ENGAGEMENT MODELS

Engineering Engagement Models
Matched to Your Roadmap

Cypherox structures each engagement around three questions: how defined your scope is, how long the work runs and how much delivery control you keep.

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HOW TEAMS ENGAGE US

Explore Our 4
Engagement Models

Each model splits scope risk, budget control and delivery ownership differently. Start with the one that matches where your project stands today.

For Evolving Requirements

Time & Material Model

Billing follows the effort actually spent, so scope can move as you learn. Suited to AI prototypes, discovery work and feedback-driven features.

KEY HIGHLIGHTS
  • Reprioritize work without renegotiating the contract
  • Pay for effort that is logged and reported
  • Daily reporting with Scrum-based execution
  • Start small, then expand or pause capacity
Commercial Model
Effort-Based Billing
Actual effort consumed
Open or still changing
Best For

Effort estimates are shared upfront and progress reports show where the time went.

For Defined Scope

Fixed Cost Delivery Model

One agreed price for a documented scope, paid against milestones. Works best when specifications and integrations are settled before work begins.

KEY HIGHLIGHTS
  • Budget agreed before development starts
  • Milestone-based payments tied to deliverables
  • Deliverables and acceptance criteria documented
  • Change requests scoped and priced separately
Commercial Model
Milestone-Based Fixed Price
Per agreed milestone
Defined and signed off
Best For

Cost is fixed for the agreed scope. New requirements move through a cost change request.

For Phased Programs

Hybrid Engagement Model

Combines models by phase: a fixed cost build for the defined core, then dedicated or effort-based capacity for extensions and production support.

KEY HIGHLIGHTS
  • Fixed price for the part you can specify
  • Open capacity for work still being shaped
  • Build context carries into later phases
  • Commercial terms set per workstream or phase
Commercial Model
Blended Commercial Structure
Per workstream or phase
Defined core, open extensions
Best For

Useful for AI products where release one is clear but later behavior depends on usage data.

QUICK DECISION GUIDE

Side-by-Side
Model Comparison

Eight criteria that usually settle the choice, from how billing works to who runs delivery.

Criteria Dedicated Team ★ Time & Material Fixed Cost Hybrid Model
Pricing Model Monthly, per engineer Billed on actual effort Fixed price per milestone Set per phase
Scope Flexibility High, backlog-driven High, changes anytime Low, via change requests Fixed core, open extensions
Speed Required Team assigned in 1-2 weeks Start once roles are agreed Starts after scope sign-off Staged by phase
Project Management Client-led priorities Shared, sprint by sprint Cypherox-managed Split by workstream
Cost Predictability Steady monthly cost Variable, reported daily High for agreed scope Fixed core, variable rest
Recommended For Ongoing product engineering AI prototypes, discovery Defined MVPs, migrations Phased AI programs
Action Build a Team Start T&M Get a Quote Plan Hybrid
HOW ENGAGEMENTS START

Start Your Engagement in 4 Steps

A short, structured path from first conversation to engineers working in your codebase.

1

Share Your Requirements

Tell us what you are building, what already exists and your limits on budget, timeline and team.

2

Review Scope Together

Our engineers assess technical risk and scope certainty, then recommend the model that fits your plan.

3

Agree Terms and Team

We confirm roles, seniority, milestones or billing basis and the reporting rhythm before work begins.

4

Onboard and Deliver

Engineers get access to your tools and repositories and the first sprint or milestone starts on schedule.

BUYER QUESTIONS

Engagement Model
FAQs

Common questions from engineering and product leaders deciding how to structure their work with Cypherox.

Yes. One practical path is a fixed cost first release, followed by a dedicated team or time and material once the roadmap opens up. We make the switch at a milestone or sprint boundary, so billing, ownership and handover are agreed before anything changes.

We avoid forcing a fixed price onto unclear scope. A short, effort-based discovery phase lets engineers test assumptions, prototype risky parts such as AI model behavior and document requirements. Once scope settles, the remaining work can move to a fixed quote.

You set sprint priorities and work with the team in your own tools, such as Jira, Slack or Microsoft Teams. Cypherox handles hiring, employment and people management, so your leads direct the engineering work without carrying the overhead of a larger in-house team.

It depends on how proven the use case is. Early agent work, where evaluation results shape the design, fits time and material. Once model behavior, integrations and guardrails are documented, a fixed cost build works. Production AI systems that need ongoing tuning suit a dedicated team.

START A CONVERSATION

Not Sure Which Model
Fits? Let's Scope It

Tell us what you are building and where the project stands today. A Cypherox engineer will review your requirements, flag scope risks and recommend an engagement model and team shape before you commit.

London, United Kingdom