{ "basics": { "name": "Walid Karray", "label": "Freelance **Hands-On Solutions Architect** · AWS · GenAI", "image": "/avatar.jpg", "email": "walid.karray@gmail.com", "url": "https://cv.axforge.net/", "summary": "Hands-on solutions architect with a **product mindset**: I design architectures **and build them**, from idea to production, and I measure them by the user outcomes and business value they deliver. In **16+ years** I've done it on both sides of the table: consulting for Fortune 500s, and as co-founder CTO scaling a startup to **1M+ users** (official ticketing provider for **AFCON 2023**). Today I ship **Generative AI that runs real business processes** (multi-agent systems, RAG and LLM orchestration in production at enterprise scale), on deep foundations in **AWS serverless**, event-driven architecture and IaC. AWS Certified Solutions Architect. Open to freelance missions.", "location": { "city": "Paris", "countryCode": "FR" }, "x_availability": "Remote-friendly", "profiles": [ { "network": "LinkedIn", "username": "karray", "url": "https://www.linkedin.com/in/karray/" }, { "network": "GitHub", "username": "tux86", "url": "https://github.com/tux86" }, { "network": "Medium", "username": "walid.karray", "url": "https://medium.com/@walid.karray" } ] }, "work": [ { "name": "TotalEnergies", "position": "Hands-On Solutions Architect", "location": "Île-de-France, France · Full remote", "startDate": "2023-11", "highlights": [ "**DAIA**: GenAI pipeline (**GPT models** via the group's internal LLM platform, integrated with **SAP Datasphere**) that checks every purchase request against procurement policy and approves the compliant ones automatically, removing manual review and unlocking **~€2M/year in savings**.", "**Synaps**: enterprise GenAI assistant with **multi-agent orchestration**, featuring an autonomous agent driving **SAP with zero manual intervention** and **natural-language querying across 5 databases** via RAG.", "Both products run on the **multi-tenant serverless platform I architected** (Lambda, API Gateway, EventBridge, SQS): TypeScript backend, Python execution engine, a catalog of **50+ step handlers** reused org-wide.", "Built the CI/CD pipeline for the **SAP Fiori/UI5** applications: automated build and deployment, integrated with **ServiceNow** change management.", "E2E test suite covering multi-tenancy, RBAC and resource sharing; CI/CD (GitHub Actions) with blocking security scans (**Checkmarx, Semgrep**)." ] }, { "name": "SNCF Connect & Tech", "position": "Cloud Engineer · AWS Serverless", "location": "Paris · Hybrid", "startDate": "2022-09", "endDate": "2023-11", "highlights": [ "Contributed to the development of the next-gen audio-visual broadcasting system for train stations, on real-time AWS serverless: rolled out to **every SNCF station with zero downtime**, reaching **21M+ travelers** nationwide.", "Designed the testing strategy (unit, integration, automated, load) and the acceptance criteria enforced with the QA team, the groundwork behind the zero-downtime rollout." ] }, { "name": "Maxeon Solar Technologies", "position": "AWS Solutions Architect", "location": "Full remote", "startDate": "2022-07", "endDate": "2022-09", "highlights": [ "Architecture mission for a global solar-panel manufacturer: **serverless-first AWS migration** of the platform serving **5 international markets**, cutting infrastructure costs and unlocking scale.", "Unified **Okta SSO**, **Salesforce CRM**, AlphaESS and **Net2Grid IoT** energy data into a single platform, with seamless data flows across systems." ] }, { "name": "Ticketchainer", "position": "CTO & Co-Founder", "location": "Paris · Hybrid", "startDate": "2019-08", "endDate": "2022-07", "x_tag": "startup", "highlights": [ "White-label B2B2C sports-ticketing SaaS, built from scratch as co-founder CTO with a **Lean Startup** approach: **1M+ users** and **10M+ tickets sold** in three years.", "Architected the serverless AWS stack, designed to auto-scale across client organisations.", "Official ticketing provider for **AFCON 2023**: the platform held **350K daily peak connections** and 25K tickets sold per day.", "Raised seed funding, grew the engineering team from **2 to 20**, and reached **40+ client organisations** (Betclic Group, AC Ajaccio, CAF)." ] }, { "name": "France Médias Monde", "position": "Full-Stack Developer & Technical Referent", "location": "Issy-les-Moulineaux", "startDate": "2016-12", "endDate": "2020-06", "highlights": [ "Contributed to the development of the editorial SaaS CMS **adopted by 4 international newsrooms** (France 24, RFI, MCD, Observers) publishing in **22 languages**.", "Backend development of **InfoMigrants** (FMM × Deutsche Welle × ANSA, EU co-financed): verified news for migrants in **6 languages**, mobile-first, read by millions." ] }, { "name": "France Télévisions", "position": "Full-Stack Developer", "location": "Issy-les-Moulineaux", "startDate": "2016-04", "endDate": "2016-12", "highlights": [ "Delivered the **REST API and microservices backbone** for the digital platforms, with PoCs (SonarQube, MongoDB) that set the move to a microservices architecture." ] }, { "name": "RATP Smart Systems", "position": "Full-Stack Developer", "location": "Noisy-le-Grand", "startDate": "2015-05", "endDate": "2016-04", "highlights": [ "Built the backend API of \"Visitez Paris en métro\", RATP's public guide to exploring Paris by metro.", "Built Python pipelines extracting and transforming the rail network's logs into statistical datasets published for the general public." ] }, { "name": "Hub-Scan Inc", "position": "Backend Developer (PHP)", "location": "Greater Paris", "startDate": "2012-12", "endDate": "2015-04", "highlights": [ "Built the backend and REST APIs (CodeIgniter framework), and wrote the technical documentation, for the redevelopment of Hub'Scan, a SaaS platform that audits and validates digital analytics and marketing tags at scale." ] }, { "name": "Tritux Group", "position": "Full-Stack Developer", "location": "Tunis, Tunisia", "startDate": "2010-03", "endDate": "2012-11", "highlights": [ "Built enterprise web applications (Java JEE, PHP) for public-sector, telecom and banking clients, at an official RedHat partner." ] } ], "education": [ { "institution": "ISET Djerba", "area": "Networking of IT & Telecom Systems", "studyType": "BTS", "startDate": "2006", "endDate": "2010" } ], "certificates": [ { "name": "AWS Certified Solutions Architect – Associate", "date": "2023" }, { "name": "OCJP 6 · Oracle Certified Java Programmer", "date": "2011" } ], "skills": [ { "name": "Cloud & AWS", "keywords": [ "Serverless", "Lambda", "API Gateway", "EventBridge", "SQS", "AppSync / GraphQL", "Cognito", "Aurora PostgreSQL", "event-driven architecture" ] }, { "name": "Generative AI", "keywords": [ "AWS Bedrock", "multi-agent orchestration", "RAG", "LLM orchestration", "OpenRouter", "Text-to-SQL", "AWS Textract", "vector search (MongoDB Atlas)" ] }, { "name": "Languages & runtimes", "keywords": [ "TypeScript", "Node.js", "Bun", "Python" ] }, { "name": "IaC & DevOps", "keywords": [ "Terraform", "CI/CD (GitHub Actions)", "Docker", "LXC", "Proxmox VE / PBS", "security scanning (Checkmarx, Semgrep)" ] } ], "languages": [ { "language": "French", "fluency": "Native / Bilingual" }, { "language": "English", "fluency": "Fluent · daily working language" }, { "language": "Arabic", "fluency": "Native / Bilingual" } ] }