Resilient Co.

Sr. Backend Developer (Python/Java)

Resilient Co.  •  Argentine Republic (Onsite)  •  4 hours ago
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Job Description

We are seeking a Senior Backend Developer (Python/Java) to join our platform engineering team and build enterprise-grade backend services that process large volumes of data and support mission-critical operations. This role focuses on designing and implementing highly scalable, high-performance microservices and APIs using primarily Python (approximately 70%) complemented by Java (30%), with a strong focus on Kubernetes-based deployments and operations.

The role offers ownership across the full software lifecycle—architecture, development, testing, deployment, performance tuning, and production support—within cloud-native and containerized environments. This is an opportunity to shape platform reliability, scalability, and operational excellence.

Responsibilities

  • Design, develop, and maintain highly scalable backend services and enterprise applications using Python and Java.
  • Build high-performance solutions capable of processing and managing large-scale datasets.
  • Develop and maintain RESTful APIs and microservices integrations with internal and external systems.
  • Design software architectures that prioritize reliability, scalability, security, and operational efficiency.
  • Optimize application performance, troubleshoot production issues, and implement proactive monitoring.
  • Implement automated testing, CI/CD pipelines, and infrastructure management practices.
  • Deploy and operate containerized applications using Kubernetes, collaborating on orchestration and runtime configuration.
  • Participate in code reviews and promote engineering best practices, coding standards, and quality assurance processes.
  • Collaborate with architects, product owners, DevOps engineers, and business stakeholders to deliver platform features.
  • Support production environments to ensure system availability, resiliency, and performance.
  • Contribute to continuous improvement initiatives focused on platform modernization and operational excellence.

Requirements

  • Bachelor’s degree in Computer Science, Information Technology, Engineering, or equivalent practical experience.
  • 7+ years of software engineering or platform engineering experience.
  • Strong hands-on development experience with Python (primary language) and Java.
  • Experience building and supporting large-scale distributed systems.
  • Expertise developing RESTful APIs and microservices architectures.
  • Strong hands-on experience with Kubernetes, including production deployment, orchestration, and runtime management of containerized applications.
  • Experience with CI/CD pipelines and DevOps practices.
  • Experience working with high-volume data processing systems and enterprise integrations.
  • Strong understanding of software design patterns, scalability principles, and performance optimization techniques.
  • Experience with modern source control and collaborative development practices.
  • Excellent analytical, troubleshooting, and problem-solving skills.*

Nice to Have

  • Experience with Angular.
  • Experience with PostgreSQL.
  • Experience with Docker and Helm Charts.
  • Experience with Keycloak, OpenSearch, or Fluent Bit.
  • Experience with Ansible.
  • Familiarity with cloud-native application development and Infrastructure as Code (IaC).
  • Experience with logging, monitoring, and observability platforms.*

Engagement & Logistics

  • Engagement Length: 12 months or more
  • Time Zone: PST - 8:00 AM - 5:00 PM
  • Laptop: BYOD.
  • Overtime Required: No.
  • Holidays Calendar: Client Holidays (USA – Mandatory)
  • Selection process

    1. Meeting with Resilient Co. team.
    2. Client technical interview
    3. Project interview (Cultural fit and tech review)
    4. Final stage
    Resilient Co.

    About Resilient Co.

    WE ARE RESILIENT CO.

    The world of technology is constantly changing and, to be able to face it, you have to be prepared. We know this because we have been in this business for many years and we created Resilient Co because we understand that, in order to move forward, you have to be fast, efficient and above all, resilient.

    We want to apply our resilience to your projects. We are the ally that helps you stand out and we want to be part of your team.

    Just worry about the business, while we take care of the human factor.

    We are Resilient Co and we are prepared for the future.

    Industry
    HR & Recruiting
    Company Size
    11-50 employees
    Headquarters
    Barcelona, ES
    Year Founded
    2020
    Social Media