Build strong relationships with clinical users, administrators, and customer IT teams. • Ensure customers receive timely updates, clear communication, and a positive support experience throughout the issue resolution process. • Advocate for customer needs and provide feedback to internal product and engineering teams. • Investigate, reproduce, document, and manage customer-reported product issues. • Perform structured troubleshooting to identify root causes and determine appropriate resolution paths. • Support application configuration, user administration, access management, and platform setup activities. • Assist customers with login, authentication, user provisioning, and system access issues. • Monitor operational dashboards and proactively identify potential user-impacting concerns. • Partner closely with Product, Engineering, Infrastructure, and Clinical teams to ensure issues are resolved efficiently. • Escalate complex issues with detailed diagnostics, documentation, and supporting evidence. • Coordinate with customer IT teams regarding integrations, authentication, and technical configurations. • Help identify recurring issues and contribute to long-term improvements that enhance customer experience.

• Building relationships with your users. You should know who the key people are at each company, and they should know you. • Owning their feedback and making sure it gets to the wider PostHog team. • Investigating technical issues. You're the first person to dig into customer issues, often solving them yourself rather than immediately passing to support. • Being super responsive to their Slack messages, support tickets, and emails. • Being their favorite ever Customer Success person to work with!

Role Description As our customer base continues to grow, we are looking for a Customer Success Team Leader who will ensure operational excellence, build lasting customer partnerships, and help shape the future of our Customer Success function. This role combines customer relationship management, operational coordination, and team leadership. You will work closely with customers as well as technical, operational, and business teams to ensure seamless service delivery and outstanding customer experience. - Lead and coordinate the Customer Success team. - Build and maintain strong, long-term customer relationships. - Act as the primary escalation point for customer issues and operational challenges. - Ensure service commitments and SLAs are delivered consistently. - Coordinate customer onboarding and service adoption activities. - Align customer expectations with technical and operational capabilities. - Work closely with cross-functional teams to ensure smooth service delivery. - Drive efficient resolution of customer incidents and operational requests. - Monitor customer feedback and identify opportunities for improvement. - Develop and optimise Customer Success processes and best practices. - Support KPI tracking, reporting, and service performance monitoring. - Promote knowledge sharing and effective documentation across the team. - Support pre-sales and operational activities when needed. - Mentor team members and help scale the Customer Success function as the company grows. Qualifications - Experience in Customer Success, Service Delivery, Operations Coordination, Technical Support, or a similar customer-facing operational role. - Strong communication and stakeholder management skills. - Excellent organisational skills and the ability to manage multiple priorities. - Experience handling escalations and working under operational pressure. - Analytical mindset and strong problem-solving abilities. - Ability to coordinate activities across multiple teams. - Good technical understanding of systems, services, or operational environments. - Ability to explain technical topics to non-technical audiences. - Professional written and spoken English. Requirements - Leadership or team coordination experience. - Experience managing SLAs and customer escalations. - Background in the space sector, satellite operations, SSA/SST, or technical service environments. - Technical education or experience in engineering, physics, astronomy, IT, or data analysis. - Experience with KPI reporting, operational analytics, or process improvement initiatives. - Familiarity with tools such as ClickUp, Jira, or similar platforms. - Experience working in international, fast-paced environments. Benefits - Remote-first work model, with occasional in-person meetings at our headquarters in Bydgoszcz. - Full-time employment under an employment contract or B2B agreement. - Flexible working hours. - Dedicated onboarding and mentorship. - Opportunity to work with domain experts and international partners. - Access to conferences and professional development opportunities. - Company library. - Competitive compensation based on your experience and skills.