> Markdown version of [/jobs/ext/2665331-full-stack-engineer](https://www.wearedevelopers.com/jobs/ext/2665331-full-stack-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Full-Stack Engineer - **Company:** Antai Ventures - **Location:** Barcelona, Spain - **Salary:** €50,000.0 - €70,000.0 - **Contract:** Temporary contract - **Skills:** Clean Code Principles, Adobe InDesign, Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Business Software, Cloud Computing, Code Review, Collaborative Software, Databases, Continuous Integration, Cursor (Graphical User Interface Elements), Software Debugging, Programming Tools, PostgreSQL, Software Engineering, SQL Databases, TypeScript, Web Applications, Web Application Frameworks, Large Language Models, Backend, Vue.js, Build Management, Containerization, Front End Software Development, Virtual Agents, Software Coding - **Published:** September 2, 2026 - **Apply:** https://www.adzuna.es/contact-us.html ## About the Role We need someone who is genuinely full-stack: comfortable across backend, database, frontend, mobile (web-based via Capacitor), and cloud infrastructure. You don't need to be an expert in every layer, but you need the confidence and curiosity to work through problems across the entire stack, learn what's needed, and find the right solution for the context., Strong engineering fundamentals + You've designed and operated production systems and understand the tradeoffs between latency, consistency, cost, and complexity. + You write simple, maintainable code and care deeply about good abstractions. You know that simplicity is the ultimate sophistication. + You're comfortable owning systems end-to-end: from research and spec writing, through design and implementation, to deployment and operations. + You have solid experience with TypeScript, SQL, and modern web frameworks. Our stack is Vue, Nuxt 4, Nuxt UI, PostgreSQL, ZenStack/Prisma, ElectricSQL, TanStack DB, and Capacitor. + You've worked with cloud infrastructure (GCP, AWS, or similar) and understand CI/CD, containerization, and production operations., + You thrive in the earliest stages of building - where there's no playbook, priorities shift fast, and the best move is often the scrappy one that gets things done now. + You're comfortable with high intensity and ambiguity. You don't need a perfectly defined scope to start making progress. + You've been through the 0*1 phase before (or you're hungry for it) and you understand that speed of iteration matters more than perfection. Nice signals + Experience with local-first / offline-first architectures or real-time sync. + Experience building mobile apps with Capacitor or similar web-to-native bridges. + Familiarity with the Vue/Nuxt ecosystem. + Experience in B2B SaaS, workforce management, or field service operations. + You've worked in early-stage startups and are comfortable with ambiguity and fast-changing priorities. + Experience integrating LLMs into production systems (function calling, RAG, agentic workflows). ## Description You'll be one of the first engineers on a small, high-ownership team building a product from the ground up. This isn't a role where you'll be handed tickets - you'll be researching customer problems, crafting detailed specs, designing solutions, writing code, and shipping features end-to-end. You'll work directly with the founders and be expected to bring strong judgment about what to build, how to build it, and when to keep things simple., + Study customer problems deeply and translate insights into detailed functional and technical specs - then turn those specs into working software. + Design and build core backend systems powering workforce scheduling, real-time coordination, and operational workflows. + Build clean, well-structured APIs and data models that support web, mobile, and internal tools. + Develop the worker-facing mobile experience (web-based, via Capacitor) with a focus on simplicity for low-tech-savviness users. + Contribute to the AI agent's backend - the infrastructure that lets it resolve coverage incidents, contact workers, and take autonomous actions. + Manage and evolve cloud infrastructure, CI/CD pipelines, and developer tooling. + Improve reliability, observability, and performance across the system. + Build integrations with other business software the industry already uses - accounting, payroll, and other operational tools. + Participate in design reviews and product decisions, bringing engineering perspective to what gets built and how. Your first 3-6 months You'll ramp up fast. Here's what that might look like: + Immerse yourself in the domain - studying how service companies actually run their operations day-to-day, reviewing processed customer insights, and building a mental model of the problems we're solving. + Pick up existing specs, understand the reasoning behind them, and start shipping features from detailed functional and UI specifications. + Start crafting your own specs - studying a problem, collaborating with the team to refine the approach, designing the implementation, and seeing it through to production. + Build and iterate on the worker-facing mobile experience, making it intuitive for frontline workers with minimal tech experience. + Get hands-on with the local-first sync layer (ElectricSQL, TanStack DB) as real usage reveals edge cases and design tradeoffs. + Help shape the AI agent's capabilities - how it reasons about coverage, contacts workers, and escalates to managers. + Improve the development workflow itself - testing patterns, CI/CD, tooling, and the feedback loop between specs and code. Throughout all of this, you'll be leveraging AI coding agents heavily - not as an afterthought, but as a core part of how you research, design, plan, implement, and review., + You use AI coding agents daily and can orchestrate multi-file agentic workflows with tools like Claude Code, Cursor, or similar - not just autocomplete, but steering complex architectural decisions and reviewing AI-generated output for quality and maintainability. + You can effectively amplify yourself using AI across the entire development lifecycle: research, spec writing, design, implementation, code review, and debugging. + You stay current with the AI tooling ecosystem and have opinions about what works and what doesn't. Product and business sense + You can see the bigger picture. You deeply understand customers and their world, and you balance business goals and constraints in your engineering decisions. + You anticipate problems before they arrive and know when to compromise, be pragmatic, and avoid over-engineering. + You're a clear communicator who can articulate technical tradeoffs to non-technical teammates and write specs that others can follow., + AI-augmented workflow as standard practice. AI coding agents aren't a novelty here - they're part of how the team operates daily, across every phase of the development cycle. + Structured async + tight real-time alignment. We use Linear for task-centered work and value deliberate, organized communication. At the same time, we stay tightly in sync through lightweight, real-time collaboration - the natural rhythm of a small team that keeps each other in the loop without meetings and status rituals. + Direct collaboration with founders. No layers of product management between you and the people making product and business decisions. + Small team, high standards. We optimize for learning speed and iteration velocity, not process and ceremony. ## Related Videos - [Lessons learned from building a thriving Vue.js SaaS application](https://www.wearedevelopers.com/videos/1666-lessons-learned-from-building-a-thriving-vue-js-saas-application) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Kubernetes and Microservices with Multi-Model Databases](https://www.wearedevelopers.com/videos/382-kubernetes-and-microservices-with-multi-model-databases) - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [Common Mistakes in Vue.js and How to Avoid Them](https://www.wearedevelopers.com/videos/958-common-mistakes-in-vue-js-and-how-to-avoid-them) ## Related Articles - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 220: Cursor Camp, TanStack hack, and Enterprise Agents](https://www.wearedevelopers.com/magazine/734-dev-digest-220-cursor-camp-tanstack-hack-and-enterprise-agents) - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025) - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development)