Holded · Cross-functional product squad (Accounting, Invoicing, CRM, Inventory, or Team Management vertical)
Senior Fullstack Engineer
OnsiteSeniorBarcelona, SpainApplications closedB2B SaaSPlatform
Our Take
Build AI-native backend systems for SME business management at Holded.
What you’ll do
- Write clean, maintainable code across the full stack
- Design and build scalable services and APIs
- Integrate and experiment with AI capabilities
- Deploy code to production environments
- Mentor other team members
- Drive architectural decisions
- Collaborate in hiring and training
What they’re looking for
- 5+ years PHP backend experience
- NoSQL databases (MongoDB, Redis)
- React and TypeScript for frontend ownership
- Hands-on LLM or AI tooling integration
- Domain-driven design patterns
- Unit and integration testing discipline
Skills & Focus Areas
- PHP
- MongoDB
- Redis
- React
- TypeScript
- DDD
- LLMs
- Git
As posted by Holded
Join the team. Make an impact.
At Holded, we believe that daily admin should never stop a great idea from becoming a success. That's why we create intuitive software to empower anyone who dares to start their own business. Long story short: we want to make business simple.
In order to create cutting-edge products that meet the needs of the sector, talent is essential. We are looking for passion, creativity, and commitment. In return, we offer the same.
The Role
We are hiring a Senior Fullstack Engineer with a strong backend foundation and a genuine passion for AI. You will own features end-to-end — from API design to UI — but your natural home is the server side: architecture, data, performance, and reliability. On top of that, you bring real hands-on experience working with AI tools and a curiosity for how this technology is reshaping the way we build software.
You will directly contribute to our mission of building the most innovative business management platform in the industry — and you will help us do it smarter.
The team
You will be part of a product development cross-functional team — what we call a squad — where you will work with backend, frontend, and full-stack developers, product owners, and more, building an epic digital product.
Each squad is responsible for designing, developing, and operating all services relating to their assigned features inside the Holded platform. These can span any of our verticals: Accounting, Invoicing, Team Management, Project Management, Inventory, CRM, etc.
The teams are empowered to make independent decisions, partnering effectively with product, analytics, and other areas of the business.
What you will do
You will be hands-on writing clean and maintainable code across the full stack, with a primary focus on backend systems built in PHP.
You will design and build scalable, performant, and reliable services and APIs that power our product.
You will actively integrate and experiment with AI capabilities — whether that's leveraging LLMs, building AI-assisted features, or improving internal workflows with intelligent tooling.
When you have developed something, you will know how to (and you will want to) deploy it to a production environment.
As a senior developer, you will mentor other team members, and they will have you as a reference and someone to learn from.
You will actively participate in and occasionally drive architectural decisions within your squad."
You will collaborate in hiring and training technical personnel.