Senior hands that raise the average.
Full-stack, AI, and embedded engineers in your repo, on your cadence, on US hours. Small well-tested changes, honest trade-offs, and direct Slack access to the people writing your code: no account-manager relay.
Scoped by sprint against an hour range with a hard ceiling
10+ years average experience
You own every line in your GitHub org
Code only touches AI in secure environments

Published rates. Hour ceilings in writing.
Senior Full-Stack Staff Augmentation
$100–120 /hour
Senior front-end, back-end, and full-stack delivery
Direct Slack and US-hours overlap
Billed every 2 weeks
AI, Embedded & Cloud Specialists
$150–200 /hour
AI research and production ML/LLM systems
Embedded/IoT and real-time engineering
Cloud performance and cost-efficiency engineering
Commercial Terms, in Writing
Billed every 2 weeks: pay only for developer man-hours
Written sprint range with a hard ceiling
Estimates and clarification meetings are free
Direct access to the engineers doing the work
Choose on-demand capacity or a larger team. Every sprint has a written hour range and a hard ceiling.
Teams that kept us.
The engineers who shipped Cuboh (YC S19) never left: zero team handoffs since 2019.
“Horizon Labs has strong skills and experience with OpenAI, LLMs, API development, Kubernetes, and cloud deployment. Their engineering support helped us deliver a production-ready application we could roll out to customers fast.”
Samir Sen · Co-Founder & CEO, FlairLabs (YC S22)
“Horizon Labs vastly increased our visibility into technical workflows and capacity to achieve projected outcomes. They have a fast and reliable team with exceptional integrity.”
Marcus Ellison · CEO, TrueChoice
60+ products shipped
Since 2019, across SaaS, healthtech, manufacturing, marketplaces and AI.
The same senior engineers from first sprint to launch
Kickoff usually the day after you sign
A written hour range with a hard ceiling, every sprint
Handled in the contract.
“The invoice will grow.”
Hour range with a hard ceiling in every contract; the maximum is the most you'll ever pay for agreed scope. Overage is on us.
“Offshore goes silent.”
California leadership, engineers overlapping 6am–6pm Pacific, direct Slack access to the people writing your code.
“They'll hold my code hostage.”
Your GitHub org from day one, IP assigned under a US contract. No proprietary frameworks, no lock-in.
