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I am a Software Engineer with over 3 years of experience building scalable applications and AI-driven platforms. I specialize in backend development using Java, Python, and frameworks such as Spring Boot and FastAPI, with a strong expertise in AI agents and large language model (LLM) based security solutions. At Scale AI and Oasis, I developed agentic systems for adversarial simulations, vulnerability detection, and secure data workflows. I focus heavily on performance optimization, best coding practices, and utilize modern AI orchestration tools like LangChain and LangGraph. I am passionate about delivering efficient, reliable, and innovative software solutions that integrate AI to solve complex problems.…I am a Software Engineer with over 3 years of experience building scalable applications and AI-driven platforms. I specialize in backend development using Java, Python, and frameworks such as Spring Boot and FastAPI, with a strong expertise in AI agents and large language model (LLM) based security solutions. At Scale AI and Oasis, I developed agentic systems for adversarial simulations, vulnerability detection, and secure data workflows. I focus heavily on performance optimization, best coding practices, and utilize modern AI orchestration tools like LangChain and LangGraph. I am passionate about delivering efficient, reliable, and innovative software solutions that integrate AI to solve complex problems.

Nathnael Seleba

Full Stack Developer, App Developer, AI Engineer, +2

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I am a Software Engineer with over 3 years of experience building scalable applications and AI-driven platforms. I specialize in backend development using Java, Python, and frameworks such as Spring Boot and FastAPI, with a strong expertise in AI agents and large language model (LLM) based security solutions. At Scale AI and Oasis, I developed agentic systems for adversarial simulations, vulnerability detection, and secure data workflows. I focus heavily on performance optimization, best coding practices, and utilize modern AI orchestration tools like LangChain and LangGraph. I am passionate about delivering efficient, reliable, and innovative software solutions that integrate AI to solve complex problems.…I am a Software Engineer with over 3 years of experience building scalable applications and AI-driven platforms. I specialize in backend development using Java, Python, and frameworks such as Spring Boot and FastAPI, with a strong expertise in AI agents and large language model (LLM) based security solutions. At Scale AI and Oasis, I developed agentic systems for adversarial simulations, vulnerability detection, and secure data workflows. I focus heavily on performance optimization, best coding practices, and utilize modern AI orchestration tools like LangChain and LangGraph. I am passionate about delivering efficient, reliable, and innovative software solutions that integrate AI to solve complex problems.

Available to hire

I am a Software Engineer with over 3 years of experience building scalable applications and AI-driven platforms. I specialize in backend development using Java, Python, and frameworks such as Spring Boot and FastAPI, with a strong expertise in AI agents and large language model (LLM) based security solutions.
At Scale AI and Oasis, I developed agentic systems for adversarial simulations, vulnerability detection, and secure data workflows. I focus heavily on performance optimization, best coding practices, and utilize modern AI orchestration tools like LangChain and LangGraph. I am passionate about delivering efficient, reliable, and innovative software solutions that integrate AI to solve complex problems.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Software Engineer at Oasis

January 1, 2025 - Present

Designed secure agent workflows for AI-driven resume screening utilizing LangGraph, FastAPI, and LLMs to simulate HR logic for robust decision pipelines. Built a modular invoice processor using Google APIs and MongoDB, applying agentic task planning and secure orchestration across cloud services. Integrated LangChain, Google Apps Script, and webhook listeners to automate document handling and recommendation logic via external APIs. Developed scalable pipelines mimicking attacker logic for task-routing in multi-agent systems, modeling real-world autonomous AI behavior.

Backend Engineer at Scale AI

February 28, 2025 - August 20, 2025

Created a Java/Spring Boot REST API to validate AI prompts via a custom linting service, reducing review time by 40% and improving accuracy by 30%. Conducted debugging and unit testing to enhance system reliability and security throughout the software development life cycle. Reviewed and evaluated over 100 contributors' prompt and model response edits to identify essential prompts aligned with AI training objectives. Trained models from META, Cohere, Anthropic, and OpenAI using Java, C++, Python, HTML, and MySQL.

LLM Technical Assessor | Operations at Scale AI

September 30, 2024 - August 20, 2025

Designed and implemented an LLM-based interview framework using Java, Python, and MySQL. Coordinated with technical and business stakeholders to refine assessment accuracy. Collaborated with HR and technical teams to tailor assessments for over 1,500 hires, and led a team of 13 interviewers in goal-setting, coaching, and delegation. Created optimized solutions for competitive coding problems, developed comprehensive test cases, and wrote detailed editorials, improving assessment reliability and model alignment.

Software Developer at Teraki

September 30, 2023 - August 20, 2025

Developed and maintained the Audiobook Catalog service within a microservices architecture, improving audiobook metadata management and enabling advanced search and filter capabilities by 50%. Contributed to full-stack development with Java backend services and frontend UI components, enhancing customer satisfaction scores by 30%. Implemented over 100 unit tests in Java, conducted code reviews, and managed CI/CD pipelines using Git to ensure code quality and streamline deployments. Worked in an Agile environment, participating in stand-ups and sprint reviews to align with team objectives.

Software Engineer at Oasis

January 1, 2025 - Present

Developed a FastAPI-based application that automates extraction, analysis, and summarization of bloodwork data providing personalized health recommendations. Integrated advanced large language models like Google Gemini and vector search with Pinecone for context-aware summaries and protocol generation. Built agentic workflows using LangGraph and LangChain implementing ReAct agents for transparent reasoning and recommendations. Designed and implemented modular invoice processing system with Google APIs and MongoDB to automate document ingestion and data extraction with robust error handling. Engineered scalable document ingestion pipelines for medical data and enabled secure orchestration across cloud services.

Backend Engineer at Scale AI

February 28, 2025 - September 2, 2025

Created a Java/Spring Boot REST API to validate AI prompts via a custom linting service, reducing review time by 40% and improving accuracy by 30%. Conducted debugging and unit testing enhancing system reliability and security through full software development lifecycle. Reviewed and evaluated over 100 contributors' prompt and model response edits, identifying essential prompts aligned with training objectives. Trained AI models from META, Cohere, Anthropic, and OpenAI using multiple programming languages including Java, C++, Python, HTML, and MySQL.

LLM Technical Assessor | Operations at Scale AI

September 30, 2024 - September 2, 2025

Designed and implemented an LLM-based interview framework using Java, Python, and MySQL. Coordinated with technical and business stakeholders to improve assessment accuracy. Collaborated with HR and technical teams to tailor assessments for over 1,500 hires. Led a team of 13 interviewers providing coaching and delegation. Developed optimized solutions and comprehensive test cases for coding assessments improving overall reliability and model alignment.

Software Developer at Teraki

September 30, 2023 - September 2, 2025

Developed and maintained Audiobook Catalog service in a microservices architecture managing metadata and enhancing advanced search and filters by 50%. Contributed to both backend Java services and frontend UI, improving customer satisfaction by 30%. Wrote over 100 unit tests, performed code reviews, and managed CI/CD pipelines with Git. Worked in Agile environment with daily standups and sprint reviews to sync with team goals and improve delivery cadence.