What tech stack does Berkshire Hathaway use?

The clearest backend signal comes from Berkshire Hathaway Energy (BHE), whose technology stack has been catalogued by RocketReach and corroborated by BHE job postings. BHE runs ASP.NET / C# web applications with jQuery and Knockout.js for the frontend, backed by Oracle PL/SQL databases. Enterprise infrastructure runs on Microsoft Azure and VMware vSphere virtualization, with Kubernetes used for container orchestration — indicating modern DevOps maturity for a regulated utility company.

BRK Tech, Berkshire's new internal technology organization announced in 2026 and headquartered in San Francisco, posts roles calling for Python, Java, and cloud-native engineering skills. Its mission — per CEO Abel at the 2026 annual meeting — is to help subsidiaries evolve from technology buyers into technology builders by identifying common design patterns and building reusable reference architectures. GEICO, which operates one of the largest insurance technology platforms in the US, is known to run a primarily Java/Python backend with significant investment in machine learning for telematics, underwriting risk models, and claims processing. Oracle HR, Oracle Procurement, and Taleo recruiting are in use across multiple Berkshire subsidiaries, pointing to Oracle as the dominant ERP vendor across the portfolio.

BNSF has launched an in-house AI predictive maintenance program — one of the first announced BRK Tech initiatives — which uses machine learning to anticipate mechanical failures on locomotives and track, reducing unplanned downtime. The program involves Python-based ML pipelines rather than purchased off-the-shelf AI software, consistent with Abel's 'builder not buyer' technology philosophy.

Berkshire's corporate website runs on minimal technology: Google Tag Manager, GoDaddy DNS, Comodo SSL certificates, and basic HTML. The more interesting data and GTM signals come at the subsidiary level. Microsoft Power BI is deployed at BHE for operational analytics and reporting. Business Intelligence Discoverer (an Oracle legacy BI tool) is also in use, suggesting Oracle Business Intelligence heritage in the energy division.

For marketing and customer acquisition, GEICO is one of the largest digital advertising spenders in the United States, running sophisticated programmatic, paid search, and telematics-driven personalization campaigns. GEICO's CRM and marketing stack is largely proprietary and not publicly enumerated, though its direct-to-consumer model relies heavily on digital channel optimization. Berkshire invested $250 million in Snowflake at its 2020 IPO alongside Salesforce, signaling awareness of cloud data warehousing — though there is no confirmed enterprise Snowflake deployment at the holding company level. Vimeo is used for business video hosting and ShareThis for social analytics at the energy subsidiary. VMware ESX appears in infrastructure signals alongside VMware vSphere Hypervisor.

Berkshire's deep Microsoft Azure footprint at BHE and Office 365 deployment across subsidiaries makes Microsoft-native or Microsoft-integrated products a natural fit for portfolio-wide expansion. Any vendor already integrated with Azure Active Directory / Entra ID, Power BI, or Microsoft 365 has a structural advantage when selling into BHE and likely other Berkshire utilities or manufacturing subsidiaries.

The Oracle ERP and HR footprint (Oracle HR, Oracle Procurement, Taleo, Oracle PL/SQL) is a significant indicator: HR tech, procurement software, and ERP vendors should expect Oracle integration requirements at BHE and potentially across other subsidiaries. Vendors competing with or displacing Oracle should be prepared for long replacement cycles given Oracle's deep embedding across the portfolio.

BRK Tech is the most strategic entry point for enterprise-wide technology vendors in 2026 and beyond. It actively scouts AI and digital transformation platforms to deploy across subsidiaries — a top-down Berkshire initiative that may partially bypass normal subsidiary-level procurement. Security vendors (zero-trust, SIEM, vulnerability management) will find resonance given existing Rapid7 and Nessus signals and the critical infrastructure nature of rail (BNSF) and utility (BHE) subsidiaries — both of which are subject to TSA and NERC CIP cybersecurity regulations respectively.