Product Support Engineer, Multiverse Computing

AI/LLM, Fixed-Term Contract

€39-44.9k

+ Two unique bonuses: signing bonus at incorporation and retention bonus at contract completion

Python

Zendesk

JIRA

Mid and Senior level

Barcelona

More information about location

3+ days a week in office

Quantum software for complex challenges

Open for applications

Quantum software for complex challenges

101-200 employees

B2BArtificial IntelligenceDeep TechMachine LearningSaaS

Open for applications

€39-44.9k

+ Two unique bonuses: signing bonus at incorporation and retention bonus at contract completion

Python

Zendesk

JIRA

Mid and Senior level

Barcelona

More information about location

3+ days a week in office

101-200 employees

B2BArtificial IntelligenceDeep TechMachine LearningSaaS

Company mission

To bring quantum computing to society and use cases with great impact on society and on the technological wealth of the national and international territory.

Job

Company

Role

Who you are

Strong technical background with experience in troubleshooting APIs, SDKs, or software integrations
Familiarity with AI/ML concepts, particularly Large Language Models and model deployment
Proficiency in Python and experience with APIs
Excellent communication and problem-solving skills; able to explain technical concepts to non-technical users
Bachelor’s degree in Computer Science, Engineering, or related field; or equivalent practical experience

Desirable

Experience supporting AI/ML products or developer-focused platforms
Knowledge of model compression techniques and performance optimization
Contributions to documentation, tutorials, or developer community forums
Experience using ticketing and support tools (e.g., Zendesk, Jira, or similar)

What the job involves

Fixed-term contract ending in June 2026
We are seeking a proactive and technically skilled Product Support Engineer to join our team on a temporary basis (contract) and provide customer-facing technical support for our compressed Large Language Models (LLMs) and API services
You will be the first point of contact for technical inquiries, troubleshooting, and guidance, helping customers maximize value from our AI solutions. This is a unique opportunity to work with cutting-edge AI technology, ensure high customer satisfaction, and contribute to the success of a major new initiative
Become an expert in all Multiverse Computing’s products
Provide first-line technical support with a variety of complexity, from simple billing or account questions for individuals to complex, incident-level issues and debugging
Investigate and resolve customer-reported issues by reproducing problems and identifying root causes
Collaborate with engineering teams to escalate and resolve complex technical problems
Assist customers with API integration, usage, and best practices for performance and reliability
Document common issues, solutions, and best practices in a customer knowledge base
Communicate clearly and empathetically with customers, ensuring high satisfaction and trust
You’ll be working alongside world-leading experts in quantum computing and AI, developing solutions that deliver real-world impact for global clients

Application process

We are looking to fill this role immediately and are reviewing applications daily. Expect a fast, transparent process with quick feedback

Our take

Multiverse Computing is a company working on quantum and quantum-inspired computing solutions, addressing the limitations of traditional computing across finance, energy, manufacturing, and healthcare.

With its flagship products Singularity and CompactifAI, the company democratises quantum computing access, enabling professionals to leverage advanced algorithms for AI-driven optimisation and data compression without prior quantum expertise.

The company's had a successful 2025 too, first being named on the 2025 CB Insights' List of the 100 Most Innovative AI startups and then announcing a whopping $215M funding round. With this additional capital, the company is focused on strengthening CompactifAI, and further accelerating its name on a global scale.

Kirsty

Company Specialist at Welcome to the Jungle

Company

Funding (last 2 of 11 rounds)

Jun 2025

$219.9m

SERIES B

Mar 2025

$75.7m

GRANT

Total funding: $356.7m

Company HQ

Miramón-Zorroaga, Donostia-San Sebastian, Spain

Leadership

Enrique Lizaso Olmos

(Founder & CEO)

Founder of BlockTac and President of the 'Quantum for Quants' Commission at the Quantum World Association. Previously taught Statistical Methods for Engineering at the University of Vic - Central University of Catalonia.

Samuel Mugel

(CTO)

Mentor at the Creative Destruction Lab, and Scientific Advisor for the McKinsey Technology Council and Quantum World Association. Previously a Computational Physicist at Cortirio and a Technical Director at Quantum Ventures.

Alfonso Rubio-Manzanares

(CMO)

Partner and CEO at Entanglement Partners, as well as the General Manager at The Carrot Cake. They are also on multiple Advisory Boards, including greenYng, Ubiquat Technologies, and Ontek. Previously co-founded Ontek, Hubtype, and Cabier Institute.

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