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Fiverr Pro
English
$
USD
I will build golang rest apis with postgresql and API integrations
Ilya G
About this gig
I build Go APIs for applications that need reliable data access or a connection to another service. Send me the route, input and expected result. I will confirm the contract before coding.
My work includes OrderPulse, an exchange-data service with PostgreSQL and Telegram notifications. I also built an open-source LLM Gateway with JSON and SSE responses, request cancellation and Prometheus metrics.
Choose the scope that matches your backend:
Basic: one REST endpoint or one API connection in an existing Go service.
Standard: up to 5 REST endpoints with PostgreSQL.
Premium: up to 10 endpoints, PostgreSQL, one external API and Docker packaging.
You receive Go source, tests, example HTTP requests and setup instructions. I check validation and agreed error cases as well as successful requests.
Authentication, streaming, monitoring and deployment are available when scoped in advance. Hosting and paid API access are separate costs.
Send the API documentation, example JSON and relevant code on Fiverr before ordering. We will agree the endpoints and acceptance checks first.
Get to know Ilya G
Ilya G
Full Stack Developer, Business Apps, APIs and Automation
- FromRussia
- Member sinceOct 2026
Languages
Russian, Ukrainian, English
I build business applications, custom CRMs, APIs, and automation. I handle interfaces, backend logic, databases, integrations, and deployment.
My work includes MAYAK, a construction CRM built from scratch, OrderPulse for exchange monitoring and Telegram alerts, and an open-source LLM gateway in Go.
Around five years in software and IT. Stack: React, Next.js, TypeScript, Go, PostgreSQL, Docker, n8n. You work directly with me, review working versions, and get a clear handover.
My Portfolio
Other Software Development Services I Offer
FAQ
What counts as one endpoint?
One HTTP method and route with agreed behaviour, such as GET /orders or POST /orders. Additional methods, complex processing and external integrations affect the scope. We list the endpoints before the order starts.
Can you work with an existing Go backend?
Yes. Share the Go version, framework, relevant code and the change you need. I will review compatibility before confirming the package. Large refactors and undocumented legacy systems need a separate estimate.
Do you include authentication?
Authentication is included only when it is part of the agreed scope. Tell me whether you need API keys, existing user sessions or another method. Permissions, third-party login and multi-tenant access need explicit requirements.
What do I receive?
Go source code, tests for the agreed behaviour, example HTTP requests and setup instructions. Premium includes a Docker configuration. Deployment, dashboards and ongoing support can be added after we agree the requirements.
Can you add streaming or monitoring?
Yes. I work with SSE, request cancellation, Prometheus and Grafana. These features are scoped separately unless listed in your agreed package deliverables. The public LLM Gateway in my portfolio shows this work.
What does a revision cover?
Adjustments to the agreed endpoints or integration. New routes, data models, providers and business rules are additional work. Basic and Standard include 2 rounds of feedback; Premium includes 3.
