Rantideb Howlader

Hi, I'm Rantideb👋

• Monitored and maintained system health across Airbnb's global platform, ensuring 99.99% high availability and a seamless user experience for multiple backend microservices.
• Developed automation scripts, internal tooling, and interactive monitoring dashboards using Node.js and cloud APIs, reducing manual operational tasks by 30%.
• Managed and configured CI/CD pipelines and deployment workflows, streamlining release cycles and reducing post-deployment incident rates.
• Participated in 24/7 on-call rotations and incident response drills, analyzing system logs and performance metrics to resolve outages quickly.

Featured Case Study: Incident Resolution & Latency Optimization

• Problem: During peak booking periods, a critical downstream pricing microservice suffered connection pool exhaustion, causing checkout API latencies to spike up to 3.5s and dropping conversions by 8%.
• Approach: Investigated system traces in Datadog and isolated a connection leak in the database middleware. Refactored the connection pool lifecycle, set up circuit breaking via Envoy, and tuned container memory limits.
• Result: Verified the fix under a simulated 5k concurrent load using K6. Connection usage stabilized, checkout latency dropped from 3.5s to 220ms, and zero pricing service incidents recurred during subsequent holiday traffic. (K6 load test logs are anonymized under NDA)

• Successfully delivered 70+ web applications for international clients across 15+ countries—spanning e-commerce, SaaS, news media, and educational sectors.
• Built and deployed 30+ dynamic websites using React.js, Node.js, WordPress, and WooCommerce—creating custom RESTful APIs, payment gateways, and management dashboards that scaled transactions by 20-50%.
• Configured and optimized secure cloud hosting setups on AWS and DigitalOcean—implementing backup strategies, SSL, and automated staging-to-production workflows.
• Provided end-to-end support, maintenance, feature upgrades, and training—earning a 98% client satisfaction rating and >60% repeat business.
• Authored 20+ pieces of SEO and technical content—blog posts, user manuals, help articles, and knowledge base documentation—which improved site engagement and supported organic search rankings.
• Provided comprehensive WordPress sales consulting and support, handled over 500 client tickets, and delivered 50+ live demos, maintaining a 95%+ CSAT and reducing churn by 15%.

Featured Case Study: Rebuilding Banaras Hindu University Portal

• Problem: The university's central academic portal struggled under concurrent traffic spikes of 10,000+ students during admission cycles, resulting in server time-outs, database locks, and fragmented student records.
• Approach: Led the full-stack architectural rebuild of the BHU portal. Migrated legacy static assets to AWS S3, set up CloudFront CDN caching, optimized SQL query plans, and redesigned the responsive student/faculty portal using React.
• Result: Load-tested the redesigned platform under simulated loads of 15,000 concurrent users. The system maintained 100% uptime, database query execution times fell by 75%, and the page load speed dropped from 4.8s to 1.1s, serving over 30,000 active monthly users smoothly. View Artillery load test log

• Coordinated multidisciplinary research projects for the Department of English, collaborating with Dr. Pravin Singh Rana (Travel & Tourism) on digital humanities and cross-cultural studies.
• Managed project plans, research timelines, and team deliverables for 5+ major initiatives—improving workflow efficiency by 20% and supporting successful grant and conference submissions.
• Led the design and implementation of data collection, quantitative/qualitative analysis, and technical reporting using Python, Excel, and Google Workspace.
• Organised and executed 50+ seminars, academic workshops, student support programs, and cultural events, driving engagement up by 35% across the Faculty of Arts.
• Managed, trained, and delegated a volunteer team of 50+, developing skills in leadership, HR coordination, internal communication, and logistics.
• Designed and implemented evidence-based feedback mechanisms, increasing student satisfaction and event effectiveness by 30%.
• Coordinated with faculty leadership, vendors, and cross-functional teams to deliver high-impact programs—optimising budgets, streamlining schedules, and ensuring successful program delivery.
• Developed event marketing strategies and digital content for social media and campus channels, substantially increasing participation and awareness.
• Maintained strict compliance with research ethics and documentation, delivering 100% on-time, audit-ready reports.

Featured Case Study: Digital Humanities Research & Colloquium Coordination

• Problem: Coordinating the submission, review, and scheduling of 150+ research abstracts for the 'Stories Matter' international conference was fragmented and paper-heavy, leading to scheduling conflicts and delayed peer reviews.
• Approach: Built a centralized digital submission form, set up automated tracking sheets via Google Sheets API, and created a responsive dashboard for the review committee to rate submissions.
• Result: Streamlined the abstract review timeline by 40%, eliminating paper records entirely. The conference was delivered successfully on time, hosting 250+ delegates with zero scheduling conflicts. View abstract review pipeline schema

Lead Full Stack Developer (May 2023 - Sep 2023)

• Managed a team of 3 developers to deliver 6+ production-ready client web applications, utilizing React.js, Node.js, and RESTful APIs.
• Oversaw technical architecture, sprint planning, and peer code reviews, improving team delivery velocity by 25%.
• Led the database and state migration of a legacy agency codebase to a modern TypeScript/Next.js stack, reducing code maintainability overhead and cutting bug resolution times by 40%.

Featured Case Study: Legacy Migration & Performance Optimization

• Problem: A major client's e-commerce platform suffered from a 5.2-second page load time and high database query latency on product searches, causing a 15% user drop-off.
• Approach: Audited database indexes, introduced Redis caching for catalog queries, and migrated the front-end to Next.js using static site generation (SSG) for product pages.
• Result: Load-tested search endpoints under simulated traffic, verifying a 70% decrease in database CPU utilization. The average page load time dropped to 1.4s, and user drop-off decreased by 12%. View database query audit log

Junior Full Stack Developer (Jan 2023 - May 2023)

• Developed and maintained 4+ responsive web applications for agency clients using React, Node.js, and headless CMS integrations.
• Contributed to high-traffic sites like kalkifashion.com, implementing secure JWT authentication flows and optimizing image loading.
• Wrote test cases and conducted manual/automated QA runs, reducing post-launch UI bugs by 30%.

Specialized in creating engaging, informative Bengali-language content on technology—articles, blogs, product descriptions, and more—tailored for Bengali-speaking audiences interested in tech.