Acceptance Criteria

Curriculum Vitae Aleksandar Stajić

Curriculum Vitae Aleksandar Stajić

Technical Product & Platform Architect combining hands-on full-stack engineering, AI integration, enterprise delivery and project management across web platforms, databases, APIs, Linux infrastructure, technical SEO, multilingual publishing and production operations.

Aleksandar Stajić

Technical Product & Platform Architect | Hands-on Software Engineering, AI Integration & Delivery

Munich Area, Germany

Professional Profile

Hands-on technical product and platform professional combining software architecture, full-stack implementation, AI integration and structured project delivery. More than two decades of IT work across web applications, databases, infrastructure, digital publishing, technical SEO, networking and production operations.

Professional work bridges product and business requirements with implementation: from requirements and delivery structure through architecture, database and API design, frontend development, AI integration, deployment, search visibility and ongoing operation. Formal project and delivery competence is supported by the IPMA® Level D – Certified Project Management Associate certification and the Professional Scrum Master I (PSM I) certification.

Independent platform work includes stajic.de, loving.rocks, figure.rocks and related technical projects. These platforms provide practical environments for architecture, multilingual publishing, SEO, AI-assisted workflows, database-backed applications, deployment and production engineering.

Core Expertise

  • Technical Product & Platform Architecture: Translating product needs into system boundaries, data structures, APIs, application flows and operational requirements.
  • Full-Stack Engineering: Frontend, backend, database and integration work across modern web platforms.
  • AI Integration: Local and cloud model integration, OpenAI/Codex workflows, Ollama and local LLM environments, RAG-oriented workflows and AI-assisted application features.
  • Enterprise Delivery & Project Management: Requirements, project planning, milestones, risks, acceptance criteria, change, validation and operational readiness.
  • Scrum & Iterative Product Delivery: PSM I-certified Scrum knowledge with a focus on Product Backlog structure, Sprint execution, empirical delivery and usable increments.
  • Data & Search Architecture: Relational and NoSQL databases, structured data, search indexing and metadata-driven applications.
  • Infrastructure & Operations: Linux, web servers, deployment, networking, troubleshooting and production maintenance.
  • Technical SEO & Multilingual Platforms: Information architecture, canonical and multilingual structures, structured publishing, search visibility and content distribution.
  • Technical Documentation & Traceability: Architecture documentation, requirements, decisions, project knowledge and implementation evidence using structured collaboration tools.

From Product Need to Production Operation

A recurring professional pattern is the ability to connect multiple delivery layers rather than treating them as isolated disciplines.

BUSINESS / PRODUCT NEED ↓
REQUIREMENTS ↓
PROJECT / DELIVERY STRUCTURE ↓
ARCHITECTURE ↓
DATABASE / API ↓
FRONTEND ↓
AI INTEGRATION ↓
DEPLOYMENT ↓
SEO / DISTRIBUTION ↓
PRODUCTION OPERATION

This range is particularly relevant in projects where architectural decisions must remain connected to implementation and where technical work must stay understandable to product, project and business stakeholders.

Professional Experience

Independent IT Service Provider / Web Application Developer

Munich, Germany | 2004 – Present

Independent technical work across database systems, software development, web applications, server administration and digital platforms, with an increasing focus on web application and platform engineering.

  • Web application and platform development
  • Database architecture and integration
  • Linux and web-server administration
  • API and backend implementation
  • Technical SEO and structured publishing
  • AI-assisted development and application workflows
  • Deployment, maintenance and troubleshooting
  • Technical analysis and project structuring

Full-Stack Developer / IT Staff Member — Deutsches Museum Digital

Deutsches Museum, Munich | October 2016 – January 2023

Work on the digital and scientific accessibility of museum collections, archive and library resources through a combined full-stack, metadata and infrastructure role.

  • Frontend and backend web development
  • JavaScript, Node.js, Webpack and CSS
  • Python and Django environments
  • OpenSeadragon and IIIF server/client integration
  • Three.js and visual/interactive interfaces
  • Solr, MySQL, SQLite, PostgreSQL and MongoDB
  • Metadata mapping and integration using LIDO, EAD and METS/MODS
  • JPEG2000 and image-delivery workflows
  • Photogrammetry and digital object work
  • Apache and NGINX server environments
  • Git-based deployment workflows and Docker
  • Applied TensorFlow experimentation
  • UI/UX implementation and optimization

The role combined software engineering with cultural heritage metadata, search infrastructure, image standards and long-term digital access.

Freelance IT Specialist

Various Clients, Munich | October 2015 – October 2016

Freelance technical work across application development, database maintenance, SEO and project-oriented implementation.

  • Full-stack application development
  • Database maintenance
  • SEO and technical optimization
  • Technical analysis
  • Quality assurance
  • Technical project coordination

Software & Database Developer

RankNet, Munich | March 2012 – May 2015

Development of web applications, databases and customer-facing interfaces with responsibility spanning implementation, data structures, quality assurance and technical coordination.

  • PHP, MySQL, JavaScript, HTML and CSS
  • Web application and database development
  • Customer interface implementation
  • WordPress, TYPO3 and Joomla
  • WooCommerce and Magento
  • Quality assurance
  • Technical project management

Head of Database & Software Development

Agentur089 GmbH, Munich | March 2009 – November 2011

Work on database-driven marketing and software systems combining backend development, data architecture, system integration and server administration.

  • Development and operation of customer-data tooling for marketing campaigns
  • PHP, MySQL, HTML, CSS and JavaScript
  • Database design and interface management
  • Apache, Maildrop, Postfix and Linux/Ubuntu administration
  • Data-cube creation and analytical processing

Freelancer — System Administration & Technical Support

Munich | September 2005 – March 2009

Independent system administration, infrastructure support and application work for professional and business environments.

  • Support for medical practices and business software including AGENDA and SAGE
  • WAN, LAN, VPN, proxy and firewall administration
  • Windows Server, Exchange, file and print services
  • GUI and web-interface development using HTML, JavaScript, CSS, PHP and C#
  • Search engine marketing and optimization

IT Support Specialist

Vodafone D2 / Arcor Customer Network Environment | August 2004 – August 2005

Network and technical support for Arcor customer environments, with a focus on connectivity, routing and client-side infrastructure.

  • DSL and ISDN connectivity
  • LAN, DNS and router configuration
  • VPN troubleshooting
  • Backup solutions using NAS and scheduled processes

Earlier Technical Career

Earlier professional work included technical and construction-related roles, including construction/site supervision, independent interior construction work and CNC manufacturing. This technical background preceded the transition into networking, database systems and software development.

Selected Platforms & Product Work

stajic.de — Technical Platform, Portfolio & Enterprise Knowledge System

stajic.de serves as the primary technical platform and professional publishing environment. The platform combines software engineering, AI, architecture, implementation case studies and structured enterprise delivery knowledge.

The platform functions as both a public technical property and a practical environment for testing architecture, publishing systems, AI-assisted workflows, SEO structures and delivery concepts.

  • Platform and information architecture
  • Nuxt-based frontend implementation
  • Node/Nitro backend and API concepts
  • Prisma and PostgreSQL
  • Structured EditorJS publishing
  • Multilingual content architecture
  • Technical SEO and search-engine integration
  • AI-assisted content and engineering workflows
  • Linux and NGINX deployment
  • Production troubleshooting, performance and stability work

The Enterprise area extends the platform into structured knowledge around delivery, change, AI adoption, architecture, operational readiness, playbooks, runbooks and implementation-oriented reference models.

loving.rocks — International Wedding & Lifestyle Platform

loving.rocks is an international publishing and product-platform concept organized around semantic content structures, multilingual publishing and SEO Pillars.

Technical work includes structured taxonomy, scalable content architecture, database-backed platform concepts, internationalization, SEO design and ongoing production operation.

The intended commercial direction focuses on selective high-value advertising and premium products around the broader “sense of wedding” concept rather than generic advertising volume.

The platform demonstrates the combination of technical architecture, audience structure, multilingual content delivery, search strategy and product positioning.

figure.rocks — Gaming, Technology & Collectibles Platform

figure.rocks is a gaming and technology platform with an evolving market position. The current direction combines collector-focused content, gaming experience, hardware and software guidance, network and performance topics and related technology.

  • Platform and taxonomy design
  • Gaming-oriented technical publishing
  • SEO and content architecture
  • Cross-platform ecosystem linking
  • Ongoing product-positioning work
  • Integration of technical engineering topics with consumer-facing content

No finished commercial model is assumed. The platform remains an actively evolving product concept and practical environment for testing gaming-oriented content, technology and ecosystem positioning.

bazify.com — Commerce / Platform Project

bazify.com forms part of the broader platform portfolio and explores e-commerce, product discovery and structured online retail.

Current development attention is lower than for stajic.de, loving.rocks and figure.rocks, but the project remains part of the broader platform and commerce experimentation portfolio.

Selected Technical & Product Projects

Aaasaasa AI Client

Desktop AI-client project focused on combining local and remote AI workflows in one controlled application environment.

  • Electron and TypeScript
  • Secure IPC boundaries and sandboxed preload design
  • Codex integration through a managed sidecar process
  • Local and remote model selection
  • Ollama and local-model workflows
  • Streaming responses, cancellation and lifecycle handling
  • Cross-platform binary resolution and packaging
  • RAG, search and document-ingestion concepts
  • Separation between application UI, provider logic and local runtime infrastructure

The project demonstrates practical AI integration beyond prompt experimentation: process management, desktop security boundaries, model abstraction, local control, application packaging and integration of multiple AI-provider paths.

Enterprise Aaasaasa 0.1

Enterprise platform and PoC project combining technical platform architecture with structured project and delivery management.

  • Multi-instance and SaaS platform concepts
  • APIs and CRUD operations
  • Data modelling
  • Internationalization
  • AI/API integration
  • Roles and rights
  • Project governance
  • Requirements and planning
  • Milestones and risks
  • Stakeholder structures
  • Validation and delivery documentation

The project provides practical evidence of the connection between software/platform implementation and formal project-management methods.

SenseFlow

Independent product concept currently developed through structured product discovery.

Current work focuses on defining scope, product assumptions, decision traceability, roadmap structure and technical feasibility rather than presenting an unvalidated finished product.

The project demonstrates product-discovery discipline and practical use of Jira and Confluence to move from concept toward structured implementation.

Enterprise Delivery & Project Capability

The current professional profile combines technical implementation with formally validated project and delivery capabilities.

The IPMA® Level D – Certified Project Management Associate certification validates project-management competence across structured planning and execution. The Professional Scrum Master I (PSM I) certification validates understanding of Scrum, empiricism, accountabilities, events, artifacts and commitments.

  • Requirements clarification
  • Scope structuring
  • Milestone planning
  • Risk and opportunity management
  • Stakeholder analysis and communication
  • Acceptance criteria
  • Backlog structure
  • Validation
  • Change management
  • Architecture decisions
  • Operational readiness
  • Documentation and traceability

Project management is treated as part of technical delivery rather than as an isolated administrative layer. The objective is to keep architecture, implementation, validation and operational readiness connected to delivery outcomes.

Certifications

IPMA® Level D – Certified Project Management Associate

PM-ZERT / GPM Deutsche Gesellschaft für Projektmanagement e. V.

  • Issued: 27 July 2026
  • Valid until: 26 July 2031
  • Certification according to IPMA ICR4 / ICB4 requirements

Professional Scrum Master I (PSM I)

Scrum.org

  • Certified: 18 August 2026
  • Professional Scrum Master I

Education

State-Certified IT Technician

SABEL GBS, Munich | 2002 – 2004

Technical education focused on information technology and systems.

State-Certified Electrical Engineering Technician

ETSC Jaroslav Černi, Sarajevo | 1989 – 1992

Technical education in electrical engineering.

High School Diploma / Abitur

Gymnasium, Sarajevo | 1984 – 1989

German recognition of the school-leaving qualification is available.

Technology & Engineering

Frontend & Web

  • JavaScript
  • TypeScript
  • Vue
  • Nuxt
  • HTML
  • CSS
  • Three.js
  • OpenSeadragon
  • UI/UX implementation
  • Responsive and component-oriented interfaces

Backend & APIs

  • Node.js
  • Nitro
  • PHP
  • Python
  • Django
  • REST and API integrations
  • Background processing and application services

Data, Search & Persistence

  • PostgreSQL
  • MySQL
  • MongoDB
  • SQLite
  • Prisma
  • Solr
  • SQL and NoSQL architectures
  • Metadata-driven systems
  • RAG and vector-search-oriented workflows

Infrastructure & Operations

  • Linux
  • Debian and Ubuntu
  • NGINX
  • Apache
  • PM2
  • Docker
  • Git
  • Server administration
  • Networking
  • Deployment
  • Reverse proxy configuration
  • Troubleshooting
  • Backup and recovery concepts

AI & Applied Automation

  • OpenAI and Codex integration
  • Local LLM workflows
  • Ollama
  • Model/provider integration
  • RAG-oriented application concepts
  • AI-assisted software-development workflows
  • AI-assisted publishing workflows
  • TensorFlow-based experimentation

Publishing, SEO & Information Architecture

  • Technical SEO
  • Multilingual platform architecture
  • Canonical URL structures
  • hreflang and locale strategy
  • Sitemap architecture
  • Structured data
  • Semantic content architecture
  • EditorJS and structured publishing
  • Search Console and webmaster-tool workflows

Project, Product & Collaboration Tools

Jira

Used as a delivery and work-structure layer rather than only as an issue tracker.

  • Product and project backlogs
  • Epics, issues and tasks
  • Workflow status
  • Delivery tracking
  • Acceptance criteria
  • Structured execution and traceability

Confluence

Used as the project knowledge, architecture and decision layer.

  • Requirements
  • Product and project documentation
  • Architecture documentation
  • Decision records
  • Scope and roadmap material
  • Traceability
  • Project knowledge
  • Structured working documentation

Git & Development Workflow

Git-based version control supports implementation and deployment workflows across public and private repositories, including Nuxt, Prisma, platform and AI-client work.

Languages

  • Serbian: Native
  • German: Very good professional spoken and written use
  • English: Business and technical working proficiency

Professional Links

Articles