Senior Software Engineer

At HeyMilo, were redefining recruiting with AI agents that interview and evaluate candidates at scale. Our mission is to create intelligent, reliable interview experiences that meet enterprise-level demands.

Were looking for a Senior Software Engineer with strong React and Python/FastApi expertise to help us build and scale our platform. This is a hands-on role where you'll own end-to-end features, ship quickly, and collaborate closely with the team.

Who You Are

• Frontend Wizard: Design, build, and optimize user-facing interfaces with a focus on performance, scalability, and exceptional user experience.
• API Alchemist: Build scalable endpoints and services in Python and FastAPI.
• Infra Savvy: Experienced with AWS, Docker, Lambdas, and Microservices.
• AI Curious: Familiarity with LLMs, Prompt engineering and AI workflows.
• Data Processing Pro: Proficient with Redis, queues, and asynchronous jobs that process large volumes of data.
• Observability-Minded: Prioritize metrics, logging, and alerts.
• Startup Ready: Hands-on, adaptable, thrives in rapid-growth environments.

What You'll Do

• Build exceptional and well optimized user interfaces that are fast and reliable.
• Develop scalable APIs using FastAPI, integrating AI services.
• Optimizing performance of MongoDB and ClickHouse queries for real-time usage.
• Build LLM evaluation pipelines and inference engines.
• Manage data infrastructure with ClickHouse, Redis, MongoDB.
• Implement monitoring and observability tools (InfluxDB, PostHog).
• Automate deployment and infrastructure with Docker/Kubernetes.
• Enhance job queue architecture with Airflow and async workers.

Some work that was shipped by our talented engineers recently:

• Detecting if a candidate is cheating during interviews.
• Reducing analysis time from 5 minutes to 20 seconds post-interview.
• Leverage message queues to scale Agentic AI platform to support 1000+ concurrent interviews.

Tech Stack

• Frontend: React, ShadCN, TypeScript, Material UI, WebRTC
• Backend: Python, FastAPI, Redis, ClickHouse, Airflow, MongoDB
• DevOps: AWS, Docker, Kubernetes
• Observability: InfluxDB, PostHog
• AI/LLM: OpenAI, Anthropic, Gemini, Pinecone, DeepSeek, LLaMa Cloud

Why You Should Join Us:

• Own and scale critical frontend & backend infrastructure.
• Influence Agentic AI technology at enterprise scale.
• Work alongside top talent from Instagram, Microsoft, Uber, Meta.
• Competitive salary, strong performance-based benefits.
• Work hard, play hard culture with high ownership.
• Most importantly, be at the forefront of cutting agentic AI technology and take your career to new heights.

This Role is NOT for You If:

• You don't have experience with FastAPI, Python, or MongoDB.
• If you're looking for a "chill" place to work. We ideate on Monday and ship by Friday. It's a fun, fast-paced environment where you will learn a lot, quickly.
• If you can't work autonomously or take full accountability/ownership of your output. This role expects you to deliver quality work end to end, from writing the code to monitoring it in production.

Standard Requirements:

• 3-5 years of experience in Software Engineering
• Experience working at an early stage startup and shipping 0->1 products
• Bachelors degree or strong CS/engineering fundamentals from a reputable university.