Martin Kunev
Verified Expert in Engineering
AI Engineer and Software Developer
Paris, France
Toptal member since December 19, 2016
Martin is always ready to learn new things. He has a passion for machine learning and AI in general and has extensive experience as a back-end developer. He has a good background in data structures, algorithms, and mathematics. Martin loves getting into the details of how things work under the hood.
Portfolio
Experience
- C - 20 years
- Linux - 19 years
- Algorithms - 15 years
- Python - 15 years
- C++ - 10 years
- MySQL - 10 years
- Data Structures - 7 years
- Networks - 6 years
Preferred Environment
Shell, Git, Vim Text Editor, Unix, Jupyter Notebook
The most amazing...
...project I've worked on is developing the back-end of a scalable, distributed, web-based platform for accessing, transferring, and sharing data.
Work Experience
AI Engineer
Freelance
- Developed a computer vision system for extracting information from images, based on VLMs and OpenCV.
- Developed a system for evaluating the performance of various large language models on data extraction from images and documents.
- Integrated LLMs into a model-agnostic pipeline using LiteLLM, LangChain, and LangGraph.
AI Engineer | Database Architect
Macrometa Corporation
- Built a click prediction ML model via supervised learning on website visit data.
- Developed a RAG-based engine to generate customized product recommendations from website data.
- Created applications on top of LLMs via prompt engineering and custom GPTs.
- Extended the core database with support for semantic search queries and vector operations.
- Extended ArangoDB for geo-distribution, implementing conflict-free replicated data types and optimizing internals for performance.
- Developed Python applications for benchmarking, self-repair, and API testing.
Developer
Media Digital
- Converted a cryptocurrency application to a native Android library.
- Implemented an Android application that interfaces a native library.
- Created patches and build scripts to automate building tasks on multiple platforms.
Developer
Codex
- Implemented a service for processing financial data feeds from NYSE and NASDAQ as part of a service-based application.
- Optimized memory management with shared memory and pools.
- Integrated the embeddable database eXtremeDB in different operation modes.
- Designed a deployment system with Docker.
- Implemented a dynamic configuration that is updated using Cronos.
- Wrote Python scripts for OATS report generation and administration.
Senior Software Developer
Prime Holding
- Detected the foreground in an image, based on information about the location of the object in the image.
- Segmented an image of a human silhouette into body parts and used it to detect body features.
- Tested computer vision with OpenCV under different lighting and geometrical conditions.
Co-founder | Full-stack Developer | Director
WebConnect
- Developed an AJAX web-based panel for Xen virtualization and software that manages virtual servers.
- Created a server that collects and processes virtual server load statistics, stores them in a database and exports SVG graphics.
- Built a VNC proxy server, operating with WebSockets over HTTP and HTTPS.
- Integrated payment systems. Developed control panels and other components of the site: WebConnect.bg.
- Administered to production servers with Apache, Lighttpd, PHP, MySQL, and Django; migrated clients.
- Determined the virtual machine and hosting plans.
- Initiated online advertisement campaigns and provided client support.
Senior Back-end Developer
SevOne
- Improved the NetFlow reporting performance by an order of magnitude and reducing NetFlow storage space requirements several times.
- Developed a scalable distributed threshold-based alerting system for NetFlow.
- Used profiling tools to detect bottlenecks, improve speed, and minimize memory usage.
- Wrote unit and integration tests.
Back-end Developer
Schetologica
- Developed the back-end of an accounting web application using NoSQL database and the REST interface.
- Implemented an automatic generator of financial statements.
Back-end Developer
Filement
- Designed and implemented a scalable distributed system which provides unified access to data stored on different types of devices and cloud services.
- Ensured the privacy of users by developing a multi-threaded HTTP server from scratch for multiple platforms (Linux, macOS X, Android, routers, and more). Dealt with portability concerns while porting the server.
- Provided high-speed secure connections by developing a transparent, event-based, and concurrent HTTP proxy server.
- Constructed an event-based, concurrent server that: provides information about connectivity to clients and manages other servers; provides automated version upgrades to end-user servers; and delivers events to subscribers via HTTP.
- Deployed and administered with automated tools written in Python, Perl, and Bash.
- Created installation packages in Apple Disk Image, Tar, Debian, RPM, and APK formats.
Full-stack Web Developer
Freelance Work
- Designed and developed websites.
- Optimized sites for search engines.
Teaching Assistant
Sofia University
- Taught two courses called "Introduction to Programming" and "Functional Programming."
Full-stack Web Developer
Ediso
- Developed websites for clients.
Experience
WebConnect
Filement
Jogging Web Application
Technologies used: Python, JavaScript, Flask, AngularJS, cURL, PostgreSQL.
Education
Master's Degree in Computer Science
École Normale Superieure (ENS) | Paris Cité University - Paris, France
Bachelor's Degree in Computer Science
Sofia University - Sofia, Bulgaria
Certifications
Machine Learning
Stanford University and DeepLearning.AI | via Coursera
Skills
Libraries/APIs
OpenCV, PyTorch, API Development, REST APIs, Pandas, Mustache, AES, POSIX, NumPy, Protobuf, Node.js, Scikit-learn, TensorFlow, SciPy
Tools
Git, GNU Debugger (GDB), Pytest, Claude, Vim Text Editor, Shell, SHA-2, Android NDK, Subversion (SVN), Valgrind, Jupyter, ChatGPT
Languages
Python, C, HTML, C++, JavaScript, Perl, SQL, Scheme, PHP, Java, TypeScript
Platforms
Linux, Unix, Xen, FreeBSD, Linux RHEL/CentOS, Docker, Jupyter Notebook, Amazon Web Services (AWS), Kubernetes
Paradigms
REST, Code Refactoring, Automation, Unit Testing, Refactoring, Testing, Test-driven Development (TDD), Agile Software Development, Compiler Design, Database Development, Real-time Systems
Storage
MySQL, PostgreSQL, Graph Databases, NoSQL, Data Pipelines, Redis, Memcached, JSON, MongoDB, SQLite, ArangoDB, Amazon DynamoDB
Frameworks
Boost, Google Mock (GMock), Flask, AngularJS, Web.py, LangGraph
Industry Expertise
Teaching
Other
Algorithms, APIs, Back-end, API Integration, Prompt Engineering, Networking, Data Structures, Open Source, Ajax, Networks, System Programming, Gentoo, GNU, Unix Shell Scripting, HTTP, Artificial Intelligence (AI), Machine Learning, Distributed Systems, Large Language Models (LLMs), Multithreading, Back-end Development, Retrieval-augmented Generation (RAG), Web Scraping, CSV, Code Review, Scalability, Natural Language Processing (NLP), Deep Learning, Open-source LLMs, Random Forests, K-means Clustering, Logistic Regression, Decision Trees, Linear Regression, RESTFul APIs, Deep Neural Networks (DNNs), Combinatorial Optimization, Data Modeling, RAG Systems, Linux Servers, Mathematical Modeling, API Design, Error Handling, Remote Work, Debugging, Data Processing, Data Science, AI Programming, Lightning Memory-Mapped Database (LMDB), Transport Layer Security (TLS), Cairo, UDP, Porting, WebSockets, Optimization, Quantum Computing, Computer-Assisted Proofs, CRDT, Architecture, Cryptography, Deployment, FTP, Computer Vision, OpenAI, FastAPI, Data Visualization, LangChain, Model Evaluation, Vector Databases, Payment APIs, Payments, Llama 3, Operations Research, PDF, Document Processing, LLM Integration, Pgvector, Agentic RAG Systems, Transformers
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