TypeScript Consulting Services
SysGears provides TypeScript consulting services to businesses planning or implementing development, migration, and modernization projects. Our TypeScript consultants will help your team resolve complex engineering problems, make sound technical decisions, and bring your project back on track.
Why TypeScript Expertise Matters in 2026
21-40%
of organization’s IT spending is absorbed by technical debt
45%
of AI-generated code introduces security vulnerabilities without proper verification
78%
YoY growth in new TypeScript repositories and #1 language on Github by monthly contributors
Only 6%
of developers use plain JavaScript
Sources: Deloitte, Cloud Security Alliance, GitHub’s Octoverse, Infoq
When Should You Hire a TypeScript Consultant?
TypeScript is a statically typed superset of JavaScript that supports tighter integration with your editor, allowing you to catch code errors early and make large codebases easier to maintain. In recent years, its popularity has significantly grown, making it one of the most widely used languages for AI-assisted engineering.
However, the larger your codebase becomes, the more challenges it may bring. And when those challenges outgrow your team’s expertise, external consultants can provide an unbiased perspective, uncover root causes, and suggest ways forward. Opt for our TypeScript advisory services if:
- You are planning a large-scale JavaScript-to-TypeScript migration
- Your ongoing migration project creates recurring blockers and accumulates technical debt
- Your current app architecture is difficult to maintain and scale
- You need to solve TypeScript-specific issues in React, Node.js, NestJS, or similar stacks
- You need to review AI-generated code for weak typing, architectural inconsistencies, and maintainability risks
SysGears in Numbers
16+
years in software development
350+
corporate customers across various industries
40+
ongoing projects
110+
team members
Our TypeScript Consulting Services
TypeScript Migration Consulting
If you seek to migrate your entire JavaScript codebase to TypeScript or integrate TypeScript into your legacy codebase, engage seasoned TypeScript consultants before moving forward. We will carefully review your existing code patterns, analyze dependencies and third-party libraries, assess risks, and identify prospective edge cases. As a result, you will receive a tailored, actionable strategy for gradual JS-to-TS migration with minimal disruption to ongoing releases and your business operations.
TypeScript Architecture Review
Whether you’re selecting an architecture for your new project or seeking to optimize your existing app, SysGears can help you design an extensible, maintainable, and cost-efficient solution. We review your requirements, current architecture decisions, and TypeScript practices; weigh alternatives against your business needs and available resources; and recommend an architecture that balances quality, longevity, and engineering overhead.
TypeScript Performance Tuning
SysGears’ TypeScript consultants help resolve performance bottlenecks that can become increasingly difficult to fix as your TypeScript codebase grows. Whether you are dealing with slow builds, type-checking delays, excessive memory usage, or runtime performance issues, we first identify root causes. Only afterward, do we help you select appropriate optimization techniques that suit your case best.
TypeScript Code Audit
Hire an experienced TypeScript consultant from SysGears to identify weak typing, duplicated logic, outdated dependencies, technical debt, and maintainability issues in both human-written and AI-generated codebases. After a TypeScript code audit, you receive a findings report along with a prioritized remediation plan.
Security Audit for TypeScript Codebases
Our TypeScript consultancy team can identify potential vulnerabilities in your app’s architecture, authentication and authorization, secrets management, dependencies, and security configuration — including issues introduced or overlooked during AI-assisted TypeScript development.
CI/CD Integration Consulting
We can help you introduce DevOps practices into your SDLC and build CI/CD pipelines to automate builds and testing, making deployments faster and safer. We can provide technical guidance for your team or implement recommended changes ourselves.
Why Choose SysGears for TypeScript Consulting Services
Senior TypeScript Expertise Cultivated Since 2012
Our consultants are senior TypeScript experts whose talent has been cultivated through our internal quality standards. SysGears continuously invests in their professional development, so you get TypeScript engineers able to contribute to your project on a strategic level. Our service quality is also recognized by clients on platforms such as Clutch and GoodFirms.
Rich Experience Combined with Business-First Mindset
We rely on in-depth TypeScript expertise, cross-industry experience spanning over 16 years, and sharp business reasoning. This combination allows us to quickly integrate with your project context, spot non-obvious risks, and provide relevant recommendations matching your goals and resources.
Involvement in a Global Developer Community
SysGears supports employees developing their own open source initiatives and contributing to existing open-source projects. This allows our engineers to understand technologies at a deeper level. Among our landmark projects are the creation of webpack-virtual-modules and Apollo Universal Starter Kit, as well as contributions to Yarn modern, all actively used across the JavaScript ecosystem. Check our GitHub page to see more of our open-source work.
Flexible Cooperation Models
SysGears operates across three collaboration models. You can hire an individual TypeScript consultant on both short-term and long-term bases; you can engage a dedicated consulting team if you need tech advice on multiple project aspects; or you can fully outsource your project to our cross-functional team. Regardless of the selected model, we can flexibly adapt to your evolving needs.
50,000+
developers all over the world trust our open
source contributions to Yarn Modern –
a JavaScript package manager
Our Selected TypeScript Projects
A wellness startup partnered with SysGears to enhance and scale their AI-powered application that analyzes dreams and helps users improve their emotional well-being. SysGears helped the client develop an application scaling strategy and implement new features, including OpenAI model integration for automated dream interpretation and a live chat enabling 24/7 communication with certified therapists. To simplify global expansion, we implemented a flexible localization system that allows instant language updates without redeployment.
SysGears built a cross-platform TypeScript app that connects drivers and passengers taking the same route, helping them save costs and reduce carbon emissions. In particular, our team created and implemented a unique location-based algorithm that efficiently matches drivers with potential commuters. Built with TypeScript and React Native, the mobile application provides a unified codebase for iOS and Android devices. Our TypeScript developers implemented a modular architecture and reusable components to enhance maintainability, scalability, and long-term reliability as the application evolves.
SysGears developed an all-in-one platform that helps freelancers manage time, income, and clients efficiently. Our TypeScript engineers built a modular architecture for fast iteration and integrated Stripe Connect and Google Calendar. We developed features that let freelancers manage their schedules, showcase their services, track their earnings, and analyze performance. With full localization, multi-currency support, and analytics tools for freelance business, omni.day is equipped to support seamless international expansion and deliver an optimized, user-focused experience for freelancers worldwide.
What Our Clients Say
5.0
“The overall team was great, the culture of being helpful and going out of their way to make sure we were taken care of. The team members that were assigned to us and worked with were really amazing, and it felt as if they were part of our team.”
Sohrab Tellaie
Founder, omni.day
5.0
“Since the initial engagement, SysGears’ team has been professional and responsive to client needs. They bring a personal touch to the project and have proven to be highly competent.”
Adam Wood
Founder & CEO, CertifiedBy.com
5.0
“SysGears has been an amazing partner in getting my project off the ground. Not only are they extremely technically skilled, they have excellent procedure and are able to think critically about the problems I’ve been addressing.”
Joseph Corey
Founder & CEO, Subspace
As your application grows, our TypeScript consultants help ensure it remains scalable, maintainable, and aligned with your goals.
Our TypeScript Technology Stack
Languages and Core Frameworks
TypeScript
Node.js
React
React Native
Express
Next.js
NestJS
Build, Bundling, and Transpilation
Vite
Webpack
tsc
ts-node
esbuild
SWC
Babel
Monorepo and Package Strategy
Nx
Turborepo
pnpm
npm workspaces
Yarn
API Design, Contracts, and Validation
REST
GraphQL
OpenAPI
Swagger
JSON Schema
Zod
Joi
Yup
class-validator
Data, Caching, and Messaging
Prisma
TypeORM
PostgreSQL
MySQL
Mongoose
MongoDB
Redis
RabbitMQ
Testing and Quality Gates
Jest
Vitest
Playwright
Cypress
Testing Library
ESLint
Prettier
Observability and Runtime Safety
OpenTelemetry
Pino
Winston
Prometheus
Grafana
Sentry
Security and Dependency Health
OWASP ASVS
npm audit
Dependabot
Snyk
OPA
Conftest
Sigstore
CI/CD and Environment Management
GitHub Actions
GitLab CI
Docker Compose
Terraform
What Our TypeScript Consulting Process Looks Like
Understanding Your Needs
At the start, we need to define the consulting scope. To do so, we talk to you and your team to discover business objectives behind your consulting request as well as technical challenges you need to resolve. Important: to protect your IP, an NDA and a Service Agreement are signed before you reveal any confidential project details.
Assessing Technical Context
Next, our TypeScript experts deep dive into challenges you’re facing through a careful architecture evaluation, codebase audit, or targeted performance, security, or maintainability assessment — depending on the nature of your request. At this stage, we identify risks, implementation constraints, and improvement opportunities.
Providing Recommendations
Following the assessment, we provide our recommendations in the form of architecture advice, TypeScript migration guidelines, or a legacy app modernization strategy. Our consultants also deliver an implementation plan, detailing main steps, risks to consider, and expected results.
Implementing Changes (Optional)
If you need implementation assistance, we can expand our services beyond consulting. Our engineers can provide both technical guidance and enhance your team’s capacity during migration, modernization, and scaling.
Other Consulting Services We Offer
FAQ
How can TypeScript benefit our existing JavaScript project?
The key benefit of TypeScript is that it can highlight unexpected behavior in your code, allowing you to catch errors early in the editor or in the CI/CD pipeline. As a result, your application becomes easier to maintain and more robust as it grows in complexity.
Introducing TypeScript to an existing JavaScript project requires a careful approach. That’s why involving an experienced consulting team like SysGears may prevent costly errors caused by the lack of relevant expertise. We have successfully launched hundreds of TypeScript projects, including ones built from scratch with TS and ones involving incremental TypeScript migration.
What does a TypeScript codebase audit cover, and what do we get at the end of it?
The scope of a TypeScript codebase audit depends on your individual needs, but it typically covers type errors, code quality and maintainability issues, security flaws, and performance bottlenecks. The result is a set of tailored improvement recommendations and an actionable plan, with steps prioritized by business impact and implementation effort.
TypeScript consulting vs. hiring a TypeScript developer — which do we need?
A TypeScript consultant is usually a senior specialist with years of practical engineering experience, knowledge sharing, and advising, so involving them fits best if you need strategic-level assistance, such as with architecture, modernization, or migration decisions. Hiring a TypeScript developer is a better fit if you need implementation assistance: feature expansion, code refactoring, debugging, or app maintenance.
When should we bring in a TypeScript consultant?
SysGears’ consultants can join your initiative at different stages, whether you are deciding on the architecture design for your new project, optimizing your current app for scaling, or modernizing your legacy JavaScript codebase. TypeScript advisory services are particularly relevant for teams that plan JavaScript-to-TypeScript migration while lacking hands-on experience migrating large codebases to TypeScript. In this case, the earlier the consultant enters the project, the better.
How much does it cost to hire a TypeScript consultant?
In the US market, TypeScript consulting firms charge from $150 to $200 per hour for their consulting services. In Europe, TypeScript consulting costs typically range from $40 to $80 per hour.
SysGears is a Europe-based TypeScript consulting company whose engineers have hands-on TypeScript engineering experience across a multitude of industries. We use transparent pricing and work on a time-and-materials basis, meaning you pay for the exact amount of time our consultants spend on your project.
How do we adopt TypeScript incrementally without freezing feature delivery on a large JavaScript codebase?
The commonly accepted approach is to migrate JavaScript to TypeScript gradually, rather than opting for a big-bang rewrite. In particular, to keep feature delivery on track, keep JavaScript and TypeScript running together with allowJs, rename files from .js to .ts in small batches, and require TypeScript for new code. Start with low-risk files, use JSDoc and typed adapters for legacy code, preserve existing tests and builds, and enable strict mode gradually.
Every migration project has individual risks and dependencies to be considered at the planning stage. SysGears’ consultants will develop a migration strategy tailored to your use case, minimizing SDLC disruptions.
Can you help with specific TypeScript challenges in our framework (React, Node.js, etc.)?
Yes. Our TypeScript consultants have extensive experience building TypeScript+React and TypeScript+Node.js applications. We can resolve framework-specific challenges like typing React props, state, and hooks; designing reusable components; typing APIs and middleware in Node.js; and resolving third-party library type issues. Whatever challenges you face, SysGears can help you find an optimal solution.
Boost your business with custom software
Tell us about your business needs and we’ll suggest a solution
Thank you!
We have received your request and will get back to you within 1 business day.
