Headline

Backend Engineer · Distributed Systems, Auth & Event-Driven Architecture | Java · Spring Boot · Quarkus · RabbitMQ · AWS . PostgreSQL . Identity & Access Management (Keycloak)

About

I build the backend infrastructure that financial and B2B platforms depend on — auth systems, distributed services, event-driven pipelines, and the kind of plumbing that has to work at 2am. Over 3 years across TCS and GroveTech Solutions, I've shipped production-grade systems in Java, Spring Boot, and Quarkus — with real stakes around security, reliability, and scale. Things I've built that I'm proud of: -Invite-based onboarding + Keycloak identity system with TOTP-based transaction approval — zero activation delay via real-time token validation -Event-driven architecture on RabbitMQ using outbox pattern + idempotency keys to eliminate message duplication across distributed services -Domain-driven RBAC system replacing static Keycloak roles with backend-managed, configurable permissions -Quorum-based transaction approval engine with configurable multi-party rules -Custom Keycloak SPI for secure OTP verification — deployed in production -Built multithreaded CDR file-processing system using ExecutorService, handling millions of records per run I care about systems that don't break silently. Race conditions, gRPC failures, webhook inconsistencies, AWS deployment bugs — I've debugged and fixed all of these in production. Currently open to: Senior Backend Engineer, Platform Engineer, or Applied Engineering roles at high-growth or AI-first companies where distributed systems and identity infrastructure are first-class concerns.

Location

Chikhli

AI stack

cursor

github copilot

langchain

openai

Work experience

Software Engineer at GroveTech Solutions LLC, Oct 2025 - Present · 9 mos, Surat, • Architected invite-based user onboarding integrated with Keycloak, enabling real-time activation and eliminating delays caused by scheduled workflows • Built an event-driven messaging layer using RabbitMQ with outbox and idempotency patterns, preventing duplicate processing across 3+ distributed services • Designed and implemented a quorum-based transaction approval engine with configurable business rules supporting multi-party authorization for high-value transactions • Replaced static Keycloak role management with a domain-driven RBAC system, enabling dynamic permission updates without application redeployment • Integrated TOTP-based multi-factor authentication for login and transaction approval workflows using Google Authenticator • Developed custom Keycloak SPI extensions for secure server-side authentication and verification flows • Investigated and resolved race conditions and gRPC thread pool bottlenecks, improving system stability under concurrent workloads • Implemented retry, compensation, and failure-handling mechanisms for distributed services running on AWS ECS • Integrated third-party KYB and identity verification APIs for compliant business onboarding workflows • Diagnosed and resolved production issues involving webhook delivery, deployment failures, and event consistency across services

Freelancer & Skill Development at Self-Employed, Sep 2023 - Sep 2025 · 2 yrs 1 mo, Gujarat, India, -Built 2 full-stack applications (Spring Boot + React/Next.js) exploring authentication flows, REST API design, and frontend fundamentals -Studied system design at HLD/LLD depth — distributed consensus, event sourcing, CQRS, and auth protocol internals -Prepared for and completed GRE/IELTS as part of an international study plan

Assistant System Engineer at Tata Consultancy Services, Feb 2022 - Mar 2023 · 1 yr 2 mos, Mumbai, • Developed backend services using Spring Boot, Hibernate, and AOP for user and organization management • Designed role-based systems with hierarchical organization structures • Improved concurrency handling, reducing failure rate from ~25% to under 10% under load • Built and maintained 300+ SoapUI test cases with encrypted parameter handling • Implemented GDPR-compliant data encryption scripts (Bash) • Developed multithreaded file-processing system using ExecutorService for CDR generation • Optimized logging strategy, reducing storage usage by ~90% while maintaining observability • Proposed and implemented POC for centralized logging using ELK stack.

Assistant System Engineer- Trainee at Tata Consultancy Services, Feb 2021 - Jan 2022 · 1 yr, Mumbai

Education

Bachelor of Engineering, Information Technology, Gujarat Technological University (GTU)

Quantum Computing (Foundation), Frontier Technology Institute