PrabalSingh*

I'm a freelance backend & cloud engineer — Java, Spring Boot, and AWS/Kubernetes are my stack. I take on scoped builds, retainers, and embedded sprints, and I ship systems built to actually stay up.

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Software EngineerAvailable for work — 2026
HELLO, I'M
Prabal
Pratap Singh
FREELANCE SOFTWARE ENGINEER

I build custom software and websites for businesses that want more than a template — clean architecture, real performance, and practical AI that solves actual problems.

Prabal
●
Backend

Java, Python, Spring Boot, FastAPI, REST APIs

●
Cloud & Data

AWS, Docker, Kubernetes, PostgreSQL, Redis, Kafka

●
Applied AI

RAG, LLM integration, LangChain, FAISS

Software
Engineer
Portrait of Prabal Pratap Singh
START WITH
ARCHITECTURE
A considered process that brings architecture, engineering discipline, and craft together to build systems with clarity and lasting value.
SYSTEMS
DELIVERY
TURNING REQUIREMENTS INTO CODE  •  SOFTWARE ENGINEER  •  TURNING REQUIREMENTS INTO CODE  •  SOFTWARE ENGINEER  •  TURNING REQUIREMENTS INTO CODE  •  SOFTWARE ENGINEER  •  TURNING REQUIREMENTS INTO CODE  •  SOFTWARE ENGINEER  •  TURNING REQUIREMENTS INTO CODE  •  SOFTWARE ENGINEER  •  TURNING REQUIREMENTS INTO CODE  •  SOFTWARE ENGINEER  •  
OUR PROCESS
Engineer working at a dark code editor
[ OUR APPROACH ]
ARCHITECTURE-FIRST DELIVERY
A thoughtful process built around architecture and momentum.
Decorative flowing lines
Decorative flowing lines
A process built on good questions, not guesses.
01
02
03
04
DISCOVER
Understanding the problem and where the system needs to scale.
DEFINE
Concrete architecture — data model, APIs, infrastructure.
BUILD
Iterative, tested, deployed continuously.
SHIP
Structured delivery, monitored in production.
GOOD SOFTWARE IS BUILT ON GOOD QUESTIONS. ARCHITECTURE PROVIDES THE DIRECTION, CODE GIVES IT FORM, AND TESTING ENSURES EVERY DETAIL SUPPORTS THE BIGGER PICTURE.
START A PROJECTGET IN TOUCH
Portrait
Depth
Over breadth
Kept sharp
Fewer tools
Java ✓ Python ✓ Spring Boot ✓ Kafka ✓ AWS ✓ Kubernetes ✓ PostgreSQL ✓ Redis ✓ LangChain ✓ FAISS ✓ Terraform ✓ Airflow ✓
Java ✓ Python ✓ Spring Boot ✓ Kafka ✓ AWS ✓ Kubernetes ✓ PostgreSQL ✓ Redis ✓ LangChain ✓ FAISS ✓ Terraform ✓ Airflow ✓

I build backend systems that survive their second year — typed contracts, honest schemas, and retrieval pipelines that cite their sources.

01
Languages

Java · Python · TypeScript · SQL

02
Backend

Spring Boot · FastAPI · Hibernate · REST APIs

03
Databases

MySQL · PostgreSQL · DynamoDB · Redis

04 · PRIMARY
Applied AI

LangChain · RAG · FAISS · LLM Integration

05
Cloud & DevOps

AWS · Docker · Kubernetes

06
Additional

Kafka · RabbitMQ · Git · CI/CD

What I do

Services
that ship

Clean architecture, real performance, and practical AI. Fixed-scope engagements or ongoing retainer — whichever fits how your team works.

Request a quote ↗
01↗
Custom web applications

End-to-end product builds — Java, Python, Spring Boot and FastAPI behind interfaces people actually want to use.

Java · Spring Boot · FastAPI
02↗
Backend & API engineering

REST APIs, Hibernate data layers, Kafka and RabbitMQ pipelines designed for clean failure modes.

REST · Hibernate · Kafka
03↗
AI integration & RAG systems

LLM integration, LangChain orchestration and FAISS vector search wired into your existing product.

LangChain · FAISS · RAG
04↗
Cloud & DevOps setup

AWS (EC2, S3, IAM), Docker, Kubernetes and Jenkins CI/CD so releases stop being events.

AWS · Docker · Kubernetes
05↗
Database design & optimisation

MySQL, PostgreSQL, DynamoDB and Redis — schemas and caching tuned for the queries you actually run.

PostgreSQL · DynamoDB · Redis
06↗
Architecture consulting

A second pair of eyes on scale, cost and reliability decisions before they become expensive.

Reviews · Roadmaps · Scaling
Java ·Python ·Spring Boot ·FastAPI ·PostgreSQL ·Redis ·AWS ·Kubernetes ·Kafka ·LangChain ·FAISS ·Jenkins ·
Java ·Python ·Spring Boot ·FastAPI ·PostgreSQL ·Redis ·AWS ·Kubernetes ·Kafka ·LangChain ·FAISS ·Jenkins ·
Moody workspace
Available for projects

Work®

FREELANCE · WEB DEVELOPMENT
Beyond mockups.Built to ship.

/  I build production web apps end to end — architecture, interface, database and deploy, without a team in between.

SHIPPED SOLOVittaManthanArchSentinel
WORK ↘CONTACT ↘
01 / VITTAMANTHAN

Your transactions,
decoded

A microservices fintech platform built on the Setu Account Aggregator framework — providing consent-based multi-bank data synchronization with a sophisticated RAG-powered chat assistant that intelligently answers questions about your own transactions. Supports 20+ languages including English, Hindi, Hinglish, Tamil, Telugu, Bengali, Marathi, Gujarati, Kannada, and many more for truly universal accessibility.

45%
FASTER DATA SYNC
20+
LANGUAGES SUPPORTED
VittaManthan — finance copilot dashboard
02 / ARCHSENTINEL

Architecture guardian
for every PR

An intelligent AI-powered GitHub application that automatically clones both sides of a pull request, executes five independent static-analysis engines simultaneously, and posts a comprehensive quantified 0–100 architecture health score as a detailed PR comment. Detects architectural drift by catching coupling hotspots, circular dependencies, layer violations, and design anti-patterns before they ship into production.

5
ANALYSIS ENGINES
4
RISK TIERS
ArchSentinel — landing pageArchSentinel — analysis engines

01 — Available now

Open.
Ready.
Available.

I take on scoped builds, retainers, and embedded sprints — one engineer covering backend, cloud, and AI, so you're not juggling three different hires.

Fast start

No lengthy onboarding — most engagements are scoped and moving within days.

Direct communication

You talk to the engineer building your system, not a layer of account managers.

Full ownership

From architecture to deployment — one person accountable for the whole system.

Decorative flowing lines
Let's answer some questions

Frequently Asked Questions

Web development is the process of building and maintaining websites. It involves a combination of client-side and server-side programming, database management, and other web-related technologies.

Essential languages for web development include HTML, CSS, and JavaScript for front-end development. For back-end development, popular languages include Python, Ruby, PHP, Java, and Node.js.

Front-end development focuses on the user interface and user experience of a website, while back-end development deals with server-side logic, databases, and application integration.

The time to develop a website can vary greatly depending on its complexity. A simple static website might take a few days, while a complex web application could take several months or even years.

Responsive web design is an approach to web design that makes web pages render well on a variety of devices and window or screen sizes. It ensures that websites are accessible and visually appealing across different platforms.

Available for projects

Let's worktogether

Have a project in mind? Click above or drop a note below. Let's create something exceptional together.

prabalsingh1410@gmail.com