Available for opportunities

Pradeep
Singroul

Software Engineer · Java Backend · API Architecture

Backend developer building high-performance REST APIs and scalable systems. Currently at InSnap Technology, crafting data intelligence platforms that process millions of records.

View Experience ↓ Get in Touch →
Scroll to explore
Introduction

About Me

I'm a backend engineer with a focus on building robust, scalable API systems using Java, Spring Boot, and Play Framework. I specialize in high-throughput data pipelines, email verification systems, and database query optimization.

At InSnap Technology, I work on ReachStream — a B2B sales intelligence platform — where I've improved search response times by 40%, reduced invalid contacts by 95%, and built multi-threaded bulk verification systems processing thousands of records concurrently.

I believe in writing clean, efficient backend code and collaborating closely with product and frontend teams to ship real impact.

2+
Years of Professional Experience
40%
Search Response Time Improvement
95%
Reduction in Invalid Contacts
1200+
Hours of Hands-on Development
const engineer = {
  name: "Pradeep Singroul",
  role: "Software Engineer",
  location: "Bangalore, India",
  stack: [
    "Java", "Spring Boot",
    "Play Framework", "Redis",
    "PostgreSQL", "ElasticSearch"
  ],
  passion: "Scalable APIs",
  available: true
}
Technical Expertise

Skills & Tech Stack

Languages
Java SQL JavaScript
Frameworks
Spring Boot Spring MVC Play Framework Hibernate
Databases
PostgreSQL MySQL Redis ElasticSearch
Tools & Dev
Git GitHub IntelliJ IDEA Postman VS Code Maven
Concepts
REST APIs Multi-threading Batch Processing Caching Query Optimization
Frontend
HTML5 CSS3 JavaScript
Career Journey

Work Experience

InSnap Technology Pvt. Ltd.
Software Engineer
Mar 2024 – Present
  • Backend developer for ReachStream, a B2B sales and marketing data intelligence platform.
  • Designed and developed RESTful APIs enabling efficient lead data retrieval and management.
  • Implemented advanced search & filtering with ElasticSearch, improving response time by 40%.
  • Developed secure email verification & reveal features, reducing invalid email usage and enhancing data accuracy.
  • Built a credit deduction system charging users only for valid, verified emails — ensuring fair usage.
  • Built bulk contact verification system using multi-threading & batch processing for thousands of records.
  • Integrated Redis caching, reducing database load and boosting overall system performance.
  • Developed automated CSV export and wishlist management features for verified contacts.
  • Optimized PostgreSQL queries for improved response time and horizontal scalability.
Java Play Framework PostgreSQL Redis ElasticSearch REST API
Mentation Solution
Software Developer
Oct 2023 – Mar 2024
  • Designed and implemented RESTful APIs to connect frontend with backend services.
  • Optimized database queries and managed relational data using PostgreSQL.
  • Collaborated with cross-functional teams to understand requirements and deliver robust solutions.
  • Used GitHub for version control, code reviews, and team collaboration workflows.
Java Spring Boot PostgreSQL GitHub REST API
Masai School
Full Stack Web Development Trainee
2022 – 2023
  • Completed an intensive 9-month full-stack web development program with 1200+ hours of hands-on coding.
  • Built multiple projects using Java, Spring Boot, Hibernate, MySQL, HTML, CSS, and JavaScript.
  • Worked in collaborative team environments simulating real-world agile development workflows.
  • Led a 4-member team as Team Lead on the CoSchedule clone project, coordinating tasks and delivery.
Java Spring Boot MySQL HTML/CSS/JS Team Lead
Open Source & Personal Projects
Independent Developer
2022 – Present
  • Built and published multiple backend projects including a Weather-by-Pincode API, Rock/Scissor/Paper game backend, and a Hardware-Software ticketing system.
  • Earned HackerRank certifications in Java (Basic) and Problem Solving, demonstrating strong algorithmic fundamentals.
  • Contributed to a team nursery e-commerce platform (Garden Greens) with Spring Boot and Hibernate.
  • Led development of a SugarCosmetics clone and CoSchedule clone using HTML, CSS, and JavaScript.
Java Spring Boot Open Source HackerRank
What I've Built

Featured Projects

01
ReachStream — B2B Lead Platform
Scalable B2B data intelligence platform helping businesses access verified leads, enrich contact details, and perform advanced email verification. Processed thousands of records asynchronously with multi-threading and batch operations.
JavaPlayPostgreSQLRedisElasticSearch
Private Repo
02
Weather for Pincode
REST API service that returns detailed weather data (temperature, wind, sunrise/sunset) for any Indian pincode and date. Built with Spring Boot and Swagger documentation.
JavaSpring BootMySQLHibernateSwagger
GitHub ↗
03
Hardware-Software Ticketing System
Console-based complaint management system where customers log hardware/software issues, HODs assign engineers, and engineers update ticket statuses. Full workflow management with JDBC.
JavaMySQLJDBC
GitHub ↗
04
Garden Greens — Nursery Platform
Team project (4 members, 4 days) — a full-stack nursery e-commerce platform where customers order plants and sellers manage inventory. Built with Spring Boot, Hibernate, and Swagger.
JavaSpring BootMySQLHibernate
GitHub ↗
05
SugarCosmetics Clone
A pixel-faithful clone of the SugarCosmetics website with product browsing, interactive UI elements, and responsive design built in pure HTML, CSS, and JavaScript.
HTMLCSSJavaScript
Live ↗ GitHub ↗
06
CoSchedule Clone
Calendar scheduling web app clone. Led a 4-member team as Team Lead, coordinating tasks, code reviews, and delivery. Users can schedule meetings, set goals, and manage dates.
HTMLCSSJavaScript
Live ↗ GitHub ↗
Academic Background

Education & Certifications

Degree
Bachelor of Science
Aks University, Satna, Madhya Pradesh
2017 – 2021
Bootcamp
Full Stack Web Development
Masai School, Bangalore
2022 – 2023
Certification
Java Basic
HackerRank
2022
Certification
Problem Solving
HackerRank
2022
Let's Talk

Open to backend engineering roles, interesting problems, and collaborations. Reach out anytime.

prasingroul4899@gmail.com LinkedIn GitHub +91 9993651043