Senior Software Engineer (Backend, MSR4)

Mirantis • Sofia, Bulgaria • 3d ago

Company Description

About Mirantis

Mirantis is the Kubernetes-native AI infrastructure company, enabling organizations to build and operate scalable, secure, and sovereign infrastructure for modern AI, machine learning, and data-intensive applications. By combining open source innovation with deep expertise in Kubernetes orchestration, Mirantis empowers platform engineering teams to deliver composable, production-ready developer platforms across any environment—on-premises, in the cloud, at the edge, or in sovereign data centers. As enterprises navigate the growing complexity of AI-driven workloads, Mirantis delivers the automation, GPU orchestration, and policy-driven control needed to manage infrastructure with confidence and agility. Committed to open standards and freedom from lock-in, Mirantis ensures that customers retain full control of their infrastructure strategy.

Job Description

We are looking for an experienced Senior Software Engineer (Backend) to MSR4 product team.
Mirantis Secure Registry (MSR) 4 is an Enterprise-grade container registry solution that can be integrated easily with standard Kubernetes distributions to provide tight security controls for cloud native development. Based on Harbor, which is open source and the only CNCF graduated container registry, this Mirantis product can serve as the core of an effective secure software supply chain.

MSR Documentation - https://docs.mirantis.com/msr/4.13/

Main Responsibilities

Design, architect, implement, review, and test frameworks, libraries, tools, and services primarily using Go.
Participate in requirement, design, planning, and retrospective meetings as an integral part of an Agile software development team.
Contribute to successful sprints by implementing items contributing to overall team goals.
Act as a subject matter expert and evangelist within the company and broader community.
Be an active maintainer of Mirantis projects by managing contributions and patches to open-source projects, reviewing submissions, and participating in design decisions.
Participate in product discussions, influence the roadmap, and take ownership and responsibility over new projects to make them happen.
Be the technical reference to external partners and in-house engineering teams, provide support by sharing knowledge and/or taking on the development effort.
Contribute to testing via automation and test plan reviews to prevent bugs from entering the product and eliminate regressions, ensuring a quality product every build.
Ensure that MSR continues to be a first-class and indispensable part of diverse customer solutions, working seamlessly with existing systems including popular orchestrators and other industry-standard components.

Qualifications

Qualifications and Experience Requirements

Bachelors or Masters degree or equivalent in computer science or a related subject
Debugging: Particularly multi-process, orchestrated, distributed systems
Knowledge of the creation and use of containerization, Kubernetes, and Registries (Harbor preferred)
5+ years development experience in a Linux or other Unix-like environment
3+ years of experience with Go programming language or any other modern programming language that builds applications to production

Preferred Extras

Contributions to open-source Kubernetes or Go tooling projects.
Certifications such as CKA, CKAD, or DCA.
Experience with additional languages: Shell scripting, Python
Experience with container registries (Harbor/MSR), OCI specs, Docker and/or Swarm.

Additional Information

What does Mirantis offer you?

Work in a global, collaborative, remote-first culture that rewards initiative and execution.
Play a pivotal role in shaping the next era of cloud and AI modernisation.
Manage high-impact enterprise accounts with immediate opportunity for growth.
Work with exceptionally passionate, talented and engaging colleagues, helping Fortune 500 and Global 2000 customers implement next-generation cloud technologies.
Be a part of cutting-edge, open-source innovation.
Thrive in the high-energy environment of a young company where openness, collaboration, risk-taking, and continuous growth are valued.
Professional development and training.
Attend conferences and working groups.
Customized workstation (macOS, Windows).
Competitive compensation, performance incentives, and opportunities for advancement.

It is understood that Mirantis, Inc. may use automated decision-making technology (ADMT) for specific employment-related decisions. Opting out of ADMT use is requested for decisions about evaluation and review connected with the specific employment decision for the position applied for. You also have the right to appeal any decisions made by ADMT by sending your request to [email protected]

By submitting your resume, you consent to the processing and storage of your personal data in accordance with applicable data protection laws, for the purposes of considering your application for current and future job opportunities.

We are a Leader for Container Management in G2 (#2 after AWS)!

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