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Project archive

Projects

Detailed product and enterprise case studies covering the problem, contribution, outcome, key decisions, progress, and technology choices.

Products I am building

Products I define and build end to end, from domain modelling and architecture to web, mobile, and operational workflows.

  • Featured product

    Buku

    Personal product under active development.

    Context

    A multi-application appointment-booking, business-management, and service-discovery platform for appointment-based businesses.

    Contribution

    Product definition and architecture across backend services, customer and business mobile applications, a web experience, administration workflows, authentication, scheduling, media, reviews, notifications, and business-management features.

    Outcome

    Defined the platform architecture and core booking workflows across customer, business, and administration experiences, with the backend and application foundations under active implementation.

    Key decisions

    • Go backend with PostgreSQL, PostGIS, and Redis
    • Separate customer, business, and administration experiences
    • Next.js web application and React Native mobile applications
    • Multi-service sequential booking for the MVP
    • Staff skills and availability by service
    • Role-based access across customer, staff, owner, and administrator contexts
    • Albanian-first internationalization with English support

    Product progress

    • Completed: Monorepo, shared packages, and local infrastructure established
    • Completed: Core booking, staff, business, and administration workflows defined
    • In progress: Customer and business experiences under active implementation
    • Planned: First hosted end-to-end release

    Technologies

    • Go
    • PostgreSQL
    • PostGIS
    • Redis
    • Next.js
    • React Native
    • TypeScript
    • AWS

  • FrigoCold WMS

    Personal warehouse-management product under active development.

    Context

    A warehouse-management system for refrigerated meat import and distribution workflows, covering inventory intake, storage, carton tracking, sales, dispatch, reporting, and operational controls.

    Contribution

    Product and technical design for inventory workflows, stock movements, labeling, operational roles, reporting, auditability, and the web application and data model supporting warehouse staff and administrators.

    Outcome

    Defined the core domain model and operational workflows needed to track inventory movements and warehouse actions with clear auditability and human confirmation around stock-changing operations.

    Key decisions

    • Next.js and TypeScript monolithic application
    • PostgreSQL with Prisma ORM
    • Inventory modeled through explicit stock movements
    • Carton and batch tracking
    • Human confirmation before inventory mutations
    • Role-based warehouse and administration actions
    • Server-side validation around stock-changing operations

    Product progress

    • Completed: Warehouse domain model and stock-movement rules defined
    • Completed: Next.js, Prisma, and PostgreSQL application foundation established
    • In progress: Receiving, inventory, sales, dispatch, and reporting workflows under implementation
    • Planned: End-to-end validation with realistic warehouse scenarios

    Technologies

    • Next.js
    • TypeScript
    • PostgreSQL
    • Prisma

  • Offline-first Albanian AAC

    Offline-first proof of concept under active development.

    Context

    An Albanian-language augmentative and alternative communication application designed for offline use on affordable tablets by AAC users, therapists, teachers, and assistive-technology specialists.

    Contribution

    Product architecture and proof-of-concept development for communication boards, sentence construction, local content and media, caregiver editing, offline speech output, search, favorites, and protected configuration workflows.

    Outcome

    Established an offline-first application foundation and core communication-board interactions for an underserved Albanian-language use case, with local data, assets, and speech-oriented workflows designed to work without a continuous internet connection.

    Key decisions

    • React Native tablet-first application
    • SQLite as the local source of truth
    • Offline-first data and media architecture
    • Fixed communication-board layouts for motor-planning consistency
    • Sentence bar with speak, backspace, and clear actions
    • Albanian-first vocabulary and interface design
    • Protected settings and role-sensitive configuration

    Product progress

    • Completed: Tablet-first communication board and sentence-building interactions established
    • Completed: SQLite-backed offline data and local assets established
    • In progress: Caregiver editing, vocabulary management, and Albanian speech workflows under development
    • Planned: Focused proof of concept for specialist evaluation

    Technologies

    • React Native
    • Expo
    • TypeScript
    • SQLite

Enterprise and client systems

Production software where reliability, security, integrations, and operational visibility matter.

  • Public Records and Information Request Management Platform

    ISA Consulting GroupConfidential client project

    Ongoing B2B consulting engagement.

    Context

    A multi-tenant platform for managing public-records, information-access, and privacy-related requests from intake through assignment, communication, tracking, and resolution.

    Contribution

    Developed full-stack features for request workflows, tenant-aware data access, user and role management, secure authentication, backend APIs, user-facing interfaces, asynchronous processing, and platform integrations.

    Outcome

    Delivered maintainable tenant-aware request-management and authentication workflows with production-readiness, security, observability, and error-handling considerations built into implementation and review.

    Key decisions

    • PostgreSQL Row-Level Security for strict tenant isolation
    • SAML, OIDC, and one-time-password authentication flows
    • Asynchronous processing for background work
    • Accessible and internationalized React interfaces
    • OpenTelemetry and AWS services for operational monitoring

    Technologies

    • Python
    • FastAPI
    • SQLAlchemy
    • PostgreSQL
    • Redis
    • React
    • TypeScript
    • AWS
    • SAML
    • OIDC
    • OpenTelemetry

  • Automotive Regulatory Data and Integration Platform

    Lufthansa Industry SolutionsConfidential client project

    Enterprise client work.

    Context

    A modular Java and Spring Boot platform for processing, calculating, and exchanging automotive regulatory and vehicle-related data.

    Contribution

    Developed and maintained backend services, integrated internal services with external automotive systems, resolved data-contract and serialization mismatches, and strengthened validation, error handling, and service-to-service communication.

    Outcome

    Improved integration reliability and operational visibility through corrected data contracts, trace-correlated logging, distributed tracing, metrics, dashboards, alerts, and dependency-security remediation.

    Key decisions

    • Modular Spring Boot services and REST integrations
    • Vendor-neutral instrumentation with OpenTelemetry
    • AWS X-Ray and CloudWatch for tracing and operational visibility
    • Trace and span correlation in application logs
    • Micrometer and Spring Boot Actuator for metrics and health information

    Technologies

    • Java
    • Spring Boot
    • Gradle
    • OpenTelemetry
    • Micrometer
    • AWS X-Ray
    • CloudWatch
    • AWS CDK

  • Enterprise Cloud and Developer Platform

    Lufthansa Industry SolutionsConfidential internal project

    Internal platform-engineering work.

    Context

    An internal cloud platform used to standardize application deployment and operation across development teams.

    Contribution

    Maintained Kubernetes and Kustomize configurations, supported application setup across environments, worked with Google Cloud projects and service accounts, and investigated deployment, networking, permission, and authentication issues.

    Outcome

    Supported more repeatable application onboarding and deployment through consistent cloud configuration, environment management, and platform support.

    Key decisions

    • Containerized services deployed to Kubernetes
    • Kustomize overlays for environment-specific configuration
    • Google Cloud projects and service-account-based access
    • Service-account impersonation for controlled administration
    • Reusable platform configuration across application environments

    Technologies

    • Google Cloud
    • Kubernetes
    • Kustomize
    • Docker

  • ProFisc — Fiscalization and Electronic-Invoicing Platform

    Tetra Solutions

    Professional product work.

    Context

    A web-based fiscalization and electronic-invoicing platform for businesses operating under Albania's fiscalization framework.

    Contribution

    Developed and maintained backend APIs and web interfaces for creating, processing, validating, and managing fiscal and electronic invoices, tax-administration integrations, invoice status workflows, relational data, and enterprise integrations.

    Outcome

    Supported reliable invoice-processing and fiscalization workflows while investigating production issues and adapting application functionality to evolving invoicing requirements.

    Key decisions

    • Java and Spring Boot backend services
    • React-based web interfaces
    • REST integrations with tax-administration workflows
    • Validation and status management around invoice processing
    • Relational data modeling for enterprise invoicing workflows

    Technologies

    • Java
    • Spring Boot
    • React
    • REST APIs
    • Relational databases

Have a product or engineering challenge to discuss?

I am available for selected product-development, consulting, and senior engineering engagements.

Discuss a project

Or write directly to laerti98@gmail.com.