Argument-0001: Promotion to Rank 1


Report Date	Date of submission (2025/10/10)
Submitted by	Rodrigo Quelhas

Member details

Matrix username: @romarq:matrix.org
Polkadot address: 12fiMKJP9t3gTFpHEXGYtdbZzwQciCpUcVFRnVXU4JYQLWvA
Current rank: 0
Date of initial induction: 2025/10/06
Date of last report: N/A
Area(s) of Expertise/Interest: FRAME, Parachain Consensus

Reporting period

Start date: 2024/03/05
End date: 2025/10/10

Argument

My experience spans over seven years in blockchain engineering, with the past few years dedicated to Polkadot, currently as a core developer at Moonbeam.

Over the past few months, I have made various contributions to the Polkadot ecosystem, including bug fixes, refactors, and small feature implementations. These contributions have focused on improving developer experience and maintainability, aligning with the Fellowship's goals of supporting robust and sustainable development of the protocol.

Joining the Fellowship allows me to more actively engaged with the Polkadot ecosystem and help shape technical directions collaboratively. I believe my contributions reflect the expectations outlined for Rank 1 in the Manifesto.

Key Contributions

Fix `reserve` logic in `Currency` trait

Fixed a bug in pallet-balances where the reserve and can_reserve methods from Currency trait were incorrectly preventing new reserves when an account's free balance was lower than its frozen balance, even if the usable balance was sufficient after accounting for the reserved balance.

`OnRuntimeUpgrade` deprecation from frame_executive

Officially deprecated OnRuntimeUpgrade parameter in frame_executive::Executive and updated all runtimes to use SingleBlockMigrations from frame_system::Config.

Removal of deprecated and unused consensus-related code

Removed deprecated and unused consensus-related code from the codebase, which reduced technical debt and simplifed the codebase for future maintenance.

Merged PRs to polkadot-sdk

These pull requests include bug fixes, code refactoring, and minor feature enhancements, all of which have helped improve code quality and maintainability for other developers in the ecosystem.

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