Hire TypeScript developers
Senior TypeScript developers across frontend and backend who write production code in strict mode and use the type system to surface edge cases before they ship. The assessment checks whether they let types catch what the model missed, as well as whether the code compiles.
01
AI code compiles but hides type errors
Copilot and similar tools produce TypeScript that passes a quick read but quietly widens types or drops null checks. Engineers now need to check generated code against the schema as well as the screen.
02
Strict mode is the minimum bar now
Teams running AI-assisted development found that permissive tsconfig settings let generated errors accumulate unseen, so strict and noUncheckedIndexedAccess have become standard on serious projects. An engineer who still reaches for 'any' to silence the compiler is a liability in that workflow.
03
Types now document intent as well as shape
As codebases grow faster with AI assistance, types have become the primary way engineers communicate constraints to teammates and to the model itself. Engineers who treat them as optional overhead slow down every subsequent generation step.
How we assess TypeScript developers
Every engineer works through a fundamentals assessment with AI tools switched off and a second assessment with their own agents running. For TypeScript developers, these criteria carry the most weight.
- Debugging
In the fundamentals assessment, engineers get a TypeScript codebase with a runtime error that a weak type definition let through, and the assessor watches whether they tighten the type or add a runtime guard.
- AI output verification
In the session with their own agents on, engineers generate a typed API client and then audit it for inferred 'any', missing discriminated unions and incorrect nullability before the code reaches the integration layer.
- Spec-driven development
Assessors check whether they write or refine the type signatures and interfaces before prompting for implementation, so the type contract serves as the spec instead of prose requirements.
Hiring with Miyagami
- One senior engineer, full-time, at a fixed monthly fee
- Employment, payroll and compliance included, no recruitment fee
Timeline
- Three-month minimum
- Wrong fit: we replace at our cost
How to review AI-generated code
Reviewing AI-generated code changes some of what reviewers look for and keeps the rest. This entry covers both, plus the specific failure modes to check for.
How do you test software you didn't design
Standard coverage metrics mislead when you test software you didn't design. This entry explains what engineers should do instead when reviewing AI-generated code.
What is a coding agent
A coding agent is an AI system that writes, edits, runs and debugs code autonomously across multiple steps, without a human directing each action.
Questions about hiring TypeScript developers
How senior are the TypeScript developers you place?
They're senior, with 6+ years' experience on average, and they've shipped and maintained production systems in TypeScript. Every one has passed both assessments, and you see both scorecards before you meet them.
How do you test TypeScript specifically?
In the first assessment, they work in a real TypeScript codebase with AI tools off, handling strict mode violations, narrowing union types and debugging type errors under pressure. The second assessment adds their own AI agents, and the assessor checks whether generated code gets properly typed before they accept it.
How quickly can a TypeScript developer start?
You'll have a shortlist within five working days of briefing us, and most engineers go from shortlist to first commit within three weeks, including onboarding. The timeline is the same for frontend, backend and full-stack roles.
What does a TypeScript developer cost?
You pay a fixed monthly fee of €5,600 to €8,000 per full-time engineer, with employment, payroll and compliance included and no recruitment fee. The pricing page compares it with the all-in cost of a senior local hire in your country. Engagements are full-time with a three-month minimum, and if a placement doesn't work out, we replace them at our cost.
Do they work in our tools and repositories or bring their own?
They work in your codebase, repositories, CI pipeline and communication tools from day one. They bring their own AI tooling into your workflow where it fits, and all their work runs inside your environment.
Get a shortlist within five working days
You share the roles and the stack in a short form or a thirty-minute call. Within five working days you get named senior engineers to review, each with both scorecards.
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