Prabin Ojha · oprabin

Building scalable systems, AI platforms, and cloud infrastructure.

Software Engineer · AI Builder · DevOps Practitioner
Technical Lead & Co-Founder

8+ years delivering production-grade backend systems, applied AI platforms, and cloud-ready infrastructure. I own the full path, from system architecture and backend engineering to deployment, monitoring, and team delivery.

Java / Spring Boot AI & Semantic Search DevOps & CI/CD Technical Leadership
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oprabin@linux:~$
oprabin@dev:~$ whoami
Software Engineer · AI Builder · DevOps · Tech Lead
oprabin@dev:~$ experience --years
8+ years · production systems · 3 domains
oprabin@dev:~$ stack --core
Java | Spring Boot | PostgreSQL | Docker
OpenAI | pgvector | AWS | GCP | CI/CD
oprabin@dev:~$

About

I am a software engineer and technical lead with 8+ years of experience building production-grade backend systems, applied AI platforms, and cloud infrastructure. My work spans system architecture, backend engineering, DevOps automation, and hands-on engineering leadership, owning the full lifecycle from design to deployment to production monitoring.

I have led teams of up to 12 engineers, delivered platforms built from the ground up, and worked directly with US-side business stakeholders on complex, domain-heavy systems. Currently co-founding Sajilo AI, building a governed AI platform for regulated industries.

8+ Years in Production
12 Engineers Led
E2E Architecture to Monitoring
oprabin.profile 
role = "Software Engineer & Technical Lead"
current = "Co-Founder, Sajilo AI"

domains = [
  "Backend & System Architecture",
  "Applied AI & Semantic Search",
  "DevOps & Cloud Infrastructure",
  "Engineering Team Leadership"
]

approach = "Ship reliable systems. Own the full stack."

Projects

A selection of the systems and platforms I have designed, built, and led to production.

AI Platform · 2025-Present

Governed AI Platform: Sajilo AI

Co-founded and building a document-intelligent AI platform for professional knowledge work in regulated industries: law, audit, banking, corporate finance.

  • RAG with hybrid semantic and keyword search over institutional documents.
  • Role-based access controls, citation-grounded outputs, and full audit trails per query.
  • Built for regulated environments where every answer must be traceable.
RAG pgvector OpenAI Spring Boot PostgreSQL AWS

Healthcare Systems · 2022-2025

US Healthcare Eligibility Platform: Viveka Services

Technical lead on an eligibility platform built from scratch for US labor union benefit funds, working with a team of 12 engineers across the full system lifecycle.

  • Multi-constraint eligibility engine: hourly reporting, employer contributions, rolling-window rules.
  • EDI 834 outbound filing to insurance carriers monthly. Member mobile insurance card.
  • 6-month ETL migration of 40+ years of member records, zero data loss, formally signed off.
Java Spring Boot PostgreSQL AWS EDI 834 ETL Team of 12

Healthcare Systems · 2018-2021

Claims Repricing Engine: Deerwalk Inc.

Led backend engineering and delivery of a proprietary Reference-Based Pricing engine at a US population health analytics company, replacing a licensed third-party tool with an in-house CMS-aligned system.

  • Repricing logic across 8+ CMS Prospective Payment Systems.
  • Core Java on Hadoop, batch processing hundreds of thousands of claims per cycle.
  • Replaced a licensed third-party tool in production for real health plan clients.
Java Hadoop CMS/Medicare Batch Processing Elasticsearch Team Lead

Fintech · 2021-2023

Mikha: Video Banking & KYC Platform

Tech lead on Mikha, an enterprise video banking and KYC platform deployed to major Nepali commercial banks.

  • Remote KYC verification, loan discussions, and customer onboarding over secure video.
  • Owned system design, backend APIs, KYC flow, scheduling, and Azure deployment.
  • Compliance controls: geo-fencing and network quality thresholds enforced for call reliability.
Java Spring Boot Azure Docker KYC OAuth

Experience

Co-Founder

Sajilo AI Pvt. Ltd.

August 2025 - Present

Kathmandu, Nepal

  • Building a governed AI platform for professional knowledge work in regulated industries: law, audit, banking, and corporate finance.
  • Architecting a RAG pipeline with hybrid semantic search, citation-grounded outputs, and full audit trails per query.
  • Leading product strategy, system architecture, and engineering delivery end to end.
Conversational AI OpenAI pgvector RAG Spring Boot PostgreSQL AWS React

Senior Software Engineer & Technical Lead

Viveka Services

October 2022 - October 2025

Kathmandu, Nepal

  • Technical lead on a US healthcare eligibility platform built from scratch, driving system architecture and working with a team of 12.
  • Built a multi-constraint eligibility determination engine for US labor union benefit funds covering hourly reporting, employer contributions, and complex rolling-window rules.
  • Delivered EDI 834 outbound filing to insurance carriers, member mobile insurance cards, and COBRA eligibility module.
  • Led a 6-month ETL migration of 40+ years of member records with zero data loss, formally signed off by client.
Java Spring Boot PostgreSQL AWS EDI 834 COBRA ETL Team Lead

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

DigiConnect (now Bitskraft)

August 2021 - March 2023

  • Led backend engineering for Mikha, an enterprise video banking and KYC platform deployed to Nepali banks.
  • Owned system design, backend APIs, KYC verification flow, scheduling system, and full containerized Azure deployment.
  • Led a team of 5-6 engineers. Live at major Nepali commercial banks.
Java Spring Boot Azure Docker CI/CD KYC OAuth

Software Engineer → Team Lead

Deerwalk Inc. (now Cedar Gate Technologies)

July 2018 - August 2021

Kathmandu, Nepal · US-based company

  • Led delivery of a proprietary Reference-Based Pricing engine, replacing a licensed third-party tool with an in-house CMS-aligned repricing system covering 8+ Prospective Payment Systems.
  • Implemented CMS payment calculation logic across all service categories on Hadoop batch infrastructure.
  • Contributed to Makalu Plan Analytics: MARA risk scoring and Episodes of Care, surfaced via Elasticsearch reporting.
  • Regular direct collaboration with US-side product and business stakeholders.
Java Hadoop Elasticsearch CMS/Medicare Batch Processing Team Lead

Skills

Backend & Architecture

Java / Spring Boot
Microservices & API Design
System Architecture
PostgreSQL

AI & Data

RAG & Semantic Search
pgvector / OpenAI API
ETL Pipelines
Elasticsearch

DevOps & Cloud

Docker & CI/CD
AWS / GCP / Azure
Nginx & Infrastructure as Code
Prometheus / Grafana / ELK

Leadership

Engineering Team Lead (12+)
Full SDLC Ownership
Cross-functional Delivery
US Stakeholder Collaboration

Languages

Java
Python
SQL
Bash

Domain Knowledge

Healthcare Systems (US)
EDI Standards & Eligibility
Claims & Repricing Systems
Regulated Industry Platforms

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

If you're working on something in backend systems, AI, or cloud infrastructure, I'd enjoy the conversation.

Personal ooprabin@gmail.com
Professional prabin.ojha@sajilo.ai
WhatsApp Message me on WhatsApp →
LinkedIn linkedin.com/in/oprabin
Location Kathmandu, Nepal