---
title: 'Software Engineer, AI Agents at Blockit AI'
canonical: 'https://feeny.ai/job/software-engineer-ai-agents-blockit-ai-san-francisco-9jgss3nxpdgk'
type: 'job'
last_seen: '2026-09-05'
---

# Software Engineer, AI Agents at Blockit AI

- **Company:** Blockit AI
- **Location:** San Francisco, CA
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-01-21
- **Last confirmed live:** 2026-09-05
- **Apply:** https://jobs.ashbyhq.com/blockit/3e87a3f6-d96c-4f84-a7ac-a73a77ed9bf3

## Job description

## ABOUT BLOCKIT

Time is the the most valuable resource we have, yet coordinating it remains stuck in the dark ages. At Blockit, we're building the AI that finally fixes this: an autonomous time agent that handles the full complexity of scheduling—timezones, group coordination, in-person logistics—like an executive assistant that never sleeps.

While every LLM application to date has been a one-on-one conversation, Blockit is one of the first multiplayer, stateful AI agents—coordinating between multiple people, maintaining context across conversations, and taking real actions in the world. As more people connect their calendars, our network becomes exponentially more powerful.

This is the foundation of a platform of AI agents with access to the world's time. We're backed by Sequoia, and we're a small, sharp team that moves fast, ships constantly, and holds a high bar. If you want to build something genuinely new, we'd love to talk.

You can visit our teams page https://www.notion.so/Meet-Blockit-Engineering-292f9049a24f803cb56dc84d4ece8730?pvs=21 to learn more about our team and culture!

## THE ROLE

You’ll own the intelligence at the core of Blockit: our scheduling agents that autonomously coordinate meetings across people, time zones, and constraints.

This includes designing and iterating on agent architectures, writing and refining prompts, building evaluation frameworks, and shipping new capabilities as models improve. You’ll work across our orchestrator agents (which manage conversation flow) and specialized sub-agents, with the goal of making Blockit smarter, faster, and capable of handling increasingly complex coordination problems.

You’ll be architecting and building real-world AI agents used in production.

## WHAT YOU’LL DO

- Write and refine prompts across our agent system—orchestrators, sub-agents, and tools
- Build and maintain evals to measure agent quality and catch regressions
- Debug agent failures: figure out why it misunderstood a request or made a bad call
- Implement new agent capabilities as user needs expand
- Experiment with new architectures and techniques as models improve
- Instrument and analyze agent behavior to find patterns and failure modes

## WHAT WE’RE LOOKING FOR

- 2+ years of experience shipping and owning production software
- Strong backend engineering skills, with the ability to work across the stack when needed
- Experience working with LLMs in production systems (or a demonstrated ability to learn quickly in this space)
- Deep curiosity about agent architectures and how the industry is evolving beyond simple prompt-based systems
- Clear, structured communicator who can explain what’s working, what isn’t, and why

## LOCATION

- San Francisco, CA. On‑site 4 days per week

## About Blockit AI

## Company Overview
- **One-liner**: Blockit AI provides an instant, 24/7 AI scheduling agent that handles the entire meeting logistics process via email and Slack, eliminating back‑and‑forth communication.
- **Entity Type**: Private (Seed‑stage; $5M raised)
- **Headquarters**: San Francisco, California, USA (540 Hampshire Street)
- **Founded**: 2024
- **Founders**: Kais Khimji (former Sequoia Capital partner) and John Han (ex‑Timeful, Google Calendar, Clockwise)

## Core Business
- **Primary industry**: AI‑powered calendar scheduling / productivity software
- **Target customers**: B2B – individual professionals, teams, and enterprises (currently serves 200+ companies, including startups, VC firms, and large enterprises)
- **Mission/purpose**: Turn scheduling from a days‑long chore into a minutes‑long, fully automated process by building a “time graph” that connects users’ calendars into a social network.

## Products & Services
- **[Blockit AI Scheduler](https://www.blockit.com/)**: An AI agent that users can CC on an email or message in Slack to automatically negotiate meeting times, respect preferences, handle groups, time zones, and in‑person logistics. Entirely AI‑driven with no human‑in‑the‑loop; dynamically adapts to user behavior over time.

## Market Standing
- **Valuation**: Not disclosed (seed round led by Sequoia Capital; no valuation publicly available)
- **Key Metrics – Funding**: $5M seed round (February 2026)
- **Key Metrics – Revenue**: Not publicly available; pricing starts at $1,000/yr per individual, $5,000/yr per team
- **Notable Investors/Partners**: Sequoia Capital (lead – Pat Grady), Haystack, Adjacent, Original, NPV (Jeff Weiner, former CEO of LinkedIn)
- **Growth Signals**: 200+ customers within the first ~2 years, including Together.ai, Brex, Rogo, a16z, Accel, Index; agent has spread purely through virality; “scheduling hundreds of thousands of meetings” as of launch in early 2026

## Competitive Advantages
- **Agent‑first architecture**: Unlike link‑based schedulers (e.g., Calendly), Blockit’s AI handles the entire negotiation, understands nuance (e.g., email tone, meeting priority), and can see both parties’ calendars when both are users.
- **Network effect potential**: When two Blockit users meet, agents talk directly, creating a “time graph” that becomes more valuable as adoption grows.
- **Founders’ domain expertise**: Kais Khimji (ex‑Sequoia partner with deep network) and John Han (over a decade on calendar products at Timeful, Google Calendar, Clockwise).
- **Zero error tolerance**: The company claims to have solved every edge case (group scheduling, time zones, human error, prioritization) that killed previous attempts (Clara Labs, x.ai), making it reliable enough for enterprise adoption.
- **SOC 2 certified** with encryption at rest/in transit and no training on customer data.

## Strategic Focus
- **Network expansion**: Turn Blockit into the “last untouched social network” by connecting all users’ calendars, enabling instant scheduling without any human negotiation.
- **Enterprise adoption**: Currently serving large companies (undisclosed) and targeting bigger deployments through a dedicated mid‑market sales team (evidenced by job postings for Mid‑Market Account Executive).
- **Continuous learning**: Agent dynamically adapts to each user’s preferences over time, increasing stickiness and value.

## Why Work Here
- **High‑impact role**: Early‑stage startup with strong product‑market fit (200+ customers, viral growth) – employees can shape the future of an AI‑first productivity platform.
- **Culture**: Described as a “time cult” based in San Francisco; engineers come from companies like Retool, Waymo, and Notion.
- **Policy**: Likely office‑centric given SF headquarters and team description; remote/hybrid details not publicly specified.
- **Perks**: Work on a cutting‑edge AI agent that directly solves a universal pain point; strong backing from top‑tier VC (Sequoia); opportunity to join a small, elite team.

## Sources
1. [blockit.com](https://www.blockit.com/)
2. [sequoiacap.com/companies/blockit-ai](https://sequoiacap.com/companies/blockit-ai/)
3. [cbinsights.com/company/blockit-ai](https://www.cbinsights.com/company/blockit-ai)
4. [techcrunch.com](https://techcrunch.com/2026/01/22/former-sequoia-partners-new-startup-uses-ai-to-negotiate-your-calendar-for-you/)
5. [blockit.com/blog-posts/introducing-blockit](https://www.blockit.com/blog-posts/introducing-blockit)

## Other roles at Blockit AI

- [Technical Recruiter](https://feeny.ai/job/technical-recruiter-blockit-ai-san-francisco-mbc6ztqg7s9b) — San Francisco, CA
- [Mid-Market Account Executive](https://feeny.ai/job/mid-market-account-executive-blockit-ai-san-francisco-bbbhghx8ck9a) — San Francisco, CA
- [Software Engineer, Infrastructure](https://feeny.ai/job/software-engineer-infrastructure-blockit-ai-san-francisco-ejyym065w5fv) — San Francisco, CA
- [Software Engineer, Product & Growth](https://feeny.ai/job/software-engineer-product-growth-blockit-ai-san-francisco-ms8wstp4exja) — San Francisco, CA
- [Software Engineer, AI Agents](https://feeny.ai/job/software-engineer-ai-agents-foresite-labs-san-francisco-fa106kh70933) — San Francisco, CA
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