• Design, build, and own low-level systems across Fusion, Fusion Snapshots, Ignite, and Sched. • Write reliable, well-tested code primarily in Go and C, with Rust and JVM (Groovy/Java, Micronaut) where the codebase calls for it. • Work close to the OS: FUSE filesystems, Linux namespaces, CRIU checkpoint/restore, process supervision, signal handling, static musl builds. • Tackle multi-cloud orchestration and scheduling: provider abstractions (AWS, Azure, GCP), instance selection, autoscaling, spot-instance fault tolerance, durable async queues. • Drive performance engineering — chunked I/O, multi-level caching, buffer pools, bandwidth management. • Set technical direction and raise the standard for testing, observability, and operational excellence. • Mentor teammates and help onboard new engineers.

• Design and develop highly concurrent, distributed backend services with a focus on high availability; • Take solid ownership of architectural contributions, driving technical decisions within and across teams; • Lead performance optimisation efforts and proactively diagnose complex system issues; • Design, develop and test new features, setting a high bar for quality and reliability; • Support the release and documentation of developed features; • Define and champion coding standards and development processes; • Mentor and support more junior engineers within the team; • Provide out-of-hours support as part of an on-call rota.

• Provide technical leadership across the engineering team • Review and approve code, requirements documentation, and integration documentation • Prepare Solution Design documents and contribute as a hands-on development team member • Design and develop microservices using Java 21 and Spring Boot 3.x • Implement and maintain REST API integrations and asynchronous messaging with Kafka or RabbitMQ • Manage database interactions with SQL, MS SQL, and/or MySQL • Deploy and operate services on AWS, including ECS, VPC, and CloudWatch • Implement and maintain OAuth2 and JWT authentication and authorization flows • Maintain and improve CI/CD pipelines using Bitbucket Pipelines

• Help other team members with business and technology questions; • Assist the architect with minor changes to documentation and processes; • Ability to communicate with clients clearly and confidently; • Take initiative to resolve day-to-day team issues; • Participate in ceremonies with our clients; • Interact with the team's Architects to understand the business and technical solution; • Gather and define technical activities;