Flexgrew Technologies LLP

"We're talking a full social networking platform with real-time messaging, social feeds, marketplace, groups, pages, user profiles, the whole nine yards. Kirit and his team handled all of it... Kirit and Flexgrew are the real deal. I'd hire them again without thinking twice." — Client, 395 hours, full year engagement That's our most recent Upwork review. We specialize in two things most agencies avoid: complex SaaS platforms and social networking products. Both demand senior engineers who can architect for scale from day one — which is what we do. WHAT WE BUILD: - Social networking platforms — feeds, messaging, profiles, groups, marketplace, media sharing - SaaS products — multi-tenant, billing, dashboards, APIs - Real-time systems — chat, notifications, live updates - High-performance backends in Go and Node.js - Modern frontends in Next.js and React OUR STACK: Go (Golang), Next.js, Node.js, React, PostgreSQL, MongoDB, WebSockets, Redis, AWS, GCP WHY CLIENTS HIRE US: - Senior devs only — no juniors learning on your codebase - Architecture-first approach — we plan before we ship - Daily updates, no ghosting, no dropped balls - Frontend, backend, real-time infrastructure under one roof - We've shipped real social platforms — not just CRUD apps OUR OWN PRODUCT: We also built flexgrew.cloud — a production WhatsApp Business SaaS with AI chatbots, bulk campaigns, and multi-tenant architecture. We don't just build for clients. We operate our own SaaS too. Send a message describing what you're building. We'll respond within a few hours with a clear next step.