Jobs Companies Resilientco Sr. Backend Developer (Python/Java)

About this Sr. Backend Developer (Python/Java) role at Resilientco

Resilientco · Remote · Argentina

Summary

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
    Ready to apply to Resilientco?
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