Founding Software Engineer

Comunidad de Madrid
Madrid, Spain
about 1 month ago

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience required
5 years minimum
Compensation
€40,000.0 - €120,000.0
Working hours
Regular working hours
Languages
Spanish

Tech stack

Application Programming Interfaces (APIs) Artificial Intelligence Cloud Computing Cursor (Graphical User Interface Elements) Firmware LoRaWaN GitHub Copilot Swiftui Ios Frameworks Backend Build Management Speech Synthesis

Job description

Our partner is an early-stage AgTech / IoT startup focused on building sustainable, technology-driven solutions with real-world impact.

  • Stage: Pre-seed
  • Focus: Virtual fencing technology for livestock
  • Operations: Europe (founders & HQ) + South America (field operations)
  • Mission: Create sustainable value where progress and responsibility for people and planet go hand in hand
  • Culture: High ownership, AI-first mindset, field-driven problem solving
  • One strong engineer + AI is expected to outperform traditional teams, Founding Software Engineer, you’ll own and ship the entire technical stack and play a central role in shaping the product, the architecture, and the technical direction of the company., * Own the entire technical stack: embedded firmware, cloud backend, and iOS app
  • Take over, iterate, and optimize existing STM32-based firmware
  • Design and build cloud infrastructure from scratch (APIs, data, scalability)
  • Build an iOS app designed for low-literacy, non-technical users (UX, visuals, text-to-speech)
  • Collaborate closely with hardware manufacturing partners
  • Use AI coding tools (Cursor, Claude, GitHub Copilot) as core development partners
  • Travel regularly for hands-on field testing and product launches
  • Ship V1 to market in 2025 and continuously improve reliability and usability

Requirements

This is not a typical engineering role. We’re not looking for someone who just wants to write code. We’re looking for a builder who is excited by ambiguity, ownership, real-world problems, and the opportunity to help build a company from the ground up.

You’ll be the sole engineer, working AI-first, shipping a real hardware + software product, and testing it in cattle fields in South America. If you’re looking for a polished corporate environment, a large team, or clearly defined processes from day one, this role is for you - and that’s completely fine., * Strong software engineering fundamentals (language-agnostic)

  • Heavy, demonstrated use of AI coding tools in daily development
  • Experience shipping complete products independently
  • iOS development experience (Swift / SwiftUI)
  • Systems thinking across firmware, backend, and mobile
  • Comfort working autonomously as the sole engineer
  • At least 5+ years of hands-on engineering experience

Nice to Have

  • Embedded / firmware experience (C, STM32)
  • IoT protocols (e.g., LoRaWAN)
  • Cloud backend development (any modern stack)
  • Experience with hardware products
  • Spanish language skills
  • AgTech, robotics, or physical-world product exposure, * You need a large team to be productive
  • You’re skeptical about AI-assisted development
  • You prefer highly structured corporate environments
  • You’re looking for feature-only work without ownership
  • You’re uncomfortable with ambiguity, iteration, and field conditions, * Autonomous, resourceful builders
  • Low-ego, high-ownership mindset
  • Comfortable with uncertainty and responsibility
  • Strong product sense and user empathy
  • Excited by real-world, physical impact

Benefits & conditions

  • Base salary: 40,000 - 120,000 € (depending on equity track and seniority)
  • Equity: Significant founding-team level equity with vesting over 3 years
  • Contract: Full-time employment
  • Vacation: 28 days per year
  • Working model: Remote-first (Europe preferred) with regular travel
  • Upside: Clear path to Head of Engineering / CTO

Apply for this position

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