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$
USD
I will fix your broken API integration, webhook, or backend issues
Eugenio A
About this gig
Broken API, webhook, or backend flow? I diagnose the real failure, fix it cleanly, and explain why it broke.
WHAT I FIX
- FastAPI or backend endpoint errors
- API integrations and webhooks failing silently
- Auth and token issues (OAuth, JWT, API keys)
- Request and response mapping bugs
- CORS, timeout, retry, and callback problems
- Broken agent or automation handoffs
WHAT YOU GET
- root-cause diagnosis
- clean fix or patch
- brief change summary
- prevention notes for the same failure class
BEST FIT
- one broken workflow or integration
- API, webhook, and backend bugs that already exist
- rescue and stabilization, not greenfield build
MESSAGE ME BEFORE ORDERING IF
- production access is needed
- the issue spans multiple systems
- you are not sure which package fits
Get to know Eugenio A
Eugenio A
Security Researcher and FullStack Developer
- FromItaly
- Member sinceMar 2026
- Avg. response time1 hour
- Last delivery1 month
Languages
English, Italian
Full-stack developer and security researcher. I build scalable web apps (Python/React) and secure them with professional auditing. Services: smart contract security reviews, AI/ML infrastructure hardening, Python backend development, React frontends, API integrations. Track record includes discovering critical vulnerabilities in ML frameworks and building autonomous security agents on decentralized GPU networks. Clean architecture, performance-focused.
Other Software Development Services I Offer
FAQ
Q: What do you need from me to start fixing the issue?
A: Share the error message or the unexpected behavior you're seeing. If possible, include the relevant code file or API endpoint URL. Access to the repo (GitHub/GitLab) speeds things up, but I can start from symptoms too.
Q: What if my issue is more complex than expected?
A: I'll assess the scope before starting. If it needs a higher package, I'll let you know upfront — no surprises. The free initial assessment helps us both understand the real scope.
Q: Do you work with any programming language?
A: I specialize in Python, JavaScript, and TypeScript backends. I work with FastAPI, Django, Flask, Node.js, Express, and most REST/GraphQL APIs. If your stack is different, message me first and I'll let you know.
