Krstoffr

Sr. Full Stack | Blockchain | Embedded System | AI Engineer

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Overview

Looking for any work (8 hours/day)

at $16.61/hour ($3,200.00/month)

Bachelor's degree

Last Active

June 25th, 2026 (today)

Member Since

February 21st, 2026

Profile Description

Hello, there! I’m a full stack & AI engineer with over 9 years of experience building all kinds of digital products—from websites and mobile apps to blockchain platforms, embedded systems, and AI-powered solutions.

I’ve worn a lot of hats over the years, but the common thread has always been solving real problems with smart, reliable tech. Whether you’re looking to launch something new or need help improving what you’ve already built, I’m here to jump in and make it work.

-Web & Mobile Apps:
Clean, responsive designs and solid backend logic. I work with tools like React, Vue, Node.js, Django, Flutter, and more to build apps people actually enjoy using.

-Embedded Systems & IoT:
I build smart, connected hardware using platforms like Arduino, ESP32, and Raspberry Pi. From prototyping to production-ready firmware, I work with C/C++, MicroPython, and platform-specific SDKs to control sensors, motors, displays, and more. I also integrate these systems with web and cloud services—often adding AI for tasks like real-time data analysis, voice interaction, or image recognition at the edge.

-AI & Machine Learning:
I integrate tools like GPT-4, Whisper (speech-to-text), and DALL·E into web and mobile platforms—automating workflows, building chatbots, content generators, or even custom AI copilots for your users or team. I also work with Python-based ML frameworks like TensorFlow and PyTorch for custom models and training.

-Blockchain & Smart Contracts:
I’ve developed and audited smart contracts (mainly Solidity) and built dApps that connect seamlessly with Ethereum, Solana, and BNB networks.

Let’s bring your vision to life with clean architecture, scalable code, and tech that lasts. I’m ready to contribute as your long-term tech partner or on-demand expert.

Top Skills

Experience: 5 - 10 years

Senior Full Stack Engineer with 8+ years of experience building scalable, high-performance web and mobile applications. Expert in Python (Flask, Django, FastAPI), PHP (Laravel, Symfony), and JavaScript/TypeScript (React, React Native, Node.js). Proficient in cloud-native architecture with AWS, GCP, and containerization using Docker/Kubernetes. Experienced in building RESTful/GraphQL APIs, real-time applications, and microservices. Skilled in Agile methodologies and delivering end-to-end solutions with a focus on reliability, performance, and user experience.

Experience: 5 - 10 years

Results-driven Blockchain Developer with 8 years of experience designing, developing, and deploying secure, scalable decentralized applications and blockchain-based solutions. Strong expertise in smart contract development, Web3 integration, DeFi platforms, NFT marketplaces, token standards, and distributed ledger technologies. Skilled in building solutions across Ethereum, Polygon, BNB Chain, Solana, Hyperledger, and other blockchain ecosystems, with hands-on experience in Solidity, Rust, JavaScript/TypeScript, Node.js, React, Web3.js, Ethers.js, and smart contract testing frameworks. Experienced in the full development lifecycle, including architecture design, smart contract implementation, wallet integration, backend API development, security optimization, gas optimization, and deployment to mainnet/testnet environments. Proven ability to collaborate with cross-functional teams, translate business requirements into blockchain solutions, and deliver production-ready applications with a strong focus on security, performance, scalability, and user experience. Passionate about emerging Web3 technologies and experienced in developing solutions for DeFi, DAO governance, crypto payments, staking systems, NFT platforms, asset tokenization, and enterprise blockchain applications. A reliable and adaptable engineer with strong problem-solving skills and a track record of delivering high-quality blockchain products in fast-paced environments.

Experience: 5 - 10 years

Senior Full Stack & Automation Engineer with 8+ years of experience designing and building scalable, high-performance platforms across web, cloud, and automation ecosystems. Expert in PHP (Laravel, Symfony), Node.js/NestJS, React/Next.js, Vue, and Angular, with deep experience in microservices, event-driven systems, and cloud infrastructure (AWS, Azure, GCP). Highly specialized in automation-first and AI-assisted development, leveraging Zapier.com, Make.com, n8n, Replit, Lovable, and modern AI tools (GitHub Copilot, ChatGPT, Claude, Cursor) to rapidly build workflows, internal tools, integrations, and production-ready systems. Proven ability to reduce development time, eliminate manual processes, and deliver reliable automation pipelines used by thousands of global users. Strong background in Agile/Scrum, enterprise SaaS, CI/CD, Linux system administration, and API-first design.

Other Skills

Experience: 5 - 10 years

Senior Python Engineer with 8+ years of experience building scalable, high-performance backend systems, microservices, and data-driven applications using Python, Django, Flask, FastAPI, and modern JavaScript frameworks. Strong experience in API development, web automation, data extraction, ETL pipelines, Selenium/BeautifulSoup scraping, and cloud infrastructure across AWS, Azure, and GCP. Experienced in building secure, maintainable, production-grade systems using Docker, Kubernetes, Terraform, and CI/CD pipelines. Skilled in Agile/Scrum workflows and cross-functional collaboration.

Basic Information

Age
30
Gender
Male
Website
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Address
Pagadian, Zamboanga Del Sur
Tests Taken
IQ
Score:  116
DISC
Dominance: 23
Influence: 12
Steadiness: 29
Compliance: 36
English
C2(Advanced/Mastery)
Government ID
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