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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.

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

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

    Role
    Product definition · architecture · implementation
    System scope
    Customer · business · administration
    Defining constraint
    Multi-service sequential scheduling
    Read the system case study

    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.

    Technologies

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

    Key decisions

    1. D1Go backend with PostgreSQL, PostGIS, and Redis
    2. D2Separate customer, business, and administration experiences
    3. D3Next.js web application and React Native mobile applications
    4. D4Multi-service sequential booking for the MVP
    5. D5Staff skills and availability by service
    6. D6Role-based access across customer, staff, owner, and administrator contexts
    7. D7Albanian-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

  • FrigoCold WMS

    Personal warehouse-management product under active development.

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

    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.

    Role
    Product and technical design
    System scope
    Receiving · inventory · sales · dispatch
    Defining constraint
    Auditable stock movement

    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.

    Technologies

    • Next.js
    • TypeScript
    • PostgreSQL
    • Prisma

    Key decisions

    1. D1Next.js and TypeScript monolithic application
    2. D2PostgreSQL with Prisma ORM
    3. D3Inventory modeled through explicit stock movements
    4. D4Carton and batch tracking
    5. D5Human confirmation before inventory mutations
    6. D6Role-based warehouse and administration actions
    7. D7Server-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

  • Offline-first Albanian AAC

    Offline-first proof of concept under active development.

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

    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.

    Role
    Product architecture · proof of concept
    System scope
    Communication boards · caregiver editing · speech
    Defining constraint
    Offline-first use on affordable tablets

    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.

    Technologies

    • React Native
    • Expo
    • TypeScript
    • SQLite

    Key decisions

    1. D1React Native tablet-first application
    2. D2SQLite as the local source of truth
    3. D3Offline-first data and media architecture
    4. D4Fixed communication-board layouts for motor-planning consistency
    5. D5Sentence bar with speak, backspace, and clear actions
    6. D6Albanian-first vocabulary and interface design
    7. D7Protected 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

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.

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

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

    Role
    Full-stack product delivery
    System scope
    Intake · assignment · communication · resolution
    Defining constraint
    Strict tenant isolation

    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.

    Technologies

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

    Key decisions

    1. D1PostgreSQL Row-Level Security for strict tenant isolation
    2. D2SAML, OIDC, and one-time-password authentication flows
    3. D3Asynchronous processing for background work
    4. D4Accessible and internationalized React interfaces
    5. D5OpenTelemetry and AWS services for operational monitoring

  • Enterprise Legal Technology and Document Review Platform

    ISA Consulting GroupConfidential client project

    Ongoing B2B consulting engagement.

    An established enterprise legal-technology platform for processing, searching, reviewing, and managing large collections of documents and electronically stored information.

    Improved the reliability, maintainability, security, and operational visibility of existing platform functionality through production issue investigation, dependency remediation, technical specifications, and production-readiness review.

    Role
    Full-stack platform delivery
    System scope
    Search · review · processing · integrations
    Defining constraint
    An established multi-service architecture

    Contribution

    Developed and maintained full-stack functionality across backend services, frontend interfaces, search and indexing components, document-review workflows, integrations, authentication, and enterprise identity functionality.

    Technologies

    • Ruby on Rails
    • React
    • TypeScript
    • Elasticsearch
    • MongoDB
    • MySQL
    • Redis
    • Sidekiq
    • AWS
    • OpenTelemetry

    Key decisions

    1. D1Full-stack delivery across an established multi-service architecture
    2. D2Elasticsearch-backed search and indexing workflows
    3. D3Asynchronous processing with Redis and Sidekiq
    4. D4Enterprise authentication and authorization integrations
    5. D5OpenTelemetry and AWS services for distributed tracing and monitoring

  • Automotive Regulatory Data and Integration Platform

    Lufthansa Industry SolutionsConfidential client project

    Enterprise client work.

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

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

    Role
    Backend and integration delivery
    System scope
    Vehicle data · integrations · observability
    Defining constraint
    Correct cross-system data contracts

    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.

    Technologies

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

    Key decisions

    1. D1Modular Spring Boot services and REST integrations
    2. D2Vendor-neutral instrumentation with OpenTelemetry
    3. D3AWS X-Ray and CloudWatch for tracing and operational visibility
    4. D4Trace and span correlation in application logs
    5. D5Micrometer and Spring Boot Actuator for metrics and health information

  • Enterprise Cloud and Developer Platform

    Lufthansa Industry SolutionsConfidential internal project

    Internal platform-engineering work.

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

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

    Role
    Platform engineering
    System scope
    Onboarding · deployment · environment support
    Defining constraint
    Repeatable multi-environment configuration

    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.

    Technologies

    • Google Cloud
    • Kubernetes
    • Kustomize
    • Docker

    Key decisions

    1. D1Containerized services deployed to Kubernetes
    2. D2Kustomize overlays for environment-specific configuration
    3. D3Google Cloud projects and service-account-based access
    4. D4Service-account impersonation for controlled administration
    5. D5Reusable platform configuration across application environments

  • ProFisc: Fiscalization and Electronic-Invoicing Platform

    Tetra Solutions

    Professional product work.

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

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

    Role
    Backend and web delivery
    System scope
    Invoice processing · fiscalization · integrations
    Defining constraint
    Evolving regulatory workflows

    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.

    Technologies

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

    Key decisions

    1. D1Java and Spring Boot backend services
    2. D2React-based web interfaces
    3. D3REST integrations with tax-administration workflows
    4. D4Validation and status management around invoice processing
    5. D5Relational data modelling for enterprise invoicing workflows

Have a product or engineering challenge to discuss?

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

Discuss an engineering engagement

Or write directly to laerti98@gmail.com.