Senior Fullstack Engineer, Lens

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.

Mirantis is looking for a highly skilled and passionate Senior Fullstack Developer to develop scalable software solutions that deliver exceptional user experiences. As part of the Lens team, you will contribute to the development of Lens, the leading IDE for Kubernetes developers, used by over 700,000 DevOps professionals globally. Lens is built on Electron and powered by modern technologies such as React, TypeScript, and Node.js. The Lens Cloud backends also leverage TypeScript and Node.js, ensuring a robust and scalable infrastructure.

You’ll be part of a cross-functional team that’s responsible for the full software development life cycle, from conception to deployment. As a Full Stack Developer, you should be comfortable around both front-end and back-end coding languages, development frameworks and third-party libraries. You should also be a team player with a knack for visual design and utility.

At Mirantis, we work with some of the latest tools, UI frameworks and a wide array of cutting-edge web technologies. We are looking for someone who is excited to try new things and enjoy technical challenges. The tools and technology we create should be as beautiful and easy to use as the world's best designed online services. Our microservice based backend architecture aims for highest availability and resilience to deliver a stable and reliable service to our amazing customers. 

Responsibilities:

Feature Development

• Develop new features for Lens Desktop and Lens Cloud services, working across front-end (React, Electron) and back-end (Node.js, TypeScript) systems. (https://k8slens.dev/)
• Implement visually appealing user interfaces, ensuring high usability and consistency with the Lens brand.

End-to-End Ownership

• Collaborate in all stages of the development lifecycle—from technical design and prototyping through implementation, testing, and deployment.
• Maintain and optimize existing codebases, addressing performance bottlenecks and improving overall reliability.

Collaboration & Communication

• Work closely with technical leads, product managers, and community developers to transform ideas into robust, maintainable implementations.
• Coordinate with cross-functional teams to ensure seamless integration, remove blockers, and solve complex technical challenges.
• Working with level 1 support engineers to help troubleshoot and resolve technical issues.

Quality & Best Practices

• Uphold coding standards by conducting thorough code reviews, writing automated tests, and maintaining comprehensive documentation.
• Adopt CI/CD pipelines, leverage error reporting and telemetry, and champion best practices to ensure the product’s scalability, resiliency, and security.

Continuous Innovation

• Explore, evaluate, and integrate new technologies, frameworks, and tools that could enhance product performance or developer experience.
• Serve as a mentor and knowledge resource for the team, sharing insights on best practices and emerging trends.

Community Involvement

• Engage with the Lens community, responding to feedback, reviewing contributions, and driving discussions around new feature ideas.
• Contribute to community events or Lens user meetups to showcase product updates and gather user insights.

Beneficial / Nice-to-Have

• Explore ways to integrate AI/LLM capabilities into Lens to enhance developer productivity.
• In-depth knowledge of HTTP(S) and proxying at the protocol level
• Understanding of cryptography and security

• 5+ years of software development experience, with a strong focus on full-stack web applications.
• Proficiency in React, TypeScript, Node.js and familiarity with Electron or similar desktop application frameworks.
• Solid understanding of cloud-native best practices—experience with Kubernetes or microservices is highly desirable.
• Understand and leverage common architectural styles and patterns around Microservices, 12factor-apps and cloud-native app development
• Demonstrated track record building scalable, maintainable, and high-quality applications in agile environments.
• Strong knowledge of RESTful API design, including performance optimization, security, and reliability considerations.
• Familiarity with large language models (LLMs) and experience integrating AI frameworks or APIs (e.g., OpenAI, AWS Bedrock,...) into web applications or developer tools is beneficial.
• Understand and apply quality techniques and practices (automated unit testing, performance analysis, telemetry and error reporting, continuous integration)
• Problem-solving mentality with the ability to quickly learn and apply new technologies.
• Passion for clean, maintainable code and an appreciation for great design principles.
• Eye and appreciation for great design, High standards for usability.
• Strong problem solving skills
• Excellent communication and teamwork skills; comfortable collaborating with diverse teams and external community contributors.
• Self-driven and proactive in seeking ways to improve workflows, systems, and user experiences.

Why Join Team Lens at Mirantis?

• Work with world-class engineers, product, and design teams in a fast-paced, impact-driven environment.
• Flexible remote work within the EU or the option to work from our Helsinki hub.
• Join a company that values user experience, community engagement, and an open-source ethos at its core.
• Receive a competitive compensation package with strong benefits plan.

If you’re passionate about building best in class developer tools—we want to hear from you! Apply today!

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)!

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