
Emir Salkic worked on the FuelLabs/fuels-rs repository, focusing on two core features over a two-month period. He first delivered a configurable blob ID calculation mechanism in Rust, enabling the system to distinguish between legacy and new binary versions and reducing migration risk as the binary format evolves. In the following month, Emir implemented secure wallet key management using AWS KMS and Google Cloud KMS, refactoring the KMS integration into a generic, extensible structure. His work leveraged skills in Rust, cryptography, and cloud KMS, resulting in improved backward compatibility, enhanced security, and a more flexible foundation for future development.

March 2025 — FuelLabs/fuels-rs: Delivered Cloud KMS-based secure wallet key management with AWS KMS and Google Cloud KMS, enabling cloud-based key management and signing operations. Refactored KMS integration into a generic structure to simplify future provider support. This work strengthens security of wallet keys, enables cloud-native deployment, and reduces operational risk across cloud providers.
March 2025 — FuelLabs/fuels-rs: Delivered Cloud KMS-based secure wallet key management with AWS KMS and Google Cloud KMS, enabling cloud-based key management and signing operations. Refactored KMS integration into a generic structure to simplify future provider support. This work strengthens security of wallet keys, enables cloud-native deployment, and reduces operational risk across cloud providers.
February 2025: Delivered a key feature to support legacy/new binary version compatibility in FuelLabs/fuels-rs by implementing a configurable blob ID calculation offset, aligning with updated design specs for scripts and predicates, and differentiating binary versions in processing to prevent misidentification across upgrades. The work reduces migration risk and paves the way for smoother binary format evolution.
February 2025: Delivered a key feature to support legacy/new binary version compatibility in FuelLabs/fuels-rs by implementing a configurable blob ID calculation offset, aligning with updated design specs for scripts and predicates, and differentiating binary versions in processing to prevent misidentification across upgrades. The work reduces migration risk and paves the way for smoother binary format evolution.
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