A CTO and Dev Team You Don't Have to Hire.
One monthly retainer. 100 hours of senior development. 10 hours of CTO-level strategy. Built for scale-ups that need to ship.
Uptime Delivered
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You've Tried This Before. It Didn't Work.
The agency trap: padded timelines, account managers who've never written code, and invoices that don't match outcomes. You paid for a team but got a process. The freelancer gamble: fast starts, no architecture, and code that breaks the moment someone else touches it. You saved money and lost months. The hiring impossibility: a senior CTO costs $250k+ before benefits. Recruiting takes six months, onboarding another three. You needed help last quarter, not next year. There's a better model. One that puts strategy and execution in the same room.
The Interspark Way Strategy and Execution, One Retainer.
We're an outsourced CTO office and senior dev team. One retainer gives you architecture, roadmapping, UX strategy, and 100 hours of hands-on development every month. We reject bloated agency models and process theater. No one here bills hours for meetings about meetings. We believe the team that sets the strategy should be the team that writes the code. Ninety days in, here's what changes. Your roadmap is clear, your codebase is stable, and features ship predictably. You stop managing vendors and start running your business.
Senior Engineers and Strategists. Not a Body Shop.
Every person on your engagement has years of experience building and shipping production software. We staff for judgment, not just output.
Fractional CTO
Senior technical leadership for architecture, roadmapping, and strategic decisions.
Senior Architects
System designers who build for scale, maintainability, and real-world constraints.
Full-Stack Engineers
Experienced developers who own features end to end, from database to UI.
UX/UI Strategists
Interface thinkers who design for clarity, usability, and business outcomes.
Security Engineers
Security built into the process from day one. Not patched on at the end.
Data Engineers
Pipelines, analytics, and data infrastructure that supports real decisions.
Acceptance Driven Development. Build to Criteria, Not to Calendars.
Most dev processes optimize for ceremony over output. Endless planning meetings, estimation games, and status rituals that feel productive but aren't. We do something different.
Define what done looks like. We set clear acceptance criteria together before any code is written. No ambiguity, no scope creep.
Build to the criteria. No recurring planning meetings. You get progress updates when there's real progress to report.
Deliver and verify. If it meets the criteria, it ships. If it doesn't, we fix it. No change orders, no surprise invoices.
How It Works
We Talk
A senior conversation about your business, your tech, and where things stand today.
We Define
Together, we set acceptance criteria for the first deliverables. Clear outcomes, no guesswork.
We Build
Our team executes against the criteria. You get updates when they matter, not on a schedule.
We Deliver
You verify the work against the criteria. It meets the bar, it ships. Simple as that.
What Your Retainer Covers
CTO-level strategy and senior development. One predictable monthly fee.
CTO-Level Strategy
10 hours per month of architecture review, technical roadmapping, UX strategy, and vendor evaluations from senior leadership.
Senior Development
100 hours per month of feature builds, bug fixes, infrastructure work, and third-party integrations from experienced engineers.
Architecture & Code Review
Every engagement includes ongoing architecture oversight and code review. It's built in, not bolted on.
UX/UI Strategy
Interface strategy and design direction included in your CTO hours. No separate design retainer needed.
Transparent Communication
Async-first updates with direct access to the people doing the work. No account managers, no telephone game.
Predictable Overage
Need more than 100 hours? Overage is $150/hr, flat. No negotiations, no surprise tiers.
$8,500/mo. CTO Strategy and Dev Team Included.
110 hours of senior work. Predictable cost. No long-term contract required.
CTO & Development Retainer
100 dev hours + 10 CTO strategy hours included. $150/hr for additional hours. Async-first communication.
Beyond the Retainer
The core retainer covers strategy and development. These services extend your capabilities further.
Measured by Outcomes, Not Activity
Real results from long-term engagements. Legacy modernization, cost reduction, and products that shipped on time.
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What Clients Say
They built our MVP for a fraction of what other firms quoted — and delivered faster.
Will Rose
CTO, Talent Select
Milwaukee
Let's Talk About What You're Building.
A 30-minute call with a senior architect. We'll assess your situation, identify the gaps, and tell you honestly whether we're the right fit.