AI Captions & Hashtags
Gemini vision generates platform-specific captions for Instagram, LinkedIn, and X plus tailored hashtag groups for publishing workflows.
Available for thoughtful teams
Software thatfeels clear.
I'm Peeyush Kumar, a full-stack developer building calm, considered products from the first interface to the systems behind it.
A little context
I like making complex work feel simple.
I build modern full-stack products that combine strong frontend execution, scalable backend services, and reliable production delivery. My experience spans React.js, Next.js, TypeScript, Node.js, Spring Boot, PostgreSQL, cloud infrastructure, secure authentication flows, and AI-assisted workflows, with a focus on turning complex requirements into clean, usable product experiences.
Work with me3+
Years of full-stack experience
30%+
Manual support effort reduced
Modern
Product engineering mindset
Tools I reach for
12React.js01
Next.js02
TypeScript03
Node.js04
PostgreSQL05
Prisma06
Java07
Spring Boot08
AWS09
OAuth / JWT10
Gemini AI11
Razorpay12
Case study / 01
SnapOrbitAI
A production-style creator workspace that unifies AI metadata, transformation pipelines, semantic search, and billing into one authenticated product.
Live product preview SaaS workspace
The brief
SnapOrbitAI is a full-stack AI media SaaS platform for creators, marketers, and teams. It centralizes image and video workflows — generating AI metadata, transforming media, searching assets semantically, and managing subscription-based access — into one production-ready authenticated workspace.
The system
01
Next.js UI
02
Clerk Auth
03
API Route Handlers
04
Prisma / PostgreSQL
05
Cloudinary
06
Gemini AI
07
Razorpay
What it does
AI Quality Audit
Evaluates composition, brightness, and blur to create a stored quality score that helps teams triage weak creative faster.
Background Removal & Generative Fill
Cloudinary-powered cleanup and image expansion workflows make production editing repeatable without leaving the platform.
Semantic Search
Natural-language asset discovery uses embeddings and cosine similarity with a text-match fallback for resilient retrieval.
Batch Processing
Runs repeatable workflows in bulk, exports ZIP bundles, and enforces plan-based limits across heavier operations.
Video Studio
AI video analysis produces timestamped scene breakdowns, mood and topic detection, and video-aware captions for repurposing.
Video Transformation
Compression and landscape-to-portrait conversion pipelines rely on Cloudinary to prepare media for vertical channels.
Subscription Billing
Free, Pro, and Business plans run through Razorpay with signature verification and webhook-driven status sync.
Next.jsTypeScriptPrismaPostgreSQLClerkCloudinaryGemini AIRazorpayVitest
Server-side plan enforcement
Critical limits are enforced in backend logic instead of being hidden only at the UI layer.
Secure billing verification
Webhook signature validation protects subscription state transitions and billing integrity.
Cost-aware AI caching
Cached AI outputs reduce latency and spend, while paid users retain force-refresh controls.
Vitest-backed reliability
Coverage targets auth paths, feature limits, and billing verification behavior.
Case study / 02
AutoDev
AutoDev product preview Repository assistant
A repository-scoped RAG workspace that lets developers ask grounded technical questions about their own GitHub codebases and review streamed answers with file-level citations.
Next.js 16React 19TypeScriptSpring Boot 4Java 21PostgreSQLpgvectorSpring AI
Repository intelligence RAG workflow
01
GitHub OAuth
02
Repository sync
03
Async indexing
04
Vector retrieval
05
Cited answers
01
Repository ownership checks and a repo-scoped vector filter isolate every user query.
02
Source files are chunked, embedded, and indexed asynchronously without blocking the request that starts indexing.
03
Spring MVC streams OpenAI responses over SSE while persistent chat sessions retain citation metadata.
A practical toolkit
At home across the whole stack.
01
Frontend
React.jsNext.jsTypeScriptJavaScriptTailwind CSSFramer Motion
02
Backend
Node.jsREST APIsJavaSpring BootPostgreSQLOracle SQL/PLSQL
03
AI & LLM Integration
Spring AIAWS BedrockGemini AIMCP ServerAI ChatbotTool Execution
04
Payments/Infra
AWSDockerOAuth2JWTSAML SSORazorpay
Where I've been building
Experience that lives beyond the happy path.
Oct 2023 - May 2026
Java Web Developer
Aspire Software · Full-time · Remote
- Built full-stack capabilities for a multi-tenant enterprise vehicle logistics platform used by automotive OEMs for vehicle tracking, holds, rates, invoices, EDI workflows, and reporting.
- Built and maintained backend services using Java, Spring Boot, Hibernate, REST APIs, reusable business logic, validation, and centralized error handling.
- Developed full-stack application screens and workflows using React.js, JavaScript, and Java services integrated with Oracle-backed business processes.
- Worked on secure application flows using OAuth2, JWT, SAML SSO, RBAC, report-level authorization, and secure API integration patterns.
- Supported end-to-end delivery through requirement analysis, Oracle SQL/PLSQL query work, debugging, UAT fixes, code reviews, log analysis, and production support.
Feb 2023 - Sep 2023
Java Web Developer
ICL, Inc. · Full-time · Gurgaon, Haryana, India · Remote
- Worked as a Java Web Developer on an enterprise vehicle logistics platform for plant, rail, truck, and dealer workflows.
- Developed and maintained Java-based web modules, UI screens, and backend service integrations.
- Supported business workflows related to vehicle tracking, holds, rates, invoices, reports, and dashboards.
- Wrote Oracle SQL queries and assisted in debugging application issues across Java and database layers.
- Collaborated with senior developers, QA, and business teams for requirement understanding, defect fixes, and UAT support.
The Engineering Lab
Things I'm learning, written down.
Published on Hashnode · The Engineering Lab
Make something useful
Let's make the next thing count.
Open to Full-Stack Developer / Backend Engineer roles. For a quick hello, use the form or write directly.
peeyush.buisness45@gmail.com