Kalos · 3 months ago
Founding Software Engineer
San Francisco, CA
Full-time
Onsite
Mid, Senior Level
4+ years expKalos is an early stage, high-growth startup based in San Francisco, CA, developing an AI Agent named Blue to optimize ad campaigns for its customers. As a founding Software Engineer, you will play a crucial role in shaping the product and engineering culture while building new features and collaborating with the founders on the company’s vision.
Artificial Intelligence (AI)B2BMarketingSoftware
Responsibilities
You will build new features 0 ->1 fast and iterate across our product based on customer feedback
Own and ship core product features end-to-end across our AI agent, integrating LLMs and and building workflows to delivering great UX
Collaborate directly with the founders on product vision, roadmap, and architecture
Lay the foundations for engineering culture, tooling, and processes
Help build and mentor the early team as we scale
Qualification
Required
4-10 years experience building software with a strong track record and ability to work full-stack
Startup mindset — resourceful, sharp, and entrepreneurial, who is excited to take early ownership
Love to move fast, to learn, and to always-be-improving
Experience using LLMs in production and interest in staying at the cutting edge of AI
Experience in designing and building scalable systems. Knowledge of modern software engineering practices and frameworks
You care deeply about users and love shipping polished, impactful work
Strong product intuition — you think beyond the code
Company
Kalos
Kalos offers an AI-driven business intelligence and marketing automation platform for digital ad campaign management.
11-50 employees
Funding
Current Stage
Early StageLeadership Team
Matt Jayson
Founder & CEO
Recent News
2025-12-30
Company data provided by crunchbase