Joobi S B

Architected and implemented scalable, high-throughput public APIs using Node.js, TypeScript, and Go, processing over 1 million requests per minute with sub-50ms latency.

Automated infrastructure provisioning with Terraform, GitHub Actions, and AWS/ECS, reducing deployment times by 40% and accelerating release velocity for core services.

Optimized Kubernetes node pools by upgrading with autoscaling and ephemeral OS disks, reducing memory usage by 20% and enabling zero-downtime migrations.

Engineered and deployed a PostgreSQL disaster recovery solution using Dockerized K8s CronJobs, decreasing Recovery Time Objective (RTO) by 60% to under 2 hours.

Led over 100 technical interviews for backend and data engineering roles, and designed a Go upskilling program that elevated the skills of 20+ developers.

Increased payment transaction success rates by over 20% through dynamic routing implementation using Golang rule engines.

Spearheaded the design and development of the disbursements module, now contributing over 40% of daily Total Payment Volume (TPV) utilizing Go, gRPC, and Kafka.

Architected resilient payment processing workflows handling 50,000+ peak transactions per minute with 99.99% uptime using Go, Kafka, and PostgreSQL.

Ensured high standards for fraud/risk solutions by conducting rigorous code reviews and managing 3rd-party integrations for Bureau.

Successfully migrated nearly 300 million CSV records to DynamoDB utilizing AWS Glue and Spark, enhancing data accessibility.

Developed a secure and compliant fintech backend core using Golang, PostgreSQL, and AWS, achieving zero critical security vulnerabilities.

Provided critical input in project planning, reducing delivery timelines and optimizing cost estimations.

Spearheaded pivotal backend engineering initiatives, architecting robust REST, gRPC, and GraphQL APIs with NodeJS, TypeScript, PostgreSQL, AWS Lambda, and SQS.

Drove critical feature development using Scala Akka actor models, optimizing e-commerce and risk analytics products for high-growth startups.

Developed highly available APIs in Scala, Elixir, and PostgreSQL for high-growth startups, enabling seamless operations for 0-1 products.

Optimized microservices, reducing API latency by 30%, which improved CSAT scores and customer conversion rates.

Pioneered an automated configuration management system using Ansible, reducing server provisioning time from 2 days to 4 hours.

Developed an efficient Java-based system for extracting and analyzing extensive log files, significantly increasing customer issue resolution speed.