Senior Software Engineer

Skills

Location

You must be live (or willing to live) in: SPAIN

Languages

Fluent EnglishFluent Spanish

Job Description

We're looking for an experienced Software Engineer eager to shape and scale advanced AI systems for real-world healthcare applications.

🎯 Responsibilities

  1. Design, architect, and deploy production-grade software solutions from end to end
  2. Build and optimize low-latency speech and language model (LLM) pipelines
  3. Develop and maintain orchestration layers and reliability systems for real-time conversational AI
  4. Scale complex distributed systems to handle large volumes of asynchronous workloads
  5. Tackle the technical challenges involved in deploying and operating AI voice agents for thousands of daily phone calls

🛠️ Requirements

  1. 3-5 years of experience building end-to-end software products
  2. Strong background with technologies such as FastAPI (Python) for backend and React (TypeScript) for frontend, or equivalent experience with similar stacks
  3. Proven experience managing large-scale distributed systems with asynchronous workload orchestration
  4. Bachelor’s or Master’s degree in Computer Science, Engineering, Mathematics, Physics, or related field (or equivalent experience)
  5. Ownership mentality with a drive to solve hard problems and learn rapidly

➕ Nice to have

  1. Familiarity with large language models (LLMs), AI agents, or other machine learning models
  2. Experience with Pipecat or similar voice AI platforms
  3. Interest in entrepreneurship and a vision for using this experience as a springboard for future ventures

Hiring Process

  1. Initial conversation to understand who you are, what you want to do, and where you wanna go (30 minutes)
  2. Work on a take-home challenge to discuss in the following interview
  3. Review your solution with a couple of engineers from the team (60 minutes)
  4. Talk with the co-founder (60 minutes)
  5. Offer stage
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Prosper AI

We are Prosper AI, a technology company focused on helping organizations make smarter decisions through artificial intelligence.

Our goal is to transform complex data into clear, actionable insights and automated decisions that drive business growth. To achieve this, we build AI solutions that analyze large volumes of information in real time and generate precise recommendations.

We are also specialized in AI-powered phone agents for the healthcare sector. Our AI Phone Agents handle calls with payors and patients with human-like expertise, while reducing costs by over 50%.

Our agents can manage tasks such as:

  1. Benefits verification
  2. Claims status checks
  3. Prior authorizations
  4. Patient scheduling
  5. Balance reminders

They are available 24/7, handling these interactions continuously and efficiently.

Our broader mission goes even further: we aim to eliminate up to $200 billion in administrative waste in the healthcare system, allowing professionals to focus on what truly matters—healing, not handling bureaucracy.

In summary, at Prosper AI we turn data and communication into a real competitive advantage through artificial intelligence.

Location

Barcelona