AI Systems · Backend Architecture · SaaS · Distributed Systems

I build complex software systems from idea to production.

I'm Vivekananthan, a founding engineer, backend architect and AI systems engineer. I work with startups and product teams to turn difficult technical problems into reliable production systems.

Let's discuss your project → Book a 30-min call
10+ YEARS/ FORMER AMAZON/ 3× FOUNDING ENGINEER/ BENGALURU · WORLDWIDE
What I've built
100+
SaaS clients
1M+
Events / match
1.3M+
Streaming users
99.9%
SaaS uptime

Where I can help

01 / 04
A

AI & Agent Systems

Production AI systems rather than prototypes.

AI agents RAG LLM integration Orchestration Knowledge graphs Evals & observability
“How do we turn this AI prototype into a reliable product?”
B

Backend & Platform Architecture

Designing the systems underneath serious products.

Python / FastAPI Node / TypeScript Microservices Event-driven PostgreSQL / Redis AWS
“Our backend works, but we're hitting scalability and architecture problems.”
C

0 → 1 Product Engineering

From vague idea → architecture → product → production.

Technical discovery Architecture MVP development Cloud infrastructure Engineering setup
“We know roughly what we want. Can you figure out what to build and build it?”
D

Technical Leadership

For companies that already have a team.

Architecture reviews Technical strategy Fractional CTO Scalability planning Team building
“We need someone senior to set direction and raise the bar.”

Things I've built

06 PROJECTS
01

LegacyLeap

AI-powered legacy modernization

Role
First engineering hire · Senior Platform Engineer

A production AI platform that analyzes legacy Oracle, SSIS and SQL Server workloads and automates migration analysis, dependency mapping, transformation and code generation.

PydanticAI Langfuse Neo4j FastAPI Prefect Docker
Multi-agent workflows · knowledge graphs · asynchronous processing · production-grade AI
02

Fanlytiks

Real-time analytics at 1M+ events per match

Role
Co-Founder · CTO
1M+
EVENTS/MATCH
1.3M+
VIEWERS
10
ENGINEERS

Built the platform and the engineering team behind real-time sports analytics for BCCI/IPL and streaming partners: sub-second dashboards fed by a streaming pipeline, plus a 30% latency improvement across the ingestion path.

Kafka Kinesis Spark AWS
BCCI / IPL pilot · SRH · CricketGateway integration · Dotball loyalty API
03

Pixto

A SaaS product from zero to 100+ clients

Role
Co-Founder · Sole Backend Engineer

Built the entire backend and cloud infrastructure for a photo SaaS platform serving 100+ clients, 100K+ photos, 20K+ monthly uploads, 99.9% uptime. Sole engineer to production to paying customers.

AWS ECS Fargate Step Functions PostgreSQL Redis
The full 0 → 1 arc: architecture, infrastructure, delivery and the operational load of a live product.
04

Jiritsu

Distributed infrastructure & Web3

Role
Founding Engineer

Architected a distributed node framework for verifiable computation across multiple blockchain networks, built without an existing codebase to start from.

Consensus Orchestration Multi-node networking Smart contracts
Proof of depth: systems work well below the application layer.
05

HaHa

Real-time multi-chain infrastructure

Role
Founding Engineer · Backend Architect (consultant)

Built a backend ingesting blockchain events across Ethereum, Solana, BSC and Bitcoin, with a 3× throughput improvement with zero dropped wallet events.

Node.js GraphQL Lambda SQS Redis MongoDB
Throughput, reliability and back-pressure under continuous real-time load.
06

Totem

A consumer product, designed and built end to end

Role
Everything: product, design, build, infrastructure
entertotem.in ↗

The public product for a free-roam VR arena in Bengaluru: marketing site, world catalogue, a multi-step booking flow with online payment, WhatsApp fallback, video-led media delivery, plus SEO and analytics. Designed and built from scratch, and running in production with real customers.

Next.js TypeScript Booking & payments Edge media / R2 SEO & analytics
Proof that I can own the whole thing, positioning and design included, not just the backend.
Also built
CalibrateIn progress

A trainer for reviewing AI-generated code: a generator agent seeds deliberate semantic flaws, a grading agent scores the catch, the explanation and the false positives. Ports-and-adapters core, provider-swappable, tested against prompt injection.

Python · Pydantic · Clean Architecture
YouTube QA · RAG

Whisper transcription, SentenceTransformer embeddings and LangChain retrieval, answering with timestamp-linked citations.

LangChain · ChromaDB · Whisper · FastAPI
Kontra

OWASP-based security training: vulnerability scenarios and secure-code examples for developers.

Node.js · Python · Java
Serverless ETL

Event-driven image resizing and watermarking pipelines with real-time progress tracking and notifications.

Lambda · S3 · SQS
How I engage

I don't just take tickets.

The best projects I've worked on didn't start with a perfectly written specification. I've often joined when the product was still being figured out, working directly with founders and customers to understand the problem, challenge assumptions, design the architecture and then build the thing.

That's the kind of work I enjoy most.

01Understand the problem
02Design the system
03Build the product
04Ship to production
05Scale & improve

How I work

PROCESS
01
Discovery Understand the business problem, users, constraints and what actually needs to be built.
02
Architecture Define the system, technology choices, boundaries, risks and a realistic development plan.
03
Build Hands-on implementation with modern engineering practice and AI-assisted development where it makes sense.
04
Ship Testing, CI/CD, cloud infrastructure, observability and production deployment.
05
Iterate Measure what actually happens in production and improve from there.

A decade of building systems

2014 › NOW
2025–NOW
Independent Consultant Founding-engineer-level work for startups and product teams worldwide.
Consulting
2026–NOW
Totem · V6 Arena Founder. Designed and built the product, site and booking platform end to end.
Founder
2026
LegacyLeap Senior Platform Engineer. Multi-agent AI platform for legacy data modernization.
Contract
2025–2026
Fractional CTO Architecture, code quality and scaling for a three-service Django platform.
Advisory
2022–2025
Jiritsu Network Founding Engineer. Distributed node framework for verifiable computation.
Founding
2020–2022
Pixto Co-Founder and sole backend engineer. SaaS platform serving 100+ clients.
Founder
2017–2020
Fanlytiks Co-Founder and CTO. Real-time sports analytics; built and led a 10-person team.
Founder
2015–2017
Amazon Software Development Engineer. Large-scale services and operational rigour.
Employment
2014
Oracle Engineering Intern.
Employment
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Hi, I'm Vivekananthan.

I'm a software engineer, architect and entrepreneur based in Bengaluru. Over the last 10+ years I've worked across Amazon, startups and consulting engagements, building cloud-native SaaS platforms, real-time distributed systems, AI-powered products and blockchain infrastructure.

I've been a founding engineer three times, built engineering teams, worked directly with customers and founders, and spent years consulting with international clients.

I enjoy problems that sit somewhere between product and engineering, where the requirements aren't completely clear and someone needs to figure out what should actually be built.

Recognition Fanlytiks featured at RISE Conference, Hong Kong · technical contributor to the Jiritsu zk-MPC whitepaper Education MSc Software Engineering, Coimbatore Institute of Technology Based in Bengaluru, India · working with teams worldwide

Tools I work with

STACK
AILangGraph · PydanticAI · Langfuse · OpenAI · Claude · RAG · Neo4j
BackendPython · FastAPI · TypeScript · Node.js · PostgreSQL · Redis
InfrastructureAWS · Docker · Kubernetes · Terraform · CI/CD
DistributedKafka · SQS · event-driven architecture · microservices
Web3Solana · EVM · smart contracts · distributed infrastructure

I choose technology based on the problem, not the other way around.

What clients say

5.0 ON UPWORK

“Vivek is extremely professional, efficient and dedicated.”

Distributed computing platform
Backend engineer · 3+ year engagement

“It was great working with Vivek, he'll be a great asset to your team!”

Node.js / AWS platform work
Backend engineer · endorsed as collaborative
5.0 average rating across every rated engagement, from two-hour advisory calls to multi-year retainers. Upwork · 2021 to present

Building something technically difficult?

Tell me what you're working on, where you're stuck, or what you're trying to build.

Start a conversation → Book a 30-min call
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V1VEK · Vivekananthan Zeroloop Consulting Pvt. Ltd. Bengaluru, India