I will fix bugs or develop custom backend services in go or java

J
juancanchi
J
juancanchi
Juan C
fix bugs or develop custom backend services in go or java
Full Screen
fix bugs or develop custom backend services in go or java

About this gig

Need a Senior Software Engineer to fix a critical bug, optimize performance, or add a powerful feature to your Go or Java backend? Look no further!


With over 6 years of experience engineering high-availability corporate systems, I specialize in building and maintaining robust architectures using Go (Golang) and Java. I solve complex technical bottlenecks and deliver production-ready code.


What I offer in this Gig:

- Bug Fixing & Debugging: Fast resolution of errors, memory leaks, and concurrency issues.

- RESTful API Development: Clean, scalable endpoints using Go (Goa Design, Gin) or Java (Spring Boot/Enterprise).

- Microservices & Messaging: Implementation and troubleshooting with RabbitMQ, SQS, and asynchronous event processing.

- Payment & API Integration: Secure integration of payment gateways (MercadoPago, International Credit Cards) and external APIs.

- Databases & Search: Query optimization and management for MySQL, MongoDB, and Elasticsearch.


Why hire me?

- Enterprise Experience: I manage production environments for large-scale platforms daily.

- Production-Grade Code: Clean, scalable, well-tested, and fully maintainable code.

- Fast Communication: Clear technical

  • Programming language

    • Java

  • Expertise

    • Debugging
    • Localization
    • Performance
    • Security
    • Design

  • Frontend framework

    • Angular
    • Bootstrap
    • Next.js
    • React.js
    • Vue.js

  • Backend framework

    • FastAPI
    • Fiber
    • Firebase
    • Spring Boot
    • Symfony

  • AI & low/no code builders

    • Claude
    • Cursor

Get to know Juan C

Juan C

Software Engineer Backend Developer

  • FromArgentina
  • Member sinceSep 2026

  • Languages

    Spanish
I am a software engineer with over 6 years of experience in backend development, specializing in Go, Java, and Python. I focus on applied AI solutions using AWS Bedrock and conversational bots, with solid experience in microservices and serverless architectures. I am proactive and analytical, with a proven ability to lead technical initiatives and migrate legacy systems to cloud infrastructure.

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