Hire Only Senior
Back-End Developers

Name: React.js Development Services
Brand: Trio
Rating: 4.5 (2440 reviews)

Trio focuses on finding only Senior Back-End Developers to deliver impact within your team. All of our developers are proven domain experts in their field. Companies choose Trio to scale their teams faster with best-in-class talent.

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Alisson

Senior Back-End Developer

java-2-3 12 years of experience

Trusted by leading brands and startups

Hire Senior Back-End Developers and Engineers

Leonardo

Senior Back-End Developer

18 years of experience

Leonardo is a highly experienced professional specialized in web systems development. He has a deep understanding of the field and has excelled as a Team Leader, successfully managing global projects.

Leonardo is a highly experienced professional specialized in web systems development. He has a deep understanding of the field and has excelled as a Team Leader, successfully managing global projects.
- Java
- Spring Boot
- Oracle
- JUnit
- JBoss
- MongoDB
- PostgreSQL
- Microservices
Hire Leonardo
Hiring takes a lot of time and effort, and to be able to have a partner like Trio has been super valuable for Visual Boston. Knowing their quality and how their vetting process is like, as opposed to shopping around not sure of what you are going to get, made Trio our best option.

Mark Stenquist

Co-Founder & Engineer Specialist at Visual Boston
Otavio

Senior Back-End Developer

15+ years of experience

Otavio is a seasoned computer science professor at the Federal University of São Paulo. He has made a successful transition into industry, leveraging his expertise to help tech companies thrive as a senior software engineer. Focused primarily on backend development using TypeScript/Node.js, he also explores diverse technologies while championing software best practices. Recognized with the Microsoft MVP award in 2021 and 2022, he's also a published author and runs a popular YouTube channel, all while maintaining his commitment to teaching.

Otavio is a seasoned computer science professor at the Federal University of São Paulo. He has made a successful transition into industry, leveraging his expertise to help tech companies thrive as a senior software engineer. Focused primarily on backend development using TypeScript/Node.js, he also explores diverse technologies while championing software best practices. Recognized with the Microsoft MVP award in 2021 and 2022, he's also a published author and runs a popular YouTube channel, all while maintaining his commitment to teaching.
- Node.js
- Python
- MongoDB
- Microservices
Hire Otavio
Trio just makes it easy to allocate engineers. They give you very transparent prices upfront for the skill set that you need, so scaling up our project is as easy as reaching out and saying, 'That's what we need!'

Mark Kimmerman

Partner and Product Manager at Cosmos
Dhyego

Senior Back-End Developer

12 years of experience

Dhyego is a senior software developer with 12 years of experience in a wide range of projects and complexities. He specializes in software architecture, web development, and technical leadership, and is passionate about innovative solutions that drive business success. With his diverse experience and strong technical skills, he is a reliable and highly competent professional.

Dhyego is a senior software developer with 12 years of experience in a wide range of projects and complexities. He specializes in software architecture, web development, and technical leadership, and is passionate about innovative solutions that drive business success. With his diverse experience and strong technical skills, he is a reliable and highly competent professional.
- Node.js
- Ruby
- PHP
- Java
- Python
- Elixir
- Bash
- React
- Vue.js
- React Native
- Flutter
- CI/CD
- SQL
- NoSQL
- Docker
- GraphQL
- REST
- Messaging
- AWS
- GCP
- Terraform
Hire Dhyego
Trio allowed us to find the proper talent needed for our clients' projects without having the burden of trying to interview them and have them on payroll full time internally.

Alec Harrison

Co-Founder & Design Specialist at Visual Boston
Alisson

Senior Back-End Developer

12 years of experience

Alisson Gazda is a skilled computer engineer. He specializes in back-end solutions and values teamwork, offering valuable insights throughout the project lifecycle. With strong soft skills in leadership and mentoring, Alisson contributes to a smooth and successful implementation.

Alisson Gazda is a skilled computer engineer. He specializes in back-end solutions and values teamwork, offering valuable insights throughout the project lifecycle. With strong soft skills in leadership and mentoring, Alisson contributes to a smooth and successful implementation.
- Java
- JPA
- RabbitMQ
- Oracle
- MongoDB
- PostgreSQL
- Velocity
- Tomcat
- Struts
- Microservices
Hire Alisson
The thing that impressed me the most was that Trio was able to very quickly find us qualified candidates. We spent 6 months, and we couldn't hire an iOS or Android engineer, but Trio gave us one of each in 3 weeks.

Shaun Scovi

General Manager at Poloniex
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Nicolas

Senior backend Developer

10 Years of Experience

Nicolas is a highly efficient and reliable professional who possesses a broad skill set for web application development. He's been working on a range of products and clients—from working on scalability problems in production engineering
- backend
- Javascript
- Vue.js
- Node.js
- NGX
- HTML
Hire Nicolas
The team at Trio understands modern leadership/engineering which allows them to find high-quality individuals seeking opportunities to challenge themselves and develop new skills. Their engineers have the highest potential and have surpassed our expectations when taking the chance on them.

Brandon Chinn

Sr. Director of Product Engineering @ Tally
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Tomás

Senior backend Developer

10 Years of Experience

Tomás is a highly efficient and reliable professional who possesses a broad skill set for web application development. He's been working on a range of products and clients—from working on scalability problems in production engineering
- backend
- Javascript
- Vue.js
- Node.js
- NGX
- HTML
Hire Tomás
The team at Trio understands modern leadership/engineering which allows them to find high-quality individuals seeking opportunities to challenge themselves and develop new skills. Their engineers have the highest potential and have surpassed our expectations when taking the chance on them.

Brandon Chinn

Sr. Director of Product Engineering @ Tally
Start Hiring
Antônio

Senior backend Developer

10 Years of Experience

Antônio is a highly efficient and reliable professional who possesses a broad skill set for web application development. He's been working on a range of products and clients—from working on scalability problems in production engineering
- backend
- Javascript
- Vue.js
- Node.js
- NGX
- HTML
Hire Antônio
The team at Trio understands modern leadership/engineering which allows them to find high-quality individuals seeking opportunities to challenge themselves and develop new skills. Their engineers have the highest potential and have surpassed our expectations when taking the chance on them.

Brandon Chinn

Sr. Director of Product Engineering @ Tally
Start Hiring
Kaua

Senior backend Developer

10 Years of Experience

Kaua is a highly efficient and reliable professional who possesses a broad skill set for web application development. He's been working on a range of products and clients—from working on scalability problems in production engineering
- backend
- Javascript
- Vue.js
- Node.js
- NGX
- HTML
Hire Kaua
The team at Trio understands modern leadership/engineering which allows them to find high-quality individuals seeking opportunities to challenge themselves and develop new skills. Their engineers have the highest potential and have surpassed our expectations when taking the chance on them.

Brandon Chinn

Sr. Director of Product Engineering @ Tally
Start Hiring
Erick

Senior backend Developer

10 Years of Experience

Erick is a highly efficient and reliable professional who possesses a broad skill set for web application development. He's been working on a range of products and clients—from working on scalability problems in production engineering
- backend
- Javascript
- Vue.js
- Node.js
- NGX
- HTML
Hire Erick
The team at Trio understands modern leadership/engineering which allows them to find high-quality individuals seeking opportunities to challenge themselves and develop new skills. Their engineers have the highest potential and have surpassed our expectations when taking the chance on them.

Brandon Chinn

Sr. Director of Product Engineering @ Tally
Start Hiring
Luan

Senior backend Developer

10 Years of Experience

Luan is a highly efficient and reliable professional who possesses a broad skill set for web application development. He's been working on a range of products and clients—from working on scalability problems in production engineering
- backend
- Javascript
- Vue.js
- Node.js
- NGX
- HTML
Hire Luan
The team at Trio understands modern leadership/engineering which allows them to find high-quality individuals seeking opportunities to challenge themselves and develop new skills. Their engineers have the highest potential and have surpassed our expectations when taking the chance on them.

Brandon Chinn

Sr. Director of Product Engineering @ Tally
Start Hiring
Vitór

Senior backend Developer

10 Years of Experience

Vitór is a highly efficient and reliable professional who possesses a broad skill set for web application development. He's been working on a range of products and clients—from working on scalability problems in production engineering
- backend
- Javascript
- Vue.js
- Node.js
- NGX
- HTML
Hire Vitór
The team at Trio understands modern leadership/engineering which allows them to find high-quality individuals seeking opportunities to challenge themselves and develop new skills. Their engineers have the highest potential and have surpassed our expectations when taking the chance on them.

Brandon Chinn

Sr. Director of Product Engineering @ Tally
Start Hiring
Douglas

Senior backend Developer

10 Years of Experience

Douglas is a highly efficient and reliable professional who possesses a broad skill set for web application development. He's been working on a range of products and clients—from working on scalability problems in production engineering
- backend
- Javascript
- Vue.js
- Node.js
- NGX
- HTML
Hire Douglas
The team at Trio understands modern leadership/engineering which allows them to find high-quality individuals seeking opportunities to challenge themselves and develop new skills. Their engineers have the highest potential and have surpassed our expectations when taking the chance on them.

Brandon Chinn

Sr. Director of Product Engineering @ Tally
Start Hiring
Thiago

Senior backend Developer

10 Years of Experience

Thiago is a highly efficient and reliable professional who possesses a broad skill set for web application development. He's been working on a range of products and clients—from working on scalability problems in production engineering
- backend
- Javascript
- Vue.js
- Node.js
- NGX
- HTML
Hire Thiago
The team at Trio understands modern leadership/engineering which allows them to find high-quality individuals seeking opportunities to challenge themselves and develop new skills. Their engineers have the highest potential and have surpassed our expectations when taking the chance on them.

Brandon Chinn

Sr. Director of Product Engineering @ Tally
Start Hiring
Nicolas

Senior backend Developer

10 Years of Experience

Nicolas is a highly efficient and reliable professional who possesses a broad skill set for web application development. He's been working on a range of products and clients—from working on scalability problems in production engineering
- backend
- Javascript
- Vue.js
- Node.js
- NGX
- HTML
Hire Nicolas
The team at Trio understands modern leadership/engineering which allows them to find high-quality individuals seeking opportunities to challenge themselves and develop new skills. Their engineers have the highest potential and have surpassed our expectations when taking the chance on them.

Brandon Chinn

Sr. Director of Product Engineering @ Tally
Start Hiring
Renan

Senior backend Developer

10 Years of Experience

Renan is a highly efficient and reliable professional who possesses a broad skill set for web application development. He's been working on a range of products and clients—from working on scalability problems in production engineering
- backend
- Javascript
- Vue.js
- Node.js
- NGX
- HTML
Hire Renan
The team at Trio understands modern leadership/engineering which allows them to find high-quality individuals seeking opportunities to challenge themselves and develop new skills. Their engineers have the highest potential and have surpassed our expectations when taking the chance on them.

Brandon Chinn

Sr. Director of Product Engineering @ Tally
Start Hiring
Pedro

Senior backend Developer

10 Years of Experience

Pedro is a highly efficient and reliable professional who possesses a broad skill set for web application development. He's been working on a range of products and clients—from working on scalability problems in production engineering
- backend
- Javascript
- Vue.js
- Node.js
- NGX
- HTML
Hire Pedro
The team at Trio understands modern leadership/engineering which allows them to find high-quality individuals seeking opportunities to challenge themselves and develop new skills. Their engineers have the highest potential and have surpassed our expectations when taking the chance on them.

Brandon Chinn

Sr. Director of Product Engineering @ Tally

Companies trust Trio's Senior
Back-End Developers to drive impact

See what some of our other partners have to say about Trio.

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Cosmos found it easier to have quality talent allocated to them through Trio.

Listen To

Mark Kimmerman

Partner

The Easiest Hire You'll Ever Make

Our senior ReactJS developers are well-rounded professionals that are passionate about building great products and delivering real impact in your company.

Excellent Communication
Deep Technical Expertise
Proven Mentoring Ability
Creative Problem Solving
Strategic Thinkers

Why Companies Choose Trio

Only Senior

100%

All Trio React Developers are senior-level with proven experience.

Speed

7 days

to fill most roles, sometimes within 3 days.

Time Saved

50+ hours

of time saved sourcing and interviewing candidates.

Retention

98%

Our engineers stay on teams for 2+ years on average

	Criteria	Trio	Internal Hiring	Marketplace
1	Time to find a senior React developer	0-3 weeks	1-4 Months	1-4 Months
2	Recruiting Fee	None	15%-40%	None
3	Quality Guarantee	Yes	No	No
4	Failure Rate	Very Low	Low	Very High
5	Pre-Screened Candidates	Yes	No	No
6	Deep Technical Validation	Yes	No	No
7	Termination Costs	None	Very high	None

Trio Senior Developer Qualifications

Role-Specific Quality

Senior React developers have a proven track record of excellent communication skills, work ethic, and impact. We match your company with senior developer talent that has extensive experience relevant to the role you're trying to fill.

Overall Quality

Beyond their excellent technical capabilities, senior React developers are also screened for English proficiency and vetted for communication and collaboration skills. We want to ensure they're amazing teammates, not just amazing workers.

Your team dynamics

Excellent Communication

Our senior developers have proven experience in their functional areas and can convey complex concepts clearly to all stakeholders.

Safe Safely

It's not about scaling fast, it's about scaling well. Trio ensures that you scale safely with talent that delivers real impact and will stick around for the long haul.

Bottom-line financials

Straightforward Pricing

Work with senior React developers full-time for a fixed hourly rate, for either 1, 3, 6, or 12-month engagements. Invoices are sent bi-weekly. No hidden fees.

Additional Savings

With Trio, you don't have to worry about benefits, vacation time, unemployment, termination hassle, paperwork, recruiting time and expenses, etc. We take care of those details.

Controllable expenses

It’s easy to scale up or downsize with Trio. No hassle involved, just good communication and advance notice as outlined in our agreement.

Team Value

Company value is largely impacted by your ability to build an amazing team and product. Hiring an amazing team of developers to build a great product takes substantial amounts of time and money.

Whether a senior React developer is hired to provide in-house teams with more bandwidth or to extend the team's capabilities, Trio enables your company to build your team and product faster.

Frequently Asked Questions

Trio's senior developers are experts in their given domain. They not only understand your business objectives but they are experienced enough to understand the why behind what they are building.

Trio takes it one step further by providing resources and training for senior developers to grow their skills.
Absolutely! Onboarding times aside, Trio is capable of providing senior back-end developers within a five-day timeframe to review and hire.

We recommend that developers start their assignment the week after they accept an offer. This allows them to start at the beginning of the next week.

Our experienced team supports you throughout this process, and can even align with your onboarding procedures to save time.
Trio's process is based on years of experience managing and growing successful engineering teams. We prioritize understanding your specific requirements to ensure we find the best fit senior developer for your team.

Our detailed interview process is designed to identify candidates that meet your specific needs. With a focus on detail and transparency, we present candidates who truly align with your expectations.
At Trio, we prioritize communication and collaboration. We believe this is key to delivering the highest value to our partners. With Trio, you’ll have access to some of the best senior back-end developers in Latin America.

Our engineering managers are skilled and dedicated professionals, committed to making sure that each developer on your team is not only satisfied but also consistently exceeds your expectations.
Absolutely, Trio understands the value of dedicated support. Each senior developer is paired with an engineering manager at no additional cost. These managers handle the needs of the developers on a weekly basis and are a third perspective should any issues arise.

While they support your project and engineering managers, their main goal is to allow your team to focus on what truly matters – delivering new features on time.
When hiring a senior back-end developer, look for individuals with a deep understanding of their technology.

They should be familiar with back-end production-grade patterns and practices and have a strong understanding of web development down to the details.

How to Find and Hire the Best Senior ReactJS Developers for Your Team

Modern companies rely on back-end developers to build the “engine” of their web applications. It’s an essential part of software development and encompasses a number of different sub-domains within web development.

Specifically, back-end developers are responsible for any part of the web application that isn’t the front-end! This means they do not touch UI or view layers at all. Back-end developers are tasked with building web servers and architectures that allow web applications to run at scale.

In addition to writing core business logic, backend developers also create and maintain databases, data, and application program interfaces (APIs). They are a necessity, and without back-end developers, you have no product.

What does a back-end developer do?

A back-end developer is responsible for the server-side development of a website or application. While front-end developers focus on the user-facing aspects, back-end developers work behind the scenes to build and maintain the server-side logic, database integration, and overall functionality of a web application.

Here are some tasks and responsibilities of a back-end developer:

Server-side Development: Back-end developers use programming languages such as Python, Java, Ruby, PHP, or Node.js to create the server-side logic of a web application. They handle data processing, business logic, and integration with databases and external APIs.
Database Management: Back-end developers work with databases like MySQL, PostgreSQL, MongoDB, or Oracle to design and implement data storage solutions. They create database schemas, optimize queries, and ensure data integrity and security.
API Development: Back-end developers build Application Programming Interfaces (APIs) that allow communication between different components of a web application or between different applications. APIs enable data exchange and functionality integration.
Security and Authentication: Back-end developers implement security measures to protect the web application from vulnerabilities and attacks. They handle user authentication, authorization, and implement secure data transmission using encryption protocols.
Performance Optimization: Back-end developers optimize the performance of the server-side code to ensure fast response times and efficient resource utilization. They identify and resolve bottlenecks, optimize database queries, and implement caching mechanisms.
Integration with Front-End: Back-end developers collaborate with front-end developers to integrate the server-side code with the user interface. They ensure smooth communication between the front-end and back-end components, enabling seamless functionality.
Version Control and Collaboration: Back-end developers use version control systems like Git to manage codebase, track changes, and collaborate with other developers in a team environment. They ensure code quality, conduct code reviews, and resolve conflicts.
Testing and Debugging: Back-end developers write unit tests and perform debugging to identify and fix issues in the server-side code. They ensure the reliability and stability of the application by conducting thorough testing and error handling.
Scalability and Performance Monitoring: Back-end developers design and implement scalable architectures that can handle increased traffic and user demand. They monitor server performance, analyze system metrics, and optimize the infrastructure to ensure smooth operations.

These skills and responsibilities may vary based on the specific technology stack, frameworks, and the organization's needs. Back-end developers work closely with front-end developers, database administrators, and other team members to deliver robust and functional web applications.

What is the difference between backend and frontend development?

Unlike frontend development, which focuses on the user interface that the end-user interacts with, the backend has more to do with the models and business logic of a system. This can be seen as the engine or heart of your application.

In addition to business logic, backend development also has to do with handling APIs and databases.

What makes a good backend developer?

Good backend developers are able to solve complex problems. Great backend developers have an in-depth understanding of all the various sub-domains of web development.

Every company has a unique problem they are trying to solve and that requires creating business logic that will increase in complexity as new features are appended to the application.

Backend developers are able to take a stakeholder vision and turn it into code that actually does something.

While all of that is very important, it’s only just the beginning. Web applications are systems, and backend developers must be proficient in software design & architecture patterns, testing, containerization vs virtualization, servers, how to build for scale, APIs, caching, security, etc.

Then comes the databases, which can be either relational or the various kinds of NoSQL most of the time. A good backend developer will have experience working with at least two of the three as well as some popular solutions such as MongoDB, PostgreSQL, or even Firebase if dealing with mobile.

What technologies should backend developers be proficient in?

When it comes to frameworks, there are a few options. Below is a list of frameworks geared toward startups. For enterprise-level frameworks, companies tend to leverage Spring, which is based on Java, and more recently Go/Rust for certain kinds of services.

Node.js

Node.js is the defacto standard for most startups. These days, there is no shortage of Node.js developers thanks to JavaScript being the current language of the web.

For this reason, it’s easy to have both front-end and back-end in one language, and thanks to Node.js it’s possible to write JavaScript on the server.

Ruby on Rails

Rails is a very popular framework developed by David Heinemeier Hansson. Developers can build applications with incredible speed compared to other frameworks like Java.

Rails includes everything you need to create a database-driven application, using the MVC design pattern along with SQLite.

Additionally, because it’s built on Ruby, you have access to a vast gem library that can add further functionality to your application.

Django

Django is the Python equivalent framework to Rails that follows the model-template-view architectural pattern. It encourages rapid development and clean, pragmatic design. For Python developers, it’s the most popular framework in use next to Flask.

What are the skills needed for a back-end developer?

Successful back-end developers possess a range of technical skills and problem-solving capabilities.

Here are some essential skills necessary for back-end development:

Proficiency in Server-side Programming: Back-end developers should have a strong grasp of server-side programming languages such as Python, Java, Ruby, PHP, or Node.js. They utilize these languages to develop the logic and functionality of web applications on the server side.
Database Management: Back-end developers work with databases such as MySQL, PostgreSQL, MongoDB, or Oracle. They design and implement efficient database schemas, write optimized queries, and ensure data integrity and security.
API Development: Back-end developers build Application Programming Interfaces (APIs) that allow seamless communication between different components of a web application or between different applications. They ensure proper data exchange and integration.
Security and Authentication: Back-end developers implement robust security measures to safeguard web applications against vulnerabilities and attacks. They handle user authentication, authorization, and implement secure data transmission using encryption protocols.
Performance Optimization: Back-end developers optimize the performance of server-side code to ensure fast response times and efficient resource utilization. They identify and resolve bottlenecks, optimize database queries, and implement caching mechanisms.
Integration with Front-End: Back-end developers collaborate with front-end developers to integrate server-side logic with the user interface. They establish smooth communication between front-end and back-end components, enabling seamless functionality.
Version Control and Collaboration: Back-end developers utilize version control systems such as Git to manage codebase, track changes, and collaborate effectively with other developers in a team environment. They ensure code quality through code reviews and conflict resolution.
Testing and Debugging: Back-end developers write unit tests and perform debugging to identify and resolve issues within server-side code. They conduct thorough testing and implement error handling to ensure application reliability and stability.
Scalability and Performance Monitoring: Back-end developers design and implement scalable architectures capable of handling increased traffic and user demands. They monitor server performance, analyze system metrics, and optimize infrastructure to ensure smooth operations.

It's important to note that specific skills may vary depending on the organization's technology stack and project requirements. Back-end developers collaborate closely with front-end developers, database administrators, and other team members to deliver robust and functional web applications.

Where to find back-end developers?

Next up is finding out where to look for back-end developers. There are a few approaches you can take here. Let's go through them.

Freelance marketplaces

These platforms provide access to a vast pool of developers worldwide. Freelance back-end developers showcase their skills, expertise, and rates, allowing you to choose the best fit for your project.

Keep in mind that freelancers may work on multiple projects simultaneously, which can be advantageous if you only need temporary assistance.

Job boards

Traditional job boards and networks are another avenue to find back-end developers. Developers upload their profiles and resume for companies to review. By creating a well-crafted job description with relevant keywords, you can attract talented developers.

Job boards often cater to individuals seeking full-time positions, so it can be suitable for ongoing projects.

Outsourcing companies

Outsourcing agencies offer the flexibility to scale your team based on your needs. With developers located worldwide, these agencies can handle your project from inception to completion.

However, it's important to note that the quality of services may vary among outsourcing companies. Partnering with an outsourcing agency can save you time, money, and resources, particularly if you prefer to avoid managing an in-house team.

Keep in mind that communication can be a challenge when working with outsourcing agencies, especially due to cultural differences or skill-related issues that may arise later in the development process.

Why hire a back-end developer

Hiring a senior back-end developer to build your web application is an obvious need. The real question you have to ask yourself is how you want to hire a back-end developer. We’ve gone through some of the options, and the risks associated with them.

If you're keen on leveraging nearshore tech partners to speed up your hiring process and get you a senior back-end developer fast, reach out to us at Trio.

At Trio, communication is our top priority. We can scale your team with the best senior back-end talent in Latin America.

Hire Only SeniorBack-End Developers

Trusted by leading brands and startups

Hire Senior Back-End Developers and Engineers

Companies trust Trio's Senior Back-End Developers to drive impact

The Easiest Hire You'll Ever Make

Why Companies Choose Trio

Only Senior

Speed

Time Saved

Retention

Trio Senior Developer Qualifications

Role-Specific Quality

Overall Quality

Your team dynamics

Excellent Communication

Safe Safely

Bottom-line financials

Straightforward Pricing

Additional Savings

Controllable expenses

Team Value

How does Trio work?

Tell us what kind of Developer you need

Work with hand-picked talent

Guaranteed excellence

What is Trio?

Only senior developers that deliver impact

Fully integrated, fully committed

Get more done with experienced developers

Time-zone-aligned