From internal tools to company-wide workflows, Noloco turns your data into a custom, AI-powered app your team will love to use. We empower teams running complex operations to create custom portals, such as internal tools, client portals, and CRMs. Changing the way small and medium-sized businesses grow and work together.

Backed by Y Combinator, Frontline and other top-class investors, Noloco is a fast-moving, remote-first company with a team spread across Ireland, Spain, and North America.

Our Mission Our mission is to let businesses of all sizes build truly custom software, without writing code. As a

Senior Full Stack Software Engineer , you'll be a key driver of this mission, working across both the frontend and backend to deliver an exceptional product experience. You'll shape our AI Co-Builder, APIs, workflow engine, data models, and user interfaces, ensuring performance, reliability, and beautiful UX for customers.

About Us We pride ourselves on a culture of autonomy, speed, and craft. At Noloco, you'll join a team that trusts each other to take ownership and execute. You'll work closely with our founder and product designer and collaborate across product, growth, support, and engineering to ship meaningful improvements end-to-end, from design and implementation to measurement and iteration.

This is a unique opportunity to own

entire features

in a fast-growing SaaS company and help shape the future of how software is made.

What You'll Be Doing Building

end-to-end features

across our stack: backend services, GraphQL APIs, and React-based UI

Advancing the capabilities of Nola, our AI Co-Builder, leveraging the latest improvements from frontier models





Designing and improving reusable React components and design systems that power Noloco's app builder experience

Scaling our backend systems and APIs to handle growing customer demand

Collaborating with Product and Design to deliver intuitive, polished user experiences

Improving analytics, observability, monitoring, and alerting across the stack

Driving technical discussions and mentoring other engineers to raise the bar

What You'll Actually Be Doing Adding new components or improving existing ones to the Noloco App Builder

Adding more tools/logic to our AI Co-Builder so users can interact with the Noloco platform through chat, or MCP

Extending our native data tables with new field types, UX improvements, and performance enhancements

Building integrations with external data sources and APIs to open up new workflows

Extending Noloco's workflows and automations to let customers connect and automate their tools

Owning full-stack performance: optimizing queries

and

frontend rendering

Monitoring and improving end-user experience from first click to final API call

We'd Love to Hear From You If You Have: Significant experience (4 years) working as a

full stack engineer

on complex web applications

Strong

JavaScript/TypeScript

skills across Node.js and React.js

Experience designing clean,



scalable APIs (GraphQL experience a plus)

Experience building and improving AI powered agents, workflows and user-experiences

Solid understanding of frontend performance, state management, and design systems

A product mindset --- you care about the user experience, not just shipping code

Comfortable working without PM overhead; you want to help to shape the problem, not just implement a spec

Experience at a startup or a company with a genuinely high engineering bar

Our Tech Backend:

Node.js (TypeScript), Postgres, MongoDB, Redis

Frontend:

React.js, Tailwind, ShadCN UI

Models:

A mix of OpenAI and Anthropic models

APIs:

Internal Node GraphQL & REST APIs, dynamic GraphQL APIs

Infrastructure:

AWS ECS, Lambdas, monitored with Grafana & Sentry

Tools:

GitHub, Linear, Slack

Harnesses: We mostly use Claude Code, but encourage you to use the best setup for you

What we offer Interesting and challenging work

Work-life balance

Competitive salary and equity

Employee-friendly equity terms (extended exercise)

Work remotely, hybrid or in-office, your choice

Health Insurance & Wellness allowance

Regular team events and off-sites

5 weeks of paid vacation

Any Equipment you need to work from home or office

Where You'll Work Hybrid from our Barcelona office.

Our Engineering team is spread across Ireland and Spain, so we're remote-first but meet regularly in person, including at least one annual offsite. We're building out our engineering team across Barcelona and Ireland, and are open to either location.

#J-18808-Ljbffr

📌 Senior Software Engineer (Madrid)
🏢 Noloco
📍 Madrid