Mixvoip — Luxembourg
Embedded Full-Stack Pod at Mixvoip — Three Years and Counting
- 2 senior full-stack
- Embedded engineers
- 3 years, ongoing
- Engagement length
- Luxembourg (CET)
- Timezone
- Active, native-team integrated
- Status
Project details
The Challenge
Mixvoip is one of Luxembourg's established Cloud PBX, SIP trunk and managed-IT providers, serving business customers across Luxembourg, Belgium, Germany and France. As demand on the platform grew, Mixvoip's native engineering team needed more delivery capacity — but in a very specific shape. They didn't want a vendor delivering a fixed-scope project; they wanted senior engineers who would sit inside the team, understand the domain, and stay long enough for that knowledge to compound.
The brief was straightforward: provide engineering capacity that boosts the native team's productivity without diluting their identity, working Luxembourg hours, integrated into the same process the rest of the team uses.
Our Approach
We placed two senior full-stack engineers inside Mixvoip's engineering function. Both are timezone-aligned to Luxembourg working hours, participate in the same standups and planning rituals as Mixvoip's native team, and ship through the same code-review and deployment process. From the inside, the engagement looks and behaves like an extension of the in-house team.
What's unusual is how we've kept it that way over a long horizon. The same two engineers have been on the engagement for three years. Mixvoip's tech leads have never had to re-onboard a replacement, re-explain the domain, or rebuild trust with a new hire from our side. Continuity is the entire product here.
Day to day the pod operates on whatever Mixvoip's roadmap needs most:
- Native-team integration — same standups, same backlog, same review and deployment process. No parallel project tracking.
- Timezone overlap — full Luxembourg working-hours coverage, not a partial overlap that frustrates the in-house team.
- Domain continuity — three years in, the engineers know the platform's history, edge cases, and unwritten rules.
- Code-review reciprocity — the embedded engineers review Mixvoip's PRs and vice versa; the bar is one bar, not two.
The work itself is whatever the native team most needs delivered in a given quarter. The engagement isn't defined by a deliverable; it's defined by sustained, senior-level capacity inside a team that wanted to keep its own identity.
The Outcome
Three years in, the engagement is still ongoing. Both engineers are still on it. Mixvoip's native team has shipped roadmap they wouldn't have had capacity to ship otherwise — the productivity lift compounds because the embedded engineers have become long-tenured contributors who know the codebase as well as anyone.
The relationship works because there's no "us versus them" — there's only one team. That's the only shape of staff augmentation we believe in, and Mixvoip is the case study for why.
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