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Kevin GonzalezKG

Kevin Gonzalez

Java Software Developer | Spring Boot

€111/day
Cuenca, ES
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Kevin

Hello 👋
I am a Backend Software Engineer specializing in Java and Spring Boot, with experience in microservices architecture and REST API development in demanding environments, especially in banking and utilities.

I propose two main service lines:

1️⃣ Development and optimization of APIs and microservices

I develop and evolve robust, scalable, and efficient backend services.
I also perform technical audits and deep performance optimizations.

Technologies and skills:
👉 Java (11/17/21), Spring Boot, Hexagonal Architecture, Microservices
👉 REST API (public and private), integration with external services
👉 PostgreSQL / MySQL / Oracle
👉 Docker, Jenkins, AWS
👉 JUnit, Mockito, Clean Code, SOLID Principles
👉 Observability, traces, and incident resolution in production

🧠 Demonstrated experience improving processes and algorithms by 35% to 60%, and resolving critical incidents by reducing diagnosis and recovery times.

2️⃣ Integration into agile teams for corporate projects

For medium or long-term projects, in full-time or part-time mode.

👉 Development of new functionalities, refactoring, migrations
👉 Technical design, documentation, releases, onboarding
👉 Direct collaboration with clients and multidisciplinary teams
👉 Agile methodologies (Scrum / Kanban)

💪 My focus in all projects:
security, performance, stability, maintainability.

I seek to provide real value and build solid, clear, and easily scalable backend services.

📩 Shall we talk about your project or technical need?
I am happy to collaborate and understand how I can help you.
  • Spanish

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Capgemini,
    Java Back-End Developer
    May 2025 - Today (1 year and 1 month)
    • Comprehensive management of technical incidents for banking systems in production (OpenBank & Santander).
    • Error analysis using AWS tools such as CloudWatch, ECS, SQS, etc., and diagnosis of performance and availability.
    • Resolution of errors directly or escalation to corresponding teams based on the affected module.
    • Participation in client meetings and on-call shifts for critical off-hours support.
    • Technical documentation of detected errors, applied solutions, and case tracking.
    SQL PostgreSQL Java Spring boot Docker
  • Capgemini,
    Java Back-End Developer
    January 2023 - December 2024 (1 year and 11 months)
    • Design and development of REST APIs under hexagonal architecture, improving system scalability.
    • Integration of external services and efficient data mapping to ensure consistency.
    • Implementation of schedulers for programmed tasks.
    • Direct interaction with the client for functional analysis and requirements gathering.
    • Generation of releases, review of pull requests, and maintenance of the agile workflow.
  • CAPGEMINI
    Java Developer
    TECH
    January 2023 - Today (3 years and 5 months)
    -Design and development of REST APIs using hexagonal architecture to ensure system scalability and modularity.
    -Implementation of clients for connection with external services and efficient data mapping to ensure information integrity.
    -Creation of schedulers for the execution of programmed tasks, optimizing system efficiency.
    -Close collaboration with clients to understand their specific needs and offer tailored solutions.
    -Generation of releases and review of pull requests to maintain an agile and high-quality development workflow.

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Education

  • Higher Level Vocational Training Cycle
    FOC
    2022

Certifications

  • Azure Fundamentals: AZ-900
    Microsoft
    2022

Skill set

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