Nikunj G.

I build production systems enterprises run their business on: a corporate travel booking platform integrating Amadeus GDS with airline, hotel, and car-rental suppliers for institutional clients, and AIWI Team — a multi-tenant HRMS/project SaaS I founded. In 15 years I've shipped across travel, HRMS, eCommerce, and real estate, and I still write code every day. Where I'm genuinely strong: - Travel & GDS systems — Amadeus, Sabre, Galileo, plus non-GDS suppliers (AeroCRS, Radixx, Nightsbridge, Avis/Europcar). Booking flows, fare handling, supplier aggregation, PCI-aware payment integration. - Enterprise integrations — NetSuite, SAP, Xero/QuickBooks, payment/SMS/email gateways, SSO (OAuth 2.0, SAML, Keycloak, Okta). - SaaS architecture — multi-tenancy, RBAC, audit trails, and compliance-aware design (GDPR, POPIA, PCI-DSS). - Modernization — Java 8→21 migrations, monolith→microservices on Spring Boot/Spring Cloud, AngularJS→Angular 17+ upgrades. Core stack: Java (8–21), Spring Boot/Cloud/Security, Hibernate, Angular, React, PostgreSQL/MySQL, Kafka, Redis, Elasticsearch. DevOps: AWS (EKS, ECS, Lambda, RDS), Docker, Kubernetes, Terraform, Jenkins/GitLab CI, Prometheus/Grafana. How I work: I'll tell you honestly if something is outside my depth, give estimates I can defend, and write code your next developer can maintain. Most of my client relationships run multi-year for that reason. If your project involves travel tech, complex integrations, or scaling a Java platform, send me a message — I'll give you a straight assessment before either of us commits.