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SamFerracin

PROFILE

Samferracin

Worked extensively on the Qiskit/qiskit-ibm-runtime repository, delivering features that enhanced quantum program execution, noise modeling, and simulation workflows. Developed schema converters, advanced session handling, and local Aer-based simulation with noise injection, focusing on robust Python and Rust backend integration. Improved data serialization, cross-version compatibility, and modular code organization, while strengthening testing infrastructure and documentation for maintainability. Addressed edge-case error handling and logging, enabling safer upgrades and more reliable runtime behavior. Leveraged technologies such as Python, Rust, and NumPy, and applied skills in API development, backend engineering, and quantum computing to support scalable, production-ready quantum workflows.

Overall Statistics

Feature vs Bugs

95%Features

Repository Contributions

94Total
Bugs
2
Commits
94
Features
39
Lines of code
18,851
Activity Months13

Work History

July 2026

12 Commits • 4 Features

Jul 1, 2026

July 2026 deliverables focused on strengthening local simulation capabilities, improving noise-learning workflows, and hardening estimator reliability, with a strong emphasis on business value for developers and users relying on qiskit-ibm-runtime.

June 2026

18 Commits • 6 Features

Jun 1, 2026

June 2026 performance highlights for Qiskit/qiskit-ibm-runtime: Enhanced cross-version compatibility, improved data integrity, and stronger maintainability. Key features delivered: (1) Schema version 1.1 support with converters for executor models, version bump, and enhanced metadata validation; (2) NLV3 v0.3 support with serialization/deserialization converters and tests; (3) Codebase refactor and modularization of executor-estimator utilities for better reuse; (4) Box circuit utilities with tests/docs and compatibility fixes; (5) AdvancedSession extension to support extra request fields in session creation with API/rest adapter updates. Major bugs fixed: fixed passthrough data numpy arrays being incorrectly serialized as lists; added regression tests. Overall impact: safer upgrades, improved data integrity, and maintainable architecture enabling faster feature delivery. Technologies demonstrated: Python, serialization/deserialization pipelines, numpy interoperability, modular architecture, comprehensive testing, and API client/REST adapter evolution.

May 2026

13 Commits • 6 Features

May 1, 2026

May 2026 performance summary for Qiskit/qiskit-ibm-runtime focusing on delivering measurable business value and robust technical gains. The month emphasized delivering richer quantum program results, improving estimator/sampler performance and post-processing, expanding hardware compatibility, and strengthening observability and testing. These efforts collectively reduced runtime, improved accuracy of results, and accelerated hardware-ready workflows for users and teams.

April 2026

10 Commits • 4 Features

Apr 1, 2026

Monthly summary for 2026-04 focusing on business value and technical achievements in Qiskit/qiskit-ibm-runtime. The month delivered substantial runtime improvements, cross-version compatibility, and stronger validation and testing, enabling broader measurement options and more robust execution workflows for customers.

March 2026

10 Commits • 8 Features

Mar 1, 2026

March 2026 focused on strengthening reliability, stability, and compatibility of the IBM Runtime by expanding version support, tightening dependencies, and introducing new converters and session capabilities, with substantial testing coverage added to the Executor and release/versioning improvements to support enterprise deployments.

February 2026

1 Commits • 1 Features

Feb 1, 2026

February 2026 monthly summary for Qiskit/qiskit-ibm-runtime focusing on delivering V0.2 schema converters and enhanced execution options, with thorough testing and a migration-friendly default converter.

January 2026

5 Commits • 4 Features

Jan 1, 2026

January 2026: Strengthened testing infrastructure, ISA validation, and test reliability for Qiskit qiskit-ibm-runtime. Delivered a Fake Nighthawk backend, enhanced error handling and logging, improved non-unitary ISA validation with new tests, refined backend compatibility filtering in tests, and updated IBM Quantum Schemas dependency to ensure stability.

December 2025

1 Commits

Dec 1, 2025

December 2025 — Delivered a stability-focused fix in Qiskit/qiskit-ibm-runtime by addressing QuantumProgram edge-case handling when samplex_arguments are omitted. The patch prevents runtime errors during quantum program execution and strengthens support for sample-based workflows, improving reliability for end-users and reducing potential escalation in production.

November 2025

2 Commits • 1 Features

Nov 1, 2025

November 2025 monthly summary for Qiskit/qiskit-ibm-runtime focused on documentation quality improvements to accelerate adoption and reduce support overhead. Key changes targeted the Executor and QuantumProgramResult data structures, providing practical usage examples, clarified data flows, and guidance on executing Quantum Programs on IBM backends. Also addressed a rendering issue in the docs to improve readability and maintainability, laying groundwork for future feature rollouts.

October 2025

18 Commits • 2 Features

Oct 1, 2025

October 2025 monthly summary for Qiskit/qiskit-ibm-runtime focusing on delivering high-value features, stabilizing the codebase, and strengthening future readiness.

August 2025

1 Commits • 1 Features

Aug 1, 2025

Monthly summary for 2025-08 focusing on key business value and technical achievements. Delivered a critical enhancement to the PauliLindbladMap with drop_qubits and keep_qubits methods, enabling selective qubit tracing and more flexible quantum map analysis. Implemented in Rust with accompanying unit tests and Python documentation. Commit: ff9a3b65eca7592db2e72f3e68bd5227385092bc. No major bugs fixed this month. Overall impact includes improved modeling flexibility, potential performance gains, and better support for quantum error mitigation workflows. Demonstrated strengths in systems programming (Rust), test-driven development, cross-language API design (Rust/Python), and thorough documentation.

January 2025

1 Commits • 1 Features

Jan 1, 2025

January 2025: Delivered a resilience enhancement in Qiskit IBM Runtime by enabling None as a valid layer_noise_model type in ResilienceOptionsV2 and defaulting to noise-learning when the type is not provided. This change reduces configuration friction for users on noisy devices and improves model robustness, with documentation updated to reflect the new default behavior. The implementation (commit 8cf26e41ad1bc5e06911440f6ebbb5c34ea828ac) positions us to improve automatic noise-adaptation and aligns with the product’s resilience goals, setting the stage for broader adoption and easier experimentation in production workloads.

November 2024

2 Commits • 1 Features

Nov 1, 2024

November 2024-11: Delivered Layer Errors Visualization: Swarm Plot and API for Qiskit/qiskit-ibm-runtime, enhancing observability and debugging across runtime layers. Implemented a convenient API to expose individual layer error instances. Updated existing visualizations and tests to accommodate the swarm plot, and added documentation integration for the new visualization. This work improves debugging efficiency, data-driven optimization, and adoption of layer-level error analyses.

Activity

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Quality Metrics

Correctness95.6%
Maintainability92.8%
Architecture91.6%
Performance89.8%
AI Usage25.2%

Skills & Technologies

Programming Languages

MarkdownPythonRustTOMLYAMLreStructuredText

Technical Skills

API DesignAPI DevelopmentAPI developmentAPI integrationBackend DevelopmentBackward compatibilityCI/CDCode QualityContinuous IntegrationData SerializationData StructuresData VisualizationDevOpsDocumentationDocumentation Management

Repositories Contributed To

2 repos

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

Qiskit/qiskit-ibm-runtime

Nov 2024 Jul 2026
12 Months active

Languages Used

PythonMarkdownTOMLYAMLreStructuredText

Technical Skills

API DevelopmentData VisualizationDocumentationPythonTestingBackend Development

Qiskit/qiskit

Aug 2025 Aug 2025
1 Month active

Languages Used

PythonRust

Technical Skills

PythonQuantum InformationRustSoftware Development