Jonathan Lorimer
Engineering Manager at Mercury
Old Toronto, Ontario, Canada
Summary
🤩
Rockstar🎓
Top SchoolJonathan Lorimer is an Engineering Manager based in Old Toronto with eight years of hands-on experience building reliable systems in small-team, early-stage startup environments. He brings deep expertise in strongly typed and functional programming, a focus on correct deployments, and a preference for roles that blend management with individual contribution. At Mercury he progressed from software engineer to lead and now engineering manager, demonstrating rapid technical leadership growth and a knack for shipping production-quality code. An active open-source contributor, he improved critical beaconChain logic and test coverage in ChainSafe’s Lodestar TypeScript Ethereum client, revealing a strong emphasis on correctness and QA. With a BA in Philosophy, he combines analytical rigor with pragmatic engineering practices, thriving where teams need versatile, detail-oriented problem solvers.
8 years of coding experience
6 years of employment as a software developer
Bachelor of Arts (BA honours) Philosophy, Bachelor of Arts (BA honours) Philosophy at University of Victoria
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (12)
typescript10
beacon10
typescripts10
ethereum10
typescript-types10
testing10
blockchain9
javascript8
data-structure7
data-structures7
struct7
staking7
Programming languages (24)
Github contributions (5)
ChainSafe/lodestar
Dec 2018 - Dec 2018
🌟 TypeScript Implementation of Ethereum Consensus
Role in this project:
Back-end Developer & QA Engineer
Back-end Developer & QA EngineerContributions:5 commits, 3 PRs, 19 comments in 1 day
Contributions summary:Jonathan primarily focused on improving the `beaconChain` functionality within the Ethereum consensus implementation. Their work involved refactoring code to avoid potential issues with undefined values and fixing linting errors, specifically within the `stateTransitionHelpers.ts` file. They also added comprehensive test cases for the `getActiveValidatorIndices` function, ensuring the reliability and correctness of the code. These modifications suggest a focus on back-end development and a strong emphasis on testing and code quality.
consensusserenityethereumbeacon-chainproof-of-stake
JonathanLorimer/cfg
Jul 2023 - Apr 2024
Simple Haskell configuration library
Contributions:1 review, 22 PRs, 56 pushes in 9 months
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