Alex Stewart
Distinguished Engineer, Office Of The CTO at Oxa
Greater Oxford Area United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolAlex Stewart is a Distinguished Engineer in the Office of the CTO with 13 years of experience architecting resilient systems and leading engineering at Oxa from principal to senior technical leadership. With a DPhil in Robotics from Oxford and prior research and industry roles at the Mobile Robotics Group and BAE Systems, he blends deep robotics and algorithmic expertise with pragmatic systems design. He has a track record of hands-on contributions to high-profile open-source numerical tooling—fixing build, compiler and core algorithm issues in the large-scale Ceres Solver optimization library—demonstrating attention to both low-level compatibility and mathematical correctness. Based in the Greater Oxford Area, Alex is equally comfortable moving between research, product architecture, and shipping production-grade back-end fixes that reduce technical debt. Colleagues know him for tackling subtle compiler and algorithmic edge cases that others overlook, marrying academic rigor with operational delivery.
13 years of coding experience
11 years of employment as a software developer
MSE, Robotics, MSE, Robotics at University of PennsylvaniaDPhil Engineering Science, Robotics, DPhil Engineering Science, Robotics at University of OxfordAcademic Exchange, Engineering, Academic Exchange, Engineering at California Institute of TechnologyMaster of Engineering (MEng), Electrical and Electronics Engineering, Master of Engineering (MEng), Electrical and Electronics Engineering at University College London, U. of London
Github Skills (8)
develop10
c-language10
cmake10
cprogramming-language10
numerical-methods10
linear-algebra10
clangd9
clang9
Programming languages (4)
Github contributions (5)
ceres-solver/ceres-solver
Feb 2013 - Nov 2022
A large scale non-linear optimization library
Role in this project:
Back-end Developer
Back-end DeveloperContributions:235 commits, 7 PRs, 2 branches in 9 years 9 months
Contributions summary:Alex primarily contributed to the Ceres Solver library by identifying and resolving build errors, particularly related to unused member variables and compatibility issues with newer compilers and operating systems. The user also fixed issues within the core algorithms such as L-BFGS history buffers and the addition of Wolfe line search options. Additionally, they made improvements to the code by adding checks for negative L-BFGS rank and by fixing operator= ambiguity on some versions of Clang.
structure-from-motiontrust-regionnonlinear-optimization-algorithmsc-plus-plusnonlinear-least-squares
alexsmac/ceres-solver
Jul 2018 - Jul 2018
A large scale non-linear optimization library
Contributions:13 pushes in 1 day
optimizationnon-linearlinearscalelarge-scale
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.