Backend & AI Systems Engineer

Ahmedabad, Gujarat, India

Building scalable distributed systems, AI-powered workflows, and real-time backend architectures.

Distributed SystemsRealtime BackendsAI WorkflowsFinTech PlatformsDistributed SystemsRealtime BackendsAI WorkflowsFinTech Platforms

Harsh Prajapati engineers fast fintech and AI products with pragmatic architecture, async processing, and performance-minded delivery that recruiters can scan in seconds and teams can trust in production.

40%

Latency reduction

5K-20K

Async jobs per day

<100ms

Response baseline

2.5+ yrs

Experience

About Me & Engineering Focus

Engineering resilient distributed systems, scalable APIs, and intelligent AI workflows.

Specializing in high-throughput backend services, event-driven architectures, and production-grade utilities that solve real-world calculation and automation challenges.

I am a Backend & AI Systems Engineer based in Ahmedabad, India, dedicated to designing high-performance architectures that remain reliable under intensive production workloads. My core expertise centers on building event-driven microservices, asynchronous job queues, and robust transactional backends across fintech and intelligent data platforms.

Beyond core infrastructure, I build and maintain a comprehensive suite of free, client-side developer and consumer utility calculators. Each tool is built with a focus on instantaneous execution, strict client privacy, and zero unnecessary overhead—delivering reliable answers for financial planning, data conversions, health metrics, and developer workflows.

I also document real-world architectural patterns and optimization techniques in my technical blog. From Core Web Vitals optimization to distributed locking with Redis and RabbitMQ stream processing, my goal is to share pragmatic, battle-tested knowledge with engineering teams worldwide.

2.5+

Years building

Realtime

Async systems

Performance

Primary lens

2023

Joined WebMob Technologies

Started building production APIs, payments, and scalable backend systems for fintech products.

2024

Distributed systems focus

Expanded into Redis-backed orchestration, RabbitMQ workflows, WebSockets, and async job processing.

2025+

AI systems & realtime workflows

Shipped OpenAI and Gemini-powered product flows with performance tuning, caching, and operational reliability.

Skills

Backend-first capabilities with a strong systems, AI, and product delivery range.

The stack centers on resilient APIs, event-driven services, data performance, and AI integrations that fit real production constraints.

Backend

6 tools

Node.jsTypeScriptJavaScriptFastAPIGraphQLWebSockets

Databases

4 tools

PostgreSQLMongoDBRedisPrisma

AI & LLM

4 tools

OpenAI APIGemini APIPythonPrompt workflows

Cloud & DevOps

4 tools

AWSDockerRabbitMQCI-ready architecture

Frontend

4 tools

React.jsNext.jsTailwind CSSFramer Motion

System Design

4 tools

Event-driven systemsDistributed lockingCachingObservability

Capability radar

Node.jsTypeScriptJavaScriptFastAPIGraphQLWebSocketsPostgreSQLMongoDBRedisPrismaOpenAI APIGemini APIPythonPrompt workflowsAWSDockerRabbitMQCI-ready architectureReact.jsNext.jsTailwind CSSFramer MotionEvent-driven systemsDistributed lockingCachingObservabilityNode.jsTypeScriptJavaScriptFastAPIGraphQLWebSocketsPostgreSQLMongoDBRedisPrismaOpenAI APIGemini APIPythonPrompt workflowsAWSDockerRabbitMQCI-ready architectureReact.jsNext.jsTailwind CSSFramer MotionEvent-driven systemsDistributed lockingCachingObservability

Projects

High-impact platforms where backend reliability, event flows, and product speed all mattered.

Each project emphasizes architecture as a user experience: low latency, dependable orchestration, and measurable engineering outcomes.

Project 1

Loan Marketplace Platform

Event-driven lending workflows with realtime messaging and sub-50ms internal communication.

Node.jsPostgreSQLRedisRabbitMQAWS S3WebSocketsStripe

architecture-diagram.json

Layer 1

Async lending workflows

Layer 2

Distributed locking

Layer 3

Sub-50ms messaging

Event-driven coordination

Purpose-built flows that reduce friction between backend scale, product timing, and operational clarity.

Realtime feedback loops

Purpose-built flows that reduce friction between backend scale, product timing, and operational clarity.

Performance-first delivery

Purpose-built flows that reduce friction between backend scale, product timing, and operational clarity.

Project 2

Real Estate Multi-Bank Co-Lending Platform

Multi-bank backend orchestration with repayment scheduling, caching, and financial synchronization.

Node.jsPostgreSQLRedisRabbitMQStripeWiseAWS

architecture-diagram.json

Layer 1

Multi-bank orchestration

Layer 2

RBAC scheduling

Layer 3

Redis caching

Project 3

AI Home Design & Commerce Platform

AI-powered image pipelines for staging, transformation, recommendations, and media updates.

PythonReact.jsAWS S3Gemini APIOpenAI API

architecture-diagram.json

Layer 1

Virtual staging

Layer 2

Day-to-dusk AI

Layer 3

Realtime media updates

Open-Source Utilities & Tools

100+ Free Online Calculators & Engineering Utilities

Explore privacy-first, client-side utilities engineered for instant calculation, financial forecasting, data formatting, and daily productivity.

Finance & Wealth

SIP Calculator

Calculate compounded returns, total wealth accumulation, and annualized maturity gains for mutual fund investments.

Open Tool

Loans & Mortgages

Loan EMI Calculator

Compute monthly installment breakdowns, total interest payable, and principal amortization for home or auto loans.

Open Tool

Business & Tax

GST Tax Calculator

Determine inclusive and exclusive Goods and Services Tax amounts across standard 5%, 12%, 18%, and 28% tax slabs.

Open Tool

Wellness & Health

BMI & Health Calculator

Estimate Body Mass Index, healthy weight thresholds, and baseline metabolic insights with metric and imperial units.

Open Tool

Developer Utility

JSON Formatter & Validator

Beautify, inspect, minify, and validate JSON payloads with syntax error detection and tree navigation.

Open Tool

Time & Dates

Age & Date Calculator

Calculate exact chronological age in years, months, weeks, and days, including upcoming birthday countdowns.

Open Tool

Content & Copy

Word & Character Counter

Analyze word count, reading duration, character density, and readability metrics for articles, essays, and metadata.

Open Tool

Mathematics

Percentage Calculator

Compute percentage increases, price markups, academic grades, and discount proportions instantly.

Open Tool

Looking for a specific category?

From Finance and Tax to Health, Developer APIs, SEO, and Unit Converters.

Finance Health Developer Date & Time SEO Text

Engineering Insights & Articles

Technical Guides, System Architecture & Performance

Deep dives into distributed systems, Redis caching, RabbitMQ event workflows, Core Web Vitals, and building monetization-ready web platforms.

2026-05-015 min read

Best Online Calculators for Daily Life in 2026

A practical roundup of calculators that save time for finance, health, study, and business workflows.

best online calculatorsdaily life tools

Read Full Guide

2026-05-035 min read

How to Improve Core Web Vitals for Tool Websites

Performance tactics for utility-heavy sites that still need strong SEO and ad revenue.

core web vitalstool website seo

Read Full Guide

2026-05-065 min read

AdSense-Friendly Content Strategy for Online Tools

How to pair useful tool pages with search-intent blog content without creating thin pages.

adsense content strategytool page seo

Read Full Guide

Experience

WebMob Technologies | Software Developer

Since December 2023, Harsh has focused on backend infrastructure, AI integrations, and fintech reliability for production environments.

Dec 2023 - Present

Vertical timeline of impact

Built REST and GraphQL APIs for production fintech workflows.

Reduced P95 latency by 40% while maintaining sub-100ms response paths.

Scaled async systems processing 5K-20K jobs per day.

Integrated Stripe, OAuth, AWS S3, OpenAI, and Gemini into customer-facing flows.

Used Redis caching and RabbitMQ pipelines to lower DB read pressure by 40%.

Achievements

Proof of consistency, teamwork, and technical discipline.

These highlights reinforce the profile beyond the stack itself: collaborative execution, habits of practice, and steady growth.

Team Player Recognition

Recognized for cross-functional execution and reliability.

LeetCode 50 Days Badge

Consistent problem-solving streak with strong fundamentals.

300+

DSA Problems Solved

Sharpened data structures and systems-oriented thinking.

Certifications

JavaScript and Python certifications supporting core delivery work.

Hobbies

Creativity that feeds the engineering mindset.

Cricket, chess, music, and content creation show up here as visual motifs and as the thinking habits behind Harsh’s systems work.

Cricket

Fast reactions

Pace, anticipation, and sharp decision-making influence how I approach realtime backend systems.

Chess

Strategic patterns

Long-horizon planning, tradeoff analysis, and pressure-tested sequencing shape my engineering style.

Music

Rhythm and texture

Rhythm and layering inspire smooth interfaces, balanced motion, and deliberate timing.

Content Creation

Narrative in motion

Storytelling helps me communicate technical systems clearly to product, design, and stakeholders.

Contact

Open to backend, platform, and AI systems opportunities.

The form sends directly through secure SMTP credentials with validation, basic spam control, and clear feedback states.

Building scalable distributed systems, AI-powered workflows, and real-time backend architectures.

Distributed SystemsRealtime BackendsAI WorkflowsFinTech PlatformsDistributed SystemsRealtime BackendsAI WorkflowsFinTech Platforms