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.