p
ponir_saha

Ponir Saha

@ponir_saha

Java and Spring Boot Architect for SaaS Microservices and AI

Bangladesh
English
About me
Need a scalable SaaS backend, secure API, or AI/RAG integration? I'm Ponir, a Java and Spring Boot architect with 13+ years of experience building enterprise software across SaaS, finance, logistics, e-commerce, and EdTech. I can help you with: • Spring Boot APIs and microservices • Kafka and event-driven architecture • AI, RAG, and vector database integration • PostgreSQL, Redis, MongoDB, and OpenSearch • Docker, cloud deployment, and CI/CD You will receive clean, secure, maintainable code with clear communication and dependable delivery. Message me to discuss your requirements.... Read more

Skills

p
ponir_saha
Ponir Saha
Offline • 

See my services

Bug Fixes
I will fix java spring boot bugs API errors and performance issues
From$25 / projectMore details
API & Integrations
I will spring boot rest API development
From$40 / projectMore details

Portfolio

Work experience

Principal Architect

SchoolCollege • Self-employed

Mar 2026 - Present • 6 mos

- Building SchoolCollege, an AI-powered education SaaS platform for schools, colleges, teachers, students, and parents. - The platform turns approved books and PDFs into chapter-based AI tutoring, notes, practice exams, mistake tracking, and assessment feedback, while also supporting institution workflows such as admissions, attendance, fees, exams, results, class management, parent monitoring, and role-based portals. - Architecture includes multi-tenant SaaS design, Java/Spring Boot backend services, Angular portals, PostgreSQL/pgvector, OpenSearch, OCR, RAG workflows, asynchronous processing, JWT security, subscriptions, observability, caching, and multiple LLM providers. - Focus areas: production AI, secure access, human review, scalability, cost control, and academic workflow automation.

Architect

BJIT • Full-time

Feb 2022 - Mar 2026 • 4 yrs 1 mo

- Architected complex systems using microservices, event-driven patterns, and cloud-native designs. - Drove technical strategy while ensuring alignment with business objectives. - Provided hands-on leadership in Java, Spring, distributed systems, and large-scale data processing. - Mentored engineering teams to maintain coding best practices, performance, and security standards.

Dnet

Lead Java Developer

Dnet • Full-time

Oct 2020 - Feb 2022 • 1 yr 4 mos

- Managed the development of enterprise-grade applications, ensuring alignment with business objectives and compliance with best engineering standards. - Led cross-functional collaboration between business and engineering teams, streamlining project execution and enhancing stakeholder satisfaction. - Improved system performance by 35% by introducing event-driven architecture using Kafka. - Oversaw cloud migrations and infrastructure enhancements, increasing system reliability.