1 · AI2 · Web / Full-stack3 · Architecture & systems4 · Science & researchLLMMLBackendDatabasesFrontendInfrastructure & DevOpsProduct designAI / LLM systems: LLM features built around queues, data contracts, workflows and operation.AI / LLMsystemsAgent workflows: Multi-step processes, scenario graphs and tools with explicit data flow.Agent workflowsPrompt engineering: System instructions, reusable prompts and versioned configurations.PromptengineeringStructured output: Response schemas, parsing and typed contracts between models and applications.StructuredoutputLocal LLMs: Private inference with open-weight models, llama.cpp and a dedicated gateway.Local LLMsApplied ML: Applied neural networks, clustering and recommendation logic.Applied MLNeural networks: From early neural network projects to modern LLM applications.Neural networksPyTorch: Training and comparing PyTorch models: a typing-rhythm VAE and flow models for motion trajectories.PyTorchGenerative models: Generating new temporal sequences with VAE and normalizing flows; comparing distributions rather than training loss alone.GenerativemodelsClustering: Grouping episodes by motion characteristics and context to inspect the composition of a research corpus.ClusteringML data preparation: Cleaning public logs, retaining provenance and distribution tails, and splitting data by participant and session.ML datapreparationModel evaluation: Comparing ML model quality through controlled experiments, reproducibility and careful interpretation of results.ModelevaluationRecommendation systems: E-commerce recommendation logic and product research.RecommendationsystemsBackend engineering: APIs, background jobs, integrations and service data.BackendengineeringPython: AI services, FastAPI, research prototypes and infrastructure tools.PythonFastAPI: Typed Python APIs for product and research applications.FastAPIPHP / Laravel: Full-stack and backend development across marketplaces, CRM and platforms.PHP / LaravelQueues & workers: Background execution, retries, load distribution and task hierarchies.Queues &workersKafka: Messaging integration for a medical microservices platform.KafkaPostgreSQL: Relational data models for backend services.PostgreSQLMySQL: Schemas, queries, CRM, marketplaces and data migration.MySQLSQLite: Embedded relational storage for local applications.SQLiteMongoDB: Document storage and application data modeling.MongoDBJS / TS: From jQuery and AngularJS to typed Vue and Nuxt applications.JS / TSVue / Nuxt: Product interfaces, dashboards and server-rendered applications.Vue / NuxtSSR / SEO: Server rendering, search-friendly structure and long-lived product content.SSR / SEOInteractive maps: Visual interfaces for zones, routes and geographic constraints.InteractivemapsLinux / SSH: Server maintenance, health checks and installation workflows.Linux / SSHNginx / load balancing: Gateway routing and distribution of inference requests.Nginx / loadbalancingOrchestration: Repeatable installation, deployment and maintenance workflows across servers.OrchestrationDocker: Isolated recording bots, agents and repeatable service deployment.DockerCI/CD & Git automation: GitHub/GitLab hooks and controlled application updates.CI/CD & GitautomationObservability: Dashboards, telemetry, health checks and task monitoring.ObservabilitySecurity operations: Collection of system events and operational logs for investigation.SecurityoperationsProduct UI / UX: Complex forms, graph editors, dashboards and focused user journeys.Product UI / UXProduct development: Discovery, UX, implementation, feedback and long-term product evolution.ProductdevelopmentProduct architecture: Connecting domain models, user journeys and runtime constraints.ProductarchitectureDomain modeling: Entities, rules and states for complex product domains.Domain modelingGraph structures: Graph models for conversations, AI scenarios and task execution.GraphstructuresMicroservices: Legacy decomposition, service communication and explicit data contracts.MicroservicesEvent-driven architecture: Event-based integrations, message brokers and background processing.Event-drivenarchitectureGeospatial services: Backend services for geographic classification, spatial rules and geodata: from flight approvals to emergency call maps and ambulance movement.GeospatialservicesApplied research: Learning new domains and translating knowledge into working models.AppliedresearchProtein structures: Research prototypes using structural protein data.ProteinstructuresAromatic molecules: Research data, chemical profiles and sources for an aroma product.AromaticmoleculesGeographic regulations: Translating regional rules and approval processes into product workflows.Geographicregulations