Youssef Belguith - Ingénieur en Apprentissage Automatique

Overview

Cross-platform Flutter developer at a middle level specializing in consumer personal-finance interfaces and local data features. The strongest proven skill is shipping polished Flutter UI and local state/persistence as shown by the screens (dashboard, analytics, settings) and AppProvider persistence and CSV import/export logic. The public code does not show automated tests, CI/release infrastructure, background sync or advanced offline conflict resolution.

Phone

Technical skills

Java

Dart

JavaScript

Python

SQL

TypeScript

Node JS

Java

Spring Boot

DevOps

Git

GitHub

Docker

TCP/IP

Mobile

Flutter

Declarative UI

State Management

Material Design

Databases

PostgreSQL

Frontend

Angular

Projects

Global Salary Navigator

Designed a salary comparison and tax simulation platform with a modular frontend and a layered backend. Built the frontend architecture in Angular to support future business feature additions and implemented the backend structure in Spring Boot. Modeled international salary and tax data using SQL Server to support simulation scenarios. Established the core technical foundations for comparing salaries across countries and performing tax calculations.

Cash Pilot

Developed a personal finance mobile app focused on reliable budget and expense tracking. Added validation to prevent duplicate transactions during CSV import/export by checking unique identifiers. Implemented real-time budget utilization with alerts at defined thresholds and built interactive analytics dashboards with historical trends. Created dynamic expense categories with automatic reassignment and stored data locally for persistence across app restarts.

Timeline

Université de Sfax

Bachelor's Degree · Informatique, Génie logiciel

2024–2027 Sfax, Tunisia

Middle Mobile Developer Confidence: Medium Cross-platform

Cross-platform Flutter developer at a middle level specializing in consumer personal-finance interfaces and local data features. The strongest proven skill is shipping polished Flutter UI and local state/persistence as shown by the screens (dashboard, analytics, settings) and AppProvider persistence and CSV import/export logic. The public code does not show automated tests, CI/release infrastructure, background sync or advanced offline conflict resolution.

Platform Native Mastery

2/10

Knowing the mobile platform

Basic Flutter lifecycle and state handling is present (ChangeNotifier, SharedPreferences, guarded async UI updates) but there is no evidence of process-death handling, structured concurrency/cancellation tied to UI lifecycle, or background work respecting OS limits.

Evidence

BolbolInfo/cash-pilot/providers/app_provider.dart: load(), _saveExpenses(), use of SharedPreferences for persistence BolbolInfo/cash-pilot/screens/settings_screen.dart: context.mounted checks in async import/export handlers

Mobile UI/UX & Responsiveness

4/10

Smooth mobile experience

Well-structured Flutter UI using Slivers, custom widgets, DraggableScrollableSheet and charts; shows thought about composition and Material patterns but remains a single-app UI surface without advanced adaptive or multi-form-factor strategies.

Evidence

BolbolInfo/cash-pilot/screens/dashboard_screen.dart: extensive use of SliverToBoxAdapter/SliverList and custom widgets (StatTile, ExpenseTile) BolbolInfo/cash-pilot/screens/settings_screen.dart: DraggableScrollableSheet and modal forms BolbolInfo/cash-pilot/screens/analytics_screen.dart: use of fl_chart PieChart and BarChart for visualizations

Performance & Battery

2/10

Speed and battery use

Some efficient UI patterns (builders, slivers) and limited data sorting, but no measured performance work, profiling results, or battery-aware background handling.

Evidence

BolbolInfo/cash-pilot/screens/analytics_screen.dart: uses ListView.builder and FlChart but no instrumentation BolbolInfo/cash-pilot/providers/app_provider.dart: sorts expense lists for display

Offline & Data Sync

2/10

Working offline and syncing

Local-first persistence and CSV import/export with basic duplicate detection are implemented, but there is no offline-sync engine, conflict resolution strategy, or migration/versioning beyond simple pref keys.

Evidence

BolbolInfo/cash-pilot/providers/app_provider.dart: load(), _saveExpenses(), importCsv() merging by ID BolbolInfo/cash-pilot/screens/settings_screen.dart: export/import CSV flows using FilePicker and Share

Device Integration

3/10

Using device features

Concrete device integrations for file picking, temporary files and sharing are present, however no full permission flows, denial handling, or richer device APIs (camera, location) are implemented.

Evidence

BolbolInfo/cash-pilot/screens/settings_screen.dart: FilePicker.platform.pickFiles usage and getTemporaryDirectory + Share.shareXFiles

pub imports in screens reference path_provider, file_picker and share_plus (file-based import/export)

Release & App Lifecycle

Building and publishing apps

Not evidenced in public code

Expertise

Flutter· Middle

Mobile UI/UX· Middle

Industries

Financial Services· Middle

Technologies

Dart· Middle

Flutter

Declarative UI

State Management

Material Design

Recommendations

Use the developer to build consumer personal-finance mobile apps and feature iterations focusing on UI/UX and local-first workflows.
Expand the platform work with a robust offline-sync engine and conflict resolution (server sync, operational transforms or idempotent merging) for multi-device scenarios.
Add automated tests (widget/unit) and a CI pipeline with release automation to raise production readiness.
Integrate platform capabilities (deep links, permission flows, crash reporting) and add performance profiling to address cold-start and jank issues

Repositories

The developer's experience in this domain has been verified based on AI analysis of the following repositories:

cash-pilot YoussefBelghith455

Junior QA Engineer Confidence: Medium Generalist

Junior Java developer specializing in basic client-server socket applications. The strongest proven skill is implementing socket-based communication and simple protocol handling as shown in serverPackage/Server.java and clientPackage/Client.java using DataInputStream/DataOutputStream and BufferedReader/PrintWriter. There is little to no evidence of automated testing, CI integration, performance testing or production hardening in the public code.

Test Automation Frameworks

Building automated tests

Not evidenced in public code

Test Coverage & Strategy

What and how to test

Not evidenced in public code

API & Integration Testing

Testing how parts work together

Not evidenced in public code

Performance & Load Testing

Testing speed under load

Not evidenced in public code

Bug Reporting & Analysis

Finding and describing bugs

Not evidenced in public code

CI Test Integration

Running tests automatically

Not evidenced in public code

Technologies

Python

JavaScript

Java· since 2024 · Junior

TypeScript

SQL

Git· since 2025

Docker

GitHub

TCP/IP

Recommendations

Add automated integration tests for the client-server flows using JUnit and mocks or Testcontainers to verify end-to-end behavior and error paths.
Introduce negative-path and boundary tests that assert exact failure responses (invalid input, division by zero, malformed objects) rather than only happy-paths.
Add a CI workflow that runs the test suite, captures logs/console output on failures, and prevents regressions on push.
Improve input validation and logging and separate protocol parsing into testable units to enable unit and contract tests.

Repositories

The developer's experience in this domain has been verified based on AI analysis of the following repositories:

TP1-DAR2026 TP2-DAR2026

Intern Backend Developer Confidence: Medium Distributed Systems

A Java developer and student-level practitioner focused on socket-based client-server programming with hands-on experience building basic TCP protocols. The strongest proven skill is implementing simple TCP clients and servers with both binary (DataInputStream/DataOutputStream) and text protocols and basic DTO serialization. There is no evidence of testing, concurrent/multi-client servers, database integration, production-grade observability or security hardening in public code.

API Design

2/10

How well APIs are designed

Minimal custom protocol work: simple binary and line-based TCP protocols with basic validation and error messages but no versioning, stable error contract, idempotency or pagination strategy.

Evidence

TP1-DAR2026/src/serverPackage/Server.java

TP2-DAR2026/src/serverPackage/Server.java

TP2-DAR2026/src/activite2/Client.java

Data Layer & Database

Working with databases

Not evidenced in public code

Scalability & Performance

1/10

Handling load and speed

No scalability or performance engineering: single-threaded accept loop, no threading/worker pool, no caching, no connection pooling or async IO.

Evidence

TP1-DAR2026/src/serverPackage/Server.java

TP2-DAR2026/src/serverPackage/Server.java

TP2-DAR2026/src/activite2/Server.java

System Architecture

2/10

Overall system structure

Clear but trivial package separation and a small DTO (Operation) show basic modularity for exercises but not a reasoned service decomposition or config/secret management.

Evidence

TP2-DAR2026/src/activite2/Operation.java

TP2-DAR2026/src/clientPackage/Client.java

TP2-DAR2026/src/serverPackage/Server.java

Security & Auth

2/10

Protecting data and access

Basic input validation and defensive checks exist (regex validation, NumberFormatException handling, division-by-zero checks) but there is no authentication, authorization, secrets handling or dependency audit evidence.

Evidence

TP2-DAR2026/src/activite2/Client.java

TP2-DAR2026/src/activite2/Server.java

TP1-DAR2026/src/clientPackage/Client.java

Reliability & Observability

2/10

Stability and monitoring

Some use of try-with-resources and exception catching provides minimal reliability; there is no structured logging, timeouts, retry/backoff, graceful shutdown or observability integration.

Evidence

TP1-DAR2026/src/serverPackage/Server.java

TP2-DAR2026/src/serverPackage/Server.java

Verified artifacts

BolbolInfo/cash-pilot· contrib

Expertise

Java· Intern

Technologies

Spring Boot

Recommendations

Develop educational or prototype networked applications and teaching demos that exercise TCP protocols and Java IO.
Extend these programs to handle multiple clients (thread pool or non-blocking IO), add unit/integration tests, and add structured logging and timeouts.
Practice production patterns: introduce a persistence layer, input sanitization, authentication, and basic observability (metrics/logging) for real-world readiness.

Repositories

The developer's experience in this domain has been verified based on AI analysis of the following repositories:

TP1-DAR2026 TP2-DAR2026 YoussefBelghith455