Jaroslav Maša
Full-Stack & Platform Engineer (Linux / Node.js / TypeScript / PostgreSQL)
Systems & Full-Stack Engineer specializing in design, development, and operations of modern web systems and infrastructure. Experienced in Linux server administration (Debian, Ubuntu, RHEL), Node.js/TypeScript backend services, PostgreSQL/MySQL database design, automation, monitoring, and application deployment in Docker environments with CI/CD pipelines. Works across the entire stack from database schema and API design through frontend applications in React/Next.js to application operations on Linux infrastructure with monitoring, logging, and security measures.
Key Competencies
Full-Stack Architecture & Development
Backend Services (Node.js, TypeScript)
Database Design & Optimization (PostgreSQL, MySQL)
Frontend Development (React, Next.js)
DevOps & Infrastructure (Docker, Kubernetes, Linux)
CI/CD Pipelines & Automation
System Administration & Monitoring
API Design & Integration
Cloud Deployment (AWS, Linux VPS)
Multi-platform Development (Desktop, Android)
Experience
Tech Founder & Full-Stack Developer — Mad-Hall s.r.o.
2025-11 — Present
Architecting, developing, and maintaining web applications with full-cycle ownership from architecture through deployment and monitoring.
- System architecture design and technical decision-making
- Full-stack development (backend and frontend)
- Database design and optimization
- CI/CD pipeline configuration and automation
- Infrastructure deployment and configuration
- Application monitoring and log management
- Performance optimization and maintenance
- Feature development and technical improvements
Application Operations Engineer — MONETA Money Bank, a.s.
Jan 2024 — Jul 2025
Managed and tuned multiple application environments (DEV / TST / PROD) and production infrastructure.
- Managed and tuned multiple application environments (DEV / TST / PROD)
- Managed Apache Tomcat and Apache HTTPD servers
- Configuration of system variables and application runtime optimization
- Automated log management and system protocol maintenance
- SSL/TLS configuration and basic system hardening
- Infrastructure migration support to AWS (certificate verification)
- Security testing using Check Point SandBlast
- Production incident resolution within multifunctional team
Backend Developer — 2Ring
Jul 2023 — Sep 2023
Backend development for call center (C# .NET Core / Framework).
- Backend development for call center (C# .NET Core / Framework)
- REST API design and implementation
- Backend business logic implementation
- Unit testing
- Work in agile development team (6 developers)
Infrastructure Engineer — Mailprofiler s.r.o.
Sep 2022 — Jul 2023
Managed Linux and Windows servers, email infrastructure and network operations.
- Linux and Windows server management
- Email infrastructure management (Postfix)
- SPF / DKIM / DMARC configuration
- Network management (DNS, DHCP, VPN, firewall)
- System monitoring and operations optimization
- Administrator task automation (Bash / PowerShell)
- Backup and system service management
Featured Project
Artist Room – Music Platform
Production-ready SaaS platform for managing artist profiles and music submissions built with full-stack ownership from architecture through deployment and monitoring.
- Complete system architecture design (frontend / backend / database)
- REST API and business logic implementation
- PostgreSQL database schema design with optimization
- Authentication and role-based access control
- Stripe subscription billing integration
- Spotify Web API integration
- File upload infrastructure implementation
- CI/CD pipelines with GitHub Actions
- Docker containerization and Kubernetes orchestration
- Application monitoring and log management with Grafana
Next.jsTypeScriptNode.jsPostgreSQLDockerKubernetesGitHub ActionsStripe APISpotify API
Tech Stack
Backend
Node.jsTypeScriptREST APIsC# .NET CoreSpring Boot
Frontend
ReactNext.jsTailwindCSSTypeScript
Database
PostgreSQLMySQLSchema DesignQuery Optimization
DevOps
DockerKubernetesGitHub ActionsCI/CD PipelinesLinux Administration
Tools & Platforms
GitGrafanaStripe APISpotify APIAWS
Education
Střední škola Informatiky a Cestovního ruchu SČMSD Humpolec s.r.o.
Computer Science
2018 - 2022
Languages
CzechNative
EnglishAdvanced (conversational and written)