Hire TypeORM developers

Why Hire TypeORM Developers?

TypeORM developers specialise in building high-performance and scalable back-end applications using Node.js and TypeScript. As one of the most popular Object-Relational Mappers (ORMs) for TypeScript, TypeORM allows teams to manage databases with clean, type-safe code. Hiring experienced TypeORM developers ensures your APIs, services, and databases are efficient, secure, and maintainable—essential for modern SaaS platforms, fintech systems, and enterprise-grade applications.

Whether you’re integrating PostgreSQL, MySQL, or SQL Server, a TypeORM developer bridges database modelling and application logic. They write code that scales, optimises queries, and maintains data consistency across services and microservices.

Search Intent & Keywords

Visitors often search for: hire TypeORM developers, TypeORM Node.js developers, backend TypeScript engineers, PostgreSQL with TypeORM, TypeORM freelance developers, hire Node.js TypeORM developer, TypeORM vs Prisma, and TypeORM database performance. Long-tail modifiers include: enterprise Node.js ORM developer, TypeORM project setup, migrate to TypeORM, and TypeORM with NestJS.

Core Responsibilities of TypeORM Developers

  
• Design and implement database models and schemas using TypeORM entities and relations.
  
• Develop and maintain RESTful and GraphQL APIs built on Node.js/TypeScript frameworks such as Express or NestJS.
  
• Optimise SQL queries, handle migrations, and maintain data integrity through transactions and indexes.
  
• Integrate authentication and authorisation flows using JWT, OAuth2, or custom middlewares.
  
• Collaborate with front-end teams through clearly defined API contracts and versioned endpoints.
  
• Ensure security compliance, input validation, and data sanitisation for all persistence layers.
  
• Automate database migrations and seeding across multiple environments (dev, staging, production).
 

Essential Technical Skills

  
• Languages & Frameworks: TypeScript, JavaScript (ES6+), Node.js, NestJS, Express.
  
• ORM Expertise: Deep understanding of TypeORM entities, decorators, repositories, and query builders.
  
• Databases: PostgreSQL, MySQL, MariaDB, SQLite, and Microsoft SQL Server.
  
• Architecture: Clean Architecture, Domain-Driven Design (DDD), microservices, and modular monoliths.
  
• Testing: Jest, Supertest, Mocha, Chai—testing ORM logic and API endpoints.
  
• DevOps Integration: Docker, Kubernetes, CI/CD pipelines, environment configuration, and database migration automation.
  
• Security: SQL injection prevention, ORM-level sanitisation, encryption at rest and in transit, and secrets management.
 

Interview Framework for TypeORM Developers

  
1. Architecture Discussion (15 min): Ask about how the candidate structures entities, handles relationships (one-to-many, many-to-many), and prevents circular dependencies in TypeORM.
  
2. Hands-On Challenge (25 min): Request a short demo of creating TypeORM entities for an e-commerce system (User, Order, Product) with relations and migrations.
  
3. Performance Optimisation (15 min): Discuss strategies for handling lazy loading, joins, and query optimisation using the QueryBuilder API.
  
4. Transaction Management (10 min): Ask how they implement transactional logic across multiple tables to ensure data consistency.
  
5. Security & Testing (10 min): Evaluate their experience writing secure data access layers and integration tests for persistence logic.
 

Budget & Hiring Expectations

TypeORM developers typically fall under the same category as senior back-end or full-stack TypeScript developers. Rates depend on seniority, project scope, and familiarity with related tools:

  
• Mid-level developers (2–4 years): £40–£65/hour or $50–$80/hour, handling CRUD apps, migrations, and integrations.
  
• Senior developers (5+ years): £75–£120/hour or $90–$150/hour, capable of architecting scalable back-end systems and optimising ORM usage.
  
• Specialists: Developers who combine ORM mastery with NestJS, GraphQL, or microservices experience may command premium rates.
 

14-Day Onboarding Roadmap

  
1. Define database schema and ERD diagrams for your core entities.
  
2. Set up a base project using Node.js + TypeORM + PostgreSQL, ensuring ESLint and Prettier configuration.
  
3. Configure migrations, seed scripts, and a staging environment with Docker containers.
  
4. Integrate authentication (JWT/OAuth) and configure access control middleware.
  
5. Establish CI/CD pipelines for automated testing and schema deployment.
 

Red Flags When Hiring TypeORM Developers

  
• Relies solely on ORM magic without understanding SQL fundamentals or query plans.
  
• Does not implement migrations or version control for database changes.
  
• No experience with transaction management or concurrency control.
  
• Writes business logic directly inside entity classes or controllers (violates separation of concerns).
  
• Cannot explain trade-offs between TypeORM, Prisma, and Sequelize.
 

Key Interview Questions

  
• “How would you optimise TypeORM queries for large datasets?”
  
• “Explain the difference between eager and lazy loading in TypeORM.”
  
• “What’s your approach to handling migrations in CI/CD environments?”
  
• “How do you manage transactions when multiple repositories are involved?”
  
• “When would you use a custom repository over the default Repository API?”
 

Related Lemon.io Pages

  
• Node.js Developer Job Description – essential for projects built on Node back-ends.
  
• TypeScript Developer Job Description – for teams seeking type-safe development across front and back ends.
  
• Full-stack Developer Job Description – when you need engineers who can work on both database and front-end integration.
  
• Back-end Developer Job Description – for broader API and system architecture roles.
 

FAQ: Hiring TypeORM Developers

Ready to Hire TypeORM Developers?

Get matched with vetted TypeORM developers in under 48 hours. Lemon.io connects you with experienced TypeScript engineers who can design scalable back-end architectures, handle complex data models, and deliver production-ready APIs efficiently.