Hire the Best Debuggers

I fix bugs fast and build things that work. Backend broken? Database slow? App crashing? Server down? Send me the details — I'll diagnose it and give you a clear plan within hours. What I deliver: → Bug Fixing — fast diagnosis, fast turnaround, across any stack I know → Laravel & PHP — APIs, performance optimization, N+1 fixes, full backend systems → Python & Django — automation, backend services, scripting, data processing → Android Apps — Kotlin, Java, Firebase, Room DB, Play Store publishing → MySQL & Databases — query optimization, ClickHouse, schema design, migration → DevOps & Linux — server setup, hardening, Docker, Ansible, Nginx, CI/CD 9+ years building and maintaining production systems at scale. RHCE, RHCA, CCNA certified. I've managed infrastructure serving 50,000+ concurrent users and built data pipelines processing millions of records

TLDR: Check reviews ! :) portfolio: bilalbelli.eu 👈 I’m an experienced Software Engineer (with diploma) and Developer (not a vibe coder ! i understand and i can do everything) specializing in Python, Java, Javascript, Typescript, and modern Web technologies (Angular, Spring Boot, Node.js, Flask, Wordpress, Bootstrap, Next.js, Nuxt.js, Electron.js), and I also provide tutoring and mentoring in programming and computer science topics. I hold a strong Computer Science and Systems Engineering background, with solid experience in software development, backend & frontend engineering, system design, machine learning (AI, ML, DL, Agents) and applied problem-solving. I enjoy tackling non-standard and real-world problems, covering application design, algorithmic thinking, system architecture, and production-ready implementations, from initial analysis to clean, documented, and maintainable code. I regularly work on full-stack engineering problems, including: - Coding, - Documentation, - Manual Creation, - Scientific & Technical Writing, - Tutoring, I have hands-on experience with a wide range of technologies and tools, including Python, Java, C, JavaScript, TypeScript, HTML, CSS, SQL, and frameworks such as Spring Boot, Node.js, Flask, Electron, and Angular. I also work with relational databases (PostgreSQL, MySQL, SQL Server), and modern DevOps & infrastructure tools like Git, Docker, Jenkins, Ansible, Jira, as well as Linux environments and networking solutions (Nginx, HAProxy, DNS, virtualization). I’m comfortable learning and adapting to new technologies quickly, and my broad technical foundation allows me to switch tools and frameworks efficiently to best fit project requirements. Why hiring me ? because i provide a high quality job and get the job done real quick !

I am an ACM-ICPC World Finalist and software engineer. I have been developing backend and DevOps solutions using C++, Java, and Python since 2016. I have experience in multiple domains that include fintech, agrotech, health tech, IoT, and Saas. I have been working as a remote developer with globally distributed teams since 2019. I am a quick learner, good with communication, proactive and punctual human being. Nothing excites more me than a challenge that is necessary but difficult to solve. I am also a competitive programmer and expert in data structures and algorithms. I have a decent understanding of UNIX systems especially how different types of data structures are blended to solve complex problems of operating systems. I am a team player and can work as solo as well. I never compromise the quality of my work doesn't matter how the pressure is. And, I believe in requirement analysis as the most crucial part of engagement.

I can't say for sure but I have the impression that very few people (if any) in the IT field have read the "Message to Garcia" by Elbert Hubbard. I have read it and I dare to consider myself one of the people, who are able to "bring the message". There always will be someone who is more creative, knows more or works faster than me. I am aware of that and I accept it. Still, I am quite confident of being a better prepared professional than the average IT guy. I have 20 years of experience in programming, database modelling, system design and architecture, business processes analyses and automation, basic managerial accounting, Linux and network administration, Asterisk (FreePBX) configuration. I have successfully solved various business-related software and hardware challenges. Being able to combine both low-level and high-level allows me to work on wide range of tasks. I have reverse engineered and fully decompiled about a dozen Delphi components and desktop applications. Assembler was my 2nd language (after BASIC) and my first significant application was a player for tracker music entirely written in Assembler - with bass/treble digital filters. I like digging deeper and understanding the root cause. I am quite good at debugging and troubleshooting - and this is not an empty claim. Some of my achievements: - developed 2 full-blown ERPs (for Walltopia and Composite-X) - developed 2 accounting / warehousing applications with OLAP reporting and hierarchical multi-dimensional accounts - developed Windows service daemon for logging Skype chats to a REST API in real-time - ported one large desktop application (Interactive Delphi Reconstructor) from Borland CBuilder to Delphi - implemented a company-wide real-time backup solution using Yadis or Bvckup, Samba and NappIT on OpenIndiana - developed Linux daemon for controlling large LED strips based on WS2811 (and organized into X/Y matrix) through TCP/UDP socket - developed combined CDR reporting, matching information from the local Asterisk PBX with billing information from the VoIP providers - implemented Linux daemon for reading SMDR/CDR data from Panasonic PBX TDA-200 and storing in MySQL with reporting capabilities - developed custom reporting module for a 3rd party security access control system and integrated it with the in-house ERP system I choose my clients as carefully as you choose your freelancers. I value honesty, respect, good communication, good sense of humor, intelligence, modesty, kindness, generosity. I prefer to develop from scratch custom business solutions automating the workflow of small businesses. My previous experience with the 2 ERP systems I already developed (and which are used 24/7 by customers and employees) is of enormous benefit. I feel truly happy when I am able to help a client by removing the burden and simplifying the workflow. What can you expect from me: - educating and explaining the things which are too technical and unfamiliar to you - asking good questions - providing meaningful advises and recommendations - not trying to suck additional money by finding extra work of low business value - understanding your real business needs and goals - keeping you from making worthless or unwise expenses - excellent responsiveness - taking precautions against damaging your data - really listening to you and your problems/pain points - acknowledging my faults - enjoying good jokes - not quietly disappearing after faced with some tough challenge - honestly admitting when I do not know something or not being qualified enough - not over-complicating the solution - being available for support and further assistance after the final deployment - solving difficult problems - positive skepticism - breadth of knowledge - ability to “finish” - introspective, self-motivated to constantly improve - perseverance, scrappy in the face of setbacks, doesn’t “get blocked” - systems design ability - empathy for users - taking pains to write readable and maintainable code - methodical and analytical: can diagnose the most mysterious bugs or find the source of performance bottlenecks

Hi. I’m a professional web-developer. I have more than 8 years of web development experience. My occupation is Computer Systems Engineering and Technologies. Web technology learning had become my hobby and it transformed into a job with a time passed. Shortly about my skills: + frontend development: HTML (& preprocessors), CSS (& preprocessors), JS (native, jquery, es6, react), task runners (Gulp), basic SEO skills; + backend development: strong PHP, MySQL, Yii2, Laravel knowledge; + strong WordPress knowledge, working with a lot of plugins, writing themes from scratch; + have experience with Rest API development; + use Git (github, gitlab, bitbucket) and have experience of team development; + strong knowledge of debuggers and console; + have good skills in Linux server administration. + setup Google ADS. I have certificate and status Google Partner. I'd be glad to help you with your tasks. Kind regadrs, Artem

Struggling with slow APIs, backend issues, or frontend integration problems? I help businesses fix, optimize, and scale ASP.NET Core + Angular applications so they run reliably in production and handle real-world workloads without breaking. Instead of just building features, I focus on performance, stability, and clean architecture — the things that actually matter once your application goes live. Recent Work & Experience: - Built full-stack systems (Angular + ASP.NET Core + SQL Server) with dashboards, role-based access, and complex workflows - Optimized REST APIs to significantly improve response time and system performance - Worked on enterprise systems in insurance, POS, education, and operations (confidential projects) - Delivered freelance projects with 5⭐ feedback for reliability, communication, and problem-solving What I can help you with: - Fix and optimize slow or broken ASP.NET Core APIs - Build scalable backend systems with clean architecture - Integrate Angular/React frontends with stable backend APIs - Debug critical production issues quickly and efficiently - Improve SQL Server performance and query optimization - Upgrade or refactor legacy .NET applications Why clients work with me: - I focus on solving real problems, not just writing code - I take ownership from problem → solution → delivery - Clean, maintainable, and scalable code (not quick hacks) - Clear communication and reliable execution Tech Stack: ASP.NET Core, Angular, SQL Server, Entity Framework Core, REST APIs, Clean Architecture, MediatR I can adjust my working hours to overlap with PST for smooth collaboration. Let’s discuss your problem first — and find the most efficient way to solve it.