Design Engineer & Senior Engineer

MITO AI Location: Madrid (Hybrid)

About MITO

MITO is the AI-native platform for collaborative video creation. We are building the future of video production, enabling brands, agencies, and creators to produce iconic content at scale, faster, and 20x cheaper than traditional methods. Our platform is built on three pillars:

MITO Films:

Our AI-native studio where we create campaigns for top global brands, validating our technology and setting the quality standard. MITO Orchestration Tools:

An infinite, collaborative canvas with a node-based system that allows creators to plan, script, and produce videos in a visual and iterative way, connecting with any AI model (video, image, text, audio). MITO Universe:

A community and marketplace for creators to share assets, workflows, and portfolios, fostering an ecosystem of talent and creativity.

We are backed by top-tier investors and led by an exceptional founding team:

Iñaki Berenguer

, PhD - Co-CEO: Serial entrepreneur with 3 successful exits including CoverWallet ($100M revenue, acquired by Aon for $300M), Pixable (acquired by SingTel), and Contactive (Fuze). Founder and President of iPronics ($50M raised), Partner at LifeX Ventures. Ex-McKinsey & Microsoft Strategy. PhD Cambridge, Fulbright Columbia, MBA MIT. Arantxa Barcia

- Co-CEO: Expert in creative direction in fashion and advertising, with a focus on editorial aesthetics and emotionally-driven brand vision. Leads MITO's narrative and visual consistency. Danny Saltaren

- CPO: Founder of Modulor (design holding with €8M+ in revenue), former Head of Product Design at 2 unicorns (Jobandtalent, Fever), led the redesign of Inditex Online. National Design Award recipient from the King of Spain.

We are looking for our first engineer to join as a founding member and help us build the platform that will revolutionise the video industry.

Your Mission We’re looking for

one of our earliest engineers

to help build the platform that will redefine video production. You’ll join the engineering team at a pivotal moment — when decisions and contributions still have massive impact. This is not just executing tasks. You’ll have real ownership across the stack and help shape the product from its earliest versions. Your mission will be to transform our vision into a robust, scalable platform that our users will love.

What you'll do Design and Build: You will lead the development of our platform, from the canvas-based frontend to the AI model orchestration backend. Solve Complex Challenges: You will tackle unique technical challenges in generative AI, real-time collaboration, and video workflows. Define the Tech Stack: You will make key decisions about the architecture and technologies we use to build a world-class product. Collaborate with Product and Design: You will work in a multidisciplinary team to iterate quickly and deliver features that provide real value to our customers. Build Culture: You will help lay the foundation of our engineering culture, promoting best practices, quality, and innovation.

What we're looking for Entrepreneurial Spirit: You are proactive, a problem-solver, and eager to build something big from scratch. You are comfortable with uncertainty and motivated by the direct impact of your work. Technical Excellence: You have a strong foundation in software engineering and experience building complex products. We care less about the specific languages you know and more about your ability to learn and adapt. Pragmatism: You know how to balance technical quality with speed of execution. You understand that in a startup, there are always fires to put out, and you know how to prioritise. Product Passion: You are obsessed with creating amazing user experiences and are involved in the entire product lifecycle, from ideation to deployment. Communication Skills (mainly in English): You can communicate your ideas clearly and constructively to both technical and non-technical team members.

Requirements

Technical Skills Object-Oriented Programming & Architecture:

Strong experience with OOP languages and building clean, modular, and scalable architectures. Engineering Best Practices:

Proven track record of implementing and maintaining CI/CD pipelines, and writing high-quality automated tests (unit, integration, and end-to-end) to ensure fast, reliable delivery. Frontend expertise

: Extensive experience with NodeJS ecosystem, TypeScript and React. Experience building scalable component systems around state management, and an eye for design, performance and scalability. APIs:

Skilled in designing and scaling REST APIs. Containerization & Operating Systems:

Proficient with Docker and Linux, including containerized development workflows and debugging. Emerging Technologies:

Experience or strong interest in generative AI, large-language-model ecosystems (LLMs), LangChain, RAG pipelines, and agentic architectures.

Work Style Rapid Prototyping:

Ability to quickly build functional prototypes and iterate based on feedback — balancing experimentation with product thinking and technical rigor. High Ownership:

Experience working in high-impact, high-autonomy environments such as startups or small product teams, where initiative and accountability matter. Remote culture

: Accustomed to asynchronous communication, taking initiative, asking questions early and to collaborate closely across disciplines.

Nice to Have Backend:

Experience with Java and Spring Boot, and relational databases such as Postgres or MySQL. Infrastructure:

Knowledge of cloud platforms (AWS or Google Cloud) and Infrastructure-as-Code tools such as Terraform.

What we offer Ownership & Compensation:

You won’t just help build MITO — you’ll own a real piece of it. We offer a generous equity package paired with a competitive salary so your growth is directly tied to the company’s growth. A Huge Challenge:

Join at a moment when the product and category are still being defined. You’ll help shape a platform that has the potential to transform a $100B industry. Impact & Autonomy:

You’ll have the freedom — and responsibility — to make key product and technical decisions that influence the direction of MITO from day one. Flexibility:

We believe the best work happens with trust. Work from our office in Madrid, or remotely most of the time through our hybrid model.

If you are passionate about technology, eager to take on an ambitious challenge, and build the future of video creation, we want to meet you!