Open to opportunities

Abdula Melissa

@abdulamelissa

Message

I build production multi-agent AI and full-stack systems, turning RAG and LLMs into reliable products.

Romania

Message

What I'm looking for

I’m looking for a team where I can ship production multi-agent AI and RAG systems end-to-end—combining strong full-stack delivery, security-first engineering, and fast iteration from day one.

I’m a Full-Stack and AI Engineer with 5+ years shipping production systems across the US, Germany, and Romania. I specialize in multi-agent AI platforms, RAG pipelines, and LLM integration—backed by deep full-stack expertise across React, Next.js, FastAPI, and Docker.

Most recently, I architected a production multi-agent AI platform with 10+ specialized agents (intent classification, SQL generation, query refinement, result fusion, OCR ingestion) that’s deployed and used daily by enterprise clients. I also built semantic search over 10,000+ documents with pgvector, cutting query resolution to under 1 second and eliminating manual document retrieval entirely.

I enjoy turning ambiguous user intent into dependable functionality—like my natural language-to-SQL engine over MS SQL Server, delivered to production via ArgoCD with Redis caching, JWT authentication, and rate limiting. I also design for secure, real-world workflows, including AES-256-GCM encryption and WebAuthn passkey authentication for sensitive financial data.

Beyond AI, I’ve led end-to-end product delivery: building a tax compliance SaaS from scratch (UBL XML e-invoicing, payroll, VAT journals, statutory reporting), developing a litigation support platform in Elm with a Rust real-time backend, and owning architecture and AWS infrastructure in healthcare document/claims systems. I’m motivated by shipping reliable software that performs, scales, and stays maintainable.

Experience

Work history, roles, and key accomplishments

Current

AI & Databases Lab Assistant

Current

Ovidius University Of Constanta

Jan 2025 - Present (1 year 4 months)

Designed and delivered an AI lab curriculum covering LLMs, RAG pipelines, vector embeddings, prompt engineering, and vector databases (Chroma, Pinecone). Taught database lab sessions in PostgreSQL and Oracle, focusing on schema design, query optimization, and performance tuning.

LLM Embeddings Prompt Engineering Chroma Pinecone PostgreSQL Oracle Curriculum Design Teaching

Full-Stack Developer

US Depo & Case Smart

Jan 2024 - Jan 2025 (1 year)

Led frontend development of a litigation support platform enabling document intake, case tracking, and transcription review for US legal teams. Engineered a Rust backend to process multiple deposition streams in real time alongside a full case management interface deployed on AWS.

Elm Rust AWS Frontend Development Case Management Concurrency API Integration

Full-Stack Developer

Romanian Tax Compliance SaaS

Jan 2024 - Jan 2025 (1 year)

Built a tax compliance SaaS from scratch to automate e-invoicing (UBL XML), payroll calculations, VAT journals, and statutory tax reporting across multiple legal entity types. Secured sensitive data with AES-256-GCM encryption and WebAuthn passkey authentication, and automated migrations from legacy accounting systems.

React NestJS PostgreSQL WebAuthn AES 256 GCM VAT Journals Data Migration

Full-Stack Developer (Lead)

HSI Healthcare Software Institutes

Jan 2023 - Jan 2024 (1 year)

Sole lead engineer for a claims and document management platform, owning end-to-end architecture including data modeling, API design, and AWS infrastructure. Delivered the full product lifecycle and built lifecycle tracking for claims, fines, and case documents.

React NestJS PostgreSQL AWS S3 Docker Data Modeling API Design Infrastructure Product delivery Claims Management

Full-Stack Developer

Admin Tools

Jan 2021 - Jan 2023 (2 years)

Built a self-service deployment platform that let internal teams trigger cloud-native deployments via a React dashboard, eliminating manual DevOps dependencies. Implemented GitOps CI/CD with GitHub Actions, NATS-based event monitoring, and Stripe billing integration across a microservices architecture.

NestJS PostgreSQL Docker GitHub Actions GitOps NATS Stripe Billing Microservices React CI CD

AI Engineer & Full-Stack Developer

Harris Computer

Jan 2025 - Present (1 year 4 months)

Architected a production multi-agent AI platform with 10+ specialized agents for intent classification, SQL generation, query refinement, OCR ingestion, and result fusion, used daily by enterprise clients. Built pgvector semantic search over 10,000+ documents (sub-1-second resolution) and delivered a natural-language-to-SQL engine with Redis caching, JWT auth, rate limiting, and ArgoCD deployment.

fastAPI Pgvector Next.js Docker ArgoCD Redis RAG

Education

Degrees, certifications, and relevant coursework

Ovidius University of Constanta

Master of Science (M.Sc.), Cyber Security & Machine Learning

Grade: 10 / 10

Earned an M.Sc. in Cyber Security & Machine Learning. Thesis focused on a security-first multilayer web application with PostgreSQL architecture.

Ovidius University of Constanta

Bachelor of Science (B.Sc.), Computer Science

Grade: 9.40 / 10

Earned a B.Sc. in Computer Science. Thesis covered a 3D AI virtual assistant for guided physical exercise, including modeling, animation, and full-stack implementation.