Systems Architecture & Production AI

I'm Yogesh. I build software systems and teams that last.

I work with companies building backend platforms, cloud infrastructure, and production AI. Most of my work centers on taking products past the prototype stage: making sure the architecture holds up under real traffic, and helping the engineering team establish the code quality and deployment habits they need to keep shipping.

99.95%
Availability SLA
-52%
Cloud Cost Reduction
75%
Faster CI/CD Velocity
architecture-overview
p95 Latency38ms
Throughput1420 t/s
Security GateACTIVE
Edge Gateway & Auth
Token bucket rate-limiting • RBAC token check
1.2ms
FastAPI Asynchronous Runtime
Pydantic v2 validation • Non-blocking event loop
8.4ms
PostgreSQL & pgvector HNSW
Cosine similarity & structured metadata filter
14.8ms
LLM Verification & Guardrails
Hallucination evaluator • Streaming SSE chunks
18.2ms
SYSTEM ACTIVE
PROD • AWS us-east-1
Python / FastAPIHigh-Throughput Runtime
PostgreSQL & pgvectorHybrid Relational Vector
Apache KafkaDistributed Event Streaming
Docker & KubernetesContainer Orchestration
AWS EKS & TerraformImmutable Infrastructure
Java & Spring BootEnterprise Services
Go / gRPCLow-Latency Microservices
Redis ClusterIn-Memory Caching & State
Celery & Distributed QueuesAsynchronous Workflows
NIST AI RMF & GuardrailsSecurity & Governance
Python / FastAPIHigh-Throughput Runtime
PostgreSQL & pgvectorHybrid Relational Vector
Apache KafkaDistributed Event Streaming
Docker & KubernetesContainer Orchestration
AWS EKS & TerraformImmutable Infrastructure
Java & Spring BootEnterprise Services
Go / gRPCLow-Latency Microservices
Redis ClusterIn-Memory Caching & State
Celery & Distributed QueuesAsynchronous Workflows
NIST AI RMF & GuardrailsSecurity & Governance
Python / FastAPIHigh-Throughput Runtime
PostgreSQL & pgvectorHybrid Relational Vector
Apache KafkaDistributed Event Streaming
Docker & KubernetesContainer Orchestration
AWS EKS & TerraformImmutable Infrastructure
Java & Spring BootEnterprise Services
Go / gRPCLow-Latency Microservices
Redis ClusterIn-Memory Caching & State
Celery & Distributed QueuesAsynchronous Workflows
NIST AI RMF & GuardrailsSecurity & Governance

Core Stack & Architecture

Technologies and architecture patterns built for production.

A look at the tools and systems I use to build distributed backends, retrieval pipelines, and cloud environments that hold up under real traffic.

Retrieval Engine

Production AI & Vector Retrieval Systems

Retrieval pipelines using contextual chunking, pgvector HNSW indexing, and guardrails that catch hallucinations before responses leave the server.

INTERACTIVE PIPELINE STAGES
Latency: 34msScore: 0.894
Stage Payload: PostgreSQL pgvector HNSW Approximate Nearest NeighborsSTREAMINGSELECT doc_id, chunk_text, (1 - (embedding <=> $query)) AS cosine_similarity FROM kb_chunks WHERE tenant_id = 'c74-prod' ORDER BY embedding <=> $query LIMIT 5;
Top 5 chunks retrieved. Vector distance: 0.106. Zero ETL sync delay.
FastAPIpgvectorPyTorchvLLM / OllamaLangChain / LlamaIndexHuggingFace
SCALE: > 5M VECTORS / TENANTVerified Architecture Specs

Cloud & DevOps Infrastructure

EKS Pods: 48/48 Healthy44% CPU
Node Pool: m6i.xlargeAuto-scaling: Active
AWSAzureGCPKubernetesDockerTerraformAnsibleGitLab CI
MULTI-REGION ACTIVE-ACTIVE99.95% SLA

Data Architecture & Streaming

Ingress Throughput:18,420 msgs/s
Partition Lag: 0 msgs3-Way In-Sync
PostgreSQLApache KafkaRedisApache SparkCeleryMongoDB
ZERO EVENT LOSS UNDER SPIKE< 40ms DISPATCH

Full-Stack & Microservice Runtimes

FastAPI Async Uvicorn:14,200 req/s
Pydantic v2 core compiled in Rust • Non-blocking asyncio event loop
PythonFastAPIGoSpring BootTypeScriptReactGraphQL
STRICT TYPING & STATIC ANALYSISPRODUCTION VERIFIED

Enterprise Security & AI Governance

Jailbreak / Injection Filter:100% BLOCKED
NIST AI RMF adversarial probe verification • Zero leakage of system prompt
NIST AI RMFSIEMIAM / RBACSAST / DASTGDPRHIPAAKMS
ZERO TRUST ARCHITECTUREAUDIT READY

Architecture Tradeoffs

Choosing architecture for your company's stage, not an ideal world.

There is no universally best stack. Every technical choice balances shipping speed, cloud costs, and the operational burden your current team can realistically sustain.

Architecture Tradeoff Analysis
Production Tested
01

Operational & Deployment Boundary

Monolith vs Distributed Services

RECOMMENDED STAGE:Seed to Series A Default

Observed Bottleneck

Early-stage organizations often prematurely fracture domains into microservices, creating high network latency, distributed transaction failures, and complex debugging cycles.

Production Strategy

Preserve a modular monolith with strict domain boundaries until independent deployment cadence or isolated resource contention empirically justifies microservice separation.

-65%
Deployment Overhead
3.2x faster
Mean Time to Debug
CHANNEL ENGAGED
02

Unified Retrieval & State Persistence

pgvector vs Dedicated Vector Stores

CLICK TO SWITCH
03

Cost Predictability & Privacy Isolation

Self-Hosted vs Hosted LLM Gateways

CLICK TO SWITCH
04

SLA Protection Under Burst Ingestion

Synchronous REST vs Event Queues

CLICK TO SWITCH

Case Studies

Production systems and the engineering behind them.

A look at real problems I have solved: cutting cloud spend, stabilizing high-traffic backends, and taking early prototypes into production without downtime.

Deployment Velocity
Automated CI/CD pipelines
75% Faster
Cloud Compute Savings
Auto-scaling & resource bin-packing
-52% OpEx
Mission-Critical Availability
Multi-region active-active topology
99.95% SLA
Articles

What I've learned building software, backends, and teams.

I write about things I've built, broken, and fixed in production. No framework hype or recycled advice: just honest notes on the engineering decisions you only understand after running real traffic.

MCP140 min read

Detailed Guide to Building MCP Server in Production: Complete Technical Deep Dive

A comprehensive technical guide to designing, building, testing, deploying, and operating MCP (Model Context Protocol) servers in production environments. Covers architecture design, security hardening, performance optimization, observability, disaster recovery, and real-world patterns for integrating AI capabilities with existing business systems. Includes complete code examples, deployment strategies, and lessons from production deployments.

Dec 2025READ
SRE150 min read

Achieving 99.95% Uptime: Building Self-Healing Infrastructure for 200+ Microservices

A complete technical guide to architecting, deploying, and operating 200+ microservices with 99.95% uptime (4.4 hours downtime per year). Covers reliability engineering principles, multi-region architecture, observability at scale, self-healing automation, chaos engineering, and incident response. Includes detailed code examples, diagrams, and a proven roadmap from 98.2% to 99.95% uptime.

Dec 2025READ
Cloud Cost Optimization145 min read

Cloud Cost Optimization at Scale: A $2.8M Reverse-Engineering Case Study

A detailed case study on how a high-growth SaaS company reverse-engineered their $5.4M annual cloud spend, identified inefficiencies across compute, storage, and networking, and achieved a 52% cost reduction ($2.8M in annual savings) through systematic optimization, intelligent right-sizing, and architectural redesign. Includes step-by-step technical implementation, code snippets, and a replicable FinOps framework.

Dec 2025READ
Developer Tools

Fast, client-side tools that never send your data anywhere.

Utilities I built and use for everyday engineering tasks: formatting JSON, converting timestamps, and inspecting payloads. Everything runs locally in your browser with zero network calls.

Data Engine

JSON Formatter & Diff

RFC 8259

Client-side recursive parsing, structural formatting, minification, and schema validation with zero server transmission.

{
  "service": "auth-gateway",
  "status": "active",
  "p95_ms": 1.8,
  "replicas": 4
}
Valid JSONParser: V8 Native
OFFLINE READYLaunch Full Tool
Scheduler

CRON Syntax Ticker

5-Part Spec

Visual schedule expression builder with deterministic next-execution timetable calculations and timezone translation.

*/5 * * * *
Every 5 minutes
Upcoming Executions:
12:00:00 UTC12:05:00 UTC12:10:00 UTC
UTC SYNCHRONIZEDLaunch Full Tool
Accessibility

WCAG Contrast Engine

APCA / WCAG 2.1

Algorithmic color contrast verification for dark and light operational interfaces to guarantee readability standards.

Sample Production UI Text
Ratio: 19.8:1
Maximum Enterprise LegibilityAAA PASS
ACCESSIBILITY VERIFIEDLaunch Full Tool
Leadership & Philosophy

Clear technical judgment paired with hands-on engineering.

I work directly with engineering teams and founders to make sound technology choices early. That means building backends that are simple to operate, keeping cloud bills predictable, and helping developers establish the habits they need to keep shipping.

Yogesh Bhandari
ENGINEERING LEADER

Yogesh Bhandari

Systems Architect & Engineering Leader

Core FocusProduction AI & Cloud
StatusSelect Advisory
Core Leadership Principles01 / 03

"Prioritize architectural simplicity, maintainability, and proven operational resilience over fleeting framework fashion."

Evidence: Deterministic PostgreSQL + pgvector foundation before adopting premature multi-cluster databases.
Core Engineering Capabilities
Status:Production Tested
AI Architecture

Production AI & Retrieval Systems

Designing deterministic retrieval-augmented generation (RAG) engines, pgvector HNSW indexing, and automated LLM guardrails that eliminate hallucination risk.

> 5M Vectors / Tenant • Zero ETL Sync
Cloud Infrastructure

Cloud Infrastructure & High Availability

Deploying multi-region active-active VPC topographies on AWS and Azure with declarative Terraform state, auto-scaling EKS node pools, and zero-downtime releases.

99.95% Availability SLA • -52% Compute OpEx
Security & Governance

Enterprise Governance & AI Security

Enforcing cryptographic audit chains, granular database Row-Level Security (RLS), and prompt-injection defense matrices aligned with the NIST AI RMF framework.

NIST AI RMF Aligned • Tamper-Evident SHA-256
Engineering Delivery

Engineering Delivery & Team Scale

Instilling engineering excellence through automated CI/CD guardrails, static typing rigor, pragmatic code review cycles, and technical debt retirement pipelines.

75% Faster CI/CD • 0% Deployment Drift
Selected Focus: Production AI & Retrieval SystemsProduction Ready

Designing deterministic retrieval-augmented generation (RAG) engines, pgvector HNSW indexing, and automated LLM guardrails that eliminate hallucination risk.

FastAPIpgvectorPyTorchvLLMHuggingFace
Full Case History
Newsletter

Notes on systems, architecture, and engineering.

Whenever I publish a new article or technical teardown, I send a concise summary with the key decisions and diagrams. Sent occasionally, zero marketing spam.

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