Justin Lapolla Email & Phone Number

Saint Paul, Mn, Us

Houston, Texas, Us

In this position, I:- Contribute code in a large C++ project (I work on the Cray compiler team).- Add classes, optimization passes, and other features to an LLVM-based compiler (the Cray C and C++ compilers are based on Clang/LLVM).- Analyze assembly generated by our compiler to improve optimization and speed up customer codes.- Use GDB to debug C and C++ source and assembly.- Maintain the build system of a large C++ project (using CMake, Make, and Python).- Use binutils (objdump, nm, et cetera) to diagnose issues in binaries (library dependencies, missing symbols, bad generated code, et cetera).- Produce reduced test cases from user bugs using a combination of automated scripts, and smarts.- Use the Linux command line for 100% of my work (ssh, bash, and vim).- Read man pages and texinfo documentation when I need to know more about a tool.Main responsibilities:- Implement fixes and features for the Cray C/C++ compiler (written in C++).Side projects at Cray:- Brought an internal database system from prototype to production. The system integrates with existing processes to collect data from about 20 different hosts on our network. Main server is implemented with Django, Python, ANTLR, PostgreSQL, and Bash. Client software installed on all other hosts is implemented in Bash (some of these hosts are very old and don't support Python well). Deployment and orchestration is handled with Puppet and Docker Compose. System has been in production since 11/2017. Collects well over 1 million rows every day. As of 06/2019, no defects have yet been found. I did spend a week in 10/2018 adding a new feature; it went smoothly.

Responsibilities:- Improve my skills through reading, online courses, software projects, and software experiments.- Focus on how to add value for future employers.Achievements:- Autorecurse tool which makes it easier to work with large GNU Make projects. Currently working on packaging and user installation experience. Written in Python.- Studied Coq proof assistant and formal logic applications to programming.- Read 300 pages per week (consistent and tracked since 3/1/2017). Completed books include: Continuous Delivery (Humble), Design Patterns (Gamma), Refactoring (Fowler), Computer Networks (Tanenbaum), The Art of Computer Programming Vol 1 (Knuth), Algorithms (Sedgewick), Understanding Formal Methods (Monin), Software Foundations (Pierce) (online).

Phoenix, Arizona, Us

Responsibilities- Propose and implement solutions to streamline business processes at all levels of the company- Full-stack multi-tier web application development (Java and JavaScript)- Conduct in-depth interviews with users and other stakeholders to define project requirements- Windows desktop application development (C#)Achievements- Created automated data alignment tool used for reporting sales figures, saving an estimated $50,000 per year on manual labor, and freeing up critical resources to focus on important tasks- Improved UX and underlying architecture of existing GUI application which customers use to configure one of our new integrated circuit products

Phoenix, Arizona, Us

Responsibilities- Perform all phases of the software development life cycle, including requirements elicitation, planning, design, testing, implementation, and maintenance- Support the mid-power product line team by providing software solutions to problems encountered in the development of mixed-signal integrated circuitsAchievements- Designed a special-purpose, high-level programming language with compiler written in C++- Deployed compiler (mentioned above) on Fairchild’s Linux servers as part of an integrated application including help documentation, setup wizard, and integration with the SciTE text editor- Developed software to generate a bit stream to configure an FPGA (written in C++)- Developed graphical applications for configuring chips and generating a bit stream (written in JavaScript)