Senior Software Engineer, Multiverse Computing

Salary not provided

+ Signing bonus + Variable performance bonus

SQL

React

AWS

Docker

Python

Kafka

Prometheus

CUDA

Grafana

Next.js

PyTorch

loki

Senior and Expert level

Barcelona

More information about location

Quantum software for complex challenges

Be an early applicant

Quantum software for complex challenges

201-500 employees

B2BArtificial IntelligenceDeep TechMachine LearningSaaS

Be an early applicant

Salary not provided

+ Signing bonus + Variable performance bonus

SQL

React

AWS

Docker

Python

Kafka

Prometheus

CUDA

Grafana

Next.js

PyTorch

loki

Senior and Expert level

Barcelona

More information about location

201-500 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

Proven track record designing and implementing production-grade software running under real load
Solid grasp of clean architecture, separation of concerns, SOLID principles, testability and maintainability as first-class concerns
Experience with software design patterns and sound judgment on when (and when not) to apply them
Understands service-level architecture: API design, layered architectures, event-driven patterns, and how to structure code that outlives its author
Good grounding in software security principles: input validation, secret management, dependency auditing, container hardening, secure API design
Experience with containerized deployment fundamentals (Docker) and CI/CD concepts
Python with a modern JS framework (React/Next.js), SQL/NoSQL databases, messaging/event-streaming systems (Kafka, SQS), observability tooling (Grafana, Prometheus, Loki), distributed systems fundamentals, and AWS experience
Proposes solutions to unfamiliar problems: research first, presents alternatives with trade-offs, doesn’t wait to be told the answer
Breaks complex cross-repo issues into sequenced, followable steps
Acts as developer, mentor, and reviewer in the same sprint – writes production code, gives PR feedback to mid-level engineers, upholds review standards
Communicates technical risk clearly – surfaces blockers early with context
Comfortable with ambiguity and working under pressure; self-directed
Collaborates cross-functionally (MLOps, DevOps, Platform Engineering) without needing a manager to mediate
ECR, ArgoCD/Helm, structured CI/CD pipelines beyond basic Docker
Async long-running job orchestration patterns
CLI frameworks, Python packaging, Docker multi-stage builds
General comfort moving across CLI tooling → API services → infra glue

Desirable

ML & LLM Exposure
Exposure to PyTorch and/or HuggingFace Transformers (fine-tuning, inference, compression workflows)
Familiarity with ML infra concepts: training orchestration, experiment tracking, GPU job scheduling
Awareness of LLM techniques: distillation, quantization, pruning, inference serving
Some exposure to GPU-aware engineering (CUDA, mixed precision, multi-GPU) is a plus

What the job involves

Join a world-class team of Quantum and AI experts with an extensive track record in both academia and industry
Work with Fortune-500 customers from government and private sectors
Contribute to our groundbreaking compressing tool
Tackle high value open problems from industry
Take on technical leadership and work together with software and DevOps engineers as well as our machine learning and quantum experts to industrialize Multiverse’s core technologies

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.

Named on the 2025 CB Insights' List of the 100 Most Innovative AI startups, the company has clearly made an impact. Its raised considerable funding to strengthen its product and accelerate global growth, including from the Spanish government that hopes its support will shield strategic sovereignty in AI.

Kirsty

Company Specialist at Welcome to the Jungle

Insights

Glassdoor (3.7)

Company

Funding (last 2 of 11 rounds)

Feb 2026

$577.2m

SERIES C

Jun 2025

$218.2m

SERIES B

Total funding: $918.6m

Company HQ

Miramón-Zorroaga, Donostia-San Sebastian, Spain

Leadership

Enrique Lizaso Olmos

(CEO & Founder)

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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