Fullstack Software Engineer - Quantum Platform

At planqc, we are building scalable quantum computers based on neutral atoms. Making this technology accessible to users requires a robust software platform that connects quantum hardware, simulators, and cloud-based applications. As a Fullstack Software Engineer - Quantum Platform , you will help develop the software that enables researchers and industry partners to interact with planqc’s quantum computing systems. Your mission is to build and maintain the platform components that connect our hardware and simulators with user-facing applications and services. Working across the full software stack, you will contribute to developing backend services, APIs, and frontend interfaces that support reliable and scalable access to quantum computing resources. By collaborating closely with our hardware, algorithm, and software teams, you will help ensure that advanced quantum technology can be accessed through intuitive and robust software systems. This role is ideal for engineers who enjoy working across backend services, web applications, and distributed software systems, and who are motivated by contributing to the infrastructure that enables real users to explore and apply quantum computing. We actively invest in AI-assisted software development and encourage engineers to use and experiment with tools such as Claude Code, GitHub Copilot, and other coding agents. We want our engineers to learn how to use these tools effectively while maintaining strong engineering judgment, code quality, and ownership.

What characterizes you

• You are a collaborative team player who enjoys working across disciplines and organizations.
• You take ownership of your work and are motivated to contribute to impactful engineering projects.
• You are curious about quantum technologies and emerging computing paradigms .
• You approach technical challenges with pragmatism and a strong focus on quality .
• You value clear communication, knowledge sharing, and constructive feedback within a team.

What you'll do

• 01 Develop new features and tests for platform software components.
• 02 Design and evolve interfaces and distributed services for submitting, scheduling, and managing quantum computing workloads.
• 03 Contribute to the design, implementation, testing, and maintenance of software supporting planqc’s quantum computing systems.
• 04 Implement and maintain backend and frontend components to support scalable and user-friendly applications.
• 05 Improve code structure, readability, performance, and reliability to maintain production-quality software.
• 06 Support the integration of platform services into planqc’s broader software stack, ensuring stable and efficient system operation.
• 07 Follow modern software engineering practices including version control, code reviews, automated testing, and documentation.
• 08 Document software components and features consistently during development.
• 09 Collaborate closely with team members and share knowledge across the engineering organization.
• 10 Continuously expand your understanding of new technologies and the fundamentals of quantum computing systems.

What they're looking for

• 3+ years of experience in professional software development.
• Degree in Computer Science, Engineering, Physics, or a related technical field.
• Proficiency in two or more programming languages, such as Python, TypeScript, Rust, C++, C, or Java.
• Experience building backend services in Python using frameworks such as FastAPI, Flask, or Django, and web applications in TypeScript using frameworks such as React or Vue.
• Experience working with ORMs and relational databases, combined with a good understanding of SQL.
• Familiarity with CI/CD workflows, unit testing, and version control (Git).
• Hands-on experience with containerization technologies such as Docker.
• Strong motivation to learn new technologies and continuously improve your engineering skills.
• Ability to work effectively in a collaborative, team-oriented environment.

Nice to have

• Experience with AI-assisted software development tools such as Claude Code or other agentic coding tools.
• Experience with Domain-Driven Design or other approaches to structuring complex software domains.
• Contributions to open-source projects or personal technical software projects.
• Experience with container orchestration platforms such as Kubernetes.
• Familiarity with quantum software frameworks such as Qiskit, Cirq, or PennyLane.

planqc is a German neutral-atom quantum computing company built on research from the Max-Planck-Institute for Quantum Optics. Its technology uses individual atoms confined in crystals of light as qubits, and the company has demonstrated scaling of neutral atoms to 1,200 qubits.

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