Hamza Mounir
Senior Software Engineer | Scalable Systems | Cloud Architecture | AI Systems | Technical Leadership
Pixl SRL
BE 0805.449.693
Senior Software Engineer with 8+ years of experience designing scalable platforms, microservice architectures, and cloud-native systems. I specialize in building reliable infrastructures that allow companies to scale from early startup stages to enterprise-grade platforms.
My expertise spans backend architecture, distributed systems, DevOps automation, and AI-powered applications. I build systems that are resilient, automated, and operationally efficient, reducing friction for both engineering teams and business operations.
On the frontend, I deliver high-performance web applications using React and Next.js, focusing on user experience, accessibility, and seamless integration with complex backend services and AI-driven systems.
I also design and deploy AI-powered solutions, including LLM-based services, retrieval-augmented generation (RAG), vector search, and context-aware systems. I build infrastructure to optimize token usage, manage streaming responses, and integrate intelligent automation into production environments.
Beyond coding, I actively improve engineering processes, development workflows, and team collaboration, mentoring engineers and ensuring teams can deliver faster with higher reliability.
Feen
AI Accounting PlatformAI-powered accounting assistant for Belgian SMEs, helping entrepreneurs manage invoices, transactions, and financial insights in a single platform. Automates financial administration by combining document extraction, reconciliation, dashboards, and accounting collaboration tools.
- Designed and built the full SaaS architecture
- Developed AI-powered financial document extraction
- Implemented automatic transaction reconciliation
- Built dashboards providing real-time financial insights
- Integrated Peppol readiness and company verification tools
- Developed scalable backend APIs and data pipelines
- Implemented LLM workflows for data processing and automation
PIXL
AI Engineering PlatformEnd-to-end platform for AI-native software delivery — an orchestration engine, agent crew, RAG knowledge base, and evaluation harness, published to PyPI. Also delivered as AI-engineering workshops and enablement for companies.
- DAG-based orchestration engine with multi-provider LLMs (Anthropic, OpenAI, Gemini), an event bus, cost tracking, and session resume
- FastAPI service (140+ endpoints, JWT auth, SSE / WebSocket streaming) and a React console with real-time session and DAG visualization
- Claude Code crew plugin — 14 specialized agents, 75+ skills, MCP tool servers, and an evaluation harness — over an FTS5 / vector RAG knowledge base
- Sandboxed execution (Cloudflare Workers), quality gates, RBAC governance, and automated recovery / rollback for AI-generated code
Pizza Roma
Restaurant POS & Online Ordering PlatformEnd-to-end digital platform for a Brussels pizzeria — public site, online ordering, in-store cashier / POS, delivery app, and admin dashboard.
- Full-stack Next.js / TypeScript application on PostgreSQL + Prisma with role-based access (admin, cashier, customer, delivery)
- Stripe payments (PaymentIntent, webhooks, 3D Secure) and transactional email, with a persistent cart and bilingual (FR / NL) storefront
- In-store cashier / POS and order-management surfaces, a delivery-driver app, and a real-time admin dashboard
Backend & Architecture
- TypeScript
- Python
- Node.js
- NestJS
- FastAPI
- SQLAlchemy
- gRPC
- REST
- GraphQL
- Microservices
- Event-Driven
AI Engineering
- LLM Integration
- RAG
- Vector Search
- MCP Tool Servers
- Multi-Agent Orchestration
- Prompt Engineering
- Streaming
- Token Optimization
- Guardrails
Frontend
- React
- Next.js
- TypeScript
- TailwindCSS
- SSR / ISR
- WCAG / ARIA
- Responsive
DevOps & Data
- Azure
- GCP
- AWS
- Docker
- Kubernetes (AKS)
- Azure DevOps
- GitHub Actions
- CI/CD
- Terraform
- RabbitMQ
- Celery
- PostgreSQL
- MongoDB
- Redis
- pgvector
AI Systems Engineer
Belfius · July 2025 - Present
Building AI systems within the strict constraints of a regulated bank — taking experimental AI technology and making it production-ready, secure, and compliant. Working closely with Architecture teams to ensure everything meets banking standards.
- Designed retrieval systems that let LLMs access bank knowledge safely, using vector databases and hybrid search
- Set up Azure infrastructure (AKS, Azure DevOps pipelines) with proper security controls — managed identities, encryption, zero-trust policies
- Created FastAPI services that connect AI models to enterprise data while maintaining strict access controls
- Built AI agents that automate internal operations previously requiring manual work
Senior Software Engineer
Cohabs · April 2025 - June 2025
Built a scalable payments service handling all edge cases, mirroring transactions to the financial tools used by the finance department for accounting and payment consolidation.
- Integrated third-party APIs for communication with accounting tools
- Enhanced event-driven workflows with error management and queue processing
- Handled migration between growing services and evolving requirements
- Improved reliability and tracing between departments
Senior Software Engineer
Greenomy · Jan 2024 - April 2025
Built a scalable SaaS platform while improving engineering workflows. Focused on scalability, process automation, and system reliability in a growing platform.
- Automated CI/CD pipelines on Azure DevOps, improving deployment speed and reliability
- Introduced better development workflows, monitoring tools, and debugging strategies
- Mentored engineers, reducing friction in problem-solving and improving productivity
- Created features based on business needs with auto-scalable solutions
Senior Software Engineer
Qover · 2017 - 2024
Part of the early technical team, helping transform Qover from a 13-person startup to a 150+ employee scale-up. Worked across all major systems ensuring the platform was scalable, automated, and built for long-term success.
- Built authentication, third-party integrations, pricing models, claims automation, and compliance systems (Node.js / NestJS microservices)
- Developed whitelabel insurance solutions for easy partner onboarding at scale
- Created contract automation, bordereau generation, financial reconciliation, and RabbitMQ-driven notification workflows
- Helped migrate and optimize cloud infrastructure from AWS to GCP with high availability
- Built the foundation of a platform still running successfully at scale today
Internship
Emakina · 2017
Developed a digital signage platform for real-time content display across multiple screens.
- Integrated live data feeds including weather, schedules, and news updates
- Optimized secure authentication and data access processes
- Implemented real-time content synchronization across displays
Bachelor in Computer Science
Institut Paul Lambin, Brussels · 2014 - 2017
Languages
French
Native
English
Professional
I'm always open to discussing new projects, opportunities, or partnerships. Feel free to reach out.