Open to opportunities

Badal Sahani

@badalsahani

Message

Senior software engineer building scalable SaaS and AI-powered backend systems.

Zimbabwe

Message

What I'm looking for

I’m looking for a team where I can lead backend architecture, build scalable SaaS and reliable CI/CD, and ship AI/GenAI features end to end. I value ownership, clean engineering standards, and measurable performance and cost improvements.

I’m a Senior Software Engineer focused on designing production-grade systems that scale—then driving them to measurable outcomes. I’ve led teams of 3–5 developers across multiple production apps, setting architectural standards and tightening engineering execution through code reviews and sprint planning.

In my current role, I’ve built and integrated payment infrastructure with cryptographic signing, split-payment routing, and EMI management—digitizing institutional fee collection end to end. I’ve also orchestrated deployments on AWS EKS using Helm, delivering reliability (99.9% uptime) while improving performance through Redis caching and robust CI/CD with GitHub Actions.

On my SaaS work for educational institutions, I designed a scalable platform with 200+ data models and 100+ REST APIs, supporting 30K+ users across institutions. I engineered fee management, reconciliation, and a configurable assessment engine, and integrated third-party platforms to reduce manual effort by 70%.

I also build modern AI pipelines and GenAI microservices. From an invoice extraction system using Spring Boot, Tesseract OCR, and GPT-4 Vision with an async Kafka architecture to a multi-tenant RAG platform using LangChain4j + pgvector, I prioritize correctness, cost control, and observability—backed by Prometheus/Grafana and careful security with JWT + RBAC.

Experience

Work history, roles, and key accomplishments

Current

Unity Enterprise SaaS Platform

Current

Hybrowlabs Technologies

Jul 2023 - Present (3 years)

Designed a scalable enterprise SaaS platform supporting 30K+ users with 200+ data models and 100+ REST APIs, including a mobile-responsive parent portal for end-to-end student lifecycle management. Built fee management and a configurable assessment engine (5 evaluation types, 16 reports), integrating 5 third-party platforms to reduce manual effort by 70%.

Python React 18+TypeScript Docker Kubernetes AWS S3 SES EKS RDS MariaDB REST API Development

Current

Senior Software Engineer (Hybrid)

Current

Hybrowlabs Technologies

Mar 2023 - Present (3 years 4 months)

Led a team of 3–5 developers across 9 production apps for 30,000+ users, improving onboarding time by 50% through code reviews and architectural standards. Integrated 4 payment gateways with cryptographic signing to digitize 100% of institutional fee collection and deployed on AWS EKS/Helm to achieve 99.9% uptime.

Team Leadership Helm Payment Gateways Cryptographic Signing (HMAC SHA256 SES Email Delivery

InvoiceAI Document Processing Pipeline

Hybrowlabs Technologies

Jan 2024 - Present (2 years 6 months)

Built an AI-powered invoice extraction system using Spring Boot 3, Tesseract OCR, and GPT-4 Vision prompt chains to extract structured invoice fields with 94% accuracy across 12 formats. Implemented an async Kafka pipeline with confidence scoring, human-in-the-loop review, and Redis-cached LLM responses to cut API costs by 45%.

Spring Boot Apache Kafka Tesseract Redis PostgreSQL

SynthHub GenAI Microservices

Hybrowlabs Technologies

Jan 2024 - Present (2 years 6 months)

Architected a multi-tenant GenAI platform using 8 Spring Boot microservices orchestrated via Spring Cloud Gateway and Kafka, including a RAG pipeline with LangChain4j and pgvector for semantic search over 100K+ documents. Added prompt versioning, A/B testing, and token-usage tracking with JWT/RBAC, and reduced LLM spend by 55% using Redis-cached embedding deduplication with Kubernetes-based observ

Spring Boot Apache Kafka LangChain4j Pgvector PostgreSQL Redis Kubernetes