Trusted by teams at Pax8 · Chewy · Splunk · Intel · Sphero · EVO Payments
You find a good team, get them up to speed on your product, and six months later half of them are gone. New developers spend months learning what the last team knew. Features slip. Costs double.
Engineers who write great code but can't explain what they built or why. You end up managing the team instead of building your product.
Teams still working like it's 2019 are burning your budget. AI-native development means faster delivery and lower costs — but only if your team actually knows how to use it.
Our average developer tenure is over 5 years. The three cofounders who started Kelsus in 2008 still lead the company. When you work with us, you get a team that knows your product inside and out.
We hire for communication first. Every engineer on our team can explain what they're building, why they made the choices they made, and what's coming next. You'll never wonder what's happening with your product.
Our teams use AI tools daily — for code generation, testing, architecture planning, and documentation. This makes us faster, which means lower costs for you. As AI improves, our prices drop.
Fixed-bid, milestone-based pricing tied to business value. No open-ended retainers, no paying for idle time. We scope work, set milestones, and deliver.
We built K-Watch to solve a problem we kept seeing: third-party API changes breaking production systems without warning. K-Watch monitors vendor APIs, detects deprecations months in advance, and generates migration plans automatically — with human review from our engineers.
Drop in an article URL. AI writes the script, generates video clips with Sora, synthesizes narration and music, burns captions, then publishes to YouTube, LinkedIn, Instagram, and TikTok. End-to-end video production and distribution, fully automated.
Pax8, a SoftBank-backed cloud marketplace, needed a partner that could build and maintain vendor integrations at scale — over 100 and growing fast. Previous teams churned out, taking institutional knowledge with them.
Pax8 needed a team that could scale without the typical agency turnover. Our near-zero team turnover and deep integration expertise made us the right fit.
We became Pax8's longest-serving vendor, building and maintaining their integration infrastructure across 100+ vendor partnerships.
Longest-serving vendor at Pax8, outlasting multiple other agency relationships.
The engagement earned a Stevie Award for excellence in technology partnerships.
The integration expertise we built at Pax8 directly informed K-Watch, our AI-powered API monitoring platform that detects vendor API changes before they break production.