Waterfall plans everything up front. Sprints plan incrementally.
Waterfall development defines the entire product before writing code. Agile sprint development plans and ships in 2-week cycles. For software products where requirements evolve, sprints win. For defined-scope projects where the deliverable is known, a waterfall-style fixed-scope engagement is efficient and more predictable.
Project management approach decision between traditional waterfall and agile sprint methodology — and how this maps to working with external developers
Waterfall and Agile are project management methodologies that reflect different levels of requirement certainty.
Waterfall: Requirements → Design → Development → Testing → Deployment. Each phase completes before the next begins. The assumption: you know what you're building before you build it.
Works when: the deliverable is well-defined, requirements are stable, and the project has a clear completion point. Construction projects, regulatory compliance systems, and defined-scope software builds can work in waterfall.
Fails when: requirements evolve as users interact with early versions. Most consumer software discovery phases need iteration.
Agile sprints: 2-week cycles of planning, building, and reviewing. Each sprint delivers working software. Requirements are refined based on what's learned from each sprint.
Works when: the product is being discovered alongside the users. Requirements change. The team is learning what to build.
Fails when: there's no clear product direction and sprints become random feature addition without strategic coherence. Also: open-ended sprint billing is expensive when there's no defined endpoint.
The fixed-scope hybrid: RCB Software uses milestone-based delivery: defined deliverables at each phase (MVP, Phase 2, Phase 3). Not pure waterfall (flexibility exists within phases) and not pure sprints (total cost and timeline are fixed). The structure that works for buyers who need budget certainty and milestone accountability.
Project management approach that matches the degree of requirement uncertainty — iterative sprints for evolving products, fixed-scope milestones for defined deliverables
Milestone-based delivery with fixed scope and price. Clear deliverables at each phase. Not hourly sprints.
One honest number to start.
Fixed-scope, fixed-price. The number below is the starting point — final scope is built from your brief.
Project management approach that matches the degree of requirement uncertainty — iterative sprints for evolving products, fixed-scope milestones for defined deliverables
Three steps, every time.
The same repeatable engagement on every project. No surprises, no mystery, no billable ambiguity.
Brief & discovery.
We send you questions, then get on a call. Output: a written scope with every step, feature, and integration listed.
Build & ship.
Fixed schedule, weekly reviews. No scope creep unless you change the scope — and if you do, we reprice it transparently.
Warranty & retainer.
30-day warranty on every launch. Most clients stay on a monthly retainer for ongoing features and maintenance.
Why Fixed-Price Matters Here
The sprint model with hourly billing creates open-ended cost. Fixed milestones create predictability.
Questions, answered.
Yes. The internal product cadence (two-week sprints, standups) can coexist with milestone-based delivery from an external developer.
Milestone-based projects have change order processes. Priority changes that stay within scope are absorbed. Changes that add scope are priced as additions.
Tell Ryel about your project.
Describe what you’re building and what outcome you need. You’ll have a written, fixed-price scope within the week.