Senior developers who join your standup this week.
TetraSol staffs vetted, English-fluent developers directly into your team (full-stack, AI/ML, DevOps and QA), matched within days and backed by a trial period and a replacement guarantee.
Specialists, not generalists stretched thin.
Full-Stack
Angular, React or Next.js paired with .NET or Node: end-to-end feature ownership.
Frontend
React, Angular and TypeScript specialists focused on interface performance and UX polish.
Backend
.NET Core, Node.js and FastAPI engineers who own APIs, data models and system architecture.
Mobile
Flutter and React Native developers shipping cross-platform apps to the App Store and Play Store.
AI / ML
LangChain, LangGraph and RAG engineers who can build and maintain your AI features directly.
DevOps
CI/CD, cloud infrastructure and deployment pipelines on Azure, GCP and standard Linux hosting.
QA
Manual and automated testing engineers who catch regressions before your users do.
UI/UX
Product designers who hand off implementation-ready Figma files, not just mockups.
Seniority-based pricing, published up front.
Monthly rate per developer, full-time. Part-time and team-as-a-service pricing scales proportionally.
1–3 years experience. Best paired with an in-house or TetraSol lead for review.
3–5 years experience. Owns features independently with light oversight.
5–8+ years experience. Owns architecture decisions and mentors juniors on the team.
8+ years experience. Sets technical direction and can run a squad of developers.
Structured to fit how you actually hire.
Full-time
One developer, dedicated to your team, 40 hours a week.
Part-time
20 hours a week, right-sized for ongoing maintenance or a second project.
Team-as-a-service
A full squad (lead, developers, QA) delivered as one managed unit against your roadmap.
Time & materials
Billed hourly for scoped, short-term work without a monthly commitment.
2-week trial
Every engagement starts with a paid trial period before you commit long-term.
From brief to onboarded, in about a week.
Tell us the role
Share the stack, seniority and team fit you need on a short call.
We shortlist
2–3 matched developer profiles from our bench within 3–5 business days.
Interview & trial
You interview directly, then start a 2-week paid trial with your chosen developer.
Onboard with guarantee
Continue full-time with backup coverage and a free replacement if it's ever not a fit.
How we compare.
| Factor | TetraSol | Marketplace platforms | Direct hire | Cheap offshore |
|---|---|---|---|---|
| Time to shortlist | 3–5 days | 1–2 weeks | 4–8 weeks | Days, unvetted |
| Vetting | Senior-led technical review | Platform-run tests | Your own process | Often none |
| Trial period | 2 weeks, paid | Varies | Probation period | Rare |
| Replacement guarantee | Free replacement | Platform-dependent | Re-run full hiring | Rare |
| English fluency | Verified, daily standups | Varies widely | N/A | Often a barrier |
Common questions
How fast can we start?
Most clients interview shortlisted developers within 3–5 business days of the intro call, and start the 2-week trial the following week.
What happens if the developer isn't the right fit?
You get a free replacement, no questions asked. That's the point of the trial period and the guarantee.
Who manages the developer day-to-day?
You do: they join your standups, your sprint tooling and your reporting lines, just like an in-house hire. TetraSol handles payroll, contracts and backup coverage.
Can a developer convert to a direct hire later?
Yes, by agreement: this is covered in the staff augmentation contract rather than treated as poaching.