Location & work modality: Rubí, Barcelona. Remote

Start: ASAP

Type of Contract: Full Time / Permanent

About Submer

The best way to introduce you to Submer is undoubtedly through our values: Sustainable, Unique, Bold, Making Sense, Empathetic and Reliable. If these resonate with you we're sure you will find your place here in no time.

At Submer, we believe that our digital world can be more sustainable, more efficient and more environmentally friendly. Submer is solving the biggest problems of datacenter, supercomputer, hyperscale and edge applications to make that future possible.

Our multinational talented team has a huge passion in reducing IT environmental footprint and expertise in datacenter design and day-to-day operations. We’re scaling our team and operations worldwide to meet growing international demand.

What impact you will have

An AI startup is seeking a skilled Go developer with strong understanding of server operations and Kubernetes to design and develop a control system interfacing with Kubernetes APIs to provision and manage containerized LLM workloads, ensuring scalability, load distribution, and persistent state management. Working alongside a dedicated Kubernetes infrastructure professional who will manage the cluster, you will focus on building a robust, Go-based control plane to automate provisioning, scaling, and monitoring.

What you’ll do

• Design and implement a Go-based Kubernetes control plane to manage containers.
  
• Write necessary unit and integration tests
  
• Optimize code for maintainability
  
• Document the codebase and provide operational handover to support long-term maintenance.

What you’ll need

• Education: College degree or equivalent experience
• Experience:
• 3+ years of software development experience, with at least 2 years in Go.
• 2+ years working with Kubernetes, including hands-on experience
• Experience with stateful applications, including persistent storage
• Experience in writing Kubernetes Controllers/Operators
• Experience with Kubernetes APIs and CRDs
• Familiarity with Kubernetes networking and load balancing
• Knowledge of monitoring systems (e.g., Prometheus, Grafana) and metrics integration with Kubernetes.
• Technical Skills:
• Proficient in Go for backend development, with expertise in concurrency and APIs.
• Proficient in Go error handling and resilience
• Knowledge of context-aware Go programming (timeouts, cancellation)
• Proficient in version control (Git) and CI/CD pipelines
• Proficient in integration and unit tests
• Knowledge of containerization (Docker) and microservices architecture.
• Knowledge of observability tools (distributed tracing, etc)
• Understanding of due security practices
• Strong knowledge of Linux

What we offer

• Attractive compensation package reflecting your expertise and experience.
• Restaurant Pass.
• Private Health Insurance.
• Languages classes (English).
• A healthy work environment with fresh fruits to energise and an on-site gym for active breaks.
• A great work environment characterised by friendliness, international diversity, flexibility, and a hybrid-friendly approach.
• You'll be part of a fast-growing scale-up with a mission to make a positive impact, offering an exciting career evolution.

Our Inclusive Responsibility

Submer is committed to creating a diverse and inclusive environment and is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, veteran status, or any other protected category under applicable law.