Trusted by founders and growing companies · 5+ years with Mobile Monster
What clients say
Clients stay with us for years
Hasnain and his team at HKS are the most diligent, hardworking, fair, and honest software engineers (or any employees) I have met. They ask great questions to understand requirements.
Jon-David HagueFounder & CEOWhat we build
What you get with AI developers for hire
- AI engineers on your projectOne developer or a full team, for a single build or month after month.
- Built with AI, checked by peopleClaude Code and Codex speed up the work. A senior engineer reviews every change.
- Apps, agents and SaaSWeb apps, mobile apps, AI agents and automations, from first version to scale.
- Your hours, your tools4 hours of overlap with US business hours, in your Slack, repo and tracker.
- Code you ownYour repo, your accounts and clear docs from day one. No lock-in.
Case study · Mobile Monster
80,000+ device buybacks a year, with 70% fewer support tickets
80,000+
devices processed a year with little manual work
70%
fewer support tickets about payments or delivery
Tools we connect
Works with the tools you already use
We connect to your apps, data and AI models, so nothing has to change on day one.
Claude
OpenAI
Gemini
n8n
How we make sure it's right
Senior quality on every project
- Senior engineersExperienced engineers lead every project from start to finish.
- AI-assisted, human-checkedWe build with AI coding agents, and an engineer reviews every line.
- Design firstWe plan the screens and flows before we write code.
- Tested before launchWe test each feature on real devices and real data.
- You own everythingYour code, accounts and data stay yours, always.
Ways to work with us
Pick how you'd like to work together
Every project is priced to its spec after a free call. Pick a way to start, or ask us which fits.
- Fixed-scope projectWe agree what gets built and when, then deliver it.Best for a clear goal: an agent, an app or a feature with a launch date.
- Dedicated teamOur engineers join your team and work on your roadmap.Best for a roadmap that keeps going: our engineers work as part of your team.
- AI agent build and careWe build your agent, then watch it and improve it every month.Best for AI agents that should keep getting better after launch.
FAQ
Questions we hear
Straight answers to what people ask before they hire us.
Can I hire one AI developer, or do I need a team?
Either. Start with one AI developer for a clear task, or hire a small team with a lead engineer for a full product.
What does an AI developer from HKS do?
They build your software with AI coding agents like Claude Code and Codex, add AI features like chat and agents, and test everything before it ships.
Can we talk to the developers directly?
Yes. You work with the engineers in your own Slack, repo and tracker, not through a middleman.
How is this different from hiring a freelancer?
You get a team with a senior engineer who reviews every change, plus backup if someone is away. Clients like Mobile Monster have stayed with us for 5+ years.
How does pricing work?
Every project is different, so we price it to your spec. Book a free call, and we send a custom proposal with a clear price.
Do you work in our time zone?
For US clients we commit to 4 hours of overlap with US business hours. We agree the meeting times at the start.
Do we own the code and data?
Yes. Your code, accounts, keys and data stay under your control. Nothing is shared across clients.
Related services
You might also need
- AI-assisted software developmentAI-assisted software development, checked by senior engineers
- AI SaaS and MVP developmentAI SaaS and MVP development, from idea to launch
- Custom AI agentsCustom AI agents that work like trained team members
- AI web app developmentAI web apps and custom software development, built to grow
Let's talk