Serbia-Senior Software Engineer - RISC-V Virtualization

NextSilicon is a swiftly growing unicorn startup that is reimagining high-performance computing. Our pioneering RISC-V and accelerator coprocessor vastly accelerates supercomputers, driving them forward into a new generation. Our new software-defined hardware architecture enables HPC and AI to fulfill its promise of breakthroughs in all advanced research fields.

At NextSilicon, everything we do is guided by three core values:

• Professionalism : We strive for exceptional results through professionalism and unwavering dedication to quality and performance.

• Unity : Collaboration is key to success. That's why we foster a work environment where every employee can feel valued and heard.

• Impact : We're passionate about developing technologies that make a meaningful impact on industries, communities, and individuals worldwide.

We are seeking a highly skilled and experienced Software Engineer to join our team. In this role, you will be responsible for the architecture and implementation of virtualization support for our custom RISC-V implementation, ensuring our hardware-software synergy delivers maximum performance for virtualized workloads.

• B.Sc in Electrical Engineering, Computer Science, or equivalent experience.

• 7+ years of experience as a low-level software engineer.

• Deep technical literacy: Ability to digest and implement complex technical specifications, specifically the RISC-V H-extension (Hypervisor).

• Virtualization expertise: Solid understanding of virtualization fundamentals, including nested page-tables, virtualized I/O, and IOMMU logic.

• Strong OS Internals: Proficiency in kernel-level development and memory management.

• Strong, proven coding skills in C and C++.

• Hardware-aware debugging: Ability to root-cause complex integration issues across the stack, distinguishing between software bugs, hardware errata, or spec misinterpretations.

• Familiarity with Python for scripting and internal tooling — an advantage.

• Experience with KVM, OpenSBI, or custom micro-hypervisors — an advantage.

• A proactive, can-do approach and flexible mindset.

• Excellent written and verbal communication skills.

• Ability to work both independently and as part of a collaborative team.