Free expert review. Get UX insights for your SaaS. Book a Free 30-minute review
Free expert review. Get UX insights for your SaaS. Book a Free 30-minute review

Software Development for B2B SaaS

Software development at lightning speed

Senior humans plan and review. Managed AI agents do the heavy lifting. You see every change running before you accept it. Pay only for code that ships.

Trusted by 80+ SaaS companies

Building got faster.
Shipping didn't.

  1. Problem

    AI agents shipping unreviewed code

    Implication

    One bad merge wipes a database or ships a liability

  2. Problem

    Agencies that bill hours, not outcomes

    Implication

    You pay whether the work ships or not

  3. Problem

    In-house dev teams stuck in the backlog

    Implication

    Features pile up. Roadmap slips.

What we can do for you

From a fresh MVP to bug fixes and security patches on a live product.

Build a new product

Scaffold and deploy an MVP from zero. From idea to production code in about a week.

Ship new features faster

Your team stays focused on the roadmap. We build the features that keep piling up alongside them.

Fix bugs at scale

Agents scan your codebase to flag bugs and performance bottlenecks. Senior review before any fix ships.

Security review

Find vulnerabilities before someone else does. Agents scan, seniors verify, you decide what to patch.

From idea to shipped code in 5 steps

Discovery call

1. Discovery call

We learn your product, stack, and backlog. We define scope and identify the highest-leverage work to ship first.

Scoping and estimate

2. Scoping & estimate

We map out the feature set, break it into shippable units, and give you a fixed cost per deliverable before work starts.

Development

3. Development

Agents do the heavy lifting. Senior developers architect, review every change, and keep the codebase clean.

Live preview and review

4. Live preview & review

You click through a working build before anything merges. Feedback goes in, changes come back fast.

Ship and iterate

5. Ship & iterate

Approved changes merge to your branch. We track what shipped and queue the next round.

Discovery call Scoping and estimate Development Live preview and review Ship and iterate

What you get

A managed development workflow that bills only when code ships.

Deliverables
  • Senior human review on every change before it reaches your branch
  • Live preview environment per feature
  • Pay-as-you-ship pricing.
  • Every change lands in your repo. You own the code.

Our numbers

2 week

from kickoff to first shipped feature

80+

B2B SaaS products we've worked on

4.9

stars on Clutch

How we work

Two ways to build
the right thing

AI handles the faster. We handle the right. Pick the path that fits how your team wants to move

Why teams choose Donux

...over hiring, agencies, or vibe-coding

Strategy + execution

Senior humans plan and review. Managed AI agents ship code fast. You get senior thinking and shipping speed without choosing between them.

Pay only for what ships

No retainer. No hourly billing. If the change doesn't land, you don't pay for it.

Experience

10+ years building products. 80+ SaaS companies. 15+ products launched. We know what works.

Senior review on every change

Agents draft, seniors review. Nothing untested or AI-slop reaches your main branch.

Use cases we cover

Want a specific idea of what we do as part of this service?
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Our clients say

They consistently push the project forward. Their work helped achieve an increase in downloads and positive feedback from users.

Nikos Kottaropoulos

Nikos Kottaropoulos

CEO , Balanced

Creating our SaaS website right away helped us with a better final conversion rate.

Hernán Solima

Hernán Solima

COO , Fluida

Case studies

F.A.Q.

Who is this for?
B2B SaaS founders, CTOs, and product leads who need code shipped without hiring more developers or committing to an agency retainer.
How is this different from a traditional agency?
Agencies bill hours whether or not the work ships. We bill only for code that lands in your repo. If a change doesn't make it through review, you don't pay for it.
How is this different from vibe-coding with Cursor or v0?
Vibe-coding tools hand the output straight to you with no review layer. We use managed agents and senior developers who check every change for architecture, edge cases, and security before it reaches your branch.
Do I need to connect my existing repo?
Yes, we work inside your existing GitHub or GitLab repo. If you're starting from scratch, we can scaffold one for you as part of the discovery call.
What does the discovery call cover?
We learn your product, current stack, and the highest-leverage work to tackle first. You'll leave with a scope breakdown and a fixed cost per deliverable before any work starts.
What if we already have an in-house dev team?
We work alongside them. Your team keeps ownership of the high-judgement calls. We absorb the backlog that keeps slipping. Reviews and merges stay with you.
Who owns the code?
You do. The code lives in your repo from the moment it ships. No lock-in, no licensing strings.
Can you also handle design and product strategy?
Yes. Software development pairs naturally with our Product Design and Product Management services if you need the full loop covered.

We'll help you build the right product, faster

The first step is a quick chat.