Product Engineering
For founders and teams who need a senior engineer who can own a feature or a product end to end, not just implement a ticket.
Full-Stack Engineer · SaaS Founder
I build products people actually pay for.
I build production software used by real customers. I'm a full-time Software Engineer at a German software company, and outside of work I've built SaaS products with paying customers across three continents.
- 400+ registered users
- Paying customers across Europe, North America, and Asia
- 100% organic SEO growth
- 6+ years shipping production software
Services
How I can help
Two ways to work together, described in business outcomes, not a laundry list of frameworks.
SaaS & Internal Tools
For businesses that need software built from scratch: dashboards, APIs, customer portals, workflow tools, with the same care I put into my own products.
Selected work
Products designed for real use
Two featured projects. Each began with a concrete problem and shipped with a measurable business outcome.
Formgrid
- Problem
- Businesses needed form backends without vendor lock-in, opaque data practices, or building a server for every site, and once submissions came in, no way to track or follow up without a separate CRM.
- Solution
- An open-source form backend and no-code builder with a built-in lead pipeline and an AI Smart Inbox that automatically categorizes, prioritizes, and summarizes every submission.
- Business outcome
- Grew to 400+ users with paying customers across multiple continents through organic SEO. Open-sourced with 46 GitHub stars and processes over 1,000 submissions each month.
- React
- TypeScript
- Node.js
- Express
- Prisma
Sheetrocket
- Problem
- Teams needed live spreadsheet data in their products, without backends, Cloud credentials, or fighting API rate limits.
- Solution
- A micro-SaaS that turns any Google Sheet into a documented JSON API, with dashboards, caching, and usage controls.
- Business outcome
- Grew to 200+ active users and validated product market fit with no external funding.
- React
- TypeScript
- Next.js
- Node.js
- MySQL
- Prisma
- Redis
How I work
A calm path from idea to launch
Five clear stages. You always know where we are, and what comes next.
- 01
Discovery
Clarify goals, users, constraints, and success metrics, so we build the right thing first.
- 02
Planning
Architecture, scope, and milestones. A clear plan before a single feature ships.
- 03
Development
Iterative delivery with working software every sprint. Transparent progress, no black boxes.
- 04
Launch
Hardening, documentation, and handoff so the product lands cleanly in production.
- 05
Support
Optional partnership after launch: fixes, iteration, and guidance as usage grows.
Experience
Impact over job titles
Roles framed by the problem solved and the business outcome, not a stack dump.
Senior Frontend Engineer
Green Vision Solutions GmbH · Germany · Remote
2024 - Present
- Problem solved
- GreenHub's carbon reporting UI needed higher accuracy and reliability for the audits hundreds of companies rely on.
- Business outcome
- Refactored the frontend architecture with React and Redux Toolkit to separate forms from views, rebuilt the KPI dashboard's data formatting and calculation logic for audit-grade accuracy, and built a Jest test suite to catch regressions before release. Reduced redundant API calls and prevented empty resource creation, improving server reliability, while more accurate KPI dashboards and faster QA cycles contributed to customer adoption and revenue growth over the past 2 years, as the sole frontend engineer on the platform.
- React
- TypeScript
- Redux Toolkit
- Jest
Frontend Engineer
Asqii LLC · Remote
2021 - 2023
- Problem solved
- School Desk needed a clearer admin experience for schools running complex, decentralized operations.
- Business outcome
- Faster delivery with the CTO and backend team, a more intuitive admin UX, and stronger adoption among administrators.
- React
- React Native
- Redux
- JavaScript
Junior Full-Stack Developer
aPavone Concepts · Remote
2020 - 2021
- Problem solved
- An e-commerce platform needed steady feature delivery and fewer production bugs.
- Business outcome
- Improved usability and stability while building the foundation for independent product ownership later.
- PHP
- MySQL
- React
- JavaScript
Writing
Notes from the work
Working notes on backends, retrieval, and the bugs that only show up once real data is in the system.
- engineering
10 min read • Aug 31, 2026
I Deployed a Backend API on Vercel and Here Is What Broke
The API was returning different data on the same query. I spent three days assuming it was my bug before I understood what serverless actually does between requests.
8 min read • Aug 28, 2026
I Added AI Lead Classification to My Form Tool Without Slowing Down Submissions
I added AI-powered lead classification to my form tool. Here's how I designed it to categorize, prioritize, and summarize incoming form submissions without putting AI on the critical path.
- systemdesign
8 min read • Aug 25, 2026
The N+1 Query Problem: Why Your API Might Be Making 101 Database Queries Instead of 2
Why your API might be making 101 database queries instead of 2. Learn what the N+1 query problem is and how to fix it with SQL joins and ORM eager loading.
- systemdesign
9 min read • Aug 25, 2026
What Actually Makes a Software Engineer Great (It's Not the Framework You Know)
What actually separates senior engineers from beginners isn't the framework they know. Learn why understanding fundamentals, product thinking, and system design matters more than ever in the age of AI coding tools.
About
I build from Ghana. The products get used everywhere.
I've spent six years shipping production software, currently as the sole frontend engineer on a carbon reporting platform used across Germany and Europe. Alongside that, I've spent the past year building Formgrid on my own, at night, from writing the backend to writing the blog posts that got it found. A lawyer in Brazil found it through Perplexity AI. An event manager in San Diego upgraded the same day she signed up. Neither of them cared where it was built. They cared that it worked.
I hold every project to that same standard. It has to work for the person with the problem.
Available for select projects
Have a product to build? Let's talk.
Ready to build your next product? Complete the consultation form below to get started.
For general inquiries, message me at: allen@formgrid.dev
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