Hi, I'm Vasanthkumar
Product Engineer & Full-Stack Developer. Passionate about building scalable systems, AI integration, and distributed infrastructure.
VK

About

10+ years of software engineering experience across fintech, low-code SaaS, blockchain protocol infrastructure, and AI-powered proptech. Progressed from individual contributor to team lead managing cross-functional teams of 8+ engineers. Deep expertise in backend systems (Python, Rust), full-stack development (React, Next.js, TypeScript), enterprise platform architecture, and AI/LLM integration. Known for spearheading 0-to-1 initiatives, leading architectural rewrites, and establishing strong engineering culture.

Work Experience

Skills

Rust
Python
TypeScript
React
Next.js
Node.js
PostgreSQL
MongoDB
Redis
Docker
Kubernetes
AWS
Prometheus
Grafana
LLM / Claude API
SAML / OAuth / OIDC
FastAPI
Flask
gRPC
RAG / Vector DBs
Git
GitHub Actions / CI-CD
Prompt Engineering
Cairo
Express.js
Kafka
Celery
Linux
Microservices
Distributed Systems
System Design
REST APIs
Java
Spring Boot
Tokio
GraphQL
AngularJS
OpenTelemetry
Terraform
Helm
My Projects

Check out my latest work

I've worked on a variety of projects, from simple websites to complex web applications. Here are a few of my favorites.

cognis

Rust implementation of the LangChain ecosystem — rustchain-core, rustchain, langgraph, and deepagents in native Rust. Designed for building agentic LLM applications with type-safe, zero-cost abstractions and first-class async.

Rust
LLM
Agents
LangChain
AI

lighter-rs

Production-ready Rust SDK for the Lighter Protocol order book DEX. Implements Poseidon2 hashing and Schnorr signatures, supports market/limit/stop-loss/take-profit orders, with 41 unit tests and mainnet-verified transactions.

Rust
DeFi
Cryptography
Trading
SDK

paradex-rs

Unofficial Rust SDK for Paradex, a decentralized perpetuals exchange. Provides a typed API surface for trading, market data, and account management, suitable for high-throughput Rust trading bots and integrations.

Rust
DeFi
Trading
SDK
Crypto

claude-rs

Rust SDK for the Anthropic Claude API. Strongly-typed wrappers for messages, streaming, tool use, and prompt caching — designed for production Rust services that integrate Claude as a primitive rather than as an experiment.

Rust
LLM
Claude API
SDK
AI

gonfig

Unified configuration management library for Rust that seamlessly integrates environment variables, configuration files, and CLI arguments behind one ergonomic API. So an application's config layer doesn't need three different conventions to work consistently across environments.

Rust
Library
Configuration
DX

Madara Framework

Open-source blockchain infrastructure framework for the Starknet ecosystem. Built complete metrics system for live validator nodes with real-time monitoring and health state capture. Implemented robust chain reorganization handling for production validator scenarios.

Rust
Blockchain
Starknet
Distributed Systems
Metrics

Semantic Layer (Low-Code Platform)

AI-powered semantic intelligence layer for an enterprise low-code platform. Led team from solo prototype to 8+ member production team. Integrated Claude API for semantic understanding and intelligent workflow automation. Delivered multiple validated use cases for AI-enhanced workflow processes.

Python
Claude API
Microservices
Kubernetes
React

covreport

Code coverage reporting tool that takes the raw coverage output from a project and turns it into shareable, comparable reports. Designed for teams that want coverage trends visible in PRs without standing up a full coverage service.

TypeScript
CI/CD
Developer Tools
Coverage

Enterprise Authentication System

Complete redesign of authentication infrastructure for an enterprise SaaS platform. Implemented SAML identity provider support, Active Directory synchronization, and cross-platform identity sync. Enabled the platform to serve enterprise customers with SSO and identity management.

Python
SAML
Active Directory
PostgreSQL
Kubernetes
Open Source

I like building things

Contributing to open source projects and solving meaningful problems in the community. Here are some of my contributions and bounties.

cognis

cognis

Open Source - Rust / AI

Rust implementation of the LangChain ecosystem — rustchain-core, rustchain, langgraph, and deepagents in native Rust. Designed for building agentic LLM applications with type-safe, zero-cost abstractions and first-class async.

lighter-rs

lighter-rs

Open Source - Rust / DeFi

Production-ready Rust SDK for the Lighter Protocol order book DEX. Implements Poseidon2 hashing and Schnorr signatures, supports market/limit/stop-loss/take-profit orders, with 41 unit tests and mainnet-verified transactions.

paradex-rs

paradex-rs

Open Source - Rust / DeFi

Unofficial Rust SDK for Paradex, a decentralized perpetuals exchange. Provides a typed API surface for trading, market data, and account management, suitable for high-throughput Rust trading bots and integrations.

claude-rs

claude-rs

Open Source - Rust / AI

Rust SDK for the Anthropic Claude API. Strongly-typed wrappers for messages, streaming, tool use, and prompt caching — designed for production Rust services that integrate Claude as a primitive rather than as an experiment.

Madara CI/CD & Developer Experience

Madara CI/CD & Developer Experience

Open Source - Starknet

Improved developer workflow and infrastructure. Migrated to Blacksmith CI (#754), fixed Docker container handling in build artifacts (#797), updated localstack GitHub Actions network config (#756), and added comprehensive Grafana monitoring and alerting (#781).

gonfig

gonfig

Open Source - Rust

Unified configuration management library for Rust that seamlessly integrates environment variables, configuration files, and CLI arguments behind one ergonomic API. Built so an application's config layer doesn't need three different conventions to work consistently across environments.

Madara Worker & Queue Reliability

Madara Worker & Queue Reliability

Open Source - Starknet

Enhanced orchestrator reliability with queue handling refactor (#667), worker initialization/shutdown handling (#676), self-healing mechanism for orphaned jobs (#722), transaction finality validation in StateUpdateJobHandler (#733), and SQS message version filtering (#774).

Madara Orchestrator - Core Infrastructure

Madara Orchestrator - Core Infrastructure

Open Source - Starknet

Major contributions to Madara blockchain framework orchestrator. Enhanced MongoDB client as L3 pre-setup (#653), refactored Resource trait to accept Layer references (#664), integrated L3 support end-to-end (#654), and implemented Atlantic mock server with dummy verifier for L3 testing (#764).

Golem Cloud Bug Fix

Golem Cloud Bug Fix

Open Source Bounty

Completed GitHub bounty issue for Golem Cloud (golemcloud/golem#1189). Delivered high-value solution recognized by the open source community for its quality and impact on the project.

Contact

Get in Touch

Want to chat? Just shoot me a dm with a direct question on twitter and I'll respond whenever I can. I will ignore all soliciting.

GitHub
LinkedIn
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