Bhavna G.

Your SaaS backend shouldn't become the reason your product can't grow. I'm Bhavna, a Senior Backend Developer and PHP/Node.js Tech Lead with 10+ years helping SaaS, EdTech, CRM, & Telecom companies build, modernize, & scale the systems behind their products, including backend teams at Ei, Skyvera & STL. Top Rated on Upwork | 100% Job Success | AWS Solutions Architect Associate certified I help companies modernize legacy systems, build reliable APIs, automate manual workflows, scale SaaS platforms, & add AI features safely - with a focus on reliability, security, & long-term maintainability. I've worked on systems involving 2M+ historical student records, 3.2K+ assessment participants, 10.3K customer accounts, 232K service instances, & SaaS products with 1.8K+ active paid subscriptions. My goal isn’t simply to deliver code. It’s to make your product more reliable, easier to operate, safer to scale, & easier to extend. ► Recent Wins: ▪ Built the backend powering a nutrition SaaS with 2.5K+ registered clients and 1.8K+ active subscriptions across web & mobile ▪ Solo-built a multi-tenant SaaS platform (Python/FastAPI, React) with a dedicated owner dashboard for tenant management & audit monitoring, architected for 5-10 tenants, 2-5K daily registrations, and 20-40 concurrent users ▪ Automated a fully manual monthly SLA reporting process for a B2B telecom CRM managing 10.3K customer accounts and 232K service instances - reducing repetitive operational work & improving reporting reliability ▪ Architected a real-time data layer supporting 500 concurrent users without degrading production performance ▪ Led a SQL security hardening initiative across a large enterprise CRM codebase ▪ Shipped 17 sprints and 28+ change requests over a multi-year telecom CRM engagement ▪ Led unification of legacy LMS systems (2M+ student records) into a secure platform with zero reported session-security incidents ▪ Built a multi-mode proctored assessment platform used by 3.2K+ participants across India & UAE, supporting adaptive & non-adaptive tests ► 𝗖𝗼𝗿𝗲 B𝗮𝗰𝗸𝗲𝗻𝗱 E𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: ▪ API architecture & security (REST, JWT, Redis, rate limiting) that keeps production systems stable under real user load ▪ Database engineering: MySQL, PostgreSQL, schema design, query optimization, DB replication, secure query ▪ PHP at scale: CodeIgniter, CakePHP, Laravel, legacy modernization, Twilio integration ▪ Node.js + TypeScript: API-first services, background jobs, real-time systems ▪ AWS: S3, RDS, architecture for reliability + cost (SAA-C03 certified) ▪ CRM & LMS integrations (Vtiger, custom dashboards, third-party APIs) that shortened client onboarding & reduced manual support work ▪ DevOps & delivery: Git, Jenkins CI/CD, Docker ► 𝗔𝗜 & 𝗟𝗟𝗠 I𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀: ▪ OpenAI, Claude & Gemini API integrations: chat, classification & structured output ▪ RAG pipelines: embeddings, retrieval & vector databases (pgvector, Pinecone, Weaviate) ▪ AI backends: streaming, queues, cost controls & multi-model routing ▪ Secure AI: prompt injection defense, auth, rate limiting & observability ▪ AI automation & architecture: LLMs with CRMs, LMSs & SaaS workflows; AI-ready backends ► 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀 𝗜'𝘃𝗲 B𝘂𝗶𝗹𝘁 𝗼𝗿 L𝗲𝗱: → CORE Platform: modernization & unification of legacy LMS systems (AD, P&P, CARES) into a secure Node.js/PostgreSQL/Angular platform, zero reported session-security incidents, unifying a legacy system with 2M+ historical student records → ASSET Dynamic: secure, role-based online assessment platform serving India & UAE, with adaptive & non-adaptive tests, multi-mode proctoring, & Arabic subject assessment for the UAE region, powering ASSET Talent Search for 3.2K+ participants → Lintasarta CRM: B2B Telecom CRM on Vtiger + custom PHP (MVC), supporting 500 concurrent users across 10.3K customer accounts and 232K service instances, with automated SLA reporting & SQL security hardening delivered over 17 sprints and 28+ CRs requirement → Food Fuels: nutrition SaaS with CakePHP backend + API layer, serving 2.5K+ registered clients with 1.8K+ active paid subscriptions across web & mobile ► 𝗔𝘄𝗮𝗿𝗱𝘀 & 𝗥𝗲𝗰𝗼𝗴𝗻𝗶𝘁𝗶𝗼𝗻: 🎖️ "One Ei Award" (x2): Educational Initiatives 🎖️ "Star Award": STL 🎖️ "Employee of the Month": Outsourcing Technologies ► 𝗜 W𝗼𝗿𝗸 B𝗲𝘀𝘁 W𝗶𝘁𝗵: - Founders modernizing legacy PHP (CodeIgniter, CakePHP → Laravel/Node.js) - SaaS teams adding AI without breaking their stack - EdTech, LMS, & CRM products scaling securely - Teams wanting an architect-level partner, not a task-only coder ► 𝗡𝗼𝘁 𝗮 F𝗶𝘁 𝗶𝗳: your priority is the lowest hourly rate over long-term maintainability, we may not be the best fit. I architect before I code, & that's the trade-off. Ready to Talk? Have a backend problem, legacy system, or AI feature in mind? Share your repo, API docs, or a quick description, I'll review it & recommend the fastest, safest path forward, then follow up within a few hrs.