Freelancer profile translated to English.
Back to original languageAbout Saqib
Are you looking for a developer who doesn't just write code, but understands, integrates, and deploys systems? Then you've come to the right place.
I am a Full Stack Developer & DevOps Engineer from Essen, NRW — specializing in backend systems, REST APIs, ERP integrations, and AI infrastructure for German SMEs and corporations.
What sets me apart: I developed and deployed Germany's first Lexware Office Connector for a logistics ERP live — automated invoicing, real-time payment reconciliation, bidirectional data synchronization. Not a proof of concept, but actual production operation.
Furthermore, I bring direct project experience in AI infrastructure: hybrid architecture, RAG systems, vector databases, and cloud AI integration into existing corporate workflows.
Projects I undertake:
- REST API Development & System Integration
- ERP Connection & Process Automation
- DevOps, CI/CD Pipelines & Cloud Deployment
- AI Workflow Integration & RAG Implementation
- GIS Data Processing & Infrastructure Planning
I work remotely and on-site in NRW — in German and English.
German
Native or bilingual
English
Native or bilingual
Urdu
Native or bilingual
Remote only
Primarily works remotely
Experience
- Öztep Transporte GmbHSolution ArchitectLOGISTICS AND SUPPLY CHAINJune 2024 - Today (2 years and 1 month)Essen, GermanyAs a Solution Architect at Öztep Transporte GmbH, responsible for the setup and operation of the entire IT infrastructure surrounding the logistics ERP system Logistiklogs.Core tasks & results:
- Development and deployment of the first Lexware Office Connector for a logistics ERP system in Germany — live in production
- System Design & Architecture: End-to-end integration between Logistiklogs ERP and Lexware Office (automated invoicing, payment reconciliation, customer data synchronization)
- CI/CD pipelines built and managed with automated build, test, and deployment processes
- DevOps Infrastructure: Server setup, containerization, monitoring, and logging
- Security & Compliance: Access rights, data encryption, GDPR-compliant data storage, and system hardening
- Cloud deployment and operation of the production system environment
Technology Stack: Node.js, REST API, Docker, Git, Lexware Office APIThe system runs daily in production, automating the company's entire accounting and billing process. - Iqony GmbHDigitalization & ComplianceENERGY AND UTILITIESJanuary 2024 - May 2025 (1 year and 4 months)Essen, GermanySetup and further development of an internal AI infrastructure based on a hybrid architecture — combination of own on-premises infrastructure and selective cloud connection.Tasks & results:
- Expansion and optimization of the vector database for improved semantic search performance across internal knowledge data
- Improvement of vector embeddings for more precise context recognition and response quality of the AI system
- Development of a hybrid RAG system with selectable knowledge source: internal company knowledge or web search, or a combination of both
- Orchestration of the AI pipeline (Retrieval → Augmentation → Generation) as well as systematic testing and quality assurance of the outputs
- Adaptation and integration of cloud AI services into the hybrid architecture to support internal AI workflows
- Setup of a separate customer database dashboard for the marketing team — data aggregation, filtering, and visualization of relevant KPIs
- Customer data integration and structured preparation for marketing analytics
- Gasline CPRoute Planning & ERP Monitoring for FTTH Fiber Optic ConstructionTELECOMMUNICATIONSJanuary 2022 - January 2023 (1 year)Essen, GermanyActivity in the IT department of Gasline CP as part of the FTTH fiber optic expansion project.Tasks & Responsibilities:
- Monitoring and operation of the central ERP system during the ongoing infrastructure project
- Creation and maintenance of digital route plans with ArcGIS for construction management
- Preparation of georeferenced data to support project coordination in fiber optic network expansion
- Interface between IT infrastructure and construction management team — technical data prepared in a practical way for non-IT teams
- Quality assurance of GIS data for network planning and documentation
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Education
- Software Engineering B.ScUniversity of Duisburg-Essen2026