Hashorn

AI-augmented engineering, QA & security

Ship production software at AI speed.

Hashorn pairs senior engineers with AI workflows to build, test, and secure software faster, without cutting corners.

Next.jsPythonGoReact NativePostgresAWSPlaywrightOWASPLangGraphpytestTerraformTypeScriptNext.jsPythonGoReact NativePostgresAWSPlaywrightOWASPLangGraphpytestTerraformTypeScript

Building with AI is fast.Shipping software that actually works isn't.

Most teams glue together AI-generated code, skip QA, push to production, and find out about the bugs on Monday. We built Hashorn because that's not engineering, it's hoping.

01 · Build

Faster product development, without losing the plot.

Our engineers ship with AI assistants for code generation, review, and refactor, paired with humans who own architecture, taste, and the weekly demo. You get speed AND someone you can hold accountable.

  • MVP development
  • SaaS product engineering
  • Web & mobile apps
  • Legacy modernization with AI
  • Internal tools and AI agents
PR #482 · feat: harden discount logic
+4 −1
+ export function applyDiscount(price: number, code: string) {
- return price * 0.9;
+ if (!code) throw new InvalidCodeError();
+ const rule = await rules.get(code);
+ return rule.apply(price);
+ }

AI review, caught missing input validation; suggested rule-based discount lookup. Tests added in discount.spec.ts.

Approved by AI · re-review human required
playwright · 6 specs
3 passed · 1 running · 2 queued
  • auth · login flow
    124ms
  • billing · invoice generation
    211ms
  • api · rate limit guards
    92ms
  • checkout · stripe webhook
    running
  • search · fuzzy matching
    queued
  • uploads · multipart resume
    queued

02 · Test

Quality assurance that keeps AI-built products honest.

Speed without testing is just faster regressions. Our QA engineers write the tests that AI can't be trusted to write itself, and run them on every commit, every release, every regression.

  • Manual + automation testing
  • Regression suites
  • Performance & load testing
  • End-to-end product testing
  • AI-assisted test generation
  • Dedicated QA pods

03 · Secure

Security-first delivery, not security-as-an-afterthought.

AI generates code at the speed of light. AI also generates vulnerabilities at the speed of light. We build threat modeling, secure code review, API hardening, and cloud configuration audits into the same sprint that ships features.

  • Secure coding & code review
  • Application security audits
  • Vulnerability testing
  • API security
  • Cloud & DevOps security
  • DevSecOps integration
security ledgerv1.4 · 2026-05-08
  • OWASP Top 10 review
    passed
  • API auth & rate limits
    passed
  • Secrets in vault, not env
    passed
  • IAM least-privilege audit
    passed
  • Threat-model: 1 medium open
    open
Hashorn product

Every Hashorn client gets BuildOS. The AI workspace that turns meetings into shipped sprints.

BuildOS is the project-management product we built for ourselves and our clients. Paste a meeting, get structured requirements, an AI-planned sprint, tasks with QA + security checklists, and a copy-paste developer prompt ready for Claude Code or Cursor. One workspace, two surfaces, your team sees only their projects; Hashorn's back-office runs the engagement.

  • AI meeting → requirements
  • AI sprint + task planning
  • QA + security baked into every task
  • Copy-paste prompts for Claude Code / Cursor
Explore BuildOS

Provisioned per engagement. Not self-serve, see how to get access.

sprint-3 · week 3 of 6
9 tasks · 5 done

Develop

2/3
  • Stripe Issuing webhook handler
  • Ledger primitives + migrations
  • Cardholder dashboard skeleton

QA

1/3
  • Idempotency tests for webhooks
  • Ledger imbalance regression
  • E2E: cardholder onboarding

Security

2/3
  • Verify PCI scope boundary
  • Webhook signature validation
  • Rate limit on /refund endpoint

How we work

Our AI-augmented delivery blueprint.

De-risk and accelerate your delivery, regardless of your current setup.

AGENTIC
WORKFLOWS
DEVELOPMENT
FLOW
DEFINE
DESIGN
BUILD
SHIP
Product
Architecture
UI/UX
Develop
Test
Secure
Deploy
Run
AI
DELIVERS
Product Research & Specs
Program Plan
Epics & Stories
System Design
Tech Specs
Patterns
UI/UX Specs
Prototypes
Assets
Implementation Plan
Code
Tests
Test Plan
Cases & Tests
Bugfixes
Threat Model
SAST / DAST
Hardening
IaC
Pipelines
Monitoring
Knowledge Mgmt
Customer Service
Triaging
HUMAN
DECIDES
Scope
Priority
Trade-offs
Standards
Experience
Usability
Logic
Quality
Risk
Readiness
Severity
Risk-accept
Rollout
Approval
Escalation
Resolution
APPROX.
PRODUCTIVITY
GAINS
60%
AUTOMATED
HANDOVER
60%
30%
AUTOMATED
HANDOVER
50%
70%
AUTOMATED
HANDOVER
50%
AUTOMATED
HANDOVER
40%
50%

Swipe to explore the full blueprint →

The proof-of-value approach

Every engagement follows the same arc, diagnose, pilot, scale.

No twelve-week discovery decks. Two-week diagnosis, real-work pilot, then your team takes over.

Why Hashorn

We don't just claim. We prove.

  • One team, three disciplines

    No vendor handoffs between dev, QA, and security.

  • Senior-only delivery

    Average engineer experience: 6+ years.

  • Weekly demo cadence

    You see working software every Friday, not at month-end.

  • AI as a tool, not a marketing line

    Concrete: AI PR review, test gen, threat-model assist.

  • Async-first, time-zone friendly

    Built for US, UK, EU, and ME clients from day one.

FAQ

Questions clients ask before we start.

From idea to production. Faster, safer, better-tested.

Tell us what you're building, we'll tell you how we'd ship it.

Book an intro call