Senior Backend Engineer (Go) — Scale High-Impact Systems

Titan Operating System; Barcelona; On-site; EUR 70,000 - 90,000; Full time

Benefits offered by this job

Private health insurance

Central Barcelona office location

Competitive compensation

Diverse and international environment

Job summary

Titan Operating System, based in Barcelona, seeks a Senior Backend Engineer - Go to design, develop, and maintain scalable backend infrastructure powering our products and services. You will ensure security, reliability, and performance while integrating cutting-edge technologies to support growing user demand.

You will collaborate with cross-functional teams, optimize server-side code, and contribute to robust data architectures using SQL/NoSQL databases and cloud platforms.

Qualifications

• 6+ years of professional backend engineering experience on large-scale systems.
• Proficiency in Go and RESTful API design.
• Experience with cloud platforms (AWS, GCP, or Azure) and containerization (Docker, Kubernetes).
• Strong knowledge of SQL and NoSQL databases and data architectures.
• Bachelor's degree in Computer Science or related field preferred.
• Strong communication skills and fluent English.

Responsibilities

• Designing and developing highly scalable backend services and APIs to support front-end applications and third-party integrations.
• Building and maintaining databases, ensuring data is stored securely and can be accessed efficiently.
• Collaborating with front-end developers, DevOps, and product teams to define and implement new features.
• Optimising the performance and reliability of server-side code to ensure seamless user experiences.
• Ensuring the security of backend systems through the implementation of best practices and security protocols.
• Writing clean, maintainable, and well-documented code, adhering to industry standards and team best practices.
• Monitoring and troubleshooting production systems, ensuring high availability and rapid response to issues.
• Participating in code reviews and contributing to the continuous improvement of development processes.

Skills

Go

English communication

Problem solving

Team collaboration

Education

Bachelor's degree in CS/SE

Tools

Docker

Kubernetes

AWS

GCP

Azure

REST APIs

SQL

NoSQL

Job description

Titan Operating System, based in Barcelona, seeks a Senior Backend Engineer - Go to design, develop, and maintain scalable backend infrastructure powering our products and services. You will ensure security, reliability, and performance while integrating cutting-edge technologies to support growing user demand.

You will collaborate with cross-functional teams, optimize server-side code, and contribute to robust data architectures using SQL/NoSQL databases and cloud platforms.