Prabin Ojha · oprabin

Building AI platforms, backend systems, and production infrastructure.

Senior Software & DevOps Engineer
Co-Founder & CEO

I design and ship conversational AI products, scalable microservices, and cloud-ready delivery systems. My work spans backend engineering, semantic search, deployment automation, and the full path from product architecture to production operations.

Java / Spring Boot Conversational AI pgvector Search CI/CD & Docker
View Selected Work Get In Touch
oprabin@linux:~$
oprabin@dev:~$ current_focus
AI products, backend systems, delivery infrastructure
oprabin@dev:~$ stack --primary
Java | Spring Boot | PostgreSQL | React
Docker | CI/CD | GCP | OpenAI | pgvector
oprabin@dev:~$

About

I am a Senior Software & DevOps Engineer and Co-Founder with 8+ years of experience building scalable microservices, cloud-native systems, and production-grade AI platforms. My strongest work sits at the intersection of backend architecture, infrastructure automation, and product delivery.

At Sajilo AI, I have been leading conversational AI systems for healthcare, finance, and education use cases, including FAQ-first with LLM-fallback architectures, bilingual support, semantic retrieval, admin tooling, and embeddable widgets. Before that, I spent years shipping high-availability Java systems, ETL workflows, and PostgreSQL-heavy platforms in production environments.

8+ Years in Production Engineering
3 Core Domains: AI, Backend, DevOps
E2E Architecture to Monitoring
oprabin.profile 
role = "Senior Software & DevOps Engineer"
current = "Co-Founder & CEO, Sajilo AI"

focus = [
  "Conversational AI platforms",
  "Microservices & API systems",
  "Semantic search with pgvector",
  "CI/CD and cloud-ready delivery"
]

approach = "Build reliable systems that survive production"

Selected Work

These are portfolio-style summaries drawn directly from my current CV and active professional focus.

Full Systems

End-to-end product and platform delivery

Built complete production systems from architecture to deployment, combining backend APIs, embeddable interfaces, database design, infrastructure setup, and operational workflows into shippable products.

  • Covered backend, frontend integration, deployment, monitoring, and production support.
  • Included admin panels, escalation workflows, structured content flows, and operational tooling.
  • Focused on reliable systems that can be run and maintained in real environments.

AI Platforms

Conversational AI and semantic retrieval

Built and led production-grade AI systems for healthcare, finance, and education with FAQ-first flows, LLM fallback, bilingual support, and retrieval-backed response generation.

  • Used PostgreSQL, pgvector, and OpenAI-based inference in practical application flows.
  • Connected retrieval and AI layers to conversational interfaces and backend services.
  • Designed around response quality, maintainability, and institutional use cases.

Backend & Delivery

Microservices, ETL, and delivery operations

Delivered Java and Spring Boot systems backed by PostgreSQL, ETL workflows, Docker-based deployments, CI/CD pipelines, Nginx, and monitoring across startup and enterprise environments.

  • Owned system design, development, deployment, and monitoring.
  • Built reproducible infrastructure and reliable release processes.
  • Supported ETL-heavy and data-intensive production systems without positioning it as AI work.

Experience

Co-Founder & CEO

Sajilo AI Pvt. Ltd.

August 2025 - Present

Kathmandu, Nepal

  • Built and led conversational AI systems across healthcare, finance, and education.
  • Architected chatbot pipelines, semantic search with pgvector, and OpenAI-based inference systems.
  • Delivered institutional platforms with admin panels, escalation workflows, and structured FAQ management.
  • Led backend APIs, embeddable chat widgets, and cloud-ready application delivery.
Conversational AI OpenAI pgvector Spring Boot PostgreSQL React

Senior Software Engineer

Viveka Services

October 2022 - October 2025

Kathmandu, Nepal

  • Designed and implemented scalable Java and Spring Boot microservices for high-availability systems.
  • Led ETL integration work to bring external datasets into internal platforms reliably.
  • Optimized large PostgreSQL-backed workflows and improved production data handling.
  • Owned the SDLC from system design and development through deployment and monitoring.
Java Spring Boot Microservices ETL PostgreSQL CI/CD

Freelance Software & DevOps Engineer

Remote

Independent engagements

Remote

  • Delivered backend systems and microservices solutions for startups using Java and Spring Boot.
  • Designed CI/CD pipelines and deployment automation for multi-service environments.
  • Built reproducible infrastructure using Docker, Nginx, and infrastructure-as-code practices.
  • Handled database operations including migrations, replication, tuning, and backup automation.
Docker Nginx Infrastructure as Code DevOps PostgreSQL

Tech Lead / Full Stack Engineer

DigiConnect

August 2021 - March 2023

Kathmandu, Nepal

  • Designed and deployed microservice-based enterprise architectures.
  • Built and maintained CI/CD pipelines for cloud-native applications on Azure.
  • Worked with stakeholders and clients to align technical delivery with business requirements.
  • Led development efforts to keep systems scalable and maintainable.
Azure Microservices Cloud CI/CD Technical Leadership

Software Development Team Lead

Deerwalk Inc.

July 2018 - August 2021

Kathmandu, Nepal

  • Led backend engineering for healthcare cost repricing systems aligned with CMS standards.
  • Developed algorithms for medical claims processing and repricing at scale.
  • Managed cross-functional collaboration across engineering, QA, and business analysis.
  • Delivered high-volume systems for healthcare data processing.
Healthcare Systems Algorithms Java Team Leadership

Skills

Languages

Java
Python
SQL
Bash

Backend & Architecture

Spring Boot
Microservices
API Design
System Design

AI & Data Systems

Conversational AI Systems
Semantic Search / pgvector
ETL Pipelines
PostgreSQL

DevOps & Cloud

Docker
CI/CD Pipelines
GCP
Nginx & Infrastructure Automation

Operating Range

Backend APIs to frontend chat widgets
Monitoring with Prometheus, Grafana, and ELK
Technical leadership and full SDLC ownership

Education

Bachelor's Degree in Computer Engineering

Kathmandu Engineering College

2014 - 2018 · GPA 3.6/4.0 (Honors)

Relevant coursework included Data Structures and Artificial Intelligence.

  • Blockchain-based Pharmacy Supply Chain System
  • Real-time Bus Tracking System

Contact

Let's talk

I am open to engineering leadership, backend architecture, DevOps, and AI platform conversations, especially where product ambition needs strong production execution.

Personal ooprabin@gmail.com
Professional prabin.ojha@sajilo.ai
Phone +977 9860271400
LinkedIn linkedin.com/in/oprabin
Website ojhaprabin.com.np
Location Kathmandu, Nepal