Open to new opportunities · Norristown, PA

Hi, I'm Mike Lautensack

Full-Stack
Web Developer

I build robust, production-grade web applications with TypeScript, React, and Next.js.

About Me

Product-minded full-stack engineer.

I'm a full-stack web developer who builds robust, production-grade web applications with TypeScript, React, and Next.js. My work spans the entire stack — from payment integrations and server-side rendering to reusable component libraries.

Recent highlights include integrating a payment processor into a production e-commerce webshop and leading its migration to TypeScript and React Server Components. I've also delivered production web applications for a range of clients through several years of contract work.

What sets me apart is a blend of engineering depth and business sense shaped by prior entrepreneurial experience, which helps me build solutions that genuinely fit real-world needs — particularly SaaS products for small businesses. That same mindset drives ServiceClerk, the field service management SaaS I founded and launched in 2026. I built it as the sole engineer, and it takes contractors from the first quote to the final payment, with contracts, change orders, progress billing, and Stripe-powered payments all tied to the job.

Career

Work Experience

01.

Founder / Full-Stack Engineer @ ServiceClerk

Jun 2026 – Present
  • Designed, built, and launched getserviceclerk.com, a production field service management SaaS for contractors, as the sole engineer across product, backend, infrastructure, and UI
  • Built end-to-end quote-to-cash workflows spanning quotes, contracts, change orders, deposits, progress billing, invoices, and customer-facing share links
  • Built CRM, scheduling, job-linked task management, customer records, and branded document workflows for contractors running active jobs
  • Architected the application with the Next.js App Router, TypeScript, Supabase/PostgreSQL, Google OAuth and email authentication, and Vercel deployment
  • Integrated Stripe Billing and Stripe Connect for SaaS subscriptions, connected-account onboarding, and contractor-to-homeowner payment flows
  • Implemented transactional email with Resend for account and customer-document workflows
02.

Full-Stack Web Developer @ Loxone

Oct 2025 – Jun 2026
  • Integrated the Bank of America checkout API for credit card payments on shop.loxone.com
  • Led the migration of the Next.js webshop from JavaScript to TypeScript and from client-side rendering to React Server Components with server-side data fetching, improving performance, UX, and SEO
  • Built the Loxone Status Page, an internal service-monitoring dashboard
  • Integrated Sentry into shop.loxone.com for production error and performance monitoring
03.

Full-Stack Developer @ Independent / Contract

May 2023 – Oct 2025
  • Built and maintained web applications for small businesses using Node.js, Next.js, React.js, and PostgreSQL
  • Integrated secure Stripe payment systems and implemented tiered subscription logic for SaaS platforms
  • Developed internal React component libraries and documentation for developers
04.

Full-Stack Developer - Cargo Fax - cargofax.co (Contract) @ Cargo Fax

Dec 2024 – May 2025
  • Refactored legacy Python app to Next.js 14 app router with a PostgreSQL database via Supabase
  • Integrated subscription billing with Stripe
  • Integrated Sentry for error and performance monitoring in production
05.

Backend Developer - evyAI - evyai.com (Contract) @ evyAI

Dec 2024 – Jan 2025
  • Wrote Google Firebase cloud functions in TypeScript for an AI web application + chrome extension
  • Wrote custom authentication and logger middleware for backend
06.

Frontend Developer (Contract) @ Software Harmonics LLC

Feb 2024 – Aug 2024
  • Enhanced production React.js sales platform used by sales teams at a commercial trucking company
  • Refactored legacy React frontend application from Create React App to Vite, reducing dev server startup time from minutes to seconds, added hot module reloading, and updated from React 16 to React 18
  • Developed custom TypeScript React.js component library and VSCode extensions for internal development workflows at Software Harmonics LLC
  • Created comprehensive documentation for component library and developer tooling
Kind Words

Testimonials

“Mike is a great React Developer who embodies a commitment to understanding best practices and aligning with industry standards. His meticulous approach to learning and implementing these principles ensures that our projects maintain the highest levels of quality and efficiency. Mike's dedication to staying informed about the latest developments in React and related technologies sets him apart as a forward-thinking professional. With his attention to detail and focus on excellence, Mike consistently delivers exceptional results, making him an invaluable asset to our team.”

L
Lonny B.Software Harmonics LLC
Credentials

Certifications

Microsoft Azure

Microsoft Certified: Azure Fundamentals (AZ-900)

Validates foundational knowledge of cloud concepts and core Microsoft Azure services, security, and pricing.

Issued by Microsoft
C#

Foundational C# with Microsoft

Fundamentals of the C# programming language and .NET

Issued by Free Code Camp / Microsoft LearnSeptember 2024ID: fcc7ca55ec2-de04-4ccf-8dc1-7c111f5d352a-fcswm
Toolbox

Skills & Technologies

jslogo

JavaScript

The foundational language of the web, powering interactive, dynamic behavior across browsers and servers.

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TypeScript

Statically typed JavaScript for building large, scalable, and maintainable applications with confidence. My primary language day to day.

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React.js

Component-based library for building fast, interactive, and reusable user interfaces.

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Next.js

The React framework for production — server-side rendering, static generation, and full-stack apps with the App Router and React Server Components.

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Vite

Lightning-fast build tool and dev server, including library mode for shipping reusable component libraries.

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Node.js

JavaScript runtime for building fast, scalable server-side applications and APIs.

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Express.js

Minimal, flexible Node.js framework for building robust REST APIs and backend services.

c#logo

C#

Modern, object-oriented language for building cross-platform applications on the .NET platform.

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.NET

Free, open-source, cross-platform framework for building web services and applications.

azurelogo

Azure

Microsoft's cloud platform for deploying, hosting, and scaling web applications and services. Microsoft Certified: Azure Fundamentals (AZ-900).

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Vercel

The platform for deploying and hosting Next.js and modern frontend applications with zero-config CI/CD.

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Git

Distributed version control for tracking changes and collaborating on code with confidence.

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GitHub

Cloud platform for hosting Git repositories, code review, and team collaboration.

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Docker

Containerization for building, shipping, and running applications consistently across environments.

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PostgreSQL

Powerful open-source relational database for reliably storing and querying application data.

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MySQL

Widely used open-source relational database for web and application backends.

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REST API Design

Designing clean, scalable, and well-documented HTTP APIs that follow REST conventions.

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Socket.io

Real-time, bidirectional communication between clients and servers over WebSockets.

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Three.js

JavaScript library for rendering interactive 3D graphics and animations in the browser.