Product Engineer

Milos Arsic

Senior Software Engineer with 8+ years of experience specializing in JavaScript and TypeScript development. Core expertise in client-server architectures and runtime environments, building sophisticated applications, extensions, bots, and AI agents. Currently focused on LLM integration, AI technology, and blockchain development.

As a Technical Leader, I transform SaaS products and blockchain platforms through strategic technical leadership. Proven track record of delivering scalable solutions with exceptional user experience and measurable business impact.

Blockchain Expertise

Architect and integrator of multi-chain solutions across EVM and Solana ecosystems. Specialized in:

Cross-chain bridge implementation
Smart contract development
DeFi platform architecture
DAO governance systems
Web3 technologies
Token economics design
Blockchain security

Leadership Approach

Hands-on technical leader emphasizing:

Code-first leadership
Knowledge sharing
High technical standards
Collaborative excellence
Continuous improvement

Core Technical Strengths

Full-Stack Development: Complex TypeScript/JavaScript applications
AI Integration: LLM solutions and AI-powered systems
Automation: Custom extensions, bots, and tools
Backend: Robust server-side architectures
Blockchain: dApps on EVM and Solana
Web3: Cross-chain solutions and smart contract systems
DeFi: Protocol integration and wallet systems
Architecture: Token economics and DeFi mechanisms

Current Focus

Expanding expertise in:

AI technologies
Cross-chain interoperability
DeFi innovations
Scalable Web3 architectures
Product scaling
User engagement optimization

Education

$ cat Faculty of Organizational Sciences

> Bachelor's Degree

> Computer Science

2013 - 2019

Skills & Technologies

Frontend

Astro React.js Vite Next.js TypeScript JavaScript (ES6+) Tailwind CSS Redux/Zustand WebSockets GraphQL

Backend

Node.js Express.js NestJS REST APIs WebSocket Servers Microservices

Cloud & DevOps

Cloudflare AWS (EC2, S3, Lambda) Docker CI/CD GitHub Actions

Databases

PostgreSQL MongoDB Redis

AI & ML

AI APIs LLM Integration Vector Databases AI Agents Eliza

Blockchain

Solana EVM

Tools & Practices

Git System Design API Design Agile/Scrum Technical Leadership

Performance & Security

Web Security Performance Optimization OAuth/JWT

Business

Project Management Technical Writing SEO Growth Strategy

Professional Journey

Leading user acquisition initiatives at Pdftools, a Swiss sibling company of SmallPdf. Developing and optimizing web applications using React, TypeScript, and Next.js. Implementing SEO strategies and analytics tracking to improve conversion rates and user engagement across multiple markets. Created a customer portal with self-serve capabilities where users can keep track of their licenses, consumption, deals, and utilities.

Co-founded and architected Looty.fi, an innovative blockchain integration across multiple EVM networks. Implemented cross-chain solutions by integrating Layer 2 networks including Avalanche and BSC, designing efficient bridge mechanisms for seamless asset transfers. Integrated smart contracts for the NFT-based reward system, ensuring secure token economics and cross-chain compatibility. Built comprehensive Web3 integration layer using ethers.js and Web3.js, connecting React frontend with on-chain functionality.

Led blockchain integration for a comprehensive DAO platform on Solana, implementing complex treasury management systems and governance protocols. Implemented wallet integrations including Phantom and Solflare, while ensuring secure transaction handling and signature verification as well as KYC/AML compliance.

Designed and developed a cutting-edge B2B customer portal with a multi-tenant architecture tailored for mobile operators, leveraging Vue.js for a dynamic front-end and PHP for a robust back-end. Focused on integrating key microservices, including Charging Specification, Services, Products, Offers, User Management, Analytics, and Reporting systems, to ensure seamless interoperability and scalability. Directed an innovative R&D initiative to develop an immersive virtual store using Unreal Engine, revolutionizing product showcases and driving enhanced customer engagement, ultimately elevating sales presentations and client satisfaction

Led cross-functional teams at a data-driven insights company specializing in the automotive and retail sectors across the United States. Facilitated seamless collaboration between engineering, product, and QA teams while effectively managing stakeholder expectations. Introduced and implemented agile methodologies, driving faster project delivery and enhanced team efficiency. Oversaw the successful delivery of multiple high-impact projects, directly influencing the experiences of millions of users.