Solutions Engineer · Production LLM Applications

I ship production LLM applications for enterprise customers.

Recently won a $1.3M proposal at a global insurance carrier on a visual + text extraction pipeline. Open to Solutions Architect, Forward Deployed Engineer, and Solutions Engineer roles at LLM-first companies. Based in India, open to relocation anywhere in the world.

Rahul Nanwani

A quick intro

I turn enterprise AI proofs-of-concept into production systems.

Four-plus years as a Solutions Engineer for Fortune-100 insurance and Tier-1 banking customers. I own the technical motion end to end, from the first pre-sales POC through deployment, and I build for reuse, so the systems I ship keep working long after handoff.

Rahul Nanwani

The numbers

$1.3M TCV / $433K ARR
proposal won at a global insurance carrier, after a competitive technical evaluation
~98%
field-level accuracy on blind samples, Settlement Instructions extraction at a Tier-1 international bank
96.2%
field automation across 70 fields, postal claims-intake at a Tier-1 UK insurer
96.03%
automation rate (88.54% field-level) across 294 samples, UK bank statements at a top-5 UK bank
~43 FTEs
saved across five lines of business at a Tier-1 commercial bank (31 on the primary pipeline)
6+
enterprise deployments running on a reusable email-processing library I wrote
~30k pages/yr
handled by an LLM claims workflow extracting 80 fields
4+ yrs, 3 promotions
serving Fortune-100 insurance and banking customers

What I shipped

Visual + text extraction for handwritten claims

global insurance carrier

Led a competitive technical evaluation to automate extraction from Japanese handwritten medical certificates. The pipeline handles era-based date conversion (Japanese imperial calendar to Gregorian), hanko stamp recognition, signatures, and circled checkbox selections that the text-only baseline could not address. Won the evaluation; the customer is moving toward production rollout.

$1.3M TCV / $433K ARR proposal won

LLM document workflow for claims processing

Fortune-100 U.S. life insurer

Own the post-sales technical delivery of an 80-field LLM extraction workflow handling around 30,000 pages per year. It consolidates 40-50 page claims documents into structured outputs and analyst-ready summaries; I co-design the schemas with the customer business team and ship Python accuracy-validation utilities that compare outputs against ground truth.

80 fields, ~30k pages/year, in production

Account ownership through a team transition

Tier-1 commercial bank

Took over as the customer-side technical advisor across five-plus production LLM solutions after a team transition. The primary document-processing pipeline now saves 31 FTEs (around 52,000 hours per year), with classification accuracy lifted from 45% to 80% and extraction +75%. Accuracy lifts also shipped across four more lines of business, including trade finance, cheque processing, and debt collection.

31 FTEs (~52,000 hrs/yr) saved

Postal claims-intake in production

Tier-1 UK insurer

Shipped a postal claims-intake solution to UAT completion at 96.2% field automation accuracy across 70 fields and four LLM-based models. Designed the solution architecture, trained a new engineer mid-project, and recovered an aggressive timeline after a parallel production incident.

96.2% accuracy across 70 fields

Open source

blackjack21

Python package · PyPI · actively maintained

A complete library for blackjack rounds: multi-player tables, configurable multi-deck shoes, the full action set (hit, stand, double-down, split, surrender), and configurable dealer rules. Versioned releases on PyPI with a test suite, CI, and documentation on Read the Docs. Latest release: v5.0.0 (March 2026).

How I work

I define how success is measured before I build the thing that has to meet it. That is why the systems I ship keep working after I hand them off.

Languages
PythonSQL
LLM engineering
Production LLM SolutionsPrompt EngineeringLLM Workflow DesignDocument Extraction (text + visual)Accuracy Validation
Customer motion
Solution ArchitecturePre-sales POCsTechnical DiscoveryCustomer EnablementAccount Executive Partnership
AI-assisted development
Claude (primary)CursorChatGPT in daily flow

Reusable tooling

Email-processing libraryAdopted across 6+ enterprise deployments, saving weeks of setup per project.
Prompt Engineering PlaybookAdopted across the Solutions Engineering org.
Evaluation harnessesScore summary-field and extraction accuracy.
Vertical-text extraction utilityAdded to the team's shared developer-tooling package.
CICD migration toolMove production LLM applications across environments safely.
Bounding-box text extractorBuilt in a single day for a live use case.

The journey

Instabase
Aug 2021 – present · 4 roles

Apr 2024 – present

Solutions Engineer II

Production LLM applications for Fortune-100 insurance and banking, from pre-sales POC through deployment.

Oct 2022 – Mar 2024

Solutions Engineer I

Shipped claims-indexing and extraction solutions to production across insurance and banking.

Jul 2022 – Oct 2022

Data Operations Lead

Led a team of associates and cut project ramp time by 3+ weeks with new data-preparation strategies.

Aug 2021 – Jun 2022

Data Operations Associate

Contributed to 10+ client use cases and 5+ pre-sales POCs across banking, insurance, and mortgage.

Education

2024 – 2025

M.Sc. Machine Learning & AI

Liverpool John Moores University, UK

Thesis: Explainable AI for Image Classification.

2023 – 2024

Executive PGP, Machine Learning & AI

IIIT Bangalore, India

2017 – 2021

B.Tech, Computer Science & Engineering

MIT ADT University, India

What's next

  • Solutions Engineer II at Instabase since April 2024 (tenure since August 2021), working with Fortune-100 insurance and Tier-1 banking customers on production LLM document workflows and visual + text extraction.
  • Open to Solutions Architect, Forward Deployed Engineer, or Solutions Engineer roles at LLM-first companies.
  • Based in India, open to relocation anywhere in the world.