Applied systems and serious learning
Deep technical courses and focused AI products for engineers who want to understand what they build, not just call an API.
Product portfolio
Focused products that make autonomous systems more useful, controlled, and accountable.
Fignix product 01
Real-time fraud decisions, autonomous investigation, human approval, and compliance-ready evidence in one operational system.
Meet Sentinel →Fignix product 02
Run coding agents in isolated workspaces, enforce task budgets, control data access, and keep a complete record of what every agent did.
Explore FignixOS →Course library
Each course combines conceptual depth, visual explanation, code, labs, and the operational details that shorter tutorials leave out.
Distributed data
Build reliable stream processing systems from partitions and event time to checkpoints, state, and production operations.
AI infrastructure
Understand high performance serving through KV cache economics, batching, kernels, scaling, and production tradeoffs.
Search engineering
Master search systems from schema and relevance to SolrCloud, vector retrieval, hybrid search, LTR, and operations.
Lakehouse engineering
Learn table format internals through metadata, snapshots, evolution, catalogs, row level changes, and maintenance.
Vector databases
Engineer accurate vector retrieval through filtering, hybrid search, HNSW tuning, multitenancy, distributed operation, and recovery.
AI quality engineering
Evaluate LLM, RAG, conversational, tool-using, agentic, MCP, safety, release, and production behavior with defensible evidence.
Agent reliability engineering
Master Temporal and LangGraph independently, then combine their histories, checkpoints, retries, human review, and idempotent effects.
Knowledge and retrieval engineering
Build governed retrieval systems from parsing and hybrid search to grounding, citations, evaluation, security, and production operations.
Language model foundations
Implement a small GPT-style language model from tokenization and causal attention to training, checkpoints, and text generation.
India-first multimodal AI
Build multilingual text, speech, voice-agent, and document systems with explicit evaluation, safety, privacy, and production contracts.
Autonomous systems engineering
Build bounded agents from the Python control loop through tools, memory, planning, protocols, security, durability, evaluation, and production.
PostgreSQL vector search
Engineer exact and approximate similarity search with HNSW, IVFFlat, filtering, hybrid retrieval, recall measurement, and PostgreSQL operations.
Start with the system you need
Choose a course and start learning now. Every topic is designed to connect theory, implementation, and operations.
Explore the library ↗