Bacem Hmoudi Tech Lead and Senior Full-Stack Developer Java / PHP · AI, based in Tunis

Tech Lead and Senior Full-Stack Developer at TEAMWILL, in Tunis. 9 years of Java / Spring Boot and PHP / Symfony on business software: ERP, document management, CRM and invoicing, portals and distribution software. And AI at the heart of my recent projects.

9 years of full-stack development, from writing the code to leading projects technically: software suites, ERP, document management, CRM and invoicing, portals, with AI in production.

Programming languages

• Java 8 to 21
• PHP 7 and 8
• TypeScript
• JavaScript ES6+
• SQL
• HTML5 and CSS3
• Bash and Python for tooling

PHP since 2017, Java in production since 2022 at TEAMWILL; TypeScript across every interface of my side project.

Back-end

• Spring Boot 3
• Spring Security
• Spring Batch
• Spring Cloud Gateway
• JPA / Hibernate
• Resilience4j
• MapStruct
• Symfony 3 to 6
• REST and SOAP APIs
• OpenAPI / Swagger
• WebSocket

Spring Boot on e‑Flo and the RRG portal, and in the 14 services of my side project; Symfony at iotech, Interactions, IT Concept and on the ALD project.

Front-end

• Vue.js 2 and 3
• Angular
• React 19
• Next.js 16
• Tailwind CSS
• TanStack Query
• Zod
• i18n, Arabic RTL
• Chrome extension (Manifest V3)
• jQuery
• Bootstrap

Vue.js since 2019 (Interactions, IT Concept, e‑Flo); React and Next.js in my side project: more than 200 screens, in five languages.

Mobile

• React Native
• Expo
• Expo Router
• NativeWind
• On‑device OCR (ML Kit)
• Offline mode
• Biometrics
• Push notifications

A 55-screen iOS and Android app in my side project, signed in through OpenID Connect.

Architecture

• Microservices
• Hexagonal architecture
• DDD
• Clean Architecture
• Event-driven architecture
• Transactional outbox and inbox
• Idempotency
• Multi-tenant SaaS
• API Gateway
• Workflow and rules engine

DDD at IT Concept, microservices on e‑Flo; all of it together in my side project, with one PostgreSQL schema per client.

Data and messaging

• PostgreSQL
• MySQL
• Oracle
• SQL Server
• MongoDB
• Redis
• Elasticsearch
• Kafka
• RabbitMQ
• Flyway
• MinIO (S3)

Elasticsearch and RabbitMQ on the ALD document management system, MongoDB at RRG, PostgreSQL and Redis on e‑Flo; 51 Kafka topics and more than 550 Flyway migrations in my side project.

Cloud, DevOps and infrastructure

• Microsoft Azure
• AWS
• Docker
• Docker Compose
• Kubernetes
• Terraform
• GitLab CI/CD
• Jenkins
• GitHub Actions
• Prometheus and Grafana
• Cloudflare
• Linux

More than 15 applications migrated to Azure at Stellantis; in my side project, 17 Docker images, automated deployment and rollback, Prometheus and Grafana monitoring.

Security and identity

• Spring Security
• Keycloak
• OAuth 2 and OpenID Connect
• JWT
• RBAC and data scopes
• Secret encryption
• SSRF protection
• Audit log
• GDPR

Secured REST APIs at TEAMWILL; Keycloak, 12 roles and access control at the gateway in my side project.

AI and LLMs

• Anthropic Claude
• Mistral
• Ollama
• OpenAI API
• LangChain
• TensorFlow
• Structured outputs, JSON Schema
• OCR: Tesseract, OCRmyPDF
• Document analysis
• Chatbots
• Semantic search, RAG
• NLP, machine learning

LangChain and the OpenAI API in production on e‑Flo since 2024; three providers behind a single interface in my side project.

Quality and testing

• TDD
• JUnit 5
• Mockito
• Testcontainers
• JaCoCo
• PHPUnit
• Jest
• Vitest
• Playwright
• k6 load testing
• Code review
• Acceptance test plans

80% coverage at IT Concept, 85% on the ALD project; more than 10,000 automated tests in my side project.

Tools

• Git
• GitLab
• GitHub
• Gradle
• PhpStorm
• Postman
• Claude Code and coding agents

Methods and technical leadership

• Scrum
• Agile
• Costing and estimation
• Leading and training developers
• Client workshops
• Technical documentation
• Production releases
• Scrum Fundamentals Certified
• Negotiation Associate (NASBA)

Tech Lead at TEAMWILL since 2022; three junior developers trained at IT Concept.

Languages

• Arabic, native
• French, full professional proficiency
• Technical English

1. Since 2022

   Tech Lead and Senior Full-Stack Developer

   TEAMWILL, Tunis

   Main technical contact for the company’s departments and guarantor of delivery quality, on software suites, portals, a document management system and a cloud migration.

   • Analysing needs and recommending the right technical solutions
   • Defining target solutions for consistent, stable systems
   • Estimating and costing projects, keeping to deadlines and workloads
   • Supporting and leading developers, following their progress
   • Code quality and compliance, technical documentation, sign-off of acceptance test plans
   • Technology watch and proposals on the company’s technologies

2. Since 2024

   e‑Flo · AI and interfaces

   Groupe GEMY, Groupe BODEMER, automotive sector

   New automotive distribution software suite, the successor to Efficom.

   • Full AI integration: automated document analysis with OCR, conversational chatbot, semantic search
   • Existing data put to work by machine-learning algorithms: business recommendations and predictions
   • Scalable microservices architecture, complex business interfaces, secured REST APIs
   • Interfaces with external software vendors, workshops with the client
   • −60% response time, real-time monitoring and automated alerting

   StackJava 17Spring Boot 3Vue.js 3OpenAI APILangChainPostgreSQLDockerKubernetesRedis

3. 2022-2024

   Renault Group Retail project

   Renault Retail Group

   • RRG France networks, working autonomously: more than 500 points of sale, more than 1,000 daily active users
   • Major upgrades to the Efficom Portal: new modules, UX and performance
   • REST and SOAP web services to Renault France’s information system, ERP integration
   • Coordinated go‑lives at every release, with no service interruption

   StackJava 11Spring BootPHP 7MySQLMongoDBREST / SOAPJenkinsDocker

4. 2023

   Migration to Microsoft Azure

   Stellantis France

   • On‑premise infrastructure migrated to Azure: −70% server resources
   • More than 15 legacy applications containerised with Docker and orchestrated by Kubernetes
   • GitLab CI/CD pipelines, infrastructure as code with Terraform
   • −40% monthly cloud budget, 99.9% availability

   StackAzureDockerKubernetesTerraformGitLab CI/CDJavaPHPAzure Monitor

5. 2023

   ALD Automobile

   Emil Frey, Stellantis, ALD Automobile

   • Multi-account web services: real-time data synchronisation between three entities of the group
   • Complete document management system: digital archiving, indexing, full-text search, document versioning
   • Connected data flows, real-time dashboards, automated reporting
   • Legacy code refactored: −30% technical debt, 85% test coverage

   StackPHP 8Symfony 6JavaRESTElasticsearchRabbitMQMySQL

6. 2020-2022

   Senior Full-Stack Developer, PHP / JavaScript

   IT Concept, Tunis

   • ERP designed from scratch: human resources, inventory, invoicing, accounting
   • Modular Symfony architecture in DDD, business logic decoupled from the technical layers
   • UX mock-ups, Vue.js single-page front end, REST API back end
   • Automated PHPUnit and Jest tests: 80% coverage, GitLab continuous integration
   • Trained three junior developers, code reviews, technical documentation

   StackPHP 8Symfony 5Vue.js 3PostgreSQLDockerGitLab CIRedis

7. 2019-2020

   Experienced PHP Developer

   Interactions, Tunis

   • Organisational applications for the public sector: scheduling, human resources, contractors, events
   • Reporting modules and decision-making dashboards
   • Ongoing maintenance and enhancements, refactoring and framework upgrades

   StackPHP 7Symfony 4Vue.jsMySQLjQueryBootstrap

8. 2017-2019

   PHP Developer

   iotech, Tunis

   • SMARTDYL: a complete application built autonomously, from requirements analysis to deployment
   • ELITE-AUTO: e‑commerce site, framework upgrade, catalogue, cart, online payment and orders
   • Third-party API integration, functional testing, user documentation

   StackPHP 7Symfony 3 and 4MySQLJavaScriptStripe APIBootstrap

ERP, document management, CRM and invoicing, portals, e‑commerce: since 2017, I have been building management software for very different businesses.

• Business management (ERP)

  An ERP designed from scratch at IT Concept: human resources, inventory, invoicing and accounting, in DDD.

• Document management and archiving

  A complete document management system on the ALD project: digital archiving, indexing, full-text search, versioning. Then OCR and AI‑driven document analysis.

• CRM, sales and invoicing

  Sales pipeline, lead scoring, quotes, invoices and credit notes, payment reminders, accounting exports and Factur-X e‑invoicing, in my side project.

• Distribution and dealer networks

  Software suites and portals for automotive distribution groups, leasing companies and manufacturers: more than 500 points of sale, interfaces with software vendors and partners’ information systems.

• Public sector

  Scheduling, human resources, contractors and events for public administrations, with their decision-making dashboards.

• E‑commerce

  Catalogue, cart, online payment with the Stripe API and order management.

• Cloud and modernisation

  Legacy applications migrated to Azure, containerised and automated: −70% server resources, 99.9% availability.

• TEAMWILL
• IT Concept
• Interactions
• iotech
• Groupe GEMY
• Groupe BODEMER
• Renault Retail Group
• Stellantis
• Emil Frey
• ALD Automobile
• Elite-Auto

The AI I put into production is wired into real business data, measured, cost-controlled, and always under human oversight.

• Provider-independent

  One interface, three adapters: Anthropic, Mistral to keep data in Europe, Ollama for local models. The provider is chosen per client and per entity, across several levels.

• Costs under control

  Monthly token quotas per client and a usage log per feature, visible in the admin console.

• Reliable document extraction

  PDF purchase orders read as text, or as images when the text is missing. Output validated against JSON Schema with one repair attempt, then checked against the document’s text and arithmetic. Versioned prompts and mandatory human validation: nothing is created automatically.

• An AI that writes its own rules

  On partner web portals, the model proposes parsing rules from anonymised samples. They are kept only once validated, replayed, and proven better than a rule-based version.

• Smart scanning

  OCRmyPDF and Tesseract, barcode reading, then each scan matched to its order and its document type.

• Business assistants

  CRM: lead scoring, next best action, drafts, intent, urgency and objections. Streaming support chatbot, on‑device OCR on mobile.

• Inside enterprise workflows

  A workflow engine with SLAs and approval circuits, 51 Kafka topics and a transactional outbox: AI fits into reliable, multi-tenant processes.

• At TEAMWILL, on e‑Flo

  Document analysis with OCR, a conversational chatbot, semantic search and machine-learning recommendations, with LangChain and the OpenAI API.

• Next step

  RAG on pgvector and tool-using AI agents, under study.

• Anthropic
• Mistral
• Ollama
• OpenAI API
• LangChain
• OCR
• JSON Schema
• Kafka

• Business first

  I take part in the workshops with the client: a good technical solution starts with a well-understood need.

• Hexagonal architecture and DDD

  The domain at the centre, shielded from the framework and the infrastructure. Ports describe the needs; adapters plug them in.

• Microservices, without dogma

  Split when the domain and the team justify it, not before. Events and message queues when the flows call for them.

• AI wired into the business

  OCR and document analysis, chatbots, semantic search and RAG on the company’s real data, with LangChain and the OpenAI API. Not a demo: a feature in production.

• Robust interfaces

  Reliable REST and SOAP web services between software suites, ERPs, external vendors and partner information systems. Configurable connectors (REST, SOAP, SFTP, webhooks) with retries, a circuit breaker and an error queue.

• Multi-tenant by design

  One PostgreSQL schema per client, permissions checked on the server, configuration inherited across several levels: one product for very different clients, without a fork.

• Measure, then optimise

  −70% server resources at Stellantis, −60% response time on e‑Flo, real-time monitoring and alerting.

• Industrial-grade quality

  TDD and Clean Architecture, 80 to 85% test coverage, CI/CD and infrastructure as code, releases with no downtime.

I also write about these topics: microservices versus monoliths, PHP 8 versus Node.js, feature flags with Symfony, CQRS.