Hire The Top 1% Freelance Java Developers

Flexiple is a network of top Java developers, engineers, and architects with hourly rates ranging from $30 to $100. Join 100+ teams who have hired Java developers from Flexiple for a few weeks to a few years!

Flexiple spent good amount of time understanding our requirements, resulting in accurate recommendations and quick ramp up by quality developers.

Narayan Vyas, Senior PM (YC S12)

Overall Flexiple brought in high-level of transparency with quick turnarounds in the hiring process at a significantly lower cost than any alternate options.

Esther Hersh, Co-founder ('17 NYU Grad)

Flexiple has been instrumental in helping us grow at a fast pace. Their vetting process for engineers is top notch and they connected us with quality talent quickly.

Tanu V, Founder (#1 Salesforce Leads App)

Work With Flexiple's Expert Java Developers!

Be a short-term or a long-term project, don't compromise on the quality of talent you work with. Flexiple handpicks only the Top 1% through a 6-stage screening process.
  • Serban-Cristian Stef, freelance Java developer
    Serban-Cristian Stef
    Java C++ Python

    A skilled software engineer, Serban has spent over 4 years working at prominent companies like IBM. Propelled to be involved in the business front and cause an ... impact, he had set forth as a freelance Java developer. His extensive knowledge in Java, C++, etc. have come of use across domains like e-commerce, cloud, testing, etc. Serban is great with his explanations, making him great to work with. Read more

    Previously at Computaris

    Hire Serban
  • Priya Raut, freelance Java developer
    Priya Raut
    Java React Native Spring

    A proficient individual contributor, Priya has worked in prominent product companies like Rakuten, a top Japanese e-commerce platform. She has spent over ... 4 years fine-tuning her skills in Java, React, etc. Persuaded by an interest to learn new technologies, she has been exploring opportunities as a freelance Java developer. An open-source contribution hobbyist, Priya has a knack for thorough explanations and strong communication. Read more

    Previously at Rakuten

    Hire Priya
  • Anil Kumar Chalamasetty, freelance Java developer
    Anil Kumar Chalamasetty
    Java Android

    An accomplished senior software engineer, Anil has spent over 13 years developing a plethora of apps for Android, Symbian, Roku, etc. Having worked in service-based ... firms, his work stretches across domains like streaming, healthcare, education, utilities, etc. He has worked with top clients like Nokia, Motorola, Disney, etc. Taking up roles like lead Android developer, he has led teams and built products from scratch. Punctuality and responsiveness are qualities that make Anil stand out. Read more

    Previously at Disney

    Hire Anil
  • Vineetha Venugopal, freelance Java developer
    Vineetha Venugopal
    Java Android .NET

    Vineetha is an NIT Jaipur (top-tier engineering college in India) alumni having 6+ years of experience in software development space with the likes of Samsung ... R&D, Shop101 & Infosys. She specializes in highly scalable, real-time Android applications, with past experience in Java, C# & database technologies. Her extensive experience as a freelance Java developer covers a variety of project setups from building apps for startups to the development & continuous delivery for large-scale, long-term projects. Read more

    Previously at Samsung

    Hire Vineetha
  • Kęstutis Dragūnas, freelance Java developer
    Kestutis Dragunas
    Java Spring PHP

    Kestutis, a CS grad, is an adept senior developer with over 12 years of experience in the software industry. He has demonstrated his proficiency in Java, PHP, etc. ... across domains like finance, banking, etc. His work at top product-based and service-based companies like Ericsson, Nasdaq, etc. is a testament to his skills. Driven by the ability to choose his projects, Kestutis has been venturing as a freelance Java developer. Read more

    Previously at Ericsson

    Hire Kęstutis
  • Rahul Ghose, freelance Java developer
    Rahul Ghose
    Java Python React

    Rahul, a brilliant senior developer, has substantial experience of over 7 years in the software domain. He has worked across multiple product companies like Flywheel and an ... esteemed service company, Goldman Sachs. He was the software engineering vice-president of the technology division of Goldman Sachs. Proficient in Java, Python, React and more, he has developed across domains like commutation, fashion, communication & collaboration, etc. A lucid communicator, Rahul has set out as a freelance Java developer. Read more

    Previously at Goldman Sachs

    Hire Rahul
  • Sebastian Liviu Dinu, freelance Java developer
    Sebastian Liviu Dinu
    Java Angular Node

    With a rich 8 years in the software industry, Sebastian has spent his career honing his skills in Java, Angular, Node, etc. An able application developer, his work ... across top companies like IBM and Siemens proves his calibre. His experience in development stretches across diverse spheres like LMS, monitoring, billing & payment, etc. As a freelance Java developer, Sebastian highly values quality communication with his clients. Read more

    Previously at IBM

    Hire Sebastian
  • Shivaraman Aiyer, freelance Java developer
    Shivaraman Aiyer
    Java PHP Angular

    Having worked across prominent product companies like Samsung, Shivaraman has extensive experience in Java, PHP, VanillaJS, etc. A talented senior ... software engineer, he has spent over 7 years in development across fields like education, management, social media, etc. Demonstrating his expertise, he has taken up leadership roles and driven teams to success. A patient listener and an articulate communicator, Shivaraman has been a freelance Java developer. Read more

    Previously at Samsung

    Hire Shivaraman

Flexiple Helps You Hire Quality Developers, Handpicked for You

  • Work only with the best

    Our developers are selected through a 6-stage screening process. As a result, our developers have an average of 5-years industry experience and are ready to immediately contribute on projects.
  • Work with Role-specific Developers

    Save time and energy lost in manually sifting through profiles. Our solutions expert along with our Director of Technology will handpick developers who are a perfect match for your requirement.
  • Work Risk-free & Start within 2 Days

    With immense confidence in the quality of our developers and the accuracy of our recommendations, we are happy to offer you a 1-week trial where you pay only if you are satisfied.

Find the perfect developer for your team at the right price

  • Individual Contributor

    $
    /year
    $30-50
    /hour
    • 1-3 years of experience
    • Mostly worked on a single stack
    • Top Individual Contributor
  • Multi-faceted Contributor

    $
    /year
    $50-80
    /hour
    • 3-7 years of experience
    • Expertise in multiple stacks
    • Worked on niche skills
    • Mentors Junior Developers
  • Leader & Diverse Contributor

    $
    /year
    $80+
    /hour
    • 7-10+ years of experience
    • Works across tech stacks
    • Multiple niche skills
    • Led multiple teams in the past

How We Select the Top 1%

45.4%pass rate

Depth in past work

Flexiple Developers are reviewed on their experience and complexity of products built. Those who display depth and have worked on end-to-end projects are given an introductory call.

14.6%pass rate

Good communication and motivation

Over a call, the developer’s ability to communicate in an articulate manner is tested. A deeper understanding of the candidate’s technical experience and also motivation to freelance is achieved.

3.1%pass rate

Strong technical abilities

Over one or more F2F interviews, the developer’s involvement and performance in building complex software products are assessed. This sets the platform to delve deeper into technology-specific discussions.

1.5%pass rate

Keen problem solving and coding

Developers' mental agility and problem-solving abilities are tested through a coding test involving algorithmic as well as skill-specific problems. A mixture of live evaluation and timed coding tests is used.

1.2%pass rate

Splendid reviews in background check

The live experience of working with developers is verified by reaching out to past clients and/or employers. Inputs on various qualitative factors such as reliability, punctuality, communication and responsiveness are received.

1%pass rate

Consistent exemplary performance

Performance during each engagement is continually assessed. Our developers are expected to maintain Flexiple standards across all engagements with our customers.

Hire Freelance Java Developers within 48 Hours!

Our simple process gets you working with the right freelancer quickly and seamlessly

Don't Just Take Our Word For It!

(Y-Combinator S12 and Andreessen Horowitz-backed Company)

Quality product launched on schedule by a team of 8 engineers

"Flexiple helped us hire quality developers across technologies - Node, Rails, PHP, Python. They spent a good amount of time understanding our requirements, resulting in accurate recommendations and quick ramp up by developers. We also found them to be much more affordable than other alternatives for the same level of quality."

Narayan Vyas,

Senior Product manager, Plivo Inc

(Incubated at the European Space Agency)

Helped set up and scale tech team on demand

"Flexiple has exceeded our expectations with their focus on customer satisfaction! The freelancers are brilliant at what they do and have made an immense impact. Highly recommended :)"

Henning Grimm,

Founder, Aquaplot

(Acquired by Unicorn, Hike Messenger)

Saved 30% costs with 2 software products delivered

“Overall Flexiple brought in high-level of transparency with extremely quick turnarounds in the hiring process at a significantly lower cost than any alternate options we had considered.”

Kislay Shashwat,

VP Finance, CREO

('17 NYU Graduates)

Found a perfect new member for its globally distributed team

"Working with Flexiple has provided us with partners who are providing us with the required technical support for our growth and success!"

Esther Hersh,

Co-founder, Peblio Inc

(Y-Combinator S18)

Hired the first remote engineer to work directly with the CTO

"It has been great working with Flexiple for hiring highly talented and hardworking folks on contract. We were looking for a suitable developer on the back-end and we got to know Ankur through Flexiple. We are very happy with the commitment and skills he brings to the job and we will be working with Flexiple going forward as well after this positive experience. I recommend them highly for any freelancing talent you are looking to hire!"

Neil Shah,

Chief of Staff, Prodigal Tech

(#1 Lead Routing App for Salesforce)

Helped scale the product with a team of engineers

"Flexiple has been instrumental in helping us grow at a fast pace. Their vetting process for engineers is top notch and they were able to connect us with quality talent quickly. The team put great emphasis in understanding our requirements and getting to know us which ensured that we were matched with folks who were a great fit not only technically but also culturally."

Tanu V,

Founder, Power Router

(Acquired by Reliance for $100 million)

Delivered 2 high quality products forming a long partnership

"The engagement with Flexiple and their community members has helped us get work done in a timely manner and helped us go above and beyond."

Swapan R,

Co-founder, Haptik

(Acquired by PayU for $70 million)

Built their first remote tech team of a frontend and backend engineer

"Highly responsive team with prompt support and willingness to go the extra mile. Powered by technically brilliant personnel on board, we have happy results – all this at an affordable price!"

Sajith N,

Product Manager, Wibmo Inc
  • How to Hire a Great Freelance Java Developer?


    Java is an object-oriented programming language developed by James Gosling and his colleagues at Sun Microsystems in the early 1990s. There has been a significant increase in the number of Java developers over the years. It went from 1.5 Million in 2003 to 7 Million in 2007 when Java became an open-source. The year 2020 marks the 25th anniversary of Java, and it has still managed to maintain its position in the top 3 most popular programming languages. A lot of enterprise companies use Java for their server-side programming because it is exceptionally robust and user-friendly.

    If you’re looking for a freelance Java developer, this guide will come in handy. We’ve included everything you need to know about hiring a freelance Java developer.

    But before we get into the fundamentals of hiring a freelance Java developer, let’s delve into some interesting facts about Java.

    We have broken the sections into the following parts:
    1. Let's introduce Java to you.
    2. Why is Java widespread?
    3. Writing the Job Description
    4. Interview Questions for hiring a Java developer
    - Basic Questions
    - Advanced Questions
    - Data Structures/Algo Questions


    1. Let's introduce Java to you

    • Origin story: Java was initially developed by James and his colleagues(a.k.a, the ‘green team’) for digital devices like set-top boxes, television, etc. It was called ‘Greentalk’ and ‘Oak’ before Gosling came up with the name ‘Java.’ This project was created to implement a virtual machine that is easier than C/C++.

    • Widely popular: According to Daxx’s LinkedIn research, the USA has the highest number of Java programmers- 63K, followed by the UK with almost 14K Java developers.

    • Top companies using Java: Top companies like Google, Instagram, Airbnb, Pinterest, Slack, Spotify, etc. use Java.

    • Other trivia: In 1995, Time magazine featured Java as one of the Ten Best Products of 1995.

    • 2. Why is Java widespread?

      • User-friendly: Java has an English-like syntax, which makes it easy to learn. It is easy to advance from Core Java to Advanced Java for someone who has a functional knowledge of C and C++.
      • Robust: Java is robust as it utilizes strong memory management. No use of pointers bypasses security dilemmas.  It also has an automatic garbage collector, which runs on the Java Virtual Machine(JVM) to eliminate objects which are not being accepted by a Java application anymore.

      3. Writing the Job Description

      Below are some key points that we at Flexiple have learned through trial and error - a process of filtering through over 15,000 developers.

      • Years of software development experience: Be specific about the technology you’re looking for and the number of years of experience needed. A proxy to years of experience can be the number of production-level apps worked on.

      • Expertise in a specific framework: All frameworks have their peculiarities and nuances. While good Java developers can pick up other frameworks, it’s a plus point to hire a developer who already has expertise in it.

      • Type of products built in the past: You can filter out applications based on the candidate’s past work if you want someone who has a fair idea about how things work in a product like yours.

      • Exposure to specific industries:  Developers who have built products in certain industries will already know key aspects of laying the foundation for a great product and will be able to predict possible problems.

      • Experience working remotely: Hiring someone who has worked remotely in the past is an added benefit as they have front-hand experience of everything right from how the contracts work to communication and from timelines to deliverables.

      • Strong communication: An essential thing to look at when hiring a freelancer is excellent communication skills. Since all the interaction happens online, a freelancer needs to be able to seek to understand and be direct in their language.

      • 4. Interview Questions for hiring a Java developer

        Now that you have made a quality JD, it can still be tricky to evaluate the skills of your applicants. To help you with that, we have created a pool of questions that a good Java developer should be comfortable with.
        It is important to note that the ability to answer these questions doesn't imply that you have a top quality candidate. But it definitely is a big step in that direction.

        To help you navigate through these questions, we’ve categorized the interview questions in 3 parts:

        A. Basic concepts: Includes all basic concepts used across languages but we've focused on its significance in Java. This section will give you an understanding of how strong their programming foundation is.

        B. Advanced concepts: Includes all concepts that someone with higher expertise should know.

        C. DS/Algorithm questions: To test the logical capability of the candidate.


        A. Basic concepts


        Coming soon!


        B. Advanced concepts


        Coming soon!


        C. Data Structure/ Algorithm

  • 1. Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. An input string is valid if: Open brackets must be closed by the same type of brackets. Open brackets must be closed in the correct order. Note that an empty string is also considered valid.


    class ValidParenthesesFunc {
        func isValid(_ s: String) -> Bool {
            var stc = [Character]()
    
            for char in s {
                if char == "(" || char == "[" || char == "{" {
                    stc.append(char)
                } else if char == ")" {
                    guard stc.count != 0 && stc.removeLast() == "(" else {
                        return false
                    }
                } else if char == "]" {
                    guard stc.count != 0 && stc.removeLast() == "[" else {
                        return false
                    }
                } else if char == "}" {
                    guard stc.count != 0 && stc.removeLast() == "{" else {
                        return false
                    }
                }
            }
            return stc.isEmpty
        }
    }
    
    The above code will input 0(false). 
  • 2.  Write a program to find whether a string or number is palindrome or not.


    import java.util.Scanner;
    public class Palindrome {
        public static void main (String[] args) {
            String original, reverse = "";
     Scanner in = new Scanner(System.in);
           int length;
            System.out.println("Enter a number or a string");
            original = in.nextLine();
            length = original.length();
            for (int i =length -1; i>;=0; i--) {
                reverse = reverse + original.charAt(i);
            }
            System.out.println("The reverse is: " +reverse);
    
            if(original.equals(reverse))
                System.out.println("The string is a palindrome");
            else
                System.out.println("The stringis not a palindrome");
    
        }
    }
    
    Output:
    For String- Enter a number or a string
    sam
    The reverse is: mas
    The string is not a palindrome
    
    For Number-Enter a number or a string
    99
    The reverse is: 99
    The number is a palindrome 
  • 3. What will the output of the following code be?


    class Test {
    public static void main(String args[])
        {
            String str1 = new String("Hello World");
            String str2 = new String("Hello World");
    
            String str3 = "Hello World";
            String str4 = "Hello World";
    
            int a = 0, b = 0, c = 0;
    
            if (str3 == str4)
                a = 1;
            else
                a = 2;
    
            if (str1.equals(str3))
                b = 1;
            else
                b = 2;
    
            if (str1 == str4)
                c = 1;
            else
                c = 2;
            System.out.println("a= " + a + " b= " + b + " c= " + c);
        }
    }
    

    A. a=2 b=1 c=2
    B. a=2 b=2 c=2
    C. a=1 b=2 c=1
    D. a=1 b=1 c=2

    D. a=1 b=1 c=2 because a new memory is created when we make an object with the help of the ‘new’ keyword, 
    and the reference variable contains the memory location. 
    Here the memory is created with the same string twice, but since we are comparing objects and not strings, 
    the object will point to a different memory location and so they are not equal. 

    Parting thoughts


    That is everything you need to know about hiring a freelance Java developer. As discussed, it isn't easy to find a quality freelance Java developer but this guide makes the process easier for you. To offload the entire hiring process, reach out to us at Flexiple. We've designed a high-quality, 6-step screening process to find the top 1%, freelance developers. You can find the best freelance Java developers here. We've already served over a hundred clients, earning great reviews for the quality of service.

    Lastly, to quickly summarize it for you:
    1. Note your project requirements and hire accordingly. Do not go for the lowest or the highest-paid developer.
    2. Don’t hire without vetting- consider asking questions right from the basics to advanced to logical questions.
    3. Look for companies like Flexiple that help you find the perfect fit.

    Happy hiring! :)
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