I build cloud infrastructure that scales, blockchain tools that perform, and automation systems that eliminate manual work. Based in Czech Republic, working globally.
What I bring to the table:
- Production-grade AWS infrastructure managed with Terraform
- Blockchain development across TON, Solana, and Ethereum ecosystems
- Business automation that saves hundreds of hours per month
- A systematic, ship-fast approach — I solve problems, not create meetings
📧 Contact: paseka10jaroslav@gmail.com
🔗 Upwork: [2132675c45494c94]
💼 Company: JL Systematic s.r.o.
Production-ready infrastructure-as-code for scalable cloud deployments
- Designed and deployed multi-environment AWS infrastructure (dev/staging/prod) using Terraform modules
- VPC architecture with public/private subnets, NAT gateways, security groups
- ECS Fargate container orchestration with auto-scaling policies
- Lambda serverless functions for event-driven processing
- RDS database provisioning with automated backups and failover
- IAM policies and roles following least-privilege principle
- State management via S3 + DynamoDB locking
Tech: Terraform, AWS (VPC, ECS, Lambda, RDS, S3, CloudFront, Route53, IAM), HCL
Automated build, test, and deployment pipelines
- GitHub Actions workflows for automated testing, building, and deploying
- Docker containerization — multi-stage builds optimized for production
- Infrastructure deployment pipelines with Terraform plan/apply automation
- Automated security scanning and dependency checks
- Blue-green and rolling deployment strategies
Tech: GitHub Actions, Docker, Docker Compose, Terraform Cloud, AWS ECR/ECS
Custom automation scripts for cloud resource management
- Python-based automation for AWS resource provisioning and management
- Batch operations for EC2, S3, and Lambda management
- Cost optimization scripts — automated resource cleanup and right-sizing
- CloudWatch monitoring and alerting configuration
Tech: Python, Boto3, AWS CLI, CloudShell, CloudWatch
On-chain analytics and wallet tracking for the TON ecosystem
- Built wallet analysis tools for tracking transactions, balances, and token holdings
- Real-time monitoring of wallet activity with alert systems
- Integration with TON API for deep transaction analysis
- Data visualization dashboards for portfolio tracking
Tech: Python, TON SDK, REST APIs, Data Analytics
Automated trading systems driven by market sentiment analysis
- Developed trading bots that analyze market sentiment from multiple data sources
- Integration with exchange APIs for automated order execution
- Risk management systems — stop-loss, take-profit, position sizing
- Backtesting framework for strategy validation
- Real-time performance monitoring and reporting
Tech: Python, Exchange APIs (Binance, Uphold), NLP, WebSocket, Pandas
DeFi protocols and on-chain programs on Solana
- Smart contract development for DeFi applications
- SolVoid privacy protocol contributions
- Token program integrations and SPL token handling
- Wallet integration and transaction building
Tech: Rust, Anchor, Solana CLI, Web3.js, TypeScript
Smart contracts and DeFi integrations across EVM chains
- Solidity smart contract development and deployment
- DeFi protocol integrations — swaps, liquidity provision, yield strategies
- Web3 application backends with ethers.js/web3.py
- Gas optimization and contract security best practices
Tech: Solidity, Hardhat, ethers.js, web3.py, OpenZeppelin
Custom business automation replacing manual processes
- E-commerce automation: Order processing, inventory sync, shipping notifications
- CRM integrations: Automated lead capture, follow-up sequences, data enrichment
- Data pipelines: API-to-database sync, ETL processes, reporting automation
- Notification systems: Multi-channel alerts (email, Slack, Telegram)
- Typical result: 20+ hours/week saved per client
Tech: n8n, REST APIs, Webhooks, PostgreSQL, various SaaS integrations
Production-grade bots for crypto communities and business operations
- Crypto alert bots — price tracking, whale monitoring, portfolio updates
- Community management bots — user verification, moderation, analytics
- Business notification bots — order alerts, system monitoring, reporting
- Interactive bots with inline keyboards, callback queries, and state management
Tech: Python, python-telegram-bot, aiogram, WebSocket, PostgreSQL
Custom knowledge management and workflow systems
- Built comprehensive project management systems in Notion
- Automated data flow between Notion and external tools via API
- Template systems for repeatable processes
- Dashboard creation for real-time project visibility
Tech: Notion API, Python, n8n, REST APIs
Real-time cryptocurrency portfolio monitoring and reporting
- Integration with Uphold API for live portfolio tracking
- Automated balance monitoring and performance calculations
- Multi-currency conversion and reporting
- Alert systems for significant portfolio changes
Tech: Python, Uphold API, REST, Data Visualization
Full-stack e-commerce solution for building materials
- E-commerce platform for construction chemistry products (JL Systematic s.r.o.)
- Product catalog management, pricing engine, order processing
- Market research and competitive analysis automation
- Supplier integration and inventory management
| Category | Technologies |
|---|---|
| Cloud | AWS (VPC, ECS, Lambda, RDS, S3, CloudFront, Route53, IAM, CloudWatch) |
| IaC | Terraform, CloudFormation, HCL |
| Containers | Docker, Docker Compose, ECS Fargate |
| CI/CD | GitHub Actions, Terraform Cloud |
| Languages | Python, Rust, Solidity, TypeScript, JavaScript, HCL, Bash |
| Blockchain | TON, Solana (Anchor), Ethereum (Hardhat), Web3.js, ethers.js |
| Automation | n8n, Python scripts, Telegram Bot API, REST/WebSocket APIs |
| Databases | PostgreSQL, DynamoDB, Redis, SQLite |
| Monitoring | CloudWatch, Grafana, custom dashboards |
| OS | Linux (Ubuntu), macOS |
- 🎓 Terraform Associate — In preparation (2025/2026)
- ☁️ AWS Practitioner — Hands-on production experience
- ⛓️ Blockchain Development — Multi-chain (TON, Solana, Ethereum)
- Ship fast — Working solution first, optimization second
- Automate everything — If I do it twice, I automate it
- Clean code — Modular, documented, maintainable
- Communicate clearly — No jargon, no surprises, regular updates
- Think in systems — Not just tasks, but scalable architectures
I'm available for:
- DevOps consulting & implementation — Terraform, AWS, CI/CD
- Blockchain development — Smart contracts, DeFi tools, trading systems
- Business automation — n8n workflows, API integrations, Telegram bots
- Technical architecture — System design, infrastructure planning
📧 Email: [paseka10jaroslav@gmail.com]
💬 Telegram: [@Paseka89
🔗 Upwork: [JaroslavP.]
🌐 GitHub: [github.com/] paseka10jaroslav-coder
"I don't just write code. I build systems that work while you sleep."