Fellowship application clangenb

Hi there my name is Christian Langenbacher (github @clangenb). I hereby request to join th Polkadot Technical Fellowship.

Polkadot Account: 16YCL3UVpVWQLGW3p3Zx4k5WAEp9W1DwdDnxAbyAaPxVxnp3
Kusama Account: E57Aa2P9uWG3Req6XsDBMaPYuJNtuzaErwfAv3a5sdsmBGb

I have been a major contributor to codebases revolving around substrate, i.e., Integritee, Encointer, substrate-api-client since 2018. For Integritee and Encointer, I am also the software lead, and very recently, in January 24, I joined Ajuna es Senior Blockchain Dev. The contributions so far were mostly in the following repos:

Integritee:

• https://github.com/integritee-network/pallets
• https://github.com/integritee-network/worker

Encointer:

• https://github.com/encointer/pallets
• https://github.com/encointer/encointer-wallet-flutter

Substrate-api-client:

• https://github.com/scs/substrate-api-client

Minor Fix supplied to substrate:

• https://github.com/paritytech/substrate/commit/c4d36065764ee23aeb3ccd181c4b6ecea8d2447a

Recently, I have also commited some important fixes to a Web3 funded dart substrate api library:

• Fix extrinsic signature for large payloads: https://github.com/leonardocustodio/polkadart/pull/419
• Fix extrinsic codec for asset hub signed extensions: https://github.com/leonardocustodio/polkadart/pull/401
• and a few more that are smaller, I shall ommit them here.

I ommitted now all the maintenance stuff that I did for the encointer and integritee parachain.

I have also been representing these projects at some conferences:

• Decoded Buenos Aires. Speaking for Encointer: https://www.youtube.com/watch?v=Thf23T_tvGc&t=3s
• PBA Buenos Aires Podium Discution: https://www.linkedin.com/posts/encointer-association_encointer-moneybythepeopleforthepeople-digitallocalcurrencies-activity-7029002526154727424-puVZ/?utm_source=share
• I am also going to have a talk for Integritee at sub0 in March 2024 in Bankock.
• I was at GDC in San Francisco as part of Polkadot Play