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Hire Top Freelance Golang developers
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Freelance Golang Developer
Rishabh is a software engineer having 7+ years of experience building microservices, developing server-side and cloud native applications. He is also a technically sound guy in Core Java.
Golang Freelance Developer
Golang Freelance Developer
John is a software engineer having 10+ years of experience in designing front-end web applications, developing cloud-based native applications using Golang.
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Want to hire freelance Go developers on your own? Here are the skills you must look for while hiring a freelance Golang developer
Hiring freelance Go developers might be an intricate task for you if you are a non-technical manager. Golang is the most popular used language for cloud native development, developing distributed applications and server-side applications. Many old infrastructures are replaced using Golang. The internet protocol for clock synchronization among networks called Network Time Protocol (NTP) relies on Golang. But, hiring the most skilled freelance Golang developers among thousands of developers is a challenging task for anyone. So, UltraGenius is here to assist you while recruiting the top talented freelance Golang developers on your own. UltraGenius understands your job requirements and gets you only the top developers who have in-depth knowledge of development using Go programming language.
The following skills you must look for while hiring a freelance Golang developer –
Solid understanding of Go language and syntax
The freelance Go developer must possess firm understanding of the Golang language and its syntax. The developers must know about –
- Go CLI
- Go keywords, identifiers, and filenames.
- Methods, structures, and Pointers.
- Arrays, maps, and slices.
- Operators, functions, data types, and constants.
- Error and Exception Handling.
- Design Patterns.
- Panic, Error, Defer, Recover.
- Channel, Buffer, Goroutine.
- Arrow functions
- Blocked scope constructors let and const
- Advanced object literals
- Template literals
- Multi-line strings
- Module loaders
- Binary and octal literals
- Reflect API
- Destructuring assignment
Familiarity with Shell scripting
A shell script is designed to sequence and schedule system tasks and provide decision making linkage around them. Shell scripting is designed for performing multiple system level tasks such as creating, managing, and implementing system booting scripts, automating the installation process of a new version of a software, automating the repetitive tasks, and scheduling and executing the system processes. It includes many advantages for a freelance Go developer like interactive debugging, quick start, and fast program or file selection.
Knowledge of Go libraries
The Go language provides a vast set of standard library that includes core packages that can be added to the Golang program saving the developer from writing multiple lines of code which streamlines the development. Some of the popular Golang libraries include – GORM, Gen, Goose, Go CLI, Go Kit, Glide, Authboss, Vegeta, Docker, Ginkgo, Docker, Kubernetes, Fuzzy, Etcd, NSQ, and mgo (mongodb driver). Golang also avails go-echarts library for the developers to work on graphs. GORM is one of the most popular database libraries used in Go and is a featured tool for object relational mapping.
Experienced working with Version Control System (VCS) like Git
To be a freelance Golang developer, you need to have knowledge of version control systems like Git, SVN, TFS and Mercurial. There is mostly use of Git for their work. This helps the team in collaborating and organizing your code; it also makes it easier to maintain the frequent changes that happen in codes. It’s helpful while reviewing old codes with newer ones or pulling from repositories when required or managing commit history as well as adding-committing-pulling (or pull). Along with this, Golang freelance developers must know how to use add, push, pull, commit commands – branching and merging which allows developers to work independently on the code.
Knowledge of Go frameworks and tools
Golang allures software development process by its core frameworks like Revel, Martini, Gin Gonic, Beego (similar to Django framework in Python), Net / HTTP, Mango, Gorilla, Buffalo, Goji, and Gocraft. The freelance Go developers must have knowledge of Go’s dependency management tools like Godep and Sltr, code generation tools such as Stringer, and router packages like Gorilla Mux. Besides this, the freelance Go developers should know about GoConvey, Ginkgo, Vegeta, and HTTP testing tool.
Experience in API integration with REST and SOAP APIs
The NET/HTTP library in Go is best for building REST APIs. REST stands for Representational State Transfer defines a set of constraints of how an Internet scale distributed hypermedia system should be. A perfectly designed REST API is similar to a website running in the web browser with an in-built HTTP functionality. It uses GET, PUT, POST, PATCH, and DELTE method to performs operations on data. SOAP stands for Simple Object Access Protocol and uses only HTTP and XML. SOAP has the ability to work with application layer protocols such as HTTP, TCP, UDP, and SMTP.
Knowledge of Goroutines and channel patterns
A goroutine is a function or a method that runs concurrently with other functions in the same address space. Goroutines are similar to lightweight threads and the cost of creating goroutines is much less as compared to a thread. Goroutines internally act as coroutines and are multiplexed among several operating system threads.
Familiarity with Cloud
Golang is widely used for developing secure and efficient software on cloud platforms. Because of its concurrency feature, Golang is also known as ” Language of Cloud”. Golang helps to build large scalable systems maintaining concurrency via Goroutines. The freelance Golang developers must know about application development and deployment using any of the cloud platforms including – AWS, Azure, or Google Cloud.
Expertise in implementing Microservices
Golang is a good choice for developing microservice and enables freelance Golang developers create applications with high-load services. Go kit library is used for microservices development. It solves the problems that occur in distributed applications and systems so that developers can concentrate on the business logic of programming.
Knowledge of DevOps practices
DevOps is a set of processes that enables faster application development and provides general practices for building the best quality software through the system. Almost all deployment platforms use Golang, so the freelance Go developers should know about Continuous Development, Continuous Testing, Continuous Integration (CI), Continuous Deployment (CD), Continuous delivery, Continuous monitoring, and infrastrucutre as a code.
Understanding of Go's design patterns
The freelance Go developer must have firm understanding of design patterns. A design pattern is a general and repeatable solution to any problem in software designing. Go’s design patterns include – Creational design pattern, Structural design pattern, Behavioral design pattern, Concurrency design pattern, and Stability design pattern.
Experience with deployment tools like Heroku, Docker, and Kubernetes
Docker and Kubernetes helps freelance Go developers manage containers in software development and production. Docker can run in any environment of a developer’s choice like a public cloud service, a remote server, or a laptop, while Heroku should run in its own cloud environment. Kubernetes is an open source system that provides developers to automate deploys, run and manage containers, scale the deployments, deploy stateful and stateless applications, and many more.
Strong problem solving skills and code writing proficiency
The freelance CGolang developer must have a strong problem solving skill The developers must be able to think abstractly and replace the existing solutions if needed. The freelance Golang developer should know code debugging and testing. Check if the freelance Go developer is able to write clean and concise code and can fluently communicate with other team members while explaining the code.
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Connect with the top 1% freelance Golang developers of the world at the lowest prices
Golang is one of the most demanding programming languages for developing server-side and cloud-native applications. Go is specifically designed for faster application development with least memory usage. But recruiting the best freelance Golang developers is not an easy task when a large no. of Golang freelance developers are competing to grab the job opportunities.
Top Interview Questions to ask while hiring a freelance Golang developer
A string literal is a string constant formed by a single character or concatenating a sequence of characters. There are two types of string literals - Raw string literals and Interpreted string literals.
Raw string literals are the uninterrupted sequence of characters placed between backticks. For example, `UltraGenius`.
Interpreted string literals are the sequence of characters placed within double quotations. For example, "Welcome to UltraGenius".
Slice is a lightweight data structure used for storing homogeneous data with a sequence of variable length. Slice has three components-
- Pointer - A pointer points to the first array element which is accessible through slice. The element is not necessarily to be the first element.
- Length - Length represents the total number of elements present in the slice.
- Capacity - It represents the capacity up to which the slice can expand.
Goroutines provide the way of executing tasks concurrently with other tasks in the same address space. Goroutines can communicate using the channels which are especially designed to prevent race conditions when the memory is being accessed. The main Goroutine must run in order to run any other Goroutine.
Type Switch is used to check the data type of a variable at run-time. Each Switch contains minimum one case which behaves as a conditional statement and a default case which is executed if none of the mentioned conditions is true.
A Go channel is a way of communication used by Goroutines to exchange data. When freelance Golang developers have multiple Goroutines running concurrently, then Go channels become the most efficient mechanism for communication. Freelance Go developers often use them for notifications and managing concurrency in the program.
The chan keyword is used for creating a channel. A channel can transfer only the same type of data from the same channel, different type of data is not permissible. The channel can also be created using the make() function with a shorthand declaration.
The make() function creates a generic channel, map, or slice values. It returns general type value and not a pointer value. While the new() function works for all types and allocates memory for the variable dynamically at run-time, initializes to zero value, and returns a pointer value to it.
Golang provides a special feature called anonymous function which has the ability to form closures. A closure is an anonymous function in which the reference variables are declared outside the function. It is similar to accessing the global variables outside the function.
The output of the program will be -
One of the unique features of Golang is that it provides automated package testing with custom testing suites. For creating a new testing suite, create a file with _test.go extension that contains a TestXyz function, where Xyz is replaced with the name of the feature which is to be tested.
After that, place the testing suite file in the same package in which the file needs to be tested is present. The test file does not run during normal execution but will run only when you execute go test command.
Frequently Asked Questions
UltraGenius is one of the leading platforms for hiring remote talent and connecting freelance and part-time developers with Silicon Valley businesses. We focus on finding the best talents who will perform extremely well and will be easily integrated into your teams. We filter out only the top 1% most skilled freelance developers among the 20K+ developers who have applied on our platform. Candidates have to prove their self-reported experience by giving Ultragenius’ s skill tests.
UltraGenius first tests the developer’s skill set by conducting a two and half hour hiring test. Our hiring test judges a candidate on all aspects like aptitude, case study analysis, verbal and reasoning, coding questions based on data structures and algorithms, software engineering, system design, and more. Then, there is another round for the candidates who are selected from this round called “Higher-level Assessment Skill Test”, which is a video round that deeply analyzes Golang freelance developers’ major skills and asks questions about the projects they have worked upon.
Fill up the form which is on every hiring freelancers’ page and we will inform you once we select the top 1% freelance Golang developers matching your job requirements. After analyzing the candidates based on their resumes and two assessment tests, we provide you the feedback quickly. And if the freelancers selected by our team are fit for your job role, then we also provide the onboarding.
UltraGenius offers you only the most skilled freelance developers who are top 1% among the 20K+ freelance developers who have applied on our platform. After a rigorous selection and testing process, we sort out only the top candidates for you. You can check out UltraGenius’ s selection process for hiring freelance Golang developers on https://www.ultragenius.club/hire-golang-freelancer/.