Hi, I'm Valeri 👋

I architect solutions, optimize performance, and turn ideas into reality. Innovation is my baseline, efficiency is my standard.

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About

I specialize in designing and scaling high-performance software solutions, with expertise in full-stack development, distributed systems, and real-time data processing.

Throughout my career, I have led development teams, architected complex backend infrastructures, and optimized high-load applications to ensure maximum efficiency and scalability. My experience spans multiple industries, including iGaming, where I’ve worked on SAS protocol integrations, jackpot systems, and casino game development, as well as mobility, fintech, and SaaS platforms.

I have a strong focus on system optimization and security ensuring robust and secure software solutions. Additionally, I am deeply involved in designing scalable APIs, integrating third-party services, and implementing advanced algorithms for geolocation and fraud detection.

Now, I am dedicated to building and growing SaaS products, leveraging my expertise in high-performance architectures and cutting-edge technologies to create innovative and impactful solutions.

Work Experience

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Pateplay

Aug 2023 - Jan 2025
Senior Software Developer

At Pateplay, I was a key contributor to the development of core systems and applications within the VLT ecosystem.

I developed multiple games and added essential features to the slot core base, slot UI, and jackpot libs, consistently driving innovation and improving overall performance. My work included optimizing rendering for high-resolution displays, implementing industry-standard protocols like SAS for secure communication, and building advanced systems for machine authentication and configuration in manufacturing environments.

Additionally, I contributed to tools that streamlined hardware provisioning and deployment, setting new operational benchmarks.

While I made significant contributions that pushed the limits of what was possible in the gaming industry, I realized my expertise and ambitions had outgrown the scope of what Pateplay could offer. With a proven track record of delivering impactful results and solving the toughest problems, I’m now seeking new challenges where I can make an even greater impact.

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LevIns Group

Sep 2022 - Aug 2023
CTO

Taxi S Express is a well-established local taxi company based in Sofia, Bulgaria, with a rich history dating back to its establishment in 1991.

Strategically Planned and Developed a Comprehensive Infrastructure Empowering Seamless Business Control and Management in the Taxi Industry.

Developed Web and Mobile Applications for Drivers, Riders, Admins, and Dispatchers, utilizing the latest technologies. Engineered an Innovative Dispatch Algorithm Incorporating Multiple Driver Locations, Fleet Zones, and Pricing Parameters to Optimize Operational Efficiency and Customer Satisfaction.

Successfully Integrated VoIP over WebSocket (VoIP over WS) using jsSIP, enabling seamless communication and real-time voice transmission. Implemented a Highly Accurate Address Lookup API with 1-meter Precision, Ensuring 100% Client Satisfaction for Pickup Location Accuracy.

Conducted Productive Sessions with Taxi Drivers, Actively Listening to and Addressing Their Challenges, Resulting in Effective Problem-solving Solutions Implemented within the App.

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Community Share

Oct 2020 - Aug 2023
Senior FullStack Developer

Community Share is a location-based platform that enables users to borrow and share items within their community. Initially popular in the United States, the platform is now expanding its reach globally, facilitating connections and sharing beyond borders.

Responsible for Planning and Developing API-s, Data, and Server Processes and Defining the Company's Technological Roadmap.

Designing and Implementing Advanced Algorithms leveraging GeoHash for Enhanced Geolocation Precision, as well as Fraud and Theft Detection Capabilities.

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Fraser

Sep 2020 - Jan 2022
Senior Full-Stack Developer & Team Lead

The world’s leading yacht company.

Fraser spacializes in luxuty yachts for sale, unforgettable superyacht charters, yacht construnctio & yacht management Architecting and Spearheading the Development of Internal Flyer Management System Seamlessly Integrated with Microsoft CRM (Dynamic 365).

Successfully Managing and Leading a Team, including Task Distribution and Sprint Planning, to Foster Productivity and Collaboration.

Enhancing Business Processes through Technical Expertise and Client Recommendations, while leveraging Data Analysis to Drive Optimization and Improvements.

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Freelance

Feb 2018 - Present
Full Stack Developer

Engineered Campaign Games Software, meticulously designed to cater to the distinct needs of prominent brands including Coca-Cola, Somersby, Henkel, and FuzeTea.

Established direct communication with clients, understanding of their visions. Conducted in-depth analyses of various possibilities and intricacies, allowing for the identification of optimal solutions.

Our collaborative approach ensured a seamless integration of client ideas, resulting in the delivery of customized software that surpassed expectations.

Skills

TypeScript
Node.js
Express
SQLite
Electron
Pixi.JS
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React
Redux
Socket.io
Docker
Networking and Protocols
System Design
Security
Contact

Get in Touch

Want to chat? Just shoot me a dm with a direct question on LinkedIn and I'll respond whenever I can—or not.