## Team

We are one team, with a co-lead for each layer. Most of us work mainly on the execution layer (Specs \[EL\]) or the consensus layer (Specs \[CL\]), but our work increasingly crosses between them.

### Co-leads

- ![Mario Vega](<https://specs.ethereum.foundation/assets/images/team/marioevz.png>)

  #### **Mario Vega**

  Co-lead · EL

  Protocol tester and co-lead with an execution-layer focus.
- ![Justin Traglia](<https://specs.ethereum.foundation/assets/images/team/jtraglia.png>)

  #### **Justin Traglia**

  Co-lead · CL

  Protocol researcher and co-lead with a consensus-layer focus. Maintains the consensus specs and c-kzg-4844.

### Specs \[EL\]

- ![danceratopz](<https://specs.ethereum.foundation/assets/images/team/danceratopz.jpg>)

  #### **danceratopz**

  Protocol tester who cares deeply about consensus and client test developer experience.
- ![Felipe](<https://specs.ethereum.foundation/assets/images/team/fselmo.jpg>)

  #### **Felipe**
- ![Guru](<https://specs.ethereum.foundation/assets/images/team/gurukamath.jpg>)

  #### **Guru**
- ![Jochem](<https://specs.ethereum.foundation/assets/images/team/jochem-brouwer.jpg>)

  #### **Jochem**
- ![Louis](<https://specs.ethereum.foundation/assets/images/team/LouisTsai-Csie.jpg>)

  #### **Louis**
- ![Spencer Taylor-Brown](<https://specs.ethereum.foundation/assets/images/team/spencer-tb.jpg>)

  #### **Spencer Taylor-Brown**

  Protocol tester making it all red and then making it all green. Focusing on the next fork.

### Specs \[CL\]

- ![Jihoon Song](<https://specs.ethereum.foundation/assets/images/team/jihoonsong.png>)

  #### **Jihoon Song**

  Consensus specs, with a focus on FOCIL and its Engine API and EIP changes.

## Alumni

- ![Carson](<https://specs.ethereum.foundation/assets/images/team/Carsons-Eels.jpg>)

  #### **Carson**
- ![Dimitry](<https://specs.ethereum.foundation/assets/images/team/winsvega.jpg>)

  #### **Dimitry**
- ![Felix](<https://specs.ethereum.foundation/assets/images/team/felix314159.png>)

  #### **Felix**
- ![kclowes](<https://specs.ethereum.foundation/assets/images/team/kclowes.jpg>)

  #### **kclowes**
- ![Leo Lara](<https://specs.ethereum.foundation/assets/images/team/leolara.jpg>)

  #### **Leo Lara**
- ![Peter Miller](<https://specs.ethereum.foundation/assets/images/team/petertdavies.jpg>)

  #### **Peter Miller**
- ![Sam Wilson](<https://specs.ethereum.foundation/assets/images/team/SamWilsn.png>)

  #### **Sam Wilson**