Daniel Ellison
Founder at Improvability AI
Toronto, Ontario, Canada
Summary
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SeniorDaniel Ellison is a seasoned software engineer and founder based in Toronto with 11 years of focused experience building backend systems, developer tooling, and embedded blockchain infrastructure. He has a rare blend of deep low-level smart-contract expertise—authoring the ENS registry implementation in LLL and hardening the LLL compiler—with practical product work ranging from Docker/OpenStack adoption to Python-based billing systems. At ConsenSys he prototyped an affordable Ethereum home node and championed developer education through AMAs and tutorials, reflecting both technical rigor and community leadership. Daniel moves comfortably between systems architecture and hands-on coding, with a knack for refactoring low-level code for performance and safety. His background in graphic arts and early web design gives him an unusual sensitivity to user-facing details alongside backend reliability.
11 years of coding experience
25 years of employment as a software developer
Github Skills (14)
smart-contracts10
name-service10
solidity10
nameserver10
system-design10
ethereum10
blockchain10
testing10
assemblies8
assembly8
cryptocurrency8
assembler8
cryptography7
programming-language6
Programming languages (5)
Github contributions (5)
ensdomains/ens
Sep 2016 - Jan 2017
Implementations for ENS core functionality: The registry, registrars, and public resolvers.
Role in this project:
Back-end Developer & System Architect
Back-end Developer & System ArchitectContributions:9 commits, 9 PRs, 6 comments in 4 months
Contributions summary:Daniel primarily contributed to implementing and optimizing the ENS (Ethereum Name Service) registry using LLL (Low-Level Lisp). Their work involved adding core functionality such as setting owners, resolvers, and TTLs for ENS nodes, along with adding a public resolver. The user refactored the code by introducing macros and optimizing the memory usage, while also addressing bugs and making the code more efficient. These actions suggest a significant role in the architectural design and core implementation of the ENS system.
resolvers
argotorg/solidity
Oct 2016 - Dec 2016
Solidity, the Smart Contract Programming Language
Role in this project:QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:8 commits, 3 PRs, 60 comments in 1 month
Contributions summary:Daniel's contributions primarily focused on enhancing the test suite for the Solidity language compiler. They added new tests, including 'panic' tests and tests for exponent operators, LLL constructors, and arithmetic/binary/unary operations. The user also simplified and modified existing tests related to the 'exp_operator_on_range'. Their work is geared towards ensuring the accuracy and reliability of the compiler's functionalities.
programming-languagesmart-contractssoliditycppethereum
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