I will build your backend, rest API and integrations in go or spring boot

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I
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Jean Benites
build your backend, rest API and integrations in go or spring boot
build your backend, rest API and integrations in go or spring boot
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build your backend, rest API and integrations in go or spring bootbuild your backend, rest API and integrations in go or spring bootbuild your backend, rest API and integrations in go or spring bootbuild your backend, rest API and integrations in go or spring boot

About this gig

Need an API your apps can rely on, or two systems that should talk to each other? I build backends and integrations in Go and Spring Boot, on PostgreSQL and Redis.


Recent work:

  • A Go module that speaks the protocol of ZKTeco fingerprint terminals, which I reverse-engineered, and feeds a client's internal ERP
  • - The Go backend of CLX, an esports platform: 82 REST endpoints, live updates over WebSockets and an audit log that detects tampering
  • - Account security for a SaaS used by about 400 companies: MFA, device-bound sessions and SSO with OIDC and SAML

What you get:

  • Clear endpoints with OpenAPI docs
  • - Authentication and permissions done right
  • - Retries and idempotency, so a repeated request is applied once
  • - Tests and a short guide to run and deploy it
  • - Source code in your repository

Good fits: payment or CRM integrations, webhooks, mobile app backends, internal APIs, connecting hardware or legacy systems.


Please message me before ordering with the systems involved and what should happen between them, so I can confirm the right package.

  • Expertise

    • Performance
    • Security
    • Databases

  • Programming language

    • Go

  • Frontend framework

    • Angular
    • React.js

  • Backend framework

    • Node.js
    • Spring Boot

Get to know Jean Benites

Jean Benites

Senior FullStack Developer

  • FromPeru
  • Member sinceAug 2025
  • Avg. response time1 hour

  • Languages

    English, Spanish
I'm a senior full-stack developer in Lima, Peru, with over 5 years building production web systems in Java/Spring, Angular, React, Go and Astro. I'm the main developer of a regulated B2B SaaS used by about 400 companies: I moved it from Java 8 to 21 and Angular 10 to 17 without stopping production, and added MFA and SSO with OIDC and SAML. I also founded CLX, an esports tournament platform I build alone in Go and React, and I'm co-founder and CTO of Tikraq, a custom software studio.

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