
Aljosa Mohorovic
Verified Expert in Engineering
Full-stack Developer
Zagreb, Croatia
Toptal member since June 2, 2020
Aljoša is a senior developer who has led teams, served as a product owner, and built end-to-end solutions on his own. Focused on AI security and LLM integrations, he works at the intersection of cybersecurity and the generative AI transformation, building integrations with leading AI providers and AI-based products. With deep full-stack experience across the modern AI stack, his core is Python and TypeScript, but he's flexible enough to adopt any language or platform a project demands.
Portfolio
Experience
- Python - 15 years
- AI Engineering - 1 year
- Enterprise AI - 1 year
- Agentic AI Systems - 1 year
- Claude Code - 1 year
- AI Agents - 1 year
- Agentic Frameworks - 1 year
- AIOps - 1 year
Preferred Environment
Git, Shell, Vim Text Editor, Python, TypeScript, Pi, Claude Code, Codex
The most amazing...
...AI-first knowledge platform on the EU Clinical Trials dataset — agentic RAG, embeddings, hybrid retrieval, and streaming LLM answers with citations.
Work Experience
Node.js and TypeScript Developer
SandboxAQ
- Built a real-time event-driven pipeline for discovering cryptographic assets across 15+ AWS services (EC2, ECS, EKS, RDS, S3, KMS, etc.). Designed a PostgreSQL service cache with per-tenant isolation and managed Kafka and IAM provisioning.
- Led a full Python-to-Kotlin rewrite of the Palo Alto Networks integration: TLS session inspection, certificate extraction, and firewall log forwarding. Built GraphQL APIs, DB models, React UI, and resumable uploads for large datasets.
- Built the Qualys integration end-to-end, from API client to production Temporal workflows. Mapped TLS scan data to platform protobufs with cipher suite analysis and downgrade detection, and designed robust ingestion error handling with retries.
- Built a full-stack Azure integration for cryptographic asset discovery, with Workload Identity Federation (AWS-to-Azure) for credential-less auth. Orchestrated Temporal workflows and delivered the React UI, GraphQL API, and Terraform onboarding.
- Built a GitLab CI/CD Component integrating cryptographic static analysis into pipelines. Runs on merge requests to scan code for weak, outdated, and quantum-unsafe cryptography, generating a Cryptographic Bill of Materials (CBOM).
- Worked on an enterprise AI security platform giving organizations visibility and control over generative AI use — covering data loss prevention, prompt injection defense, and AI governance across leading LLM providers at scale.
Senior Full-stack Developer
PINKDROIDS
- Developed various highly interactive web experiences for an educational platform.
- Built a CI/CD pipeline which integrated multiple systems and various production environments to enable multiple daily deployments to production.
- Coordinated the efforts of a diverse international team (US and Europe).
App Developer
Project 468, Inc
- Built a modern Slack platform bot, providing a simplified UX.
- Integrated the AI-based assistant into the Slack application.
- Worked successfully with a geographically distributed team.
Senior Full-stack Developer
Freelance
- Worked on a multitenant solution for the hospitality industry.
- Developed an interactive feedback tool for a government agency.
- Developed an eCommerce solution for a US-based telecommunications company.
CTO
Studio Revolucija
- Led and managed a digital platform for the largest beer company in the region.
- Developed a multitenant gaming system focused on the Flash platform.
- Worked on the PoC/next-generation media system for a Nordic car company.
Full-stack Developer
FluidMedia
- Developed modern tourism-focused websites with booking as a core feature.
- Deployed systems with deeply integrated translation tools focused on the internationalization of content.
- Oversaw continuous deployment and monitoring of multitenant solutions.
Web Developer
Freelance
- Developed various services for one of the largest web portals in the region.
- Enhanced parts of content management systems with JavaScript to improve the UX.
- Worked on cross-platform desktop solutions for the hospitality industry.
Experience
AI & Integrations at SandboxAQ
https://www.sandboxaq.com/Advanced Slack Application With AI-Based Assistant and A Great UX
https://www.runwhen.com/Pricing and Orchestration Solutions
The tech stack was based on Python and Django for API and async tasks with TypeScript/React for the front-end UI.
OctoWars
A limited edition NFT collection which will provide one-of-a-kind alternate artwork cards, as well as other PvE and social benefits in the upcoming trading card game, OctoWars.
Life Science Network
https://www.lifescience.net/As a full-stack developer, I implemented the initial version and worked on various updates over the years.
IZZI Educational Platform
Skills
Libraries/APIs
React, Django ORM, API Development, Node.js, REST APIs, Claude API, Vue, Stripe, Pandas, SQLAlchemy, Protobuf, PyTorch, Pydantic, PyData
Tools
Git, GitHub, Celery, Figma, Slack, Claude Code, Shell, Auth0, Microsoft Excel, Vim Text Editor, Apache, ChatGPT, AI SDK, Claude, Claude Agent SDK, Helm, Bazel, Codex
Languages
Python, JavaScript, CSS, HTML, Python 3, TypeScript, HTML5, PHP, SQL, GraphQL, Bash, Kotlin, Go
Frameworks
Django, Django REST Framework, Redux, Next.js, Tailwind CSS, Agentic Frameworks, React Native, Jest, Material UI, Flask, Flutter, Ktor, Alembic
Paradigms
REST, Web Architecture, API Architecture, ETL, Rapid Prototyping, Asynchronous Programming, Microservices, Test-driven Development (TDD), Requirements Analysis, Desktop App Development, Functional Programming, DevSecOps
Platforms
Heroku, Docker, Amazon Web Services (AWS), Shopify, Linux, Amazon EC2, Google Cloud Platform (GCP), Azure, Contentful, Blockchain, Kubernetes, Apache Kafka
Storage
PostgreSQL, Elasticsearch, MySQL
Industry Expertise
Cybersecurity, Project Management
Other
Front-end, Front-end Development, APIs, Full-stack, Web Development, Startups, Minimum Viable Product (MVP), Early-stage Startups, Code Architecture, CI/CD Pipelines, Architecture, Code Review, Back-end, Integration, Full-stack Development, Technical Leadership, IT Security, Web Scraping, Single Sign-on (SSO), CTO, Technical Architecture, API Gateways, Amazon RDS, API Integration, Data Scraping, Discovery Workshops, Project Timelines, Project Planning, AI Agents, Agentic AI, Agentic AI Systems, Agentic RAG Systems, AI Engineering, Enterprise AI, AIOps, AI Integration, AI Architecture, AI Native, Dashboards, Artificial Intelligence (AI), Containerization, Data Modeling, Temporal, Infrastructure, Data Analysis, FastAPI, Web Usability, Generative Pre-trained Transformers (GPT), Prompt Engineering, Slackbot, Data Science, PWA, Frameworks, Progressive Web Applications (PWAs), OpenAI GPT-4 API, Proof of Concept (POC), OpenAI, Anthropic, AI Enablement, Pi
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