# Product Engineering

> Embedded product engineering teams for enterprise platforms, SaaS and IoT, working in .NET, C#, React, Next.js and Python. One team, for years.

Source: https://lastdoorsolutions.com/services/product-engineering

## Architecture That Compounds

Every technical decision either compounds value or compounds debt. We default to patterns that compound value: Clean Architecture for separation of concerns. Domain-driven design for complex business logic. Entity Framework Core with repository patterns. React component libraries with Storybook for UI consistency. CI/CD pipelines that enforce test coverage before merge.

The result is codebases that new engineers can onboard to in days. Systems that can absorb new requirements without structural changes. Platforms that scale without rewrites.

Our longest product engagement is 8+ years and ongoing. Same codebase. Same architecture. No major rewrites. The system has grown from a single-tenant application to a multi-tenant enterprise platform serving multiple business units. That durability is the result of strict separation of concerns and a team that treats every commit as code they will maintain for years.

## Embedded in your team

We join your GitHub org, attend your standups, work in your project management tools, and ship alongside your team. For startups, we match startup pace: daily deploys, rapid iteration, direct communication with founders. For enterprise, we bring the process discipline that complex systems require: pull request reviews, automated testing gates, release management, and documentation.

Both get the same engineering quality. The process adapts. The standards do not.

## What's Included

- **Architecture design:** Clean Architecture, domain-driven design, multi-tenancy patterns
- **Full-stack development:** Backend APIs, frontend applications, database design, infrastructure
- **Embedded team model:** Engineers join your tools, attend your standups, and overlap your hours where the work needs it
- **Automated testing:** Unit tests, integration tests, E2E tests, visual regression testing
- **CI/CD pipelines:** Automated build, test, and deploy workflows
- **Code review and quality gates:** Pull request reviews, test coverage enforcement, linting
- **DevOps and infrastructure:** Azure, AWS, containerization, monitoring, alerting
- **Technical documentation:** Architecture decision records, API docs, onboarding guides

## Tech Stack

- **.NET 8.0 / C#:** Enterprise platforms, APIs, multi-tenant systems
- **React 19:** Frontend applications, component libraries
- **Next.js 16:** Full-stack web applications, SSR/SSG
- **TypeScript:** Type safety across frontend and backend
- **Laravel 12:** PHP applications, rapid development
- **Python / FastAPI:** Data pipelines, ML integration, automation
- **PostgreSQL / SQL Server:** Relational databases
- **Entity Framework Core:** ORM for .NET applications
- **Azure DevOps:** CI/CD, work item tracking, repos
- **Storybook:** Component documentation and visual testing
- **Vitest / Playwright:** Unit and E2E testing

## Who This Is For

- **Product companies** that need senior engineers without US hiring costs. Our rates are 40-60% below equivalent US rates for the same architecture quality.
- **Startups (Seed to Series B)** that need an embedded engineering team shipping product from week one. No ramp-up period, no training wheels.
- **Enterprise organizations** that need a long-term engineering partner.

## Proof

- Enterprise platform engagement of 8+ years (ongoing). Clean Architecture codebase maintained without a major rewrite.
- The same platform grew from single-tenant to multi-tenant, serving multiple business units with role-based access control.
- AI tooling in production: orchestration systems, Model Context Protocol (MCP) integrations and internal productivity tools.