Build.Scale.Secure.
Backend and distributed systems at production scale on AWS - event-driven APIs, Redis Streams, and reliability work that survives real traffic.
HemalBuha
I build secure, high-availability SaaS platforms - event-driven backends on AWS, release pipelines that catch problems before production, and systems that recover in minutes, not hours.
Six years across Edmingle and Rovae, from Laravel APIs to multi-tenant Node.js platforms with Redis Streams, CloudFront, and GitHub Actions. I care about the problems that only show up at scale - burst traffic, webhook idempotency, and the delivery work that keeps a platform trustworthy.
Featured case studies
Deep dives with architecture diagrams, trade-offs, and measurable outcomes from Edmingle production systems and open-source work.
Experience
Jul 2021 - Present
Edmingle
Senior Platform Engineer
- Architected cloud-native backend capabilities for a multi-tenant, white-label SaaS platform using Node.js, TypeScript, AWS, Redis, and MySQL, balancing customer-specific integrations with reusable platform patterns.
- Designed and deployed a serverless EC2 autoscaler (Node.js 24 / Lambda) for a warm-pool API fleet behind ALB - desired-state reconciliation, CPU scaling ladder, self-healing, and WAF IP-set sync with 271+ offline tests.
- Engineered a Redis Streams concurrency framework with asynchronous workers, retry handling, and alerting for signup, enrollment, and social workloads - creating a reusable event-driven processing model.
- Modernized release engineering by rebuilding GitHub Actions CI/CD pipelines and staging major database upgrades across private and shared environments without service interruption, saving roughly 10 minutes per build.
- Directed the Bunny-to-CloudFront asset migration with S3 and AWS services, reducing average asset response time by 67% while coordinating delivery dependencies across engineering teams.
- Optimized high-traffic APIs through read-path simplification, Redis caching, and RDS index cleanup, cutting targeted API P95 latency by 28.7% and the highest-impact endpoint by 54%.
- Strengthened platform security through VAPT remediation, IDOR and input-validation fixes, secure webhook idempotency, and auth hardening; contributed to ISO 27001 and GDPR readiness reaching 100%.
- Hardened payment and communications reliability across Razorpay, Stripe, PayU, and AWS SES with duplicate-webhook safeguards, settlement alerting, private email infrastructure, and a permanent Microsoft/Outlook deliverability fix.
- Guided architecture reviews, production incident response, delivery planning, and code-quality practices for a three-person infrastructure/backend team; mentored two engineers and enabled support self-service through secure API-key tooling.
Personal · Ongoing
ZyncSpace
Founder Engineer · Personal Project
- Building an AI-powered collaboration platform with real-time messaging, semantic search, and an embedded assistant on Node.js, AWS, Redis Streams, and WebSockets.
- Separated distributed event processing from interactive WebSocket flows so burst messaging and search indexing do not compete for the same request path.
- Designed for high availability across durable Redis Streams messaging and AWS-hosted application tiers.
Jul 2020 - Jul 2021
Rovae Inc.
Software Engineer
- Developed Laravel backend services and REST APIs backed by MySQL for inventory-management and point-of-sale applications, connecting multiple third-party systems to dependable business workflows.
- Refined application maintainability and deployment workflows through focused backend enhancements, making the codebase easier to operate and extend.
Completed
MCA (Cloud Technology)
Ajeenkya DY Patil University - Gold Medalist, CGPA 9.8/10
Selected engineering achievements
<5 min
MariaDB upgrade downtime
Zero data loss major-version upgrade in 2024
70%
API response time cut
Daily statistics moved to background jobs
~40%
Email delivery cost savings
AWS SES + custom-domain routing
<15 min
Disaster recovery RTO
RPO under 10 minutes
<1s
Batch progress API
Down from timeouts via Go + SQS workers
80%
Onboarding automation
New-client setup and Vimeo whitelisting
Certifications
3Aug 2025
Oracle Cloud Infrastructure 2025 Certified AI Foundations Associate
Oracle
View certificate
Aug 2025
Oracle Cloud Infrastructure 2025 Certified Foundations Associate
Oracle
View certificate
Jun 2021
Microsoft Certified: Azure Fundamentals
Microsoft
View certificate
Production depth by topic
Indexable pages on platform engineering, Kubernetes, AWS, system design, observability, and AI infrastructure - each with curated writing from production systems.
About Hemal Buha