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Junior Software Engineer
Prosper AISoftware Engineer designing and scaling real-time AI systems at Prosper AI. Focused on developing low-latency speech/LLM pipelines and orchestration layers in Barcelona.
Tech Stack
Tools & technologiesDistributed SystemsPostgresPythonReactTypeScript
About the role
Key responsibilities & impact- At Prosper, we’re pushing the limits of what’s possible with real-time AI.
- We’re engineering systems that sound human, reason under strong latency constraints, and adapt instantly to messy, high-stakes healthcare conversations.
- As a Software Engineer, you’ll be at the center of designing and scaling our platform, the low-latency speech/LLM pipelines, orchestration layers, and reliability systems that make this possible.
- This is a full-time role in Barcelona office with the possibility to move to the New York office.
Requirements
What you’ll need- 0-3 years of experience building products end-to-end, from architecting solutions to deploying production-grade software.
- A solid understanding of the technologies that power our stack or their equivalents in other languages: FastAPI (Python) + PostgreSQL backend with a React (TypeScript) frontend.
- Experience managing large scale distributed systems with asynchronous workload orchestration.
- Familiarity with LLMs, AI agents or other ML models is a plus. We use Pipecat for our voice agents.
- Founder mindset: ownership + hard work. You see Prosper as a learning step for your future startup.
- Be ready to handle the challenges of deploying AI voice agents to thousands of daily phone calls.
- Bachelor’s or Master’s degree in Computer Science, Engineering, Maths, Physics or related field (or equivalent experience).
Benefits
Comp & perks- Flexible work arrangements
ATS Keywords
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Hard Skills & Tools
FastAPIPythonPostgreSQLReactTypeScriptdistributed systemsasynchronous workload orchestrationLLMsAI agentsML models
Soft Skills
ownershiphard workfounder mindset
Certifications
Bachelor's degree in Computer ScienceMaster's degree in Computer ScienceBachelor's degree in EngineeringMaster's degree in EngineeringBachelor's degree in MathsMaster's degree in MathsBachelor's degree in PhysicsMaster's degree in Physics