Senior Full Stack Engineer

About AlterionAlterion is building the control plane for the agentic enterprise - enabling organizations to safely deploy, monitor, and scale autonomous AI agents with full visibility and governance. Our platform unifies semantic observability, dynamic policy enforcement, and distributed monitoring to ensure agent ecosystems remain trustworthy, compliant, and efficient at scale. As part of this mission, the Intelligence Platform is responsible for understanding, scoring, and optimizing agent behavior across the enterprise — including accuracy, security, cost, drift, anomalous behavior, and runtime dynamics.Role OverviewWe are seeking a Senior Full Stack Engineer to design, build, and own core backend and distributed systems that power Alterion’s platform. This is a hands-on technical leadership role for a senior systems engineer who enjoys building durable infrastructure, making principled design tradeoffs, and mentoring other engineers.You will work closely with the founders on system architecture and technical direction, while remaining directly accountable for production code. This is not a people-management role; technical ownership and execution are core expectations.What You’ll Work OnDesign and implement backend and distributed systems supporting identity, policy enforcement, observability, and agent lifecycle managementBuild secure, scalable APIs and services that operate reliably in multi-tenant, cloud-native environmentsMake and document system design tradeoffs across consistency, performance, availability, and operational complexityOwn backend services end to end, from initial design through production deployment, monitoring, and iterationEstablish backend engineering standards for correctness, testing, observability, and long-term maintainabilityLead design reviews and mentor engineers through code reviews and technical guidanceCollaborate closely with security, AI, and product partners to translate platform requirements into robust system designsRequired Qualifications5–8 years of experience building and operating backend or distributed systems in production environmentsStrong proficiency in one or more backend languages such as TypeScript, Python, or GoExperience designing and operating cloud-native services on AWS, GCP, or AzureSolid understanding of distributed systems fundamentals, including scalability, fault tolerance, data consistency, and observabilityExperience designing APIs and service boundaries for complex or evolving systemsDemonstrated ownership of critical systems with responsibility for reliability, performance, and long-term healthExperience mentoring other engineers or serving as a technical lead on backend or platform projectsComfort operating in ambiguous, early-stage environments and helping shape system directionPreferred QualificationsExperience with event-driven architectures, message queues, or streaming systemsFamiliarity with identity, authentication, authorization, or policy-based systemsExposure to security-sensitive, compliance-oriented, or multi-tenant platformsExperience operating systems at meaningful scale (high request volume, large datasets, or multi-region deployments)Strong production observability practices across metrics, logs, and tracesPrior experience at an early-stage startup or on foundational infrastructure teamsExposure to AI-adjacent systems or data pipelines (nice to have, not required)Why AlterionBuild foundational infrastructure for the next generation of AI systemsWork directly with the founders on architecture and long-term technical directionOwn meaningful, high-impact systems from day oneJoin a small, senior team that values depth, judgment, and qualityCompetitive compensation, meaningful equity, and the opportunity to shape a new category