Jannis Pohlmann

Berlin, Germany

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Summary

🤩

Rockstar

🎓

Top School

Jannis Pohlmann is a seasoned software engineer and founder with 11 years of experience, currently based in Berlin and best known for leading engineering at Edge & Node on The Graph, a decentralized query protocol for blockchains. He blends deep expertise in functional languages, uni-directional dataflows, and user-centered design with hands-on systems work across backend, smart contracts, tooling and GraphQL layers. His open-source contributions to high-profile projects like graph-node, indexer and ethabi show a grounding in both protocol-level infrastructure and practical developer tooling, including fixes for ABI decoding and GraphQL resolver improvements. Jannis favors transparent processes and well-written code, and has repeatedly shipped robust payment and indexing features that bridge on-chain contracts with off-chain services. Prior roles span founding and technical leadership, consulting on React/Clojure stacks, and embedded systems work—evidence of a rare full-stack to low-level systems breadth. He often brings UX sensibility to backend problems, improving developer experience as much as runtime correctness.

11 years of coding experience

13 years of employment as a software developer

Diplom (equiv. MSc) Computer Science and Human Computer Interaction, Diplom (equiv. MSc) Computer Science and Human Computer Interaction at Universität zu Lübeck

English, German

Github Skills (31)

solidity10

back-end-development10

testing10

evm10

command-line-interface10

contract10

typescript10

schema-design10

virtual-machine10

wpgraphql10

abi10

wordpress-graphql10

ethereum10

typescript-types10

command-line10

Programming languages (15)

CSSRustTeXScalaWebAssemblyGoHTMLTypeScript

Github contributions (5)

graphprotocol/indexer

Feb 2020 - Feb 2022

Graph Protocol indexer components and infrastructure

Role in this project:

Back-end Developer

Contributions:13 releases, 71 reviews, 901 commits in 2 years

Contributions summary:Jannis primarily focused on developing and implementing features for the indexer service. They set up the workspace and indexer-service and added commands for starting the service. They also made enhancements to the payment system, enabling the service to handle payments, and incorporated the automatic injection of the GRT/DAI conversion rate into cost model variables. Furthermore, they also updated the database models and helped with improving the cost API.

graph-protocolinfrastructuregraphindexer

graphprotocol/graph-tooling

Oct 2018 - Jun 2021

Monorepo for various tools used by subgraph developers.

Role in this project:

Full-stack Developer

Contributions:25 releases, 11 reviews, 290 commits in 2 years 8 months

Contributions summary:Jannis focused on enhancing the tooling for subgraph developers within the `graph-tooling` repository. Their work involved modifying code across multiple files, including type-generator, compiler, and command scripts. These changes primarily focused on improving the user experience by adding warning messages, clarifying spinner interactions, and fixing minor bugs. The user also contributed by implementing new features like adding a skip-migrations flag.

monoreposubgraphgraphqlyarn-workspacestypescript

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