Alec Ten Harmsel
Verified Expert in Engineering
Software Developer
Grand Rapids, MI, United States
Toptal member since March 7, 2019
Alec began programming at the age of 14 and has loved it ever since. He ran an autonomous drone team in college for a couple of years before graduating to work on a variety of software in banking and construction management.
Portfolio
Experience
Availability
Preferred Environment
Vim Text Editor, Linux, Gentoo
The most amazing...
...opportunity was when I discovered and helped fix a serious issue less than two weeks after starting at Goldman Sachs.
Work Experience
Programmer
Revela
- Developed tools for property owners to view and manage their properties.
- Added cash basis views to various accounting reports.
- Supported property management software built with Ruby on Rails.
Programmer
ControlNET
- Developed Tridium-based software to sync HVAC and lighting schedules with Microsoft Exchange calendars.
- Modeled labor across construction projects to predict future labor needs.
- Ideated and created a web app to track projects, costs, and work orders using Ruby on Rails, React, and D3, deployed to Kubernetes.
- Created a search engine with Spring Boot and Lucene to search job and work order documents. Made a web front end with Spring Boot and a desktop app interface to the search API with PyQt5.
Programmer
Goldman Sachs
- Wrote custom monitoring and alerting software using Vert.x to reduce time to detect problems by two orders of magnitude.
- Designed, developed, and supported core trading control software written in C++, Java, Scala, and Q globally.
- Improved DevOps tooling to significantly reduce manual intervention during releases.
- Developed a StatsD proxy server with C++ and Boost.Asio to improve monitoring accuracy.
- Created custom reports as needed for crucial business team members.
Hadoop System Administrator
University of Michigan
- Installed and managed Hadoop, Spark, and other related tools.
- Wrote jobs to process HPC cluster logs for monitoring.
- Assisted researchers in analyzing large amounts of data using Hadoop and Spark in Java, Scala, and Python.
- Used Ansible to configure base cluster operating system and manage services, including Hadoop and Spark.
- Wrote system administration tools using Python to reduce manual system administration work.
Experience
Michigan Autonomous Aerial Vehicles
Managed the team developing navigation, computer vision, and other high-level algorithms for two years. Co-managed the team for the same two years, leading or assisting in fundraising, outreach, and recruiting.
Emergency Flight Planning for an Energy-constrained Multicopter
Web-based Coaching App
Education
Bachelor's Degree in Computer Engineering
University of Michigan - Ann Arbor, MI
Skills
Libraries/APIs
Stripe Development, React.js, PyQt, D3.js, Node.js
Tools
Vim Text Editor, Ansible, MATLAB, Yardi
Frameworks
Ruby on Rails, Big Data Architecture, Boost, Vert.x, Hadoop, Spark, Qt 5
Languages
C++, C, Ruby, Java, Scala, Python, Go
Platforms
Linux, Kubernetes
Storage
PostgreSQL, Redis
Other
Gentoo, Boost.Asio
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