JR-187434 Full stack Developer Senior

Customertimes Corp.; España; On-site; PHP 4,822,182 - 7,233,273; Full time

Benefits offered by this job

100% remote opportunity

Flexible work environment

Opportunities for professional growth

Paid time off

Job summary

Customertimes Corp. is looking for a Senior Full-Stack Python Developer to join our engineering team. The role involves designing and developing scalable applications using Python and Flask, as well as building modern frontend applications with React, TypeScript, Redux, and React Query.

This position offers a remote-first environment with flexible working hours and opportunities for professional growth. Ideal candidates will have over 5 years of experience in software engineering along with strong backend and frontend development skills.

Qualifications

• 5+ years of professional experience in software engineering.
• Hands-on experience with Flask or similar Python web frameworks.
• Solid understanding of SQLAlchemy and relational databases, particularly PostgreSQL.
• Strong frontend development skills with React, TypeScript, Redux, and React Query.

Responsibilities

• Design, develop, and maintain scalable backend services using Python and Flask.
• Build and enhance modern frontend applications using React, TypeScript, Redux, and React Query.
• Develop and support microservices communicating through gRPC protocols.
• Deploy, monitor, and maintain services running in Kubernetes environments.
• Work with AWS services such as S3, RDS, and SQS to build reliable cloud-native solutions.

Skills

Python

Flask

SQLAlchemy

PostgreSQL

gRPC

React

TypeScript

Redux

React Query

Kubernetes

AWS

Grafana

Observability tools

Job description

We are looking for a Senior Full-Stack Python Developer to join a highly skilled engineering team working on scalable, cloud-based applications within a microservices architecture. The ideal candidate will be comfortable working across both backend and frontend development, contributing to the design, implementation, deployment, and maintenance of modern distributed systems.
This role offers the opportunity to work on business-critical applications, collaborate with experienced engineers across multiple time zones, and contribute to the continuous improvement of engineering practices and system reliability.

• Remote-first team with flexible working hours.
• Low number of scheduled meetings (typically 1–2 per day).
• Collaborative engineering culture with a high level of ownership.
• Opportunity to work across multiple products and expand technical expertise.
• Cross-functional collaboration with Product, Design, and Engineering teams.

Locations

• Bulgaria
• Poland
• PortugalMexico
• Colombia

Requirements

• 5+ years of professional experience in software engineering.
• Hands-on experience with Flask or similar Python web frameworks.
• Solid understanding of SQLAlchemy and relational databases, particularly PostgreSQL.
• Experience designing and supporting microservices architectures.
• Practical experience with gRPC communication between services.
• Strong frontend development skills with React, TypeScript, Redux, and React Query.
• Experience deploying and maintaining applications in Kubernetes environments.
• Experience working with AWS services such as S3, RDS, and SQS.
• Familiarity with monitoring and observability tools including Grafana, Honeycomb, or similar platforms.
• Strong problem-solving skills and ability to work independently.
• Experience working in distributed international teams.
• English level: Upper-Intermediate (B2) or higher.

Job Responsibilities

• Design, develop, and maintain scalable backend services using Python and Flask.
• Build and enhance modern frontend applications using React, TypeScript, Redux, and React Query.
• Develop and support microservices communicating through gRPC protocols.
• Design and optimize database interactions using SQLAlchemy and PostgreSQL.
• Deploy, monitor, and maintain services running in Kubernetes environments.
• Work with AWS services such as S3, RDS, and SQS to build reliable cloud-native solutions.
• Monitor system performance and troubleshoot issues using Grafana, Honeycomb, and similar observability tools.
• Investigate production incidents, perform root cause analysis, and implement preventive solutions.
• Collaborate with engineers to design secure, scalable, and highly available systems.
• Participate in code reviews, technical discussions, architecture decisions, and engineering improvements.
• Contribute to CI/CD processes and deployment automation.

Nice-to-Have

• Experience in the Health Insurance industry is highly desirable and would help accelerate onboarding; however, it is not a mandatory requirement.
• Experience in healthcare-related products or regulated environments.
• Experience with AWS infrastructure and cloud architecture best practices.
• Experience building highly available and fault-tolerant systems.
• Knowledge of CI/CD pipelines and GitHub-based workflows.
• Exposure to event-driven architectures and message queue systems.

What We Offer

• 100% remote opportunity;
• Flexible work environment (in-office, remote, or hybrid depending on preferences and manager approval);
• Opportunities for professional growth and career advancement;
• Collaborative and innovative work environment;
• Paid time off, including holidays, vacation and sick leave;
• Benefits may vary by location and will be confirmed during the interview process.