Our client is a company that offers dynamic ink solutions to enhance security and authenticity for physical and digital goods.
They ́re proudly multicultural—with roots in the U.S., India, Spain, and strong representation from Italy—bringing a global perspective to everything they do.
In 2023/24, they were selected for the Berkeley SkyDeck Accelerator, giving us access to Silicon Valley's premier talent and investor networks.Why Join Us Now?This is a defining moment in their growth.
They are actively building out our tech team,
and they're seeking a Senior Full Stack Developer who can take a leadership role from day one—with the clear path to become CTO within 2–3 years and join the company's leadership team.You'll be supported by an exceptional advisory board, including a veteran developer with 35+ years of experience at Microsoft and Alpha, who provides hands-on mentorship through weekly development calls.While they anticipate offering hybrid flexibility in the medium term, they're currently looking for someone excited to collaborate in-person 3–4 days per week at our co-working space.
This will be key as we shape our product, define our brand, and make critical early decisions.Requirements:Experienced: 5+ years in software engineering, with a proven track record of building scalable applications from scratch.International Experience, Spanish and proficient in English.Fast-paced companies, such as start-ups.Coding bootcamp are not enough, engineering would be more suitable.Focused on BackEnd not much FrontEnd, FullStack (API) also a bit mobile app.
Meaning that they need FullStack but more focused on BackEnd.Technical Requirements-Core Software Skills:Expert in Python (Flask, SQLAlchemy, Pandas) for backend and data processing.Proficient in JavaScript (React, vanilla JS, or similar)
for responsive frontends.Strong with RESTful APIs and microservices architecture.Have worked with Flutter mobile app developmentAI/ML Skills:Hands-on experience with image processing, OpenCV, object detection, and object classification.Cloud Expertise:Advanced skills with AWS (Lambda, API Gateway, DynamoDB, S3) or similar platforms (GCP, Azure).Data Engineering:Proficient in data pipelines, ETL processes, and tools like Apache Airflow or AWS Glue.Experience with NoSQL (DynamoDB) and SQL databases for structured/unstructured data.DevOps Basics:Skilled in CI/CD pipelines, Docker, and infrastructure-as-code (e.g., AWS CDK, Terraform)Pluses:Startup Veteran: Prior experience scaling fast-growth startups preferred—someone who's turned MVPs into market successes in high-velocity environments.AI/ML Driven:
Deep expertise in machine learning and image processing, eager to innovate in anti-counterfeiting tech.Data Savvy: Comfortable designing and managing data pipelines for real-time applications.Soft-skills:Communicator: Able to translate complex technical concepts into compelling pitches for non-technical stakeholders.BENEFITSIndefinite contract.Work hybrid: First year hybrid (60% in person), additional years more flexibility.
Office: Postal Code 08010 of Barcelona, where we take free coffee and water, flexible holidays and working hours.
Annual team retreats.22 vacation days/year.
Attractive salary conditions: 50-70k€ gross/year to negotiate at the last stage in function of proven experience + ESOPS.
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