Open to opportunities

Sagar Jain

@sagarjain2

Message

I build scalable Java backend platforms for travel, HR, finance, and lending products.

India

Message

What I'm looking for

I'm open to Senior Java Developer, Backend Engineer, and Tech Lead roles where I can build scalable backend systems, lead technical design, mentor engineers, and deliver reliable production platforms.

I'm architecting the hotel management backend for Cygnus Dynamics' large-scale travel booking platform, owning system design, 50+ API contracts, and schema decisions for 200+ hotel partners.

I designed the full hotel lifecycle from onboarding and inventory to dynamic pricing, bookings, payments, and settlements. I use Java 21, Spring Boot, PostgreSQL, Redis, Flyway, Docker, and AWS to build maintainable systems, including availability and pricing caching flows.

Previously at TaskUs, I led a team of 4–5 developers building an enterprise HR platform for 1,000+ employees globally, delivering 20+ secure RESTful APIs and mentoring junior developers through code reviews.

Across CRM Services India and Quess Corp, I've delivered role-based finance reporting, Kafka-driven data processing, BI integrations, and microservices-based loan application APIs. I bring impact-analysis discipline to cross-module changes and keep architectural decisions documented.

Experience

Work history, roles, and key accomplishments

Current

Senior Java Developer — Backend Lead

Current

Cygnus Dynamics

Feb 2026 - Present (6 months)

Building the hotel management backend for a large-scale travel booking platform.
• Sole technical authority — own system design, 50+ API contracts, schema decisions for 200+ hotel partners
• Designed full hotel lifecycle: onboarding, room inventory, dynamic pricing, booking engine, payments & settlements
• Built flexible rate & pricing engine: seasonal, promotional, occupancy-based pricing with t

PostgreSQL Flyway Redis Cloudinary Docker AWS API Design System Architecture Caching Event Driven Architecture

Lead Software Developer

TaskUs

Feb 2024 - Nov 2025 (1 year 9 months)

Led a team of 4–5 developers building an enterprise HR platform for 1,000+ employees globally. • Built 20+ secure RESTful APIs for candidate profile management with encrypted document workflows • Architected high-availability modules for skill capture, certifications, and career pathing • Mentored 3 junior developers — measurable reduction in production defects through code reviews Stack: Core Jav

Back End Developer

CRM Services India Private Limited

Nov 2022 - Feb 2024 (1 year 3 months)

Built a centralized finance reporting platform providing 200+ users with unified, role-based access to BI tools and reporting dashboards. Integrated Tableau and Sapiens, implemented Apache Kafka for event-driven data processing, and designed multi-level permission-based access control across finance tool integrations.

Back End Developer

Quess Corp Limited

Sep 2020 - Nov 2022 (2 years 2 months)

Developed core features for a Microservices-based loan application system, building 15+ REST APIs for document management and real-time status tracking. Mentored junior developers, conducted code reviews, and delivered across full Agile/Scrum lifecycle with consistent sprint delivery.