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# Software Engineer, AI Platform

- **Company:** FIRSTS AI LLC
- **Location:** San Francisco, CA, United States
- **Experience:** Experienced
- **Salary:** $188,000.0 - $254,000.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Computing Platforms, Software Debugging, Software Construction, Software Engineering, Systems Integration, Data Logging, Large Language Models, Multi-Agent Systems, Prompt Engineering, Backend, Data Layers, AI Platforms, Information Technology, Machine Learning Operations, Front End Software Development, Virtual Agents, Dynatrace, Microservices
- **Published:** September 4, 2026
- **Apply:** https://startup.jobs/software-engineer-ai-platform-mixpanel-8812078

## About the Role

* Bachelor's degree in Computer Science, Mathematics, a related field, or equivalent practical experience
 * 2+ years of professional software engineering experience
 * Strong full-stack fundamentals: you're comfortable working across frontend, backend, and data layers
 * Excellent debugging and technical investigation skills
 * Strong technical communication, ideally with experience collaborating in an asynchronous remote environment
 * Ability to move fast and iterate in ambiguous environments: you take ownership and focus on delivering value to users
 * Hands on experience integrating and orchestrating LLMs and agents
 * Experience building AI native systems, including iteratively improving and scaling them in production
 * Familiarity with techniques used to optimize AI agents: eval frameworks, agent tooling, vector search engines, context engineering, and prompt engineering.
 * A desire to be on the forefront of leveraging AI to drive product improvement, observability and product analytics at scale.

## Description

We are looking for a driven Software Engineer to join our AI Platform team. You will be responsible for building the scalable, secure, and reliable infrastructure that accelerates AI agent development. You will be a leader and key contributor in a small, fast paced, newly formed team with a mandate to empower AI development across the company., * Platform Architecture: Design and develop the core backend services, APIs, and microservices that enable product teams to easily and securely leverage AI models.

 * Agent Orchestration: Build scalable frameworks and tools to support multi-step agent workflows, including task decomposition, tool invocation, and persistent memory.
 * Evaluation & Reliability: Build robust evaluation systems to continuously measure reasoning quality, hallucination rates, and task success.
 * Operational Excellence: Architect high-performance serving infrastructure with strict guarantees around latency, throughput, cost-efficiency, and error handling.
 * Observability & MLOps: Ensure comprehensive monitoring, structured logging, and distributed tracing across all deployed AI models.
 * Collaboration: Partner with designers, product managers, and other engineers to build self-serve infrastructure that transforms our AI development cycle.
 * Leadership: Advocate for software engineering best practices, conduct thorough design and code reviews, and mentor junior engineers.


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