Last verified 1 Nov · updated daily

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Blacksmith

Purpose-built CI cloud for building, testing and validating code (incl. AI-generated code)

15 open rolesSeries B · $45M2 remote
Size
3
Backers
PXPGVYCE
HQ
Unspecified
Industry
B2B
Email who hires at BlacksmithVisit site ↗Their job board ↗

Open roles at Blacksmith, by team

15 roles · 4 teams · re-checked daily

Each team has someone who decides who gets hired. An email to them gets read; a form joins the pile.

Free to try: see the roles that fit you and who's hiring for them. No sign-up to start.

  • Engineering 6

    6 open roles in New York City, newest found today. Roles like these usually go to the Head of Engineering.

    usually hires for thisHead of Engineering

    • IT Operations Engineer

      New York CityMid-levelFirst seen today

    • Staff Product Engineer

      UnspecifiedSeniorFirst seen 2 months ago

    • Staff Systems Engineer

      UnspecifiedSeniorFirst seen 2 months ago

    • Senior Systems/Infrastructure Engineer

      UnspecifiedSeniorFirst seen 2 months ago
    • + 2 more Engineering roles

      • Solutions Engineer

        UnspecifiedMid-levelFirst seen 2 months ago

      • Technical Support Engineer

        UnspecifiedMid-levelFirst seen 2 months ago

  • Operations 2

    2 open roles in San Francisco, newest found last month. Roles like these usually go to the Head of Operations.

    usually hires for thisHead of Operations

    • Office Manager

      san franciscoMid-levelFirst seen last month

    • Office Manager

      RemoteMid-levelFirst seen last month

  • Sales 2

    2 open roles in San Francisco, newest found 3 weeks ago. Roles like these usually go to the Head of Sales.

    usually hires for thisHead of Sales

  • Other roles 5

    5 open roles in San Francisco and New York City, newest found today. Roles like these usually go to the Hiring manager.

    usually hires for thisHiring manager

The product

What Blacksmith is building

Blacksmith runs GitHub Actions workloads on dedicated compute with CI-optimized caching/storage, plus 'codesmith,' a cloud coding agent that diagnoses CI failures, autofixes, and autonomously tests changes before merge. The bet: as AI codegen makes writing code cheap, the bottleneck shifts to validating it.

The money

Why this matters

Customer count grew from ~700–800 to 5,000+ in under a year; revenue up 10x+. Peak XV underwrites an actual usage curve, not just a thesis. Key risk: whether GitHub/GitLab bundle validation as free feature — Blacksmith's moat is owning the underlying compute.

Investors: Peak XV Partners (lead), GV, Y Combinator (existing investors 'tripling down')

The outlook

Hiring outlook

Explicit — 'Yes, we're hiring across the board in NYC and SF.' Most of the raise goes to compute, and they plan to grow managed core footprint by an order of magnitude.

Hiring intensity8/8

Working at Blacksmith

Blacksmith: Purpose-built CI cloud for building, testing and validating code (incl. Founded 2024, currently <50 employees. Working at B2B, Infrastructure companies at this stage means broad remit, direct access to founders, and equity that still means something if the company works out.

Unspecified is where most Blacksmith positions are located. 2 can be done remotely.

How to actually get hired at Blacksmith

Why applying the normal way doesn't work

Blacksmith is <50 people. No recruiter, no HR. Your application goes to a founder juggling everything. Cold outreach is how you actually get seen.

Who to contact at Blacksmith

Who decides
a founder or department head
Best channel
LinkedIn or direct email
ATS
Ashby

Founding team

AS
Aayush Shah
Co-founder & co-CTO

University of Waterloo; Toronto-based; co-leads engineering.

AM
Aditya Maru
Co-founder & co-CTO

Toronto-based; previously at Cockroach Labs; co-leads engineering.

AJ
Aditya Jayaprakash
Co-founder & CEO

University of Waterloo; leads Blacksmith, which he founded in 2024. Reached $10M ARR with just 10 employees before scaling.

X ↗

What to show them

Bare-metal/cloud compute, caching layers, CI runner performance; scaling hundreds of thousands of cores.

A cold email that works at Blacksmith

Subject: IT Operations Engineer, [your one-line proof]
JP — 'writing code has gotten dramatically easier, validating it hasn't' is the cleanest framing of the CI bottleneck I've read. I've scaled [compute/caching system] and want to help grow your managed core footprint by the order of magnitude you mentioned.
Get personalised templates →

What Blacksmith screens for

Reference the Claude Opus 4.5 (Dec 2025) release as the inflection that 'meaningfully changed how developers write software' — Blacksmith's own framing for why CI volume exploded.

Customize your CV for the Blacksmith role. Matching the job description language helps clear ATS filters.

Avoid

Don't make these mistakes

Don't pitch them as a 'code generation' company — they're deliberately the validation/testing layer downstream of codegen. Don't confuse with generic CI resellers; they own compute.

Mistakes that kill Blacksmith applications

  • A recycled CV gets rejected fast at Blacksmith (<50 people). They notice.

  • Don't open with what you want. Open with what Blacksmith is dealing with right now — Customer count grew from ~700–800 to 5,000+ in under a year; revenue up 10x+, and what you'd do about it.

  • Most B2B, Infrastructure applications get ghosted. A day-five follow-up can double your response rate.

Tracking Blacksmith

Applying to Blacksmith? Get the contact, not the form.

Free to try: see the roles that fit you and who's hiring for them. No sign-up to start.

The Blacksmith interview process

Usually 3 stages over about 7 days. See each stage, what it tests and how to prepare.

Blacksmith interview guide →
  1. 1Intro Call
  2. 2Technical Deep Dive
  3. 3Final Round

Modelled on how B2B companies with under 50 people interview, not confirmed by Blacksmith.

Blacksmith careers: frequently asked questions

How many jobs does Blacksmith have open?

As of November 1, 2026, Blacksmith has 15 open positions.

Does Blacksmith hire remotely?

Yes, 2 of the 15 current Blacksmith vacancies are remote.

What roles is Blacksmith hiring for?

Blacksmith is hiring across Engineering, Design and Operations. The most recent opening is IT Operations Engineer.

How do I apply for a job at Blacksmith?

Use the apply links above, or check our guide to getting hired at Blacksmith.

Does Blacksmith respond to cold emails?

Response rate data for Blacksmith not yet confirmed.

Who is the hiring manager at Blacksmith?

At this size, hiring is usually run by a founder or department head.

What ATS does Blacksmith use?

Blacksmith uses Ashby.

How competitive is it to get hired at Blacksmith?

Roles at <50-person B2B, Infrastructure companies typically draw 50-100 applicants in the first two weeks. Applying inside 72 hours of a posting going live is the single biggest lever you control.

Where is Blacksmith based?

Blacksmith is headquartered in Unspecified.

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