Robotics · ControlWork in progress
Robotics Flight Experiments
Early-stage experiments around control loops, onboard decision logic, and safe motion planning for small autonomous systems.
2026Projects
Selected backend-focused work and experimental builds around automation, robotics, and space-oriented systems.
Selected work
Three project directions — one full case study so far, two more taking shape.
Backend · Java EEFeaturedBookr
Appointment booking system for beauty businesses such as hair salons, nail studios, and massage services. Built as a technical high school final exam project.
2025–26ExpandedOpen details
Backend · Java EEFeatured
Bookr
Appointment booking system for beauty businesses such as hair salons, nail studios, and massage services. Built as a technical high school final exam project.
This case study covers the backend architecture I owned within a three-person team — I led backend development and system design, while my teammates built the Angular frontend and helped with the database layer.
The backend follows a strict three-layer architecture. Every database operation runs through stored procedures. It includes JWT access and refresh token flow, Argon2 password hashing, optional TOTP 2FA, company and staff management, weekly calendar scheduling, reviews, and audit logging.
Tech stack
Java 17JAX-RS (REST API)JPA / HibernateMySQL + Stored ProceduresJWT + Argon2 + TOTPWildFly 26.1.1Maven
Open full case study+
Role
Backend developer + architecture owner
Scope
Auth, company management, scheduling, reviews
Priority
Security, consistency, predictable API contracts
Deployment
Portfolio case study (no heavy production hosting)
Delivered capabilities
Identity and access
Registration and loginJWT auth with refreshArgon2 password hashingTOTP 2FA flow
Business operations
Company profile managementStaff invitationsRole-aware endpointsReview management
Booking domain
Weekly scheduling viewAppointment lifecycleConflict-safe updatesAudit-oriented event logging
Engineering proof points
Consistent REST contracts across modules.
Clean separation between transport, domain, and persistence layers.
Security-first authentication path documented end-to-end.
Domain operations designed with transactional boundaries in mind.
Demo flow
A guided walkthrough that demonstrates architecture quality without requiring full DB or backend deployment.
01Sign in as company admin and enable 2FA.
02Invite a staff member and assign service permissions.
03Create and edit bookings in the weekly calendar.
04Inspect API responses and audit records.
Want the full backend walkthrough?
I can share architecture notes, endpoint examples, and implementation details in a private demo call.
AI · SystemsWork in progress
AI and Simulation Sandbox
A practical sandbox for model-assisted decision paths, simulation-based testing, and system-level reliability checks.
2026