Double MSc. Physics and CS. Long time Linux kernel hacker and systems developer (mostly embedded). Wide experience in the industry, from Perl scripting to reinforcement learning using TensorFlow.

I have wide experience in developing, designing and managing projects with a variety of technologies. My preferred development languages are Perl, Go and Python; also, I'm proficient in Java, Javascript/AJAX, jQuery, full-stack web development and SQL. Ones of the most effective my skill are: automating of routine tasks; creating some scripts and utilities; creating desktop application; boundary problems: cross-technology, cross-language, reverse engineering, etc. I met with the computer for more than 25 years ago and since then my work is closely related to programming. Most of this time I was working alone, so I implemented the full cycle of software development in the projects I've worked on. I am a fast learner and problem solving oriented programmer. My priorities are quality and client satisfaction.

I have strong expertise in MySQL, SQL Server, MongoDB, PostgreSQL, PHP, Laravel, Vue.js, Node.js, Linux, and ViciDial. With over 20 years of experience, I specialize in designing, developing, and delivering high-performance, scalable solutions, including complex call center systems and custom VoIP integrations.

- UTILIZING AI TECHNOLOGIES FOR THE DEVELOPMENT, TESTING, OPTIMIZATION, AND INTEGRATION OF PRE-EXISTING VOIP SYSTEMS WITH EXTERNAL SERVICES AND PLATFORMS. - I have more than 16 years to work as system administrator, deploy server, maintenance system base on: asterisk, voip, avaya, freeswitch, kamailio, opensip..... - Developed many VOIP solutions, system for customer over the world as: voicemail system, conference systems, IVR systems, calling card system. - Django developer: Develop e-commercial sites, CMS sites, API systems and more - AngularJS developer, one page applications. - etc.

Back-end programming * Expert-level Database Design and Implementation. * Extensive experience in back-end application development, accessing databases for both extraction and update. * Experienced in API development, both as client (e.g., importing data from external vendor API) and server (writing RESTful APIs). General programming * Highly experienced in maintenance of existing legacy code, as well as new development. * Excellent coding and bug-fixing skills in Python, Perl, C, PHP and Pick Basic. * Desktop applications using Python tkinter. * Many years experience in process automation. Databases: MySQL, PostgreSQL, SQLite, Oracle, SQL Server, Access Source control: Git, CVS, SVN, Perforce Specialty: Finding solutions to difficult problems.

🚀 Technology Consultant with 22+ years experience designing SaaS architecture, Zoho CRM automation, scalable web & mobile apps using PHP, Perl, Python, Node.js, ReactJS, Spring Boot, AWS. I am a Technology Consultant, and Full-Stack Developer with 22+ years of experience delivering scalable SaaS platforms, Zoho CRM automation, and web & mobile applications for startups, SMBs, and enterprises worldwide. I specialize in end-to-end project delivery - from presales, requirement analysis, and system architecture to development, deployment, and long-term support. Clients work with me not just to build software, but to solve business problems using the right technology stack. I have successfully delivered 50+ projects across FinTech, Job Portals, Education, IoT, eCommerce, Insurance, OOH Advertising, FoodTech, and Multi-Tenant SaaS platforms, working with remote global clients and distributed teams. Zoho Consultant | Zoho CRM Developer | Zoho Creator Expert | SaaS Developer | Full-Stack Mobile and Web Developer | Python Developer | Node.js Developer | ReactJS Developer | React Native Developer | Flutter Developer | Mobile App Developer | AWS Cloud Architect | Solution Architect | API Integration Expert | Startup Technology Consultant 🔹 Quick Profile Snapshot 💎 22+ Years IT Experience 🏗 50+ Projects Delivered 🌍 Global / Remote Clients 🧠 Tech Consultant & Solution Architect ⚙️ Zoho + Custom SaaS Specialist ✔ Core Expertise 🔹 Zoho Consulting & Automation (High-Demand) Zoho CRM, Zoho Creator, Zoho Flow, Zoho Desk Zoho Sign, Zoho Books, Zoho Forms, Zoho Writer (Merge) Deluge scripting, workflows, approvals, automation REST APIs, Webhooks, third-party integrations End-to-end business process automation 🔹 Full-Stack Web Development Backend: Python, Django, Node.js, Perl, PHP, Java (Spring Boot) Frontend: ReactJS, React Native, HTML, CSS, JavaScript 🔹 Mobile App Development Flutter (Android & iOS) React Native Native Android 🔹 SaaS, Cloud & Architecture Multi-tenant SaaS design AWS, Linux, Redis, RabbitMQ MySQL, MongoDB, PostgreSQL, SQL Server Secure, scalable, cloud-native architecture 🔹 Consulting & Delivery Presales & proposal creation Agile / Scrum project delivery Client communication & stakeholder management Long-term maintenance & scaling ✔ Selected Project Highlights (Real Work, Not Generic) 🔹 FinTech Investment Management Platform Configured and customized Zoho CRM with Contacts, Leads, and custom modules. Implemented workflows, automation, and integrations with Zoho Sign, Zoho Flow, Zoho Forms, Zoho Desk, and Zoho Writer (Merge) to enable a complete investment lifecycle system. 🔹 Blue-Collar Job Portal & Mobile App Built a full-stack job marketplace using Python, Node.js, ReactJS, Flutter, MongoDB, connecting job seekers, agencies, and employers with real-time workflows. 🔹 Halal Guide App Cross-platform food discovery and verification app using ReactJS, Flutter, Node.js, MongoDB, allowing users to search halal-certified restaurants and validate food ingredients. 🔹 Multi-Tenant Estimation SaaS Platform Developed a scalable SaaS product using ReactJS, Nodejs, MongoDB, including tenant onboarding, estimation engine, approvals, invoicing, and reseller management. 🔹 Restaurant Review & Feedback System Web application built with ReactJS, Node.js, MongoDB enabling invoice uploads, menu reviews, and structured customer feedback. 🔹 IoT Data Collection & Analytics Platform Designed backend using Spring Boot + MongoDB to capture, monitor, and analyze real-time device data with dashboards and reporting. 🔹 Motor Insurance Benefit App Built with Node.js, ReactJS, Flutter, MongoDB, tracking driving behavior and recommending personalized insurance benefits. 🔹 LiveOps Call Center SaaS (Infogain) Enhanced SaaS call center platform using Perl/CGI, MySQL, Linux, delivering real-time monitoring dashboards, reporting, and call-flow integrations. 🔹 eCRM & Large-Scale Enterprise Systems Vice-Versa eCRM (UMG UK) – consumer targeting & analytics IndiaMART ecosystem projects – eCommerce, directory portals, payment gateway systems Planyourmedia OOH Platform – media planning, booking, analytics, billboard monitoring ✔ Why Clients Choose Me 🔹 CTO-level thinking, not just coding 🔹 Strong focus on ROI, scalability, and maintainability 🔹 Clear communication and ownership mindset 🔹 Proven experience in complex, long-running systems 🔹 Ideal for startups, agencies, and enterprises 🎯 Ideal Projects Zoho CRM / Creator customization & automation SaaS product development (MVP → Scale) Web & Mobile App Development API integrations & system modernization Solution Architect/ Technology Consultant roles

I am VoIP/VICIDIAL/VICIBOX/Asterisk/FreePBX/GoAutodial/vTiger/3CX developer and solution provider with past 16+ years of rich experience. I have expertise in them, and so i am confident to serve you for the same. I have rich telecom, web and custom software development and support experience. I'm interested in your job & I guarantee doing it in short time. I didn’t ask for an upfront as I'm interested in building long term relationships based on trust because I'm confident with my quality of work.

With over 25 years of hands-on experience in system administration and a profound understanding of GNU/Linux environments, I offer expertise in open source technologies that drive reliable and efficient systems. My proficiency extends to development on various programming languages, enabling me to craft robust solutions tailored to client requirements. Core Competencies: Systems Administration: Proficient in managing all aspects of the Linux operating system, including CentOS, Debian, Ubuntu, and Slackware distributions. Skilled in system optimization, security, and performance tuning. Software Development: Proficient developer with a focus on Perl, Python, PHP, C, C++, SQL, and JavaScript. Well-versed in Object-Oriented Programming (OOP) principles and application development for diverse platforms. Script Development: Adept at developing scripts in Perl, Python, Bash, and Lua for automation, integration, and system enhancement. Strong advocate for leveraging scripting languages for efficient operations. Database Administration: Extensive experience in administering MySQL/MariaDB, PostgreSQL, Oracle, SQLite, and Redis databases. Proficient in database optimization, replication, and backup strategies. Networking Specialist: Deep understanding of TCP/IP and OSI stack layers, with expertise in proxies, HTTP protocol, RADIUS, VPNs, VLAN, SNMP, netflow/ipfix, and BGP. Experienced in designing, implementing, and troubleshooting complex network infrastructures. Monitoring Architecture: Skilled in designing and implementing infrastructure monitoring solutions, including data gathering, processing, and analysis dashboards. Proficient in monitoring various network devices and systems across diverse environments. Web Hosting and Development: Proficient in web server hosting using Apache, Plack, Starman, and Flask, with expertise in HTML5, JavaScript, and REST APIs. Capable of developing dynamic web solutions in Perl, Python, Bash, or C. Professional Approach: I am committed to delivering tailored solutions that align with my clients' needs and exceed their expectations. My creative thinking and positive attitude ensure that challenges are met with innovative solutions, fostering long-term partnerships built on trust and reliability. Conclusion: With a comprehensive skill set and a proven track record of success, I am dedicated to providing exceptional service and driving continuous improvement in every project I undertake. Let's collaborate to transform your vision into reality and achieve unparalleled success.

I've been building websites and software professionally for years. A lot of my work has been custom websites and web applications, and I've also spent a lot of time working with Wordpress. I've built sites from scratch, taken over existing ones, written custom plugins, handled migrations, worked with APIs and databases, and fixed plenty of things that were already broken when I got there. On the Wordpress side, I've worked with custom themes and plugins, Elementor, Gutenberg, WooCommerce, ACF, multisite, forms, hosting, DNS, email delivery, and site migrations. I also do custom application development. I've worked with C#, .NET, Perl, PHP, JavaScript, PostgreSQL, MySQL, SQL Server, Linux, APIs, automation, document processing, authentication, and internal business systems.

I deeply understand technologies, as I was there when they where invented to solve the problems that we where having. In fact I invented some of them myself. I just left my startup, (founder CEO/VP Innovation), and now am looking to return to development which is my true passion. Short list of Experience ● 2023 - 2024: SHM Founder VP Innovation ● 2019 SHM: Founder and CEO of startup offering remote programmers to US companies. ● 2014 Oncam Technical Consultant, Multi-Threading Specialist for a Video Conferencing Startup. ● 5 years participated as CTO or lead Programmer in several minor startups. ● Did a couple of years on Internet with upwork and other platforms (see history) ● At 40 had architected a State-Transition diagrams methodology for Stock-Exchange Processing. ● At 35 Leading an agile programming group for a Major Bank to integrate Electronic Stock Exchanges. Where I architected a publish and subscribe network system (5 years before TIBCO). ● Was CTO of Swiss Startup at 31. ● Built SMALLTALK and PROLOG PC based CASE tool to generate COBOL/CICS dialogs at 28yr ● Designed/Implemented a Meta Data Repository, to generate VAX/VMS code at 25 ● Wrote IBM/CICS emulation environment at 24yr ● Wrote an Database in 360 assembler at the age of 21yr Do you have an interesting problem you need solved? Talk to me see what I can offer you..