Software Engineer, New Grad - Frontend

United States Digital Space LLC; Barcelona; Presencial; EUR 28.000 - 42.000; Jornada completa

Descripción de la vacante

United States Digital Space LLC in Barcelona is seeking a junior software engineer to join a fast-moving team that builds scalable systems. You’ll work across the stack using Java, Ruby, JavaScript, Scala, and Go to turn ambitious ideas into practical software.

The role emphasizes learning, collaboration, and the ability to tackle new problems with mentorship. You will contribute to projects with urgency and help shape code quality, reviews, and the responsible use of AI tools.

Formación

• Bachelor’s or Master’s degree in computer science or related field, by summer 2027, or equivalent experience.
• Experience with programming in Java, Ruby, JavaScript, Scala and Go.
• Experience from internships or teamwork on multi-person coding projects.
• Ability to learn unfamiliar systems via independent research and mentorship.
• Strong written communication to explain work to stakeholders and team members.
• Ability to leverage AI tools to accelerate development while ensuring code quality.

Conocimientos

Java

Ruby

JavaScript

Scala

Go

Programming experience

Clear written communication

AI tools proficiency

Educación

Bachelor’s or Master’s degree in computer science or related field

Descripción del empleo

Who we areAbout the company

the company is a technology company focused on improving the conditions for economic growth and prosperity. We build programmable financial infrastructure, rethinking from first principles how financial services should work, to make it easier and cheaper for any business to start and scale. More than 10 million businesses build on the company, spanning the economic frontier—from solo founders to established enterprises—united by a practical focus on growth. The most ambitious companies in the world use the company as core infrastructure to grow faster. They process trillions of dollars a year on the company, equivalent to around 1.6% of global GDP. While economic growth makes everyone better off, open markets also enable greater variety. When any business can easily serve a global customer base, the quality and diversity of products in the world increase, and craft and creativity are unleashed into the smallest niches. Our own growth is wholly contingent on the success of the businesses building on the company. We therefore invest back into our technology at an unusual rate. We make upgrades to our products every single day to deliver compounding gains to our customers. We maintain some of the most reliable APIs on the internet. We build entirely new pieces of financial infrastructure to enable new ideas. And our significant advances in risk and fraud infrastructure over many years are making the internet economy safer and more accessible.

Though people at the company don’t tend to take themselves seriously, the company is a fairly serious place: our customers are depending on us for their livelihoods. We admire ambition, intensity, curiosity, humility, and rigor. The most effective people become knowledgeable about many domains besides their own. Any company is an applied exercise in understanding some aspect of society or the market. In working with so many (especially the new and innovative ones), we think that the company is one of the very best places to learn about how the world works.

**Your role**

the company is large enough that individual products and projects can be rapidly deployed to a meaningful fraction of the world’s businesses, but small enough that individual agency still has outsized impact. Small teams can impact how millions of businesses grow. Right now the global economy is replatforming around AI, creating new opportunities for growth. We’re at the center of this, and we think the best work is still in front of us.

To meet this moment, we’re looking for people who move with urgency, like hard problems, and want their work to matter at a time of great change. If that’s you, there’s no better place to build your career.

Who you are

• Ambitious builder: You’re energized by building solutions without clear precedent and solving problems with far-reaching consequences. Successful Stripes are deeply curious, and prefer the joy of discovery to the comfort of certainty.
• Rigorous thinker: You appreciate that things worth doing are rarely simple. You enjoy working on problems that have never been tackled before.
• Adaptable problem solver: You adapt quickly and treat obstacles as opportunities. At the company we embrace kindness while encouraging Stripes to take measured risks and act boldly, even in the absence of consensus.

Minimum requirements

• A Bachelor’s or Master’s degree in computer science or a directly related field, obtained by summer 2027, or equivalent work experience; New grad candidates should have no more than 18 months of professional experience (excluding internship experience).
• Experience and familiarity with programming, either through side projects or classwork. We work mostly in Java, Ruby, JavaScript, Scala, and Go. We believe new programming languages can be learned if the fundamentals and general knowledge are present.
• Experience from either previous internships or working collaboratively on multi-person coding projects (in a university or professional setting).
• Ability to learn unfamiliar systems and form an understanding of those systems, through independent research and working with a mentor or subject matter experts.
• Clear written communication skills, with the ability to explain your work to stakeholders, team members, and other Stripes.
• Ability to leverage AI tools to accelerate development while applying rigorous critical thinking and professional judgement to review, refine, and validate all outputs.

Preferred qualifications

• One or more areas of specialized knowledge (frontend, backend, infrastructure or other technologies) balanced with general skills and knowledge.
• Experience in code review practices, and an understanding of how to safely update production systems.
• Familiarity with navigating and managing work in large code bases.
• Experience leading small projects independently, and contributing to larger projects alongside peers.
• Ability to operate with high agency in navigating complex technical obstacles independently, knowing precisely when to unblock oneself and when to ask for help.