Service

Build Engagement

Fixed scope, fixed price engineering. Greenfield product, platform modernization, or a feature your team has been blocked on. End to end ownership through delivery and handoff.

From €30K 4 to 12 weeks Capped at €60K 20% milestone holdback

Who this is for

Founders or engineering leaders with a defined product, feature, or platform that needs a senior engineer who owns the work end to end and ships it without the agency overhead.

  • Greenfield MVP. Idea has been validated. Time to build the thing properly.
  • A feature your team keeps deferring because it sits across two squads.
  • Platform modernization that needs a senior pair of hands without disrupting the existing team.
  • Replatforming or rewriting a critical piece that has accumulated load-bearing technical debt.

What is included

  • Architecture and design review at SOW. Stack, data model, deployment topology agreed before code starts.
  • Implementation, end to end. Frontend, backend, data, ops. Whatever the scope requires.
  • Production deployment with monitoring, alerting, and rollback paths.
  • Documentation: architecture decisions, runbooks, key configuration.
  • Handoff to your engineering team with knowledge transfer sessions.
  • 4 weeks of bug fix support after launch.

What is not included

  • Open ended scope. The SOW defines what is in and what is out. Scope changes are quoted as additions or moved to a follow-on engagement.
  • Ongoing feature development beyond the 4 week post-launch window. Available separately as a follow-on engagement or under Advisory Retainer.
  • Hiring or onboarding new engineers as part of the engagement. The build is delivered by Sagar plus AI tooling, with senior contractors brought in only on specific scopes when required.

How the engagement runs

Week 0
SOW agreed
Scope, milestones, success criteria, and handoff terms locked. 50% on signing.
Week 1
Architecture and setup
Decisions captured in writing. Repo set up. Environments, CI, monitoring scaffolded.
Mid engagement
Iterative builds
Working software at the end of every week. Demo and feedback. Adjust within scope.
Final week
Production and handoff
Deploy, runbook, knowledge transfer. 30% on production deploy. 20% holdback released after the 4 week support window.

Frequently asked

How are you priced versus a German agency?

Lower because there is no agency overhead, no project manager layer, no junior team. The work is delivered by a senior engineer with 13+ years of experience. Pricing reflects scarce judgment and shipped outcomes, not headcount-billed hours.

Why is there a hard ceiling at €60K?

Above that, the engagement starts to look like a small agency contract, which is not what this is. If the work needs more than €60K, it should probably be split into phases or staffed differently.

What is the 20% milestone holdback?

The final 20% of the engagement fee is paid after the 4 week post-launch window closes without major issues. It signals shared accountability and gives the buyer real recourse if something is broken at handoff.

What happens if my scope changes mid-engagement?

Either the change fits within the existing scope and is absorbed, or it is quoted as a small add-on, or it becomes a follow-on engagement. The SOW sets the boundary clearly so there are no surprises on either side.

Can you bring in additional engineers?

For specific scopes, yes. Senior contractors only, never junior. The engagement remains scope-locked and Sagar remains the single point of accountability.

Talk through a build

30 minute call. Describe the system, the constraints, the deadline. By the end of the call you will know whether the engagement makes sense and what the scoped SOW would look like.

Book a 30 minute call →