Custom API Development
I build REST/JSON APIs that are easy to use and safe to operate: clear contracts, validation, pagination, rate limiting, authentication and error handling from the start. In Go or PHP.
What I Can Help With
Build REST/JSON APIs and backends.
Typical Problems
Relevant Experience
Built production APIs for Cenoskop (product search and comparison), facha.sk (job marketplace REST API) and Paidshield (encrypted messaging API). Authentication, rate limiting, pagination and error handling from day one.
What Is Included
How It Works
We agree on the API contract, build endpoints incrementally, and hand over documented, tested code. From €1,000 for a typical API.
Starting from €1,000
Typical small-to-medium API. Complex scope is estimated after a short written scoping.
Frequently Asked Questions
Go or PHP for my API?
Depends on your existing stack and throughput needs. Go for high-throughput/low-latency, PHP/Symfony if you need to reuse existing code and models.
Related Services
Systems I've Built
facha.sk
Find a job or offer your services.
Built the Go backend — API, matching logic and deployment.
Paidshield
Chat application with end-to-end encryption.
Built the backend and encryption layer for a secure chat application.
remotedaemon.com
Remote security scanner with ping and certificate checking.
Built the scanning daemon and monitoring backend.
Synopsee
A Cleaner, Safer Internet. Take control of your DNS. Block ads, trackers, and malicious sites with customizable profiles.
Built the DNS resolution backend and profile management system.
AnalyticsForWebsite
Custom solution for collecting and evaluating traffic metrics with emphasis on processing speed and minimizing backend load.
Designed and built the backend for fast traffic metric collection and evaluation.
Not sure what's wrong?
Write what's happening and paste anything relevant — errors, logs, metrics. I'll have a look and tell you what I think.