AT.
Open to work

Backend & Search Engineer · Gurugram, IN

I teach machines what people mean — not just what they type. Five years of search platforms and ranking models that stay calm at 25K requests a minute.

Abhinav Tyagi
Local time — --:--28.4595° N, 77.0266° E

Based: Gurugram, IndiaTrade: Search platforms · distributed systemsStack: Java · Spring · Elasticsearch · KafkaBelief: Relevance is empathy at scale

25K+
Search requests / min
~10M
Products indexed, near-realtime
45%
Search latency, Redis-backed
5+
Years shipping to production

02 — Experience

Click a role for the full story

03 — Skills

The stack behind the work

The tools I reach for daily — shaped by five years of search, ranking, and backend systems work.

Search & data

Elasticsearch
Relevance, DSL, 6.x → 8.x migrations
Kafka
Ingestion pipelines
Redis
Hot-path caching
MongoDB
Aggregation pipelines

Language & retrieval

NLP
Parsing what people meant
Vector search
Dense retrieval, ANN indexes
Embeddings
Two-tower & semantic tagging
NER
Sizes, units and brands from raw queries

Backend

Java
Primary language
Spring Boot
High-throughput microservices
Python
Tooling & ML pipelines
XGBoost · LTR
Learning-to-rank rescoring

Infra & tooling

Kubernetes
Orchestration & rollouts
Docker
Containers & CI environments
AWS · GCP · Azure
Multi-cloud deploys
OpenTelemetry
Tracing & instrumentation

04 — Lab

Where I build things that don’t have a brief yet

In progress

NaturalQuery

A natural-language-to-Elasticsearch query agent built on a custom MCP server (Java 17, Spring Boot 3.x, official MCP Java SDK).

Active

LTR Rescoring

Experiments with XGBRanker rescore pipelines for search relevance tuning.

Research

Query Understanding

NER + semantic tagging to parse intent from raw search queries.

Some become production features. Some stay internal tools. Some just teach me something.

05 — Writing

From the archive

Published research + engineering notesAll writing on Medium ↗

06 — Elsewhere

@abhiinav.exe
Sitting in the Parvati river among boulders, pine forest behindMirror selfie in a charcoal suitStanding outside Hawa Mahal in JaipurOn a Royal Enfield Classic on a dirt track at golden hourSitting by a wooden sculpture in a garden at nightWith a Royal Enfield Himalayan on a mountain ride stopFacing down a very large dosaIn a yellow hoodie above the clouds in the hills