Senior Software Engineer, Elasticsearch

About Git Hub

Git Hub is the world’s leading platform for agentic software development — powered by Copilot to build, scale, and deliver secure software. Over 180 million developers, including more than 90 % of the Fortune 100 companies, use Git Hub to collaborate, and more than 77,000 organisations have adopted Git Hub Copilot.

In this role you can work from Remote, United Kingdom

The Elasticsearch team at Git Hub owns the infrastructure and code that powers searching Issues, Pull Requests, Projects, Discussions and more. We’re responsible for the creation and management of large-scale Elasticsearch clusters (hundreds of terabytes of data serving multiple thousands of reads and writes per second). Our problem space also includes optimizing index creation, population, repair and reindex processes to ensure that indexes with billions or trillions of records are recoverable, correctly mapped, and can be restored quickly.

At the same time we’re also focused on pushing the boundaries of cluster management, scale and availability.

We’re looking for a senior search and data focused engineer to join the team and help us build the future of Search  top priorities include scaling support for both agentic and human‑driven traffic, improving relevance tooling for teams that build search experiences, and building an API‑driven interface between our relational data and search indexes.

• Builds and enhances the physical and/or virtual frameworks and tools that are used to manage and maintain the infrastructure. Helps create scalable and efficient systems, automates processes, and improves overall infrastructure performance. Participates in capacity planning and design initiatives.
• With minimal guidance, assesses infrastructure capacity needs, predicts growth trends, and plans for scalability. Ensures sufficient resources are allocated and infrastructure is properly scaled to handle increasing demands. Expands infrastructure/platform offerings to meet business and developer needs.

• Acts as the first point of contact for user issues in this area of responsibility. Engages with other teams to diagnose and respond to broad incidents. Solicits information from customers to form an understanding of the nature of the outage and identify potential troubleshooting steps.
• Ensures the security and compliance of the infrastructure. Collaborates with security teams to implement and maintain robust security measures, conduct vulnerability assessments, and adhere to relevant regulatory standards. Performs timely upgrades to applications/open‑source software (OSS)/operating systems used for operation of the infrastructure.
• Establishes appropriate observability and monitoring of infrastructure to proactively identify and address situations, including instructional playbooks. Researches and understands performance gaps or outages. Executes disaster recovery/failure test scenarios.

• Identifies areas for optimization, implements innovative solutions, and drives initiatives to enhance system performance, reliability, and scalability.
• Stays updated with latest technologies, industry trends, and best practices in infrastructure engineering. Implements projects that incorporate these into Git Hub platforms.

• Understands how to read and assess common errors to form accurate diagnoses and create or direct fixes. Remains on‑call to handle incidents and outages, investigating and resolving issues promptly to minimize the downtime and impact on services. Contributes to incident management processes, participates in incident report‑out, identifies root causes, and implements preventive measures to avoid similar incidents in the future.

• Contributes to open‑source projects. Collaborates with broader open‑source community to enhance existing tools, develop new features, and share best practices with other infrastructure engineers in the industry.
• Collaborates with software engineers and other infrastructure teams to troubleshoot issues and optimise infrastructure performance.…