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Ben Kettle

PROFILE

Ben Kettle

Ben contributed to the semgrep-interfaces repository by engineering robust dependency resolution features and enhancing configuration management for Semgrep’s ecosystem. He implemented cross-language RPC flows between Python and OCaml, enabling dynamic subproject matching and flexible dependency source handling. His work included extending JSON Schema and Protocol Buffers definitions to support new configuration flags, backward compatibility, and multi-path dependency unpacking, addressing real-world package manager behaviors. Ben also improved documentation in semgrep-docs, clarifying supported package managers and correcting guidance for Swift SCA. His approach emphasized maintainability, clear error reporting, and seamless integration, demonstrating depth in API design, data modeling, and type system evolution.

Overall Statistics

Feature vs Bugs

93%Features

Repository Contributions

17Total
Bugs
1
Commits
17
Features
13
Lines of code
11,311
Activity Months9

Work History

September 2025

2 Commits • 1 Features

Sep 1, 2025

September 2025 monthly summary focused on delivering a flexible dependency resolution improvement and ensuring accurate developer guidance across interfaces and docs. Key outcomes include enabling dynamic resolution with a new allow_local_builds flag and removing unsupported Podfile references from Swift SCA docs, reinforcing backward compatibility and reducing build-time errors.

June 2025

3 Commits • 3 Features

Jun 1, 2025

June 2025 Performance Summary for semgrep-interfaces: Focused delivery on integration readiness, CLI visibility, and feature flag enablement to enhance developer experience and reduce operational friction. Delivered three customer-facing enhancements with careful attention to backward compatibility and clear scope boundaries.

May 2025

1 Commits • 1 Features

May 1, 2025

Concise monthly summary for 2025-05 focusing on key accomplishments for semgrep/semgrep-docs.

April 2025

1 Commits • 1 Features

Apr 1, 2025

Monthly summary for 2025-04 focusing on the semgrep-interfaces repository. Delivered a feature to support multiple source paths for downloaded dependencies, enabling package managers like pip that unpack dependencies into several directories. This preserves backward compatibility with older CLI versions and maintains compatibility with uv. The work reduces integration friction for downstream tooling and improves reliability of dependency resolution.

March 2025

2 Commits • 1 Features

Mar 1, 2025

March 2025 highlights for semgrep-interfaces: Delivered a major enhancement to dependency resolution and subproject matching, introducing an RPC-based cross-language flow and improved dependency source handling. The work strengthens modularity between Python and OCaml components and sets the stage for more scalable multi-language collaboration.

February 2025

3 Commits • 1 Features

Feb 1, 2025

February 2025 monthly summary for semgrep/semgrep-interfaces: Delivered major dependency graph enhancements and TR RPC interface improvements to improve dependency visibility, state tracking, and CLI workflows. Resulting changes enable precise transitive dependency filtering, better backward compatibility, and stronger business value through more reliable dependency management in Semgrep's interfaces ecosystem.

January 2025

1 Commits • 1 Features

Jan 1, 2025

January 2025 performance summary for semgrep-interfaces: Delivered enhanced diff-scan dependency visibility by introducing a full subproject dependency resolution flag and supporting updates to AST and JSON layers. This work improves accuracy of dependency graphs across branches and accelerates risk assessment for releases. No major bug fixes were logged this month for this repository.

November 2024

2 Commits • 2 Features

Nov 1, 2024

Month 2024-11: Focused on delivering robustness and determinism in semgrep-interfaces. Implemented two core features: Data Model Enhancement (Frozen and Hashable Fpath and Manifest dataclasses) and Dependency Resolution Enhancement (Lockfile support in RPC interface). These changes enable using Fpath/Manifest in sets/dicts, support deterministic builds via lockfiles, and provide new types for lockfiles and dependency sources with improved error reporting. Updated generated Python code and .atd to match the new models, ensuring downstream compatibility. No major bugs fixed this period; minor stability and correctness improvements observed in the RPC layer. Technologies demonstrated include Python dataclasses immutability, hashing, ATD generation, RPC interface evolution, and lockfile parsing.

October 2024

2 Commits • 2 Features

Oct 1, 2024

2024-10 Monthly Summary: Focused on reliability, maintainability, and backward compatibility in the semgrep-interfaces repo. Delivered error-handling improvements for dependency resolution and enhanced type definitions for manifest kinds, with JSON serialization support. These changes reduce CLI failures, improve diagnostics, and set a solid foundation for future resilience and observability across the project.

Activity

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Quality Metrics

Correctness98.2%
Maintainability98.2%
Architecture98.2%
Performance90.6%
AI Usage20.0%

Skills & Technologies

Programming Languages

ATDJSONJSON SchemaJavaScriptMarkdownOCamlProtoBufProtobufProtocol BuffersPython

Technical Skills

API DesignBackward CompatibilityCode DocumentationCode GenerationConfiguration ManagementData ModelingData SerializationDependency ManagementDocumentationError HandlingInter-process CommunicationJSON SchemaOCaml DevelopmentProtocol BuffersPython Development

Repositories Contributed To

2 repos

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

semgrep/semgrep-interfaces

Oct 2024 Sep 2025
8 Months active

Languages Used

JSON SchemaOCamlProtocol BuffersPythonTypeScriptATDJSONJavaScript

Technical Skills

Backward CompatibilityCode DocumentationCode GenerationError HandlingProtocol BuffersSchema Definition

semgrep/semgrep-docs

May 2025 Sep 2025
2 Months active

Languages Used

Markdown

Technical Skills

Documentation

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