---
title: 'Senior Software Engineer at Arch'
canonical: 'https://feeny.ai/job/senior-software-engineer-arch-san-francisco-3kp4pby00f7e'
type: 'job'
last_seen: '2026-09-08'
---

# Senior Software Engineer at Arch

- **Company:** Arch
- **Location:** San Francisco, CA
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2025-06-13
- **Last confirmed live:** 2026-09-08
- **Apply:** https://jobs.ashbyhq.com/arch/56e6a7b4-8b8b-4386-a668-75680c5102e7

## Job description

## 💡 ABOUT ARCH

Arch powers frontline industries with cutting-edge AI.

The US $800 billion frontline-services sector underpins the nation, yet many of these critical businesses still rely on spreadsheets, outdated software, and paper forms. We’re driving energy resilience, economic strength, and long-term prosperity by bringing cutting-edge AI to the frontline services that need it most.

We’re backed by Coatue, Floodgate, Gigascale, ReGen, MCJ Collective, and the founders of Aurora Solar.

Competitive salary + significant equity package based on experience.

🎒 Role Overview:

We're hiring a Software Engineer to join our tight-knit engineering team of four. In this high-impact and fast-paced role, you'll collaborate directly with our founders to build products at the cutting edge of technology and sustainability. This role requires in-person collaboration 3-4 days per week at our San Francisco office (WeWork or office on Union Square).

If you’re motivated by solving challenging problems, have a passion for elegant code, and want your work to have a meaningful impact, we'd love to hear from you.

🏃 What You'll Do:

- Build and enhance core product features, from backend logic to intuitive user interfaces.
- Own your work end-to-end, from concept through deployment.
- Collaborate closely with our founders and engineering team to define and execute our technical roadmap.
- Experiment and innovate with new technologies, particularly in AI/ML, to enhance our offerings.

📚 Qualifications:

Must-haves:

- Startup Experience: 5+ years software engineering experience in a fast-paced startup environment.
- Technical Stack: Proficiency in TypeScript (our stack includes Node.js, Next.js, PostgreSQL).
- Engineering Excellence: A passion for crafting clean, elegant solutions to complex problems.
- ML experience: Exposure to classic ML workflows (even through side projects): data cleaning, model training, and iteration.

Strong Bonuses:

- Experience handling large-scale datasets—we deal with billions of records and focus heavily on query performance.
- Familiarity with leading-edge AI productivity tools (Cursor, Windsurf, MCP, etc.).

🧑‍🤝‍🧑 Who You'll Work With:

Philipp (Co-Founder & CEO) - Hi, I’m Phil! 👋 Raised on a small strawberry farm in Bavaria, Germany, I'm passionate about sports, hiking, and exploring meditation and biohacking. Before founding Arch, I earned an MBA and Master’s in Environmental Science from Stanford, led global solar projects with 180+ employees, and was a management consultant at McKinsey, helping software companies scale. Ask me about my favorite cafes and brunch spots in SF!

Sacha (Co-Founder & CTO) - Hi, I'm Sacha! Originally from Belgium, I discovered my passion for climate tech after experiencing devastating fire seasons in Australia and California. With a dual M.Sc. in Engineering and Management, I thrive at the intersection of engineering, design, and strategy. My entrepreneurial journey includes both early failures (a Tinder-like app ahead of its time) and successes (a YC-backed company with 40+ employees). Previously, I built AI tools enabling first responders to rapidly identify fire ignition zones, directly influencing my path to founding Arch.

Interviews start the week of March 31st.

🌱 Ready to Make an Impact?

If this sounds like you, we'd love to connect. Apply now and join us on a bold mission!

## About Arch

## Company Overview
- **One-liner**: AI-powered revenue automation platform that helps HVAC, plumbing, electrical, and drain contractors retain customers, find high-intent leads, and automate multi-channel marketing campaigns.
- **Entity Type**: Private – Seed stage (total funding $6.2M)
- **Headquarters**: San Francisco, California, United States (with presence in Ireland)
- **Founded**: 2022 (Pre-Seed funding closed February 2023)
- **Founders**: Phil K. (Co-Founder & CEO), Sacha Schmitz (Co-Founder)

## Core Business
- Primary industry: Home services software / Marketing automation for trade contractors
- Target customers: B2B – SMBs and mid-market contractors in HVAC, plumbing, electrical, and drain services
- Mission/purpose: “Accelerate the biggest infrastructure transition in human history” – enabling home services operators to adopt the right upgrades at the right time through data, automation, and financing.

## Products & Services
- **Arch Platform (AI Revenue Software)**: End-to-end marketing automation that ingests data from ServiceTitan, analyzes customer health, identifies churn risks, and automatically runs retention and lead-generation campaigns. Includes email and direct mail execution, A/B testing, and full attribution tracking.
- **AI-Lead Discovery**: Machine learning that analyzes permits, property data, and market signals to surface high-intent prospects before competitors.
- **Precision Diagnostics**: Benchmarking tool that compares a contractor’s performance against proprietary industry data (thousands of contractors) to pinpoint churn gaps and upsell opportunities.
- **Automated Retention Campaigns**: Detect at-risk customers and re-engage them with personalized offers without manual intervention.

## Market Standing
- **Valuation**: Not disclosed
- **Key Metric (Funding)**: $6.2M total (Pre-Seed Feb 2023 + Seed Feb 2024)
- **Notable Investors / Partners**: Backed by leading investors (5 investors in Seed round; names not publicly disclosed). Closely integrated with ServiceTitan.
- **Growth Signals**:
  - Headcount grew 42.9% YoY (now 8 employees)
  - Website traffic up 232.5% month-over-month and 193.3% year-over-year
  - Customer case study: Pacific Heating & Cooling generated ~$138K in new pipeline in 36 days at ~11x ROI
  - Two active job postings as of mid-2026 (Founding GTM and Founding Account Executive)

## Competitive Advantages
- **Trade‑specific specialization**: Built exclusively for HVAC, plumbing, electrical, and drain contractors, not generic business software.
- **Deep ServiceTitan integration**: Native connection means data stays in sync and attribution is accurate.
- **Proprietary benchmark data**: Industry’s most comprehensive performance database from thousands of contractors, enabling precise diagnostic recommendations.
- **Autonomous execution**: Runs end-to-end campaigns (list building, printing, mailing, A/B testing, attribution) with no need for agencies or extra headcount.
- **Unique external data sources**: Incorporates permits, real estate transactions, and financial signals to build a complete market picture.

## Strategic Focus
- Scale the “Autonomous Revenue Engine” to help home services operators capture market share without increasing headcount.
- Expand AI lead discovery and predictive analytics to reduce customer churn (industry average is 36% annual churn; best contractors achieve 8%).
- Continue vertical integration with ServiceTitan and potentially add more home services verticals (e.g., drain).
- Fundraising likely later as growth accelerates (current seed stage).

## Why Work Here
- **Culture & values**: Camaraderie (supportive, assume best intentions), Ownership (ask forgiveness, not permission), Urgency & Focus (bias for action, address climate challenges), and Excellence (continuous learning, high standards).
- **Team size & impact**: Tiny, fast-moving team (~8 people) – early employees will have outsized ownership and influence.
- **Work environment**: San Francisco headquarters with international presence (Ireland). Likely in‑office or hybrid given the early stage; specific remote policy not stated.
- **Perks / engineering culture**: Opportunities to shape the product from the ground up (“founding” roles), work on climate‑critical infrastructure transition, and build AI/ML features that drive real revenue outcomes for contractors.
- **Recent job openings**: Founding GTM role and Founding Account Executive (as of May/June 2026). Ideal for candidates who thrive in extreme pace and high autonomy.

## Sources
1. [getarch.com (homepage)](https://getarch.com/)
2. [getarch.com/about](https://getarch.com/about)
3. [getarch.com/careers](https://getarch.com/careers)
4. [linkedin.com/company/get-arch](https://www.linkedin.com/company/get-arch)
5. [jobs.ashbyhq.com/arch (career page)](https://jobs.ashbyhq.com/arch)

## Other roles at Arch

- [Founding Deployment Strategist](https://feeny.ai/job/founding-deployment-strategist-arch-san-francisco-d1eb18g0mv3t) — San Francisco, CA
- [Founding SDR](https://feeny.ai/job/founding-sdr-arch-san-francisco-0d6b53b2fbtp) — San Francisco, CA
- [Founding GTM](https://feeny.ai/job/founding-gtm-arch-san-francisco-va1vqcw0krkt) — San Francisco, CA
- [Founding Account Executive](https://feeny.ai/job/founding-account-executive-arch-san-francisco-3kj3wcrywcgc) — San Francisco, CA
- [Data Scientist](https://feeny.ai/job/data-scientist-arch-san-francisco-4vfjkej6x0h1) — San Francisco, CA
- [Senior Software Engineer](https://feeny.ai/job/senior-software-engineer-inkind-remote-f29myj5y3cqm)
- [Senior Software Engineer](https://feeny.ai/job/senior-software-engineer-legora-london-yge34em2hk2x) — London, United Kingdom
- [Senior Software Engineer](https://feeny.ai/job/senior-software-engineer-clari-salesloft-guadalajara-j8cph7mdm8jd) — Guadalajara, Mexico
- [Senior Software Engineer](https://feeny.ai/job/senior-software-engineer-provenir-inc-united-kingdom-9nphmgbm460e) — United Kingdom
- [Senior Software Engineer](https://feeny.ai/job/senior-software-engineer-samsara-san-francisco-638rhwde1qvq) — San Francisco, CA