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Alexander Blom

PROFILE

Alexander Blom

Blom contributed to core infrastructure in the facebook/folly, facebook/fbthrift, and facebook/buck2 repositories, focusing on reliability, extensibility, and testability. They added VSOCK support and modernized address handling in folly using C++ and variant types, enabling broader deployment scenarios. In fbthrift, Blom implemented Thrift struct annotation support with compile-time and runtime validation, improving type safety and reflection. Their work in buck2 addressed deterministic large integer JSON serialization using Rust, and introduced dynamic invocation modes for testing. Across these projects, Blom applied asynchronous programming, code refactoring, and rigorous testing, delivering robust solutions to complex networking and serialization challenges.

Overall Statistics

Feature vs Bugs

50%Features

Repository Contributions

16Total
Bugs
4
Commits
16
Features
4
Lines of code
1,862
Activity Months4

Your Network

3823 people

Same Organization

@meta.com
2690

Shared Repositories

1133
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Akul GuptaMember
Jim MeyeringMember
Rahul IyengarMember
Wenbin LinMember
Anna KuklianskyMember
Jacob BowerMember
Scott RamsbyMember
Daniel RodríguezMember

Work History

December 2025

2 Commits • 1 Features

Dec 1, 2025

Month: 2025-12 In December 2025, a targeted reliability and testing improvement drive was executed across two critical repositories: facebook/fbthrift and facebook/buck2. The work focused on stabilizing nested multiplex processing and increasing testability of the Buck workflow, delivering measurable business value through reduced runtime risk and faster iteration cycles.

October 2025

3 Commits

Oct 1, 2025

October 2025 monthly summary: Delivered high-impact improvements across Buck2 and fbthrift that strengthen data integrity and runtime reliability, with a focus on business value and maintainable engineering. The work demonstrates strong cross-repo collaboration, rigorous review, and precise debugging under real-world constraints.

September 2025

5 Commits • 1 Features

Sep 1, 2025

September 2025 monthly summary for facebook/fbthrift focusing on delivering Thrift Struct Annotations Support and Validation. Implemented runtime retrieval of struct annotations (get_struct_annotation), along with tests validating runtime recognition on unions and exceptions, and compile-time checks for presence of annotations on structs and fields. Also enhanced handling of multiple annotations per struct to ensure correctness and consistency. The work is backed by targeted commits and improves reflection, validation, and type-safety for annotated Thrift types, enabling stronger API contracts and safer cross-service serialization.

April 2025

6 Commits • 2 Features

Apr 1, 2025

April 2025 monthly summary for folly repository (facebook/folly). Highlights focus on added VSOCK support, improved address handling, test framework enhancements, and cross-type correctness fixes that enable broader deployment scenarios and improved reliability.

Activity

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Quality Metrics

Correctness98.2%
Maintainability90.0%
Architecture92.4%
Performance87.4%
AI Usage40.0%

Skills & Technologies

Programming Languages

CC++JSONPythonRustThrift

Technical Skills

Asynchronous ProgrammingBig Integer HandlingC++C++ DevelopmentC++ developmentCode RefactoringCompile-time programmingCoroutineIP AddressingJSON SerializationNetwork ProgrammingNetworkingPython scriptingRust ProgrammingSocket Programming

Repositories Contributed To

3 repos

Overview of all repositories you've contributed to across your timeline

facebook/fbthrift

Sep 2025 Dec 2025
3 Months active

Languages Used

C++Thrift

Technical Skills

C++ developmentCompile-time programmingThrift frameworkUnit testingreflection and annotationsunit testing

facebook/folly

Apr 2025 Apr 2025
1 Month active

Languages Used

CC++

Technical Skills

C++C++ DevelopmentCode RefactoringCoroutineIP AddressingNetwork Programming

facebook/buck2

Oct 2025 Dec 2025
2 Months active

Languages Used

JSONRustPython

Technical Skills

Big Integer HandlingJSON SerializationRust ProgrammingTestingPython scriptingautomation