Full Stack Developer Senior

Job description

Hi
At Shakers, we're on the lookout for a Full Stack Dev Senior to take our Product Team to the next level in Valencia or Madrid

• Team and Role

If you have experience in Developing
*reliable services based on and *
, thrive in a dynamic startup environment, and are ready to take your career to the next level, we want to hear from you.

This role offers the opportunity to build a marketplace using the latest technologies, with the chance to shape the next generation way of working.

If you're excited by the prospect of
working in a fast-paced, innovative environment, collaborating with a talented team, and making a direct impact
, this is the opportunity for you

• What you´ll be doing

Your day-to-day as a
FullStack Developer
:

• Service & API Development: Architect, build and maintain scalable, reliable backend services in (e.g. NestJS) and server-side applications with
• Microservices & Event-Driven Systems: Design and implement microservices architectures and event-driven pipelines (Kafka or similar), ensuring loose coupling, high performance, and resilience.
  
  
• Frontend Collaboration: Partner with UI/UX designers to build responsive, high-quality pixel-perfect frontends using React, Vue, or Angular, and integrate with our RESTful and GraphQL APIs.
• Performance & Quality: Optimize load times, bundle sizes, and user interactions.
  
  
• Agile & DevOps: Champion our Shakers Agile methodology—own your GitLab workflow, write tests, enforce CI/CD best practices, and automate where it makes sense (AWS EC2/S3/CloudFront/Lambda).
  
  
• Architecture & Quality: Apply Hexagonal Architecture, Domain-Driven Design (DDD), Clean Code, and SOLID principles to ensure a maintainable codebase.
  
  
• Security & Compliance: Implement authentication/authorization (JWT, OAuth), enforce data protection, and integrate code-quality/security tools (SonarQube).
  
  
• What we´re looking for

You´re a great fit if you...

• Experience: 4+ years of professional development experience—we're looking for real, on-the-job product work, not internships or bootcamps.
  
  Bonus if you've shipped features at another product-focused company.
  
  

• Education: Bachelor's degree in Computer Science, Telecommunications Engineering, Mathematics or a closely related STEM field.
  
  

• Technical Expertise: Real experience building full stack applications with , , Vue/Angular, or similar.
  
  We also accept.
  
  

• Proven experience designing RESTful APIs, microservices, and event-driven systems (Kafka).
  
  

• Hands-on with Hexagonal Architecture, DDD, SOLID, and Clean Code practices.
  
  

• Familiarity with AWS services (EC2, S3, CloudFront, Lambda).
  
  

• Quality & Security Mindset:

• Strong understanding of web security best practices (authentication, authorization, data encryption).
  
  

• Experience with quality and security tooling (JWT, OAuth, SonarQube, Kiuwan).
  
  

• Startup & Collaboration:

• Highly proactive—more than just executing specs, you'll propose improvements, optimize performance, and drive scalability.
  
  

• Excellent communicator and team player, comfortable working in a lean, agile environment.
  
  

• Results-oriented, self-managed, and adaptable to shifting priorities.
  
  

• Passion & Fit:

• A genuine love for coding and continuous learning.
  
  

• Comfort in a fast-paced, high-traction startup culture.
  
  
• A mindset of ownership—you take pride in delivering rock-solid, user-focused products.
  
  
• What's in it for you?
  
  

Compensation

The salary range for this position is between 35.000€ and 51.750€ OTE (on target earnings) gross annual salary.

The salary consists of:

• Between 35.000€ & 45.000€ fixed salary
• Up to 6.750€ quarterly bonus based on performance & potential and Shakers global results (15%)

Why you´ll love working at Shakers

• Be part of a rapidly growing, internationally expanding startup.
  
  
• Have an ambitious professional development plan to help you reach your full potential.
  
  
• Enjoy an unbeatable team culture—ask anyone on our team
• Take advantage of our hybrid ful flex methodology: a mix of remote and in-office work, with our office located in the heart of Valencia, CORE building (Plaza Legión Española).
  
  
• Perks include wellness programs, gym access, English classes, medical insurance, and more.
  
  

At the office...

• Organic fruit
• Free caffeine and theine
• Our recruitment process

As a startup, we are very agile and we like to see results quickly, which is why
prioritize efficiency in our recruitment process.
Our goal is to have you onboard this march, so you can hit the ground running and make an impact from day one

The Road to Joining Our Team

• Round 1, Cultural Fit: Kick things off with an informal chat with our People & Culture team.
  
  Don't worry—we just want to get to know you better, learn about your goals, hobbies, and more
• Round 2, Case Study & Technical Skills with Product: Join two members of our Product team for a deep dive into a case study.
  
  This is your chance to showcase your client management skills and demonstrate how you approach problem-solving.
  
  
• Round 3, Meet the Team: Have a conversation with additional team members to further explore your skillset and ensure there's a great cultural fit.
  
  This is also your chance to ask questions and see how we collaborate.
  
  
• Final check, CEO Chat: Meet Héctor, our CEO He's excited to connect with you, talk about Shakers' future, and discuss your vision and expectations.
  
  

More about Shakers

At Shakers we imagine, design, and create the next-generation way of working.

Our vision is to be the
leading community and platform in the world that helps companies work with freelance teams
through our technology.

We are a 70-person, fast growing startup based in Madrid.

It's the place for you if you're looking for a
high-performance, very dynamic & technological environment surrounded by ambitious people

Our DNA

At Shakers, we are
obsessed
with our
values
.

Half of our bonuses are performance-based, and the other half come from embodying what it means to
be a true Shaker

WINNING TEAM
We all feel like part of a
winning team
—one that pushes boundaries, challenges the status quo, and moves the needle We
set ambitious goals
and seek people who are driven to achieve them.

F1C10
We're building an environment where fear doesn't hold us back.

Experimentation and learning from failure are part of our DNA.
Fail fast, grow faster.


Fail 1X, chase 10X.

We value risk-takers who aren't afraid to go big

STAY HUMBLE

We embrace a
beginner's mindset
—always evolving, always learning, and always finding new solutions.

At Shakers,
humility combined with ambition fuels our success
, and when we blend the two, the results are extraordinary

A huge thanks for being interested in Shakers, we'd love to see you soon.

Required Skill Profession

Other General