API Development Specialists: When to Hire REST vs GraphQL Developer

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Contemporary software products are built with APIs. When developing a SaaS service, a custom business solution, a mobile application, marketplace, Fin-tech, developer platform, APIs dictate data flows between different systems and affect speed and efficiency of product development.

When companies begin to grow, there comes a point when engineering management faces a tough choice of hiring either a REST API developer or GraphQL specialist.

From a technical standpoint, this choice might appear to be a simple task, however, its real importance lies much deeper. Hiring an incorrect API developer can slow down the development process, increase maintenance costs and complicate further integration. Hiring a qualified specialist in particular technology can speed up product delivery, boost developer productivity and provide a good starting point for further progress.

REST is still considered to be a leader in enterprise integrations, in creation of public APIs and microservices architecture. In contrast, GraphQL is increasingly gaining popularity among enterprises due to increased flexibility in exchanging data between several applications or devices.

This is one of the challenges that CTOs, engineering directors, solution architects, product managers face when choosing the correct type of expertise.

In this guide, we will look at what sets REST developers apart from GraphQL developers, when you should be hiring either one, how to screen your candidates, expected salaries, return on investment factors, or how successful companies organize their API development teams.

The Bottom Line Up Front

Nowadays, most companies are over the REST vs GraphQL debate - the real question is which out of the two gives the best results for the business.

When hiring now you've got options:

• Go for a REST API developer if backend services, talking to other microservices, third party integrations or simple CRUD apps are your main game.
• Get someone with GraphQL skills if you are building a product that needs different front end experiences, mobile optimisation, streams of a customised data feed or APIs that aggregate loads of different services
• If you're building a more serious SaaS platform, a marketplace, enterprise app or AI-powered thing, go for someone who knows both REST and GraphQL.

Industry figures back the hybrid approach. Gartner reckons REST is still #1 because it's super well supported and has loads of tooling out there, but GraphQL is building fast for apps where the front end is the main event and linking up different services is required. They also say GraphQL is the way to go for mobile, untangling messy data and modern app delivery.

You can also take note of a piece of research from Apollo in 2025 that found that loads of big companies are combining REST services with GraphQL because it's just a more sensible way to do it. And if you look at what they're doing with GraphOS, they're making it easy to integrate REST into GraphQL - it seems like where loads of companies are heading.

What Does a REST API Developer Actually Do?

REST API developer creates, implements, and manages resource-oriented APIs using HTTP to connect your application, services, partners, and clients. The job of the REST developer is far from limited to endpoint creation. This professional defines the interaction principles used by your business systems with all other parties.

APIs created by REST developers prioritize predictability and collaboration.

The Core Responsibilities of a REST API Developer

Endpoint Design and Architecture

REST developers create resource-based endpoints that follow standard HTTP conventions.

Examples include stuff like:

• GET /users
• POST /orders
• PUT /products/{id}
• DELETE /subscriptions/{id}

Well-designed endpoints make it a lot easier to maintain the API and provide a consistent experience for API users.

Versioning Strategy

As products change and evolve, APIs have to change too, without breaking any existing integrations.

REST specialists design:

• URL versioning
• Header versioning
• Backwards compatibility policies
• Deprecation strategies

Good version governance stops integration failures and reduces the technical debt that builds up.

Authentication and Security

Security is one of the most critical aspects of API development.

REST developers usually implement:

• OAuth 2.0
• JWT authentication
• API key management
• Multi-factor authorization flows
• Role-based access controls

Their goal is to balance usability with top-notch security.

Documentation

REST APIs rely heavily on good documentation quality.

Developers often create:

• OpenAPI specifications
• Swagger documentation
• API reference guides
• Developer portals
• Integration tutorials

In fact, for many enterprise buyers, documentation quality can make or break adoption.

Performance Optimization

REST specialists optimize API performance by using things like:

• HTTP caching
• ETags
• Pagination
• Compression
• Rate limiting
• Load balancing

These improvements make the user experience better and reduce infrastructure costs.

Common REST Technology Stack

A modern REST developer might work with stuff like:

• Express.js
• FastAPI
• Spring Boot
• Django REST Framework
• ASP.NET Core
• Ruby on Rails API
• Kong Gateway
• AWS API Gateway
• NGINX
• OpenAPI 3.x

The sheer maturity of this ecosystem is one reason REST is still the preferred architecture for many big enterprises.

What Does a GraphQL Developer Actually Do?

GraphQl API creators have a totally unique way of designing APIs compared to the old REST paradigm.

Rather than creating numerous API endpoints that provide the same pre-defined results, GraphQL enables clients to specify precisely the data they require, after which this data will be delivered to them through schema-based architecture.

This innovation provides companies with an unprecedented opportunity to cater to their web applications, mobile applications, partner portals, and other third parties using a single API layer.

Core Responsibilities of a GraphQL Developer

Schema Design

GraphQL developers create schemas that define all the key elements of your API, including:

• Types (what kind of data you're working with)
• Queries (what data can be retrieved)
• Mutations (what data can be created or updated)
• Subscriptions (what happens in real-time)
• Relationships (how data is linked together)
• Validation rules (to make sure the data is correct)

The schema is like a contract between your frontend and backend teams - it keeps everyone on the same page.

Resolver Implementation

Resolvers are the bit that actually figures out where the data is coming from.

GraphQL developers connect the schema to all sorts of sources - databases, REST services, micro services, third-party APIs - and make sure it all works seamlessly.

Resolver performance is super important, because it can really impact how responsive your application feels to users.

N+1 Query Prevention

One of the most common headaches for GraphQL devs is the N+1 problem - where every query makes a separate database call, which can slow things down.

Experienced developers use all sorts of techniques to fix this, including:

• Data Loader
• Query batching
• Resolver optimisation
• Intelligent caching

These are all key to making sure your application performs smoothly.

Real-Time Data Delivery

GraphQL is super handy for making applications that need real-time data - think chat apps, notifications, collaboration tools, live dashboards, and activity feeds.

Federation and Distributed Architecture

As organisations get bigger, they tend to have multiple teams working on different areas of the business.

GraphQL Federation lets you let each team manage their own bit of the schema, while still exposing a unified API layer to the outside world.

As this kind of setup becomes more common, expertise in federation is becoming a really valuable asset.

Common GraphQL Technology Stack

GraphQL specialists often use a range of tools to make their lives easier, including:

• Apollo Server
• Apollo Client
• Apollo Federation
• Relay
• Hasura
• GraphQL Yoga
• GraphQL Mesh
• StepZen

These tools let them build flexible and scalable data access strategies that meet the needs of their organisation.

REST vs GraphQL Comparison

Dimension	REST	GraphQL
API Structure	Multiple endpoints	Single endpoint
Data Fetching	Fixed response payloads	Client-defined responses
Over-fetching Risk	High	Low
Under-fetching Risk	Common	Minimal
Caching	Excellent HTTP caching support	More complex caching strategy
Learning Curve	Easier	Moderate to advanced
Tooling Ecosystem	Extremely mature	Rapidly growing
Performance for Simple CRUD	Excellent	Good
Performance for Complex UIs	Often requires multiple requests	Usually better due to single query
Best Use Cases	Microservices, integrations, public APIs	Mobile apps, SaaS dashboards, API orchestration

REST vs GraphQL Developer: Key Differences

Although both specialists work with APIs, the way they approach the job is totally different.

REST developers think about resources and endpoints - they're building a web of static data.

GraphQL developers think about schemas and data relationships - they're building a dynamic web of data that can be accessed in all sorts of ways.

REST Advantages

REST has been around for ages, and it's got some real advantages, including:

• Mature tooling
• Simple caching
• Broad industry adoption
• Strong enterprise support
• Easier on boarding
• Standardised documentation

GraphQL Advantages

GraphQL is a more flexible way of building APIs, and it's got some real advantages too, including:

• Flexible queries
• Reduced over-fetching
• Better frontend autonomy
• Improved developer experience
• Efficient multi-client support
• Strong support for complex relationships

Neither approach is universally better - it all depends on the architecture requirements of your organisation.

When Should You Hire a REST API Developer?

REST remains the default architecture for many organisations, and it's still a good choice for lots of projects.

You might want to hire a REST specialist if you need stable integrations, predictable contracts, and standardised infrastructure.

Common REST Use Cases

REST developers are great for:

• Public APIs
• Enterprise SaaS platforms
• Payment gateways
• Healthcare applications
• Government systems
• Logistics platforms
• ERP integrations
• CRM integrations
• IoT infrastructures

These are all areas where reliability and interoperability are key.

Signs You Need a REST Specialist

You might need a REST developer if you're dealing with:

• Enterprise clients that require OpenAPI specifications
• Integration projects that are getting stuck
• Micro services that lack consistency
• API versioning that's becoming a nightmare
• Infrastructure that relies on CDN caching
• External developers consuming your APIs

REST Developer Evaluation Framework

When you're hiring a REST developer, you want to make sure they understand the bigger picture, not just the nitty-gritty of endpoint implementation.

Look for candidates who can:

1. Design scalable API versioning strategies.
2. Explain HTTP semantics and idem-potency in a way that makes sense to you.
3. Implement cursor-based pagination.
4. Design OAuth 2.0 permission models.
5. Build secure rate-limiting frameworks.

A good REST developer should be able to talk about architecture as well as implementation.

REST Salary Benchmarks

Right now, it looks like this: Current compensation trends are pointing towards a pretty clear picture -

• Mid-level developers are looking at $107,000 to $124,000
• Seniors are in the $120,000 to $140,000 range
• And lead architects are clearing $140,000 all the way up to $175,000

Working with REST developers based offshore can be a good option too - they tend to cost 40 to 65% less and can bring some pretty valuable expertise to the table.

When Should You Hire a GraphQL Developer?

The truth is, GraphQL specialists become super valuable as soon as your frontend teams start needing more flexibility and your data gets a lot more complicated.

Companies that have a bunch of different applications all drawing on the same data also tend to get a lot out of GraphQL.

Common GraphQL Use Cases

Lots of people hire GraphQL developers for these kinds of projects:

• Multi-platform products
• Mobile-first apps
• Developer platforms
• Headless commerce
• Content management systems
• Social apps
• For building backend-for-front end architectures
• Real-time collaboration tools

Signs You Need a GraphQL Specialist

You might want to consider hiring a GraphQL developer if:

• Frontend teams just keep on coming back to you for new endpoints
• Your mobile apps are getting affected with all that extra data
• You've got multiple API calls that are needed to get one screen up and running
• You find yourself dealing with more and more API versions
• Flexibility becomes a key differentiator for you

GraphQL Developer Evaluation Framework

When interviewing candidates, you might want to ask questions like:

1. What would you do to avoid those nasty N+1 query problems?
2. How would you go about securing a multi-tenant schema?
3. What controls would you put in place to keep query complexity under control?
4. How would you handle schema evolution?
5. Have you worked with the Apollo Federation before?

There's a lot more to production-grade GraphQL expertise than just writing resolvers.

GraphQL Salary Benchmarks

The compensation picture looks like this:

• Mid-level: $110,000 - $131,000
• Senior: $131,000 - $160,000
• Lead architect: $160,000 - $200,000 or better

Why the higher salaries? Well, GraphQL talent is just not as easy to come by as REST expertise.

Cost of Hiring REST vs GraphQL Developers in 2026

Average Annual Salary Comparison

Region	REST Developer	GraphQL Developer	Full-Stack REST + GraphQL
United States	$115,000–$160,000	$130,000–$185,000	$145,000–$210,000
Western Europe	$75,000–$120,000	$85,000–$135,000	$95,000–$150,000
Eastern Europe	$45,000–$85,000	$55,000–$95,000	$60,000–$110,000
India & Offshore Asia	$18,000–$45,000	$25,000–$55,000	$30,000–$70,000

Typical Contractor Rates

Region	REST Specialist	GraphQL Specialist
United States	$100–$180/hr	$120–$250/hr
Western Europe	$65–$140/hr	$80–$160/hr
Eastern Europe	$40–$70/hr	$50–$90/hr
India	$25–$45/hr	$35–$65/hr

Choosing Between REST and GraphQL

At the end of the day, the decision should be based on architecture, not just which one is currently popular.

Hire a REST Specialist If

You need public APIs, or enterprise integrations are a top priority, or your infrastructure relies on caching, or micro services communications are your main game, or you’ve got compliance requirements that are super strict

Hire a GraphQL Specialist If

You’ve got multiple client apps that are all consuming the same data, or frontend teams need flexibility, or real-time functionality is a must, or developer experience is a key product differentiator

Hybrid Team - When it Makes Sense

You see a lot of big tech companies running hybrid architectures - for example Shopify, GitHub, Netflix, and Airbnb have all got this.

And what they all have in common is that REST handles the backend services and integrations, while GraphQL powers the client-facing experiences.

This approach gives you the best of both worlds - stability and flexibility.

But, it also requires governance. If you don’t have clear ownership boundaries, you’re likely to end up with schema drift, duplicated functionality, and technical problems.

The Real Cost of Hiring the Wrong API Specialist

The biggest cost isn't the salary - its lost productivity and delayed delivery.

Common Consequences

You know, a capability mismatch can lead to:

• Slower feature releases
• Poor developer experience
• Growing technical problems
• Integration bottlenecks
• Increased maintenance effort
• Reduced customer satisfaction

Take this for example - implementing GraphQL before you’ve got stable backend services in place can just add unnecessary complexity.

Conversely, forcing REST into highly dynamic multi-client environments can create hundreds of endpoints that are a nightmare to maintain.

Business Impact

API architecture can affect:

• Development speed
• Infrastructure costs
• Scalability
• Customer on boarding
• Partner integrations
• Engineering productivity

A poor hiring decision can impact every sprint for years.

Build In-House, Outsource, or Extend Your Team?

Most organizations end up going with one of these three staffing models.

In-House Hiring

Best for:

• Core product ownership
• Long-term strategic initiatives
• High visibility projects
• Knowledge sharing and growth

And so on.

Challenges

• Long and drawn out recruitment cycles
• Increasing costs of attracting and keeping top talent
• The very real risk of losing good people

Dedicated Offshore Teams

Best suited for:

• Rapid scaling
• Cutting costs
• Access to special expertise that would be a stretch to find in house

Benefits:

• Much lower operating costs
• Faster to get set up and started
• All sorts of flexible ways to work together

Hybrid Team Extension

Best for:

• Companies that are really growing and need more engineering support
• Businesses with loads of complex tech stacks to manage
• Companies that have a multi-product platform

This approach lets you combine your own leadership with some outside help that you can count on to get things done.

How Should You Structure an API Team?

First off, the way you set up your team should fit the needs of the architecture

The REST-First Team Model

What it looks like:

• One senior architect who really knows their stuff
• 2 or 4 backend engineers who can get the job done
• Someone who specialises in making sure the documentation is all up to date and clear

Ideal for:

• Large SaaS companies
• Fintech
• Logistics companies that are building big platforms
• Government departments making public APIs

The GraphQL-First Team Model

What it looks like:

• One senior GraphQL expert who really knows the process
• 2-3 other GraphQL developers who can help make it happen
• Some supporting backend engineers who can lend a hand

Ideal for:

• Consumer apps
• Platforms that are mobile first
• Developer tools

Hybrid API Team

What it looks like:

• A principal architect who can lead the team
• People who specialise in REST architecture
• People who specialise in GraphQL
• Some platform engineers who can help bring it all together

Ideal for:

• Series B and above companies
• Companies that are going through a major modernisation of their infrastructure
• Companies that have multiple platforms all working together

Putting together a good API team comes down to making sure you’ve got good governance in place, your documentation is all up to date, you’ve got testing and consistency all locked in.

Future Outlook: 2026-2027

REST is still going to be the standard for enterprise integrations and public APIs

But GraphQL adoption is really picking up pace

Several trends are going to shape what happens with your hiring decisions

GraphQL Federation Growth

As you scale up, you'll be seeing a lot more distributed architectures coming along

To be honest, you're going to need someone on the team who really knows their way around federation

AI-Native API Design

AI is going to start being used a lot more as a tool to consume APIs

This means you're going to need people who understand:

• How to design and structure schemas?
• How to use OpenAPI specs?
• How to make sure your APIs are discoverable?
• How to make your APIs machine readable?

Edge Computing

Cloudflare Workers and edge native architectures are changing how APIs are deployed

Next year, your API people will need to be experts in distributed systems

Hybrid Architectures Become Standard

Most growing companies will be combining REST and GraphQL rather than choosing one or the other

The people who will be most successful are the ones who can work with both paradigms and know when to use each one

Making the Right API Hire

Whether to hire a REST developer or a GraphQL specialist is down to an architectural decision

REST still is the go to choice for systems with lots of integration, enterprise environments, public APIs and micro services communication

GraphQL is the way to go when you need frontend flexibility, multi-platform support and complex data relationships that drive business value

Lots of companies are finding that the most effective strategy is to build a team of both

The wrong hire will create bottlenecks that will only come to the surface months later through delayed releases, growing tech debt and frustrated engineering teams

The right hire will stop those problems before they even start

How ExpertAppDevs Can Help?

ExpertAppDevs can give you dedicated REST and GraphQL Developers right when you need them.

We've worked with startups, enterprises and top household brands like PayPal and Infosys, bringing in our own developers on a flexible contract basis. Our clients often pick us to help with specific bits like app modules, individual sections, or day-to-day technical support - or even just to boost their existing in-house team with extra brains.

Some of the big names we've collaborated with include: PayPal, Infosys, ABB, Birlasoft, Adani Jio, Nestle, Pidilite, IndusInd Bank, Semicolon, Godrej Agrovet, Imagimake, GEA, Vedic Sadhana We can set up our services in a few different ways: Hire one of our dedicated developers - no strings attached. Get contract based development help when you need it.

We can team up with your existing team to give you firepower on specific projects. If you need something specific like a single module developed, we're your guys. Alternatively, we can take care of your whole tech side as a vendor. Need to get into enterprise mobility or digital product development? we can make it happen. One thing to note is we run a pretty sweet deal on our trials - hire one of our developers for 160 hours in a month and we'll knock off the first 40 hours. We also offer white label developers for vendors looking to work with us - that's $22 per hour or $2500 a month for a top expert.

Whether it’s one developer, a whole backend squad or a hybrid API team, flexible engagement models will help you get your product out the door faster while saving you time and hassle

Services include:

• Building REST APIs
• Working with GraphQL
• API modernisation
• Authentication and implementation
• API documentation
• Security hardening
• Performance optimisation
• Architecture consulting

You can get a developer or a team up and running on your project typically in one to two weeks flat, getting you the expertise you need for product launches, migrations, integrations and enterprise scale growth initiatives.

Conclusion

The Most Successful Tech Companies Have Agreed On - REST & GraphQL aren't really in Direct Competition

• Shopify does a lot with GraphQL on their storefronts and commerce bits - but still offers REST-based integrations for services they need to support.
• GitHub has both REST and GraphQL APIs -so developers can choose whichever one fits the job at hand.
• Netflix has for ages used API handling approaches that basically match up with GraphQL thinking - even though they stick with service oriented backend architecture.
• Airbnb uses GraphQL to make frontend data access pretty straightforward - but when it comes to backend services they rely on a distributed system.

The hiring takeaway here is - you don't have to choose one or the other. The companies use each where it wins. REST still does a great job at service communication, integrations and public APIs. GraphQL on the other hand is the way to go for modern user experiences, Data aggregation and giving the frontend more flexibility.

Frequently Asked Questions

#1. When should you hire a GraphQL developer over a REST developer?

You'll want to bring on a GraphQL specialist if you’ve got multiple clients using the same data, your frontend teams need to be super flexible, or the efficiency of your query is going to make a huge difference to the user experience.

#2. Is GraphQL replacing REST?

No way. REST is still the dominant choice for public APIs, integrations, and micro services. Most big organisations are using both techs side by side.

#3. Can one developer work with both REST and GraphQL?

There are loads of senior backend engineers who know their way around both paradigms. But to get the most out of an advanced GraphQL architecture you're going to need someone with some serious experience.

#4. Which is more expensive to hire - REST or GraphQL developer?

Generally, you can expect to pay a premium for a GraphQL specialist, mainly because of the high demand and limited talent pool.

#5. Which industries can make the most of GraphQL?

Companies in the tech space, SaaS platforms, mobile-first businesses, e-commerce brands, dev tools, and apps with loads of content tend to see the biggest benefits.

#6. What industries are still relying heavily on REST?

Healthcare, finance, government, logistics, enterprise software, and B2B platforms are all still pretty deep into REST architectures.

#7. What is GraphQL Federation?

Federation basically lets different teams work on different parts of a unified GraphQL schema but still present it as a single API endpoint.

#8. Does GraphQL speed things up?

It can help with reducing unnecessary data transfer and API calls, but let's be real, it ultimately depends on how well you’ve set up your schema and resolvers.

#9. How long does it take to onboard an API developer?

If you're hiring in-house you might be looking at several months, but if you bring in external resources you can often get going in one to two weeks.

#10. Can ExpertAppDevs provide long-term API development support?

Yes they can. They’ve got a range of models including project-based delivery, team extension, sprint-based development, and long term managed services.