The Role
Tests and develops web features across frontend and backend systems, reviews AI-generated code, identifies root causes, validates fixes, and documents defects. The role includes testing AI functionality, monitoring web performance, collaborating with developers and project managers, and gradually contributing to internal tools and client development. Spanish and English fluency, JavaScript, modern frontend frameworks, backend knowledge, API testing, Git, Agile experience, and familiarity with AI assistants are required.
Summary Generated by Built In
We are seeking an enthusiastic and highly skilled Quality Assurance (QA) Developer to join our fast-paced and innovative digital marketing agency. As a key member of our dev team, you will work closely with our developer team to design, develop, and maintain backend systems that power the sites and applications of our clients.
Applicants must be fluent in Spanish and English (as interviews are in both languages). Please submit resume in English.
What You'll Do
- Work closely with our Technology Lead, IA Developers and UX/UI Design Lead to test and develop features.
- Review code produced with AI assistance before it reaches a client: check it does what the ticket asked, follows our conventions, and doesn’t contain invented APIs or bugs that look plausible at a glance.
- Work with our AI Developer to figure out how to fix it: what’s actually wrong, what the fix should be, and whether it risks breaking something else.
- Trace it to its cause — front-end, back-end or prompt — rather than stopping at the symptom, and see the fix through.
- Try to break our AI features on purpose, and document every case that works.
- Monitor Web Speed Optimization efforts after each release.
- Proactively report to our internal Project Manager and IA Developers and manage your schedule to ensure all deadlines are met.
- We’re hiring someone who wants to build, not only to fix. As you get comfortable, you’ll take on development tasks alongside the AI Developer on both internal tools and client features.
Who You Are
- Located in Europe — this position requires you to work in accordance with our Spain office’s working hours (10am-6pm CET)
- Must be fluent in Spanish and professional, working English.
- Around 1 year of experience in web development or QA.
- Able to read and write JavaScript, and comfortable around a modern framework (React or Vue).
- Working knowledge of HTML5 and CSS3, enough to spot layout, responsive and cross-browser issues.
- Understanding of back-end logic (PHP and/or Node) so you can follow a feature end to end.
- Experience testing REST or GraphQL endpoints.
- Experience working inside Git and in an Agile environment.
- Comfortable working with AI assistants as part of your workflow — writing good prompts, reviewing generated code critically, and knowing when not to trust the output.
- Any hands-on experience with LLMs, even personal projects.
- A keen eye for detail, interactivity and animation.
- A true team player who can work closely with others.
- Any hands-on experience with LLMs, even personal projects.
Perks and Benefits
- 15 observed holidays + 23 PTO days per year
- Indefinite contract following a trial period of 6 months
- Permanent remote work + work from home stipend
- Dedicated budget for professional development
- Compensated onsite retreats at our Bilbao HQ
- The opportunity to join a dynamic, close-knit team that loves going to work with and for each other every day
About Terra
Terra is a digital marketing and creative agency built by an integrated and international team of content creators, strategists, designers, and developers. We help organizations reimagine and deliver their most ambitious digital projects and initiatives by acting as an extension of our clients’ teams and delivering exceptional online experiences, content, and marketing strategies.
Our team is innovative, tech-forward, and creative by nature. We are dedicated to pushing boundaries and staying ahead of the curve in today’s ever-evolving digital landscape. We believe in the power of collaboration and foster a work environment that encourages creativity and growth. And with a strong focus on work-life balance, we prioritize the well-being and career development of our team members. Finally, we are committed to promoting from within and offering meaningful opportunities for professional growth.
Terra is also an equal opportunity employer.
We recruit, employ, train, compensate, and promote team members regardless of their race, religion, color, national origin, sex, disability, age, veteran status, or any other protected status (as required by applicable law).
Our top goal as an employer is to bring together a diverse mix of talented people who are excited to join our company, stay with Terra for a long time, and do their best work while they’re here. We take pride in the quality of the services and work we provide to our clients, and we know none of it is possible without the hard work and commitment of our passionate and creative employees.
Skills Required
- Fluent Spanish and professional working English
- Located in Europe and able to work Spain office hours from 10am to 6pm CET
- Around 1 year of web development or quality assurance experience
- Ability to read and write JavaScript
- Comfort with React or Vue
- Working knowledge of HTML5 and CSS3
- Understanding of backend logic using PHP and/or Node.js
- Experience testing REST or GraphQL endpoints
- Experience with Git and Agile environments
- Ability to work with AI assistants, write effective prompts, critically review generated code, and identify unreliable output
- Hands-on experience with large language models, including personal projects
- Strong attention to detail, interactivity, animation, responsive design, and cross-browser issues
- Ability to collaborate effectively as a team player
Am I A Good Fit?
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.
Success! Refresh the page to see how your skills align with this role.
The Company
What We Do
We use the power of genuine human connection to create compelling marketing, execute complex projects, and drive results for brands across B2B and B2C industries. Our culture prioritizes a hyper-collaborative environment that synthesizes the talent of over 50 designers, developers, writers, and strategists around the world, transforming great ideas into award-winning experiences. Start conquering the digital terrain today.
