Mid-Senior Back-End Developer

At Borderless Software, we're looking for a Mid-Senior Back-End Developer to take part in the design and development of scalable, secure, and high-impact backend platforms. Would you like to join our team?

Your work setup

• 100% Remote
• Full-time
• Contractor

Language requirement

• English: C1 level or higher (required)
  
  

Some of your responsibilities

1. Back-End Development

• Design, develop, and maintain high-availability, scalable backend services.
• Implement complex, efficient, and secure business logic.
• Design and evolve REST and/or GraphQL APIs for high-traffic products.
• Optimize performance, concurrency, memory management, and response times.
• Actively participate in technical decisions and backend architecture definition.
• Ensure best security practices (authentication, authorization, data protection).

2. Architecture & Cloud

• Design and implement architectures based on microservices, serverless, and event-driven systems.
• Build solutions on AWS and Azure Functions.
• Define scalability, resilience, and fault-tolerance strategies.
• Collaborate with DevOps teams on observability, logging, and monitoring.

3. Databases & Integrations

• Design and manage data models in SQL and NoSQL databases.
• Optimize queries, indexes, and persistence strategies.
• Integrate external services and third-party APIs.
• Define clear and robust integration contracts between systems.

4. Quality, Delivery & Technical Leadership

• Promote and apply design best practices and architectural patterns.
• Actively participate in code reviews, automated testing, and technical documentation.
• Collaborate on CI/CD pipelines and deployment processes.
• Support releases, versioning, and post-production monitoring.
• Mentor junior developers and raise the technical bar of the team.

What we expect from you

Key technical requirements:

• Design, develop, and maintain high-availability, scalable backend services.
• Implement complex, efficient, and secure business logic.
• Design and evolve REST and/or GraphQL APIs for high-traffic products.
• Optimize performance, concurrency, memory management, and response times.
• Actively participate in technical decisions and backend architecture definition.
• Ensure best security practices (authentication, authorization, data protection).

Also:

• 5+ years of experience in Back-End development.
• Proven experience designing APIs and scalable architectures.
• Strong command of asynchronous and concurrent programming, performance optimization, and distributed systems design.
• Solid knowledge of security (OAuth, JWT, Identity Providers).
• Proficient use of Git, version control, and development best practices.
• Experience working with AI tools.

Nice to have

• Experience with microservices and event-driven architectures.
• Knowledge of Docker, Kubernetes, and CI/CD.
• Experience in observability, logging, and monitoring.
• Familiarity with other cloud platforms (GCP or Azure).
• Interest or experience in Blockchain and emerging technologies.
• Deep knowledge of SOLID principles, DDD, and Clean Architecture.

Ready to join our team? Apply now by completing the form, we'd love to meet you.