Senior Back-end Developer; Golang
Publicado en 2025-12-24
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Desarrollo de Software
Desarrollador/a Back-end, Ingeniero Cloud, Desarrollador/a Golang, Desarrollador Senior
Join to apply for the Senior Back End Developer (Golang) role at Fast Track
Join to apply for the Senior Back End Developer (Golang) role at Fast Track
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We are expanding our Tech team with Senior Back-end Developers based in our office in Barcelona!
Fast Track is growing its development team in Barcelona at a rapid pace! We are currently looking for high-performance individuals who enjoy working with back-end development. We are using Golang as our main back-end language with great success.
As a Senior Back-end Developer at Fast Track, you’ll play a key role in designing and scaling cutting-edge microservices to support our high-traffic, high-performance environments. Our development team is rapidly growing, and we’re looking for passionate individuals who thrive in a dynamic, fast-paced environment and enjoy solving challenging technical problems. We leverage Golang as our primary back-end language, focusing on delivering robust and scalable microservices.
As a Senior Back-end Developer at Fast Track, you will be focused on delivering :
Build and Lead Scalable Solutions
- Design, develop, and maintain robust, scalable microservices to handle significant traffic volumes with speed and reliability.
- Leverage Golang and other technologies to deliver high-performance backend systems.
API Design and Optimization
- Create advanced back-end APIs to enhance our solution’s functionality and scalability.
- Ensure APIs align seamlessly with front-end and mobile systems for smooth data flow.
Testing and Quality Assurance
- Establish and maintain comprehensive testing strategies, including unit, integration, and load tests.
- Uphold rigorous coding standards and maintain robust documentation for system reliability.
Performance and Cost Optimization
- Continuously monitor and enhance system performance, particularly Kubernetes and load balancers.
- Address bottlenecks and improve the efficiency of applications and infrastructure.
Collaboration and Mentorship
- Work closely with cross-functional teams, including Cloud Ops and Site Reliability Engineering, to drive innovation and improvements.
- Mentor team members, fostering a culture of learning and excellence.
End-to-End Project Leadership
- Take ownership of projects, from ideation to delivery, ensuring timelines and objectives are met.
- Implement and advocate for best practices in software design and architecture.
Job requirements
- A minimum of 5 years of professional experience in backend development, with a proven track record of successful projects
- Strong experience in Golang is highly desirable, along with proficiency in other programming languages used in our stack.
- Demonstrated ability to mentor developers, sharing knowledge, and fostering a positive learning environment.
- A commitment to quality and a deep understanding of user needs, aiming to deliver exceptional solutions that users love.
- A passionate learner who actively seeks out the latest industry trends, best practices, and technologies. Willingness to lead internal workshops and training sessions.
- Exceptional leadership abilities, capable of driving projects forward, making strategic decisions, and inspiring team members towards achieving common goals.
- Ability to independently navigate complex challenges and contribute strategically to the company's long-term goals.
- Advanced degrees or certifications in computer science or related fields, along with a portfolio of personal or open-source projects, are a plus.
- Strong communication skills in English, and can convey complex ideas in simple terms
- Self-starter with a ‘can-do’ attitude who works well within a fast-paced environment
- Team player, bringing energy and positivity to our awesome team!
At Fast Track, we provide a dynamic environment for high-performance individuals who are ready to elevate their skills. Our tech stack is cutting-edge and constantly evolving. We utilise continuous integration and deployment with Git Hub Actions, incorporating relevant workflows and approval processes. Our code runs on Docker with Kubernetes orchestration, and all our infrastructure is managed with…
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