NIKOLAY KOROVAIKO

OBJECTIVE

• Enthusiastic Compiler Engineer seeking for challenging positions & projects

SUMMARY

• Experienced Compiler Engineer 
• Master’s degree in Computer Science (Recommendation Systems)
• Proficient in C/C++, Java 
• Bachelor’s degree in Mathematics and Computer Simulation
• Java/PHP/Oracle DB/DB2 Certified Professional/Database Administrator/Developer

TECHNICAL SKILLS

• Programming Languages: Java, C/C++, C#, PHP, SQL, PL/SQL, SQL PL, LINQ, JavaScript, Python, Perl, Shell, x86 Assembly, Erlang, Delphi (Object Pascal), HTML, XML/XSLT, DHTML, CSS
  
• Frameworks/Methodologies: OOP, Design Patterns, Refactoring, Agile Development, Web services (SOAP/REST), Struts 2.x, Hadoop, Lucene/SOLR, Windows Forms, WPF/Silverlight 4, Symfony 2.x, Zend Framework 1.x, CodeIgniter, Joomla 1.5, Bitrix 4/5, Mambo 4, jQuery/jQueryUI, Dojo & Dojo Widgets, ExtJS, MooTools
• Testing: JUnit, STAF/STAX, Selenium
• Databases: MySQL 4/5, Oracle 9i/10g, DB2 9.1/9.5/9.7, SQL Server 2005/2008, Mnesia
• IDEs: Rational Application Developer, Zend Studio, Eclipse, NetBeans, Visual Studio 2008/2010, Dreamweaver 8/CS3
• Tools & Utilities: LAMP, Tomcat/Jetty/WebSphere, FireBug/YSlow/Web Developer, SVN/CVS/Git, ClearCase/ClearQuest, CMVC, Ant/Make, SQL*Developer, PL/SQL Developer/TOAD for MySQL/DB2, Adobe Photoshop CS2/CS3

WORK EXPERIENCE

Staff Engineer 11/2022-01/2025

Apple Inc. is an American multinational technology company, best known for its consumer electronics, software and online services

• Collaborating with HW teams to help designing new AI features for Apple GPUs
• Adding support to the Apple GPU LLVM backend for new AI features

Staff Engineer 11/2022-01/2025

Nuro Inc is an American robotics company. Nuro develops autonomous delivery vehicles

• Building and optimizing training and onboard inference infrastructure for Pytorch models.
• Co-developed a graph compiler for integrating vendor deployment solutions (e.g. TensorRT, XLA, torch inductor) and peephole graph optimization passes.
• Re-oriented the team towards data-driven optimization processes and designed the features roadmap to meet memory and latency deployment requirements.

Senior Compiler Engineer 1/2019-11/2022

Meta, Inc. (previous, “Facebook, Inc”) is an American social media and technology company

• Led the project to enable dynamic shapes support in PyTorch to enable the next-gen compilers.
• Developed the next iteration of graph execution engine, profiler, several code-specialization optimizations based on profiling information used for serving the majority of Facebook’s ML models.
• Implemented function calls and an Inliner optimization for TorchScript.
• Added a host of small frontend features and python primitive operations. (e.g. list and tensor comprehensions, slicing, etc)
• Technical Environment: C/C++/x86 assembly, LLVM, CUDA, Python, Pytorch

Senior Compiler Engineer 10/2017-1/2019

Intel Nervana Systems is an American multinational corporation and technology company, Hillsboro OR

• Developing an infrastructure including pattern matching and graph rewrite for graph optimizations and number of graph optimizations such as horizontal and vertical fusions, CSE, algebraic simplifier, no-op elimination, copy elimination, zero dimension tensor elimination, arithmetic fusion, in-place computation optimization, etc.
• Participating in IR extension to support multiple-output operations.
• Adding reference and/or optimized implementations for a number of DL primitives.
• Technical Environment: C/C++/x86 assembly, LLVM, Eigen, MKLDNN, Python, TF, MxNet.

Senior Compiler Engineer 03/2016-10/2017

Intel is an American multinational corporation and technology company, Hillsboro OR

• Prototyping and productizing new optimizations for Optimizer and Code Generator (Lowerer). Adding new features and support for new types to existing optimizations including Inliner, Value Propagation, CFG-based (Loop) optimizations, Peephole optimizations.
• Implementing Web Assembly instructions and features in Chakra JavaScript engine.
• Developing microbenchmarks, workloads, and demos to demonstrate performance impact of implemented prototypes.
• Participating in projects exploring leveraging new hardware features in compilers
• Technical Environment: Improving/Extending an optimizing JIT compiler for Microsoft Edge with C/C++/x86 assembly, Shell, Perl, Python, git, vtune.

JIT Optimizer Compiler Developer 01/2012-03/2016

IBM Canada ltd/Java JIT Optimizer team is one of the largest technology, services and consulting organizations in Canada, Toronto ON

• Was responsible for Inliner optimization of IBM’s Testarossa compiler (known as Open Management Runtime compiler in open-source).
• Implemented a new generic dynamic-programming-based Inliner supporting multiple frontends via a pluggable cost/benefit model.
• Implemented context sensitive inlining framework based on partial callstack traces collected by an interpreter profiler and argument propagation via
• static callstacks. Explored the integration of Value Propagation into inlining process vs multiple low-cost control flow insensitive type propagation analyses.
• Worked on decoupling and modularizing Inliner components
  
• Explored the concept of inlining profiles to ensure that Inliner performs optimally in a variety of scenarios such as a standalone optimization, service used by other optimizations, inlining in auto-parallelizable methods
• Extended existing optimizations such as Value Propagation, Loop Versioner, Simplifier and implemented a large number of intrinsics in Code Generator(Lowerer). Implemented new optimizations.
• Enabled more optimizations for ahead-of-time compilation.
• Extended the interpreter profiler to record callstack traces consumed by Inliner. Prototyped a simple JIT Profiler.
• Was involved in performance analysis of various SPEC benchmarks and customer scenarios.
• Technical Environment: Improving/Extending an optimizing JIT compiler for IBM Java VM with C/C++/x86 assembly, Shell, Perl, Python, CMVC, git, RTC, perf, tprof, oprof, jprof, arcflow.

DB2 C++ Software developer 01/2011-01/2012

IBM Canada ltd/DB2 Query Compiler Group is one of the largest technology, services and consulting organizations in Canada, Toronto ON

• Designed the SQL Query Generator programming language and implemented the subset of the language constructs. The language delivers a complete control of various aspects of a query generation process, which allows a user to generate queries targeted at testing a particular optimization or functionality.
• Implemented various components to support the SQG programming language including the parser and interpreter components with C/C++, flex, yacc.
• Designed and developed the set of tools that constitute the larger part of the infrastructure for delivering SQG as a SaaS with C++, Java/JSP, shell, DB2 CLI tools, and jQuery.
• Performed problem investigations and delivered various optimizations to Query Rewrite.
• Developed various components for the testing framework, TestHub. The framework delivers intelligent search capabilities and is tightly integrated with existing automated testing tools.
• Designed the additional structures extending Lucene indices in order to enable high- performance search (e.g. aggregated views, partitioned indices, etc)
• Designed the data model for collecting various user interactions. Created various database objects for the model including tables, indexes, XML schemes and stored procedures.
• Designed and implemented a hybrid data framework to manipulate relational and XML/hierarchical data in a OO fashion in Java.
• Participated in design and development of the front-end for TestHub with Dojo/DojoUI and javascript.
• Technical Environment: Developing Sql Query Generator, improving/extending an optimizing SQL compiler for DB2 in C/C++, Java/JSP, Web Services, Lucene, JS/Dojo/Dojo Widgets, PHP, Perl, Shell scripting, DB2

Teacher Assistant 09/2010-12/2010

The University of Victoria offers over 100 programs to 18000 students in day, evening and distance-education classes. It is recognized for its commitment to research, scholarship, Victoria BC*

• Provided various academic assistance to the students attending Java/C/Assembly/Algorithms classes (e.g. ).
  
• Tutored on various topics in Computer Science and best practices in Software Engineering.
• Resolved technical issues students experience including installation/configuration of various software, simple hardware troubleshooting
• Technical Environment: Java, C, Python, ARM Assembly

Software developer/ Web UI developer 11/2008-3/2009

MDIT Innovations provides a comprehensive software package for “clinics’ simply management”; Vancouver BC

• Created the front-end components for the Clinical Management System (CMS) with jQuery/jQuery UI/ExtJS.
  
• Performed the partial migration of the front-end components from jQuery to ExtJS.
• Redesigned the layouts of the components, added the new functionality to deliver an enhanced user experience.
• Re-factored and optimized the source code.
  
• Technical Environment Erlang & Mnesia, jQuery, ExtJS, Eclipse, KDE SVN

System analyst 03/2008-08/2008

JSC BTA Life is one of the largest life insurance companies in Kazakhstan; Almaty Kazakhstan

• Developed new modules for the Life Insurance Information System (LIC) with PL/SQL.
  
• Closely worked with actuaries, underwriters, accountants and partners to develop standalone desktop applications with Java (Swing) that tightly integrate various information systems inside and outside the company.
  
• Designed various reports for accountants and actuaries.
• Researched the market of Life Insurance Information Systems, analyzed requirements and advantages of migration.
• Implemented various consistency checks throughout Police Life-Cycle.
  
• Technical Environment: Oracle 9i, MySQL 5, Java JDK 1.4/5,NetBeans, SQLDeveloper, SVN*

Web developer 10/2007-03/2008

Megapolus Media Group is a media agency; Almaty Kazakhstan

• Experienced in Full-Cycle Web Development including requirements analysis, marketing strategies, and support.
• Created web solutions ranging from web-brochures to intranet web-applications.
• Developed the following projects:
• is an established world leader in the home electronics market; -A massive selection of funny, cool and crazy T-shirts plus the ability to have your own design printed; -The online beauty contest over Kazakhstan; - Web hosting, domain registration and quality customer support; -Company compounds of workshops: electric-mechanical, power equipment repair, electrical, fabrication of the polygon electric special equipment.
• Technical Environment: MySQL 4/5, PHP (OO), CMS

PHP developer 1/2007-10/2007

Wellcomm is a leader in providing GPS/tracking services across Kazakhstan; Almaty Kazakhstan

• Delivered an online service enabling customers and partners to activate and manage maps with GARMIN API.
• Developed report generation tooling for the service.
• Developed the calendar web-application for managing technicians’ schedules.
• Developed the for Geocaching() with built-in Google Search services
• Redesigned and maintained the web-sites ,
  
• Technical Environment: MySQL 4, PHP (OO), Bitrix, Java/JSP

EDUCATION

ADDITIONAL TRAINING/CERTIFICATES

References available upon request