Browse categories
English
$
USD
Connect to your AI
I will diagnose and fix your node js backend or API bug
Philipp Fanta
About this gig
An endpoint fails. A request hangs. Data saves incorrectly. Your next release is waiting.
I will investigate one reproducible Node.js or TypeScript backend issue, explain what the evidence shows, and repair the agreed cause with a check that catches it next time.
I build and maintain Web2Labs, my own software product. I trace failures through the request and data flow so the repair addresses the evidence-supported cause.
BASIC: a diagnostic report with reproduction findings, evidence, and a repair plan. No fix included.
STANDARD: repair one agreed issue in one endpoint or function.
PREMIUM: repair one agreed broken flow across up to 3 related endpoints.
Implementation includes source changes, a relevant regression check, before/after test evidence, and clear handoff notes.
Send the expected result, actual result, reproduction steps, and your stack. I will check fit before you order. If the cause is still unknown, start with diagnosis so you can decide what to fix with evidence.
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Philipp Fanta
Philipp Fanta
- FromGermany
- Member sinceFeb 2017
- Last delivery1 year
Languages
English, German
I'm a professional developer and creator with over 10 years of experience. Using cutting-edge technologies, programming languages, and AI, I specialize in creating high-quality art, videos, code, software, and much more. Whether you're looking for custom software, artistic digital creations, or innovative tech solutions, I’m passionate about bringing your ideas to life. I’m committed to delivering top-tier results with precision and creativity, ensuring every project meets the highest standards.
Let’s work together to create something amazing!
FAQ
Should I order a fix or a diagnosis?
Choose a fix only after we have agreed the issue and scope. If the cause or effort is uncertain, Basic gives you evidence and a repair recommendation. Basic is a paid diagnostic deliverable, not a promise that every issue can be fixed for that price.
What if you cannot reproduce the bug?
The diagnostic report will show what I tested, the evidence available and what access, data or conditions are missing. I will not claim a cause I cannot support. We agree any additional investigation before extending the work.
Can you fix a production outage immediately?
This is scheduled development work, not a 24/7 incident-response service. Send the impact and deadline first. I will confirm availability and a safe approach; I do not promise emergency response times through a standard package.
Which bugs are a good fit?
Node.js/TypeScript request handling, validation, database-flow and asynchronous workflow problems are a good fit. Share your stack first. New features, security audits, infrastructure rebuilds and unrelated bug lists need different scopes.
What access do you need?
A runnable repository, setup steps and a safe test environment. Share redacted examples first. Do not paste passwords, production tokens or customer data into requirements; we will agree authorised, limited access.
How do you verify a repair?
I use the agreed reproduction case, a relevant regression check and a before/after walkthrough in the test environment. You receive source changes and notes explaining the fix, remaining limitations and how to verify it.
What does one revision cover?
One consolidated revision covers changes within the agreed scope. A new feature, provider or workflow needs a separate quote. If my delivery misses an agreed acceptance check, I will correct that as part of the order.
Do you use AI-assisted tools?
I may use AI-assisted coding and analysis tools. I review the changes and test the agreed workflow. Tell me any code, data or tool restrictions before sharing files; we will agree the working method first.
