MTES-MCT/qualicharge
Nov 2024 – Feb 2026
16 Months active
Languages Used
DockerfileJSONMakefileMarkdownPythonSQLShellTOML
Technical Skills
API DevelopmentAPI IntegrationAPI Performance TestingAlembicBackend DevelopmentBuild Automation
Julien Maupetit
PROFILE
Julien Maupetit
Julien Maupetit engineered and maintained the MTES-MCT/qualicharge backend over 16 months, delivering robust API, data pipeline, and deployment solutions. He implemented features such as soft-delete lifecycle management, timezone-aware data handling, and automated data archival, focusing on reliability and data integrity. Using Python, SQL, and Docker, Julien modernized CI/CD workflows, introduced uv-based dependency management, and optimized database performance with TimescaleDB and PostgreSQL. His work included integrating static analysis, enhancing Prefect-based orchestration, and enforcing code quality through comprehensive linting. These efforts resulted in a scalable, maintainable platform that improved operational reliability, data quality, and developer productivity across the repository.
Overall Statistics
Feature vs Bugs
79%Features
Repository Contributions
224Total
Bugs
23
Commits
224
Features
86
Lines of code
47,919
Activity Months16
Your Network
3 peopleShared Repositories
3
Work History
February 2026
4 Commits • 3 Features
Feb 1, 2026February 2026: Delivered critical API and workflow improvements for MTES-MCT/qualicharge, enhancing accuracy, reliability, and code quality. Implemented timezone-aware API fields and version bump to 0.32.0, fixed energy unit calculations for CARBURE reporting, refactored cooling flows to support predefined periods, and activated comprehensive linters across all modules with updated CI/Makefile. These changes improve cross-region reliability, ensure correct energy metrics, raise maintainability, and strengthen the team's CI/CD discipline, enabling faster, safer releases and clearer auditability.
4 Commits • 3 Features
Feb 1, 2026February 2026: Delivered critical API and workflow improvements for MTES-MCT/qualicharge, enhancing accuracy, reliability, and code quality. Implemented timezone-aware API fields and version bump to 0.32.0, fixed energy unit calculations for CARBURE reporting, refactored cooling flows to support predefined periods, and activated comprehensive linters across all modules with updated CI/Makefile. These changes improve cross-region reliability, ensure correct energy metrics, raise maintainability, and strengthen the team's CI/CD discipline, enabling faster, safer releases and clearer auditability.
February 2026
January 2026
14 Commits • 5 Features
Jan 1, 2026January 2026 — MTES-MCT/qualicharge: Strengthened data integrity, policy enforcement, and automation. Highlights include timezone handling improvements in the Qualicharge API (default Europe/Paris for naive datetimes) and API versioning with age-based submission restrictions; fixes for timezone correctness of Session.start/Session.end; introduction of a daily TIRUERT flow with utilities and deployment improvements; addition of SIREN validation in Prefect flows with robust handling of invalid SIREN; and maintenance upgrades upgrading data7 to 1.0.1. These changes reduce data errors across time zones, improve compliance, and boost operational reliability.
January 2026
14 Commits • 5 Features
Jan 1, 2026January 2026 — MTES-MCT/qualicharge: Strengthened data integrity, policy enforcement, and automation. Highlights include timezone handling improvements in the Qualicharge API (default Europe/Paris for naive datetimes) and API versioning with age-based submission restrictions; fixes for timezone correctness of Session.start/Session.end; introduction of a daily TIRUERT flow with utilities and deployment improvements; addition of SIREN validation in Prefect flows with robust handling of invalid SIREN; and maintenance upgrades upgrading data7 to 1.0.1. These changes reduce data errors across time zones, improve compliance, and boost operational reliability.
December 2025
8 Commits • 3 Features
Dec 1, 2025December 2025 (MTES-MCT/qualicharge) delivered security, data quality, and flow reliability enhancements. Key features delivered include integration of a static analysis tool into CI, data enrichment for operational units, and extensive TIRUERT flow improvements with better observability and data correctness. Major bugs fixed include enforcing timezone-aware datetime handling in API fields to eliminate datetime-related inconsistencies. Overall, these efforts improved security posture, data fidelity, and operational reliability, enabling faster issue detection, more accurate analytics, and easier maintenance. Technologies demonstrated include GitHub Actions, Zizmor static analysis, Prefect observability, timezone-aware datetime handling, API data quality controls, and data enrichment workflows.
8 Commits • 3 Features
Dec 1, 2025December 2025 (MTES-MCT/qualicharge) delivered security, data quality, and flow reliability enhancements. Key features delivered include integration of a static analysis tool into CI, data enrichment for operational units, and extensive TIRUERT flow improvements with better observability and data correctness. Major bugs fixed include enforcing timezone-aware datetime handling in API fields to eliminate datetime-related inconsistencies. Overall, these efforts improved security posture, data fidelity, and operational reliability, enabling faster issue detection, more accurate analytics, and easier maintenance. Technologies demonstrated include GitHub Actions, Zizmor static analysis, Prefect observability, timezone-aware datetime handling, API data quality controls, and data enrichment workflows.
December 2025
November 2025
9 Commits • 3 Features
Nov 1, 2025November 2025 monthly summary for MTES-MCT/qualicharge: Delivered cross-service uv-based dependency management and tooling, unified across Prefect, opendata, client, and dashboard; implemented uv.lock and a universal bin/uv, and updated CI/scripts to reflect the new workflow. Fixed a race condition in Prefect service bootstrap to ensure workers start only after the server is ready using progressive bootstrap. Enhanced CI/CD throughput by parallelizing Docker image builds for api, client, dashboard, locust, notebook, opendata, and prefect, reducing total build times. Implemented operational change to disable Renovate bot for Python updates to prevent churn with manual prioritization for updates. Demonstrated expertise in Python packaging, CI/CD engineering, Docker, and cross-service tooling, delivering tangible business value through faster deployments, more reliable development environments, and simplified maintenance.
November 2025
9 Commits • 3 Features
Nov 1, 2025November 2025 monthly summary for MTES-MCT/qualicharge: Delivered cross-service uv-based dependency management and tooling, unified across Prefect, opendata, client, and dashboard; implemented uv.lock and a universal bin/uv, and updated CI/scripts to reflect the new workflow. Fixed a race condition in Prefect service bootstrap to ensure workers start only after the server is ready using progressive bootstrap. Enhanced CI/CD throughput by parallelizing Docker image builds for api, client, dashboard, locust, notebook, opendata, and prefect, reducing total build times. Implemented operational change to disable Renovate bot for Python updates to prevent churn with manual prioritization for updates. Demonstrated expertise in Python packaging, CI/CD engineering, Docker, and cross-service tooling, delivering tangible business value through faster deployments, more reliable development environments, and simplified maintenance.
October 2025
4 Commits • 3 Features
Oct 1, 2025MTES-MCT/qualicharge – 2025-10: Deployment architecture simplified, operational costs reduced, and release management modernized. Achieved greater stability by removing Nginx reverse proxy in Prefect deployment, switching to Prefect HTTP Basic Authentication, and enabling crash recovery via service restarts. Deactivated unused cooling deployment schedules to reduce resource usage. Shipped Release 0.30.0 with dependency upgrades, updating data7 to 0.13.2 and Starlette to 0.49.1; changelog and lockfiles updated. These changes deliver business value through simpler architecture, lower costs, improved reliability, and up-to-date dependencies.
4 Commits • 3 Features
Oct 1, 2025MTES-MCT/qualicharge – 2025-10: Deployment architecture simplified, operational costs reduced, and release management modernized. Achieved greater stability by removing Nginx reverse proxy in Prefect deployment, switching to Prefect HTTP Basic Authentication, and enabling crash recovery via service restarts. Deactivated unused cooling deployment schedules to reduce resource usage. Shipped Release 0.30.0 with dependency upgrades, updating data7 to 0.13.2 and Starlette to 0.49.1; changelog and lockfiles updated. These changes deliver business value through simpler architecture, lower costs, improved reliability, and up-to-date dependencies.
October 2025
September 2025
8 Commits • 3 Features
Sep 1, 2025Month: 2025-09 — MTES-MCT/qualicharge achieved meaningful business value through delivered features, critical bug fixes, and performance improvements. Key features delivered include soft-delete and decommission endpoints for PointDeCharge and Station, and new Prefect flows for TIRUERT; major bugs fixed include Scalingo CLI run argument parsing and safe Amenageur dataset rendering. Maintenance and tooling improvements enhanced test data, bootstrap performance, and operational units. Overall impact: improved lifecycle management, data safety, faster deployments, and strengthened data pipelines; technologies demonstrated: API design, Python, SQL parameterization, Prefect, and CI/test hygiene.
September 2025
8 Commits • 3 Features
Sep 1, 2025Month: 2025-09 — MTES-MCT/qualicharge achieved meaningful business value through delivered features, critical bug fixes, and performance improvements. Key features delivered include soft-delete and decommission endpoints for PointDeCharge and Station, and new Prefect flows for TIRUERT; major bugs fixed include Scalingo CLI run argument parsing and safe Amenageur dataset rendering. Maintenance and tooling improvements enhanced test data, bootstrap performance, and operational units. Overall impact: improved lifecycle management, data safety, faster deployments, and strengthened data pipelines; technologies demonstrated: API design, Python, SQL parameterization, Prefect, and CI/test hygiene.
August 2025
8 Commits • 2 Features
Aug 1, 2025August 2025 — MTES-MCT/qualicharge monthly summary focusing on business value and technical delivery. Delivered two major features with substantial DevOps and data-model improvements, resulting in more reliable deployments, safer decommissioning workflows, and cleaner data governance. Key outcomes include: robust deployment and DevOps improvements (bootstrap idempotence, Minio seeding reliability, docker-compose workflow, API health checks, and dependency lock handling); API lifecycle enhancements with decommission/recommission endpoints and soft-delete semantics; automated station decommissioning when all points are decommissioned; standardized lowercase database views for consistency; and updated operational unit migrations to reflect evolving topology. These changes reduce deployment risk, shorten on-boarding time for new environments, and enable safer lifecycle operations. Technologies/skills demonstrated include: Docker Compose, Minio, health checks, idempotent bootstrap, Prefect deployment enhancements, Pipenv lockfile management, API design for decommissioning workflows, soft-delete patterns, and database migrations.
8 Commits • 2 Features
Aug 1, 2025August 2025 — MTES-MCT/qualicharge monthly summary focusing on business value and technical delivery. Delivered two major features with substantial DevOps and data-model improvements, resulting in more reliable deployments, safer decommissioning workflows, and cleaner data governance. Key outcomes include: robust deployment and DevOps improvements (bootstrap idempotence, Minio seeding reliability, docker-compose workflow, API health checks, and dependency lock handling); API lifecycle enhancements with decommission/recommission endpoints and soft-delete semantics; automated station decommissioning when all points are decommissioned; standardized lowercase database views for consistency; and updated operational unit migrations to reflect evolving topology. These changes reduce deployment risk, shorten on-boarding time for new environments, and enable safer lifecycle operations. Technologies/skills demonstrated include: Docker Compose, Minio, health checks, idempotent bootstrap, Prefect deployment enhancements, Pipenv lockfile management, API design for decommissioning workflows, soft-delete patterns, and database migrations.
August 2025
July 2025
19 Commits • 8 Features
Jul 1, 2025Month: 2025-07 | Summary focused on delivering reliable API updates, data integrity, performance improvements, and improved developer tooling across MTES-MCT/qualicharge.
July 2025
19 Commits • 8 Features
Jul 1, 2025Month: 2025-07 | Summary focused on delivering reliable API updates, data integrity, performance improvements, and improved developer tooling across MTES-MCT/qualicharge.
June 2025
19 Commits • 6 Features
Jun 1, 2025June 2025 monthly summary for MTES-MCT/qualicharge focusing on stability, data quality, and scale. Delivered backend enhancements across Prefect runtime, data models, database performance, data retention, and real-time status visibility, with traceability to key commits across api, notebook, and workflow components.
19 Commits • 6 Features
Jun 1, 2025June 2025 monthly summary for MTES-MCT/qualicharge focusing on stability, data quality, and scale. Delivered backend enhancements across Prefect runtime, data models, database performance, data retention, and real-time status visibility, with traceability to key commits across api, notebook, and workflow components.
June 2025
May 2025
17 Commits • 5 Features
May 1, 2025May 2025 (MTES-MCT/qualicharge) delivered substantial business value through data export enablement, automated data lifecycle management, and targeted quality and API improvements. The team focused on enabling reliable data extraction, archiving, and governance while tightening data quality and evolving API capabilities to support broader use cases.
May 2025
17 Commits • 5 Features
May 1, 2025May 2025 (MTES-MCT/qualicharge) delivered substantial business value through data export enablement, automated data lifecycle management, and targeted quality and API improvements. The team focused on enabling reliable data extraction, archiving, and governance while tightening data quality and evolving API capabilities to support broader use cases.
April 2025
18 Commits • 3 Features
Apr 1, 2025April 2025 (MTES-MCT/qualicharge) focused on scaling data operations, reliability, and API usability. Key work includes migrating core tables to TimescaleDB hypertables with retention policies and targeted indexing, tightening deployment pipelines, and enhancing localization handling and API usage guidance. These efforts deliver measurable business value by improving data lifecycle management, performance, security, and developer productivity.
18 Commits • 3 Features
Apr 1, 2025April 2025 (MTES-MCT/qualicharge) focused on scaling data operations, reliability, and API usability. Key work includes migrating core tables to TimescaleDB hypertables with retention policies and targeted indexing, tightening deployment pipelines, and enhancing localization handling and API usage guidance. These efforts deliver measurable business value by improving data lifecycle management, performance, security, and developer productivity.
April 2025
March 2025
12 Commits • 3 Features
Mar 1, 2025March 2025 monthly summary for MTES-MCT/qualicharge focused on API reliability, deployment automation, and enhanced operational capabilities for CPOs. Delivered new manage endpoints for station by SIREN, updated client tooling, and stabilized CI; strengthened release discipline with version bumps for 0.19.1 and 0.20.0. Key features and improvements spanned API robustness, deployment tooling, and data validation to enable safer, faster onboarding and operations.
March 2025
12 Commits • 3 Features
Mar 1, 2025March 2025 monthly summary for MTES-MCT/qualicharge focused on API reliability, deployment automation, and enhanced operational capabilities for CPOs. Delivered new manage endpoints for station by SIREN, updated client tooling, and stabilized CI; strengthened release discipline with version bumps for 0.19.1 and 0.20.0. Key features and improvements spanned API robustness, deployment tooling, and data validation to enable safer, faster onboarding and operations.
February 2025
17 Commits • 9 Features
Feb 1, 2025February 2025: MTES-MCT/qualicharge delivered core API enhancements, observability improvements, and governance capabilities, enabling safer multi-deployment testing, improved session visibility, and stronger data integrity. Key outcomes include Dynamic API Environment Targeting via SCALINGO_APP with default to staging; new Session Existence Check API for rapid verification of tracked sessions; API release upgrade to 0.18.0 with PostgreSQL audit integration for change-tracking; Bulk API performance improvements via background insertions; and automated data quality checks with indicator persistence. The CI/test data provisioning was refreshed, documentation updated, and deployment tooling enhanced to reduce setup time and increase reliability.
17 Commits • 9 Features
Feb 1, 2025February 2025: MTES-MCT/qualicharge delivered core API enhancements, observability improvements, and governance capabilities, enabling safer multi-deployment testing, improved session visibility, and stronger data integrity. Key outcomes include Dynamic API Environment Targeting via SCALINGO_APP with default to staging; new Session Existence Check API for rapid verification of tracked sessions; API release upgrade to 0.18.0 with PostgreSQL audit integration for change-tracking; Bulk API performance improvements via background insertions; and automated data quality checks with indicator persistence. The CI/test data provisioning was refreshed, documentation updated, and deployment tooling enhanced to reduce setup time and increase reliability.
February 2025
January 2025
32 Commits • 17 Features
Jan 1, 2025January 2025 monthly summary for MTES-MCT/qualicharge focused on security hardening, reliability, and data pipeline improvements across API, OpenData, and Statique MV integrations. Deliveries reinforce security posture, improve observability, accelerate data workflows, and enhance deployment automation, while hardening data integrity and maintainability.
January 2025
32 Commits • 17 Features
Jan 1, 2025January 2025 monthly summary for MTES-MCT/qualicharge focused on security hardening, reliability, and data pipeline improvements across API, OpenData, and Statique MV integrations. Deliveries reinforce security posture, improve observability, accelerate data workflows, and enhance deployment automation, while hardening data integrity and maintainability.
December 2024
19 Commits • 4 Features
Dec 1, 2024December 2024 monthly summary for MTES-MCT/qualicharge: Key features delivered, major bugs fixed, impact, and skills demonstrated. Focus on business value and concrete outcomes.
19 Commits • 4 Features
Dec 1, 2024December 2024 monthly summary for MTES-MCT/qualicharge: Key features delivered, major bugs fixed, impact, and skills demonstrated. Focus on business value and concrete outcomes.
December 2024
November 2024
16 Commits • 9 Features
Nov 1, 2024Month: 2024-11. Focused on delivering business value through API improvements, data integrity fixes, production reliability enhancements, and developer experience improvements for qualicharge. Key outcomes include UUID-based identifiers for new resources, improved error handling and versioning, data integrity hardening, security hardening of error messages, orchestrator reliability, production config tunings, CLI enhancements, and CI/build improvements with automated performance testing.
November 2024
16 Commits • 9 Features
Nov 1, 2024Month: 2024-11. Focused on delivering business value through API improvements, data integrity fixes, production reliability enhancements, and developer experience improvements for qualicharge. Key outcomes include UUID-based identifiers for new resources, improved error handling and versioning, data integrity hardening, security hardening of error messages, orchestrator reliability, production config tunings, CLI enhancements, and CI/build improvements with automated performance testing.
Activity
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Quality Metrics
Correctness90.8%
Maintainability89.8%
Architecture87.6%
Performance84.6%
AI Usage20.4%
Skills & Technologies
Programming Languages
BashCSVDockerfileErbJSONJavaScriptMakefileMarkdownPythonSQL
Technical Skills
APIAPI Client DevelopmentAPI DeploymentAPI DevelopmentAPI DocumentationAPI IntegrationAPI InteractionAPI OptimizationAPI Performance TestingAPI SecurityAPI TestingAPI developmentAPI integrationAWS S3Alembic
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline