CV
Curriculum Vitae of Natnael Bekele Haile.
Contact Information
| Name | Natnael Bekele Haile |
| Professional Title | Fullstack Software Engineer & AI Systems Developer |
| natnaelbekele142@gmail.com | |
| Location | 4kilo, Addis Ababa, |
Professional Summary
Fullstack (backend-heavy) software engineer with extensive experience in building scalable investment management platforms, AI-driven analytics, and LLM fine-tuning/RLHF pipelines. Head of competitive programming education with a proven record of mentoring 500+ engineers, with 80+ landing roles at Google, Amazon, Bloomberg, and top tech companies.
Experience
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2024 - Present London, UK
Fullstack Developer (Remote)
Vula
Engineering end-to-end investment management and portfolio tracking platforms.
- Architected an end-to-end investment management platform featuring automated pre-investment tracking to streamline due diligence and initial vetting processes.
- Implemented AI-driven analytics for post-investment tracking, providing real-time visibility into asset performance and financial outcomes for international portfolios.
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2023 - 2024 California, USA
Python Developer (Remote)
Turing
Trained and benchmarked state-of-the-art Large Language Models.
- Designed and validated multi-domain tasks (Networking, Python, Data Science) to train LLMs via supervised fine-tuning (SFT) and RLHF methodologies.
- Created robust unit testing frameworks to evaluate model-generated code against ideal solutions, ensuring high-fidelity output.
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2023 Addis Ababa, Ethiopia
Teaching Assistant
AddisCoder '23 (Founded by Prof. Jelani Nelson)
Mentored high school students in intensive algorithms and Python programming organized by Prof. Jelani Nelson (UC Berkeley / Harvard).
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2021 - 2023 Addis Ababa, Ethiopia
Head of competitive programming education
Africa to Silicon Valley (A2SV, Backed by Google)
Directed competitive programming squads and coached top engineering students across Ethiopia.
- Led an education squad (consisting of 6 heads of education), teaching 500+ students over two cohorts from AAU (2 classes in 2023, 4 classes in 2024), ASTU (1 class in 2023, 4 classes in 2024) & AASTU (2 classes in 2024).
- Contributed to 80+ students securing internships and new grad offers from top tech companies, including Google, Amazon, Bloomberg, and more.
Education
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2018 - 2023 Addis Ababa, Ethiopia
Bachelor of Science (B.Sc.)
Addis Ababa University
Electrical & Computer Engineering (Computer Stream)
- Data Structures & Algorithms
- Operating Systems
- Object-Oriented Programming
- Distributed Systems
- Database Systems
- Final year project: mBERT-based Hate Speech Classification for Amharic Language
Skills
Awards
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2018 Top 100 Students - National University Entrance Exam
National Educational Assessment and Examinations Agency (NEAEA), Ethiopia
Ranked among the top 100 students nationwide in the 2018 GC Ethiopian University Entrance Examination.
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2022 Passed SWE Technical Interviews
Google & Square
Successfully passed 2022 software engineering internship technical interview loops with both Google and Square.
Projects
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The Geometry of Dormant Defection (Latent Sleeper Agent Linear Probes)
Mechanistic interpretability research and 28-layer probing replication suite investigating layer-wise linear probe dynamics for detecting latent sleeper agents and dormant backdoors in large language models. GitHub Code Research Article Zenodo Preprint
- Layer-Wise Activation Probing: Designed and evaluated linear probes across all 28 transformer layers of Qwen2.5-Coder-1.5B-Instruct to trace where deceptive policies linearly separate from aligned representations.
- Mid-Layer Concentration Discovery: Discovered that peak linear separability concentrates in mid-layer representations, formulating trigger-agnostic defensive monitors that catch backdoors without inspecting outputs.
- Tech Stack: Python, PyTorch, Hugging Face Transformers, Linear Probes, Mechanistic Interpretability, Qwen2.5-Coder.
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Amharic Hate Speech Detection
Deep learning NLP research developed as B.Sc. Capstone at Addis Ababa University, utilizing fine-tuned multilingual BERT (mBERT) to detect online hate speech and abusive language in low-resource Ethiopic NLP. Hugging Face Model GitHub Code Jupyter Notebook
- Research & Model Weights: Fine-tuned multilingual BERT (mBERT) representations capturing Amharic morphology; published trained weights and tokenizers on Hugging Face Model Hub.
- Evaluation Pipeline: Established robust evaluation benchmarks for classifying hate, offensive, and neutral content on low-resource social discourse datasets.
- Tech Stack: Python, PyTorch, Hugging Face Transformers, Datasets, mBERT, Jupyter/Colab.
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AfroChat
AI-powered multi-model enterprise chat platform bringing cutting-edge LLMs together with custom workspace solutions, streaming architectures, and multi-tenant security. Live App
- Distributed Backend: Engineered real-time streaming chat completions and workspace orchestration using WebSockets, Redis pub/sub, and RabbitMQ message queues.
- Production Cloud Infra: Containerized services with Docker and Kubernetes, backed by MongoDB clusters and AWS S3/SES for assets and automated transactional mail.
- Tech Stack: Express, Node.js, MongoDB, OpenAI API, AWS S3/SES, Redis, WebSockets, Docker, Kubernetes, RabbitMQ.
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Adot
Comprehensive maternal healthcare platform supporting pregnant women through personalized tracking, expert doctor consultations, and predictive AI health monitoring (consulted by MIT alumnus Adis Ojeda). Live Platform
- Fullstack & Mobile Ecosystem: Architected web client and companion mobile interface delivering clinical appointment booking and personalized trimester milestone tracking.
- Predictive Health Modeling: Implemented predictive analytics for prenatal risk factors with secure cloud storage, HIPAA-conscious design, and real-time alerts.
- Tech Stack: Next.js, Node.js, MongoDB, Flutter, Django, TypeScript, Tailwind CSS, GCP, Firebase, Docker.
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Cursor Spend Tracker
Telemetry and cost analytics SaaS platform tracking Claude token spend and BYOK charges with automated Vercel cron background data synchronization. Live App GitHub Code
- Telemetry & Cost Modeling: Automated cost breakdown across Claude models (Sonnet, Opus, Haiku), cached input token ratios, and live burn-rate analytics.
- Serverless Architecture: Built with Next.js 16 App Router, Prisma ORM, Neon Serverless Postgres, and automated Vercel Cron jobs.
- Tech Stack: Next.js 16, TypeScript, Tailwind CSS, Prisma, Neon Postgres, Recharts, Vercel.
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promptKit
Automated prompt engineering, synthetic test-case generation, and LLM evaluation benchmarking toolkit for generative AI applications. GitHub Code
- Systematic Benchmarking: Generates diverse edge-case test distributions and benchmarks prompt candidate performance using automated LLM-as-a-judge scoring.
- Interactive Dashboard: Streamlit-based interactive exploration suite for comparing model outputs, latency, and token efficiency.
- Tech Stack: Python, Streamlit, OpenAI API, Prompt Tuning, LLM Evaluation.
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VitalAI
Django-based predictive healthcare REST API delivering personalized health insights and anomaly alerts from Apple Health telemetry data. GitHub Code
- Biometric Ingestion Pipeline: Ingests, parses, and normalizes Apple HealthKit metrics (resting heart rate, active energy, sleep cycles) into standardized timeseries.
- Predictive Health Modeling: Machine learning algorithms identifying health metric anomalies and providing actionable lifestyle recommendations.
- Tech Stack: Python, Django REST Framework, Docker, Apple HealthKit API, NumPy, Pandas.
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Redash Chatbot Add-on
Conversational Business Intelligence extension for Redash, enabling natural language questions, automated SQL query generation, and live chart visualization. GitHub Code
- Text-to-SQL Engine: Translates complex plain-text analytical questions into validated SQL queries against underlying data warehouses.
- Redash Integration: Integrates directly with Redash API to execute generated queries and render interactive visualizations dynamically.
- Tech Stack: Python, LangChain, Redash API, LLM text-to-SQL, PostgreSQL.
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RateEat
Community food discovery and restaurant review platform featuring personalized recommendations, interactive menu browsing, and verified user ratings. Live App
- Recommendation Engine: Implemented smart collaborative filtering for dish discovery tailored to user taste preferences and dietary habits.
- Fullstack Application: Responsive Next.js/React frontend with Tailwind CSS and an Express/MongoDB backend with Firebase real-time notifications.
- Tech Stack: React, Next.js, Tailwind CSS, Node.js, Express, MongoDB, Redux, Firebase.
Preprints
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2026 The Geometry of Dormant Defection: Layer-Wise Dynamics and Defensive Design of Linear Probes for Latent Sleeper Agents
Zenodo publication (DOI: 10.5281/zenodo.23089057)
Empirical investigation into the layer-wise dynamics of linear probes across four distinct backdoor archetypes, demonstrating that peak linear separability concentrates in mid-layer representations.
References
- Alex Goff
Co-founder and CTO of Vula.
- Nic Rawhani
Co-founder and CEO of Vula.
- Prof. Jelani Nelson
Professor and Department Chair, EECS at UC Berkeley; Founder of AddisCoder.
- Adis Ojeda
MIT Alumni; Founder & CEO of Theseus Group; Consulted Adot.
- Dr. Fitsum Andarge
Associate Professor and Dean of ECSE at Addis Ababa University; Former Academic Professor.
- Emre Varol
CEO of A2SV (Africa to Silicon Valley).