You will build and maintain full-stack applications across React, Next.js, and Node.js, transitioning prototypes into dependable production products. The role involves integrating AI model providers and developing LLM-powered workflows for humanitarian contexts. Working directly with leadership, you’ll tackle technical trade-offs to ensure reliability in complex, real-world operational environments.
Full Stack Product Engineer at Unboxuniverse
Join Unboxuniverse.com to build AI-powered transparency systems for high-impact humanitarian programs. As a Full Stack Product Engineer, you will work across React, Node.js, and LLM orchestration to track aid delivery in real-time for organizations like UNRWA. This is a high-autonomy role where you’ll turn early-stage prototypes into dependable products that matter where it counts. If you are a pragmatic TypeScript expert ready to apply advanced AI to real-world global challenges, this is your chance to lead meaningful technical work from Barcelona or across Europe.
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Location
Barcelona, Spain
Compensation
Not Disclosed
Company
Unboxuniverse
Role overview
SoftwareAntwerp, BelgiumSeries A (VC-backed)
Unbox is a purpose-driven technology company that develops platforms and ventures designed to strengthen resilience at both community and systemic levels.
The company’s platform enables corporations, governments, and non-profits to create, run, and manage programmable funding distribution networks within closed-loop systems. These systems ensure efficient, transparent, and targeted allocation of resources to citizens, employees, and community members, and are used across public incentives, grants, philanthropy, and welfare initiatives.
Building on this foundation, Unbox also incubates new AI-driven applications that extend its mission into broader domains of community resiliency. These include technologies that protect elderly populations from manipulation, tools that safeguard democratic processes, and systems that ensure resources reach their intended purposes.
Through this dual focus - on programmable funding infrastructure and next-generation AI applications - Unbox advances its purpose of creating technology that empowers institutions and communities with trust, safety, and resilience.
Backed by HSBC Asset Management, SFPIM Relaunch, KBC Bank.
What you will do
- Develop and maintain full-stack features using TypeScript across frontend, backend, and edge compute infrastructure.
- Integrate LLM-powered workflows and automation into production systems to enhance humanitarian aid monitoring and verification.
- Improve system reliability through automated testing, clear documentation, and repeatable deployment processes on Cloudflare and AWS.
Who this is a fit for
- Proven ability to ship and maintain production-ready web applications using React, Node.js, and modern TypeScript.
- Hands-on experience building with AI APIs or LLM-powered tools, with a focus on practical, dependable implementations.
- A pragmatic problem-solver who takes ownership of the entire development lifecycle, from debugging backend services to refining UI behavior.
Why this role is remarkable
- Work on high-stakes software that brings real-time transparency to global humanitarian efforts, from Gaza to Burundi.
- Gain direct exposure to advanced AI orchestration and agentic development workflows within a small, high-autonomy technical team.
- Influence the product direction significantly by collaborating closely with senior leadership to solve ambiguous, real-world operational challenges.
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
Jack gets to know what you're great at and what you want next, then searches 15 million jobs daily and helps you discover roles at companies like this.
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What happens next?
Jack’s an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack’s network.
If your profile’s a match and Unboxuniverse wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.