Senior Software Engineer, Quantum Architecture & Practices

Qilimanjaro Quantum Tech; Barcelona; On-site; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Cobee flexible compensation

Flexible working hours

Strong mentorship and technical growth

Job summary

Qilimanjaro Quantum Tech, a Barcelona-based quantum computing company, seeks a Senior Software Engineer to design and build software for quantum hardware control, SDKs, and related tooling. You will be part of a hands-on team, turning architecture decisions into maintainable code and improving development workflows.

You will mentor colleagues, collaborate across departments, and contribute to scalable software initiatives in a fast-growing quantum startup in Barcelona.

Qualifications

• Hands-on software engineer role building software for quantum computing.
• Experience turning architecture decisions into tested, maintainable code.

Responsibilities

• Design and implement maintainable components, interfaces and migrations, documenting trade-offs and validating changes with technical owners.
• Collaborate with hardware-control software and SDK teams on shared architecture and tooling.
• Translate engineering practices into working examples and automated checks for tests, docs, dependencies and reviews.
• Improve workflows from need through implementation, verification and handover; mentor others.

Skills

Software design

Code maintenance

Mentoring

Cross-team collaboration

Architecture judgment

Experience with AI-assisted tooling

Job description

Qilimanjaro Quantum Tech, a Barcelona-based quantum computing company, seeks a Senior Software Engineer to design and build software for quantum hardware control, SDKs, and related tooling. You will be part of a hands-on team, turning architecture decisions into maintainable code and improving development workflows.

You will mentor colleagues, collaborate across departments, and contribute to scalable software initiatives in a fast-growing quantum startup in Barcelona.