Java Jobs in Web3

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Job Position Company Posted Location Salary Tags

OpenTag

Sofia, Bulgaria

$98k - $100k

Crypto.com

Singapore, Singapore

$106k - $110k

Crypto.com

Shanghai, China

$112k - $156k

Zinnia

Remote

$87k - $102k

Chainalysis

London, United Kingdom

$98k - $210k

Chainalysis

Toronto, Canada

$87k - $100k

Falconx

Remote

$80k - $107k

Elwoodtechnologies

Remote

Blockchain & Climate Institute

Remote

$112k - $126k

Bitso

Latin America

$106k - $114k

Finra

Washington, United States

$36k - $81k

Binance

Bangkok, Thailand

Binance

Taipei, Taiwan

Capco

Remote

$112k - $156k

OpenTag
$98k - $100k estimated
23 Sofia BG
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OpenTag is a well-funded International company within the field of Sports Betting and Gaming.

Our mission is to create the best software through empowered teams, centralized around our product. We do this to help great organizations reach ambitious goals and fulfill their purpose with equally great teams.

Our platform is built in Golang and Java(Spring/boot) with heavy usage of best practice packages, development approaches, and infrastructure.  We take special pride in progressive thinking.

What will you do? What tech do we use?

You will become part of a well-functioning Scrum Team.

Your focus will be a microservice-based betting platform, created with Apache Thrift, Kafka, GraphQL, Java, Go, PHP, TypeScript, React.

And your day-to-day work will be related to TypeScript, GitLab, Kafka, Google Cloud, Kubernetes, Docker.

You will actively participate in the creation and maintenance of the in-house built testing framework.

You will participate in the technical discussions with stakeholders (Product Owners, Delivery Managers & etc.) regarding product requirements and the delivery process.

Creating test cases based on product requirements and defining the automation scope would be, also part of your tasks.

Investigate root cause of issues to assist with finding the most comprehensive and robust solutions.


  • 1+ years of experience in automation testing

  • Experience in an object-oriented language such as Java/C#, JavaScript (TypeScript)

  • Experience with GitLab, CI tools, Playwright, Selenium WebDriver

  • Experience with REST API testing, GraphQL will be an advantage

  • Experience with databases (SQL AND/OR no-SQL)

  • Experience with Performance testing (K6)

  • Experience in QA methodologies, clear understanding of QA processes and artifacts

  • Experience with test management systems such as Xray

  • Experience with Jira & Confluence

  • Upper-Intermediate English

Would be a plus:

  • Experience with Docker, Kubernetes

  • Experience with BDD, Gherkin syntax

  • Experience with Karate framework

The recruitment process includes an HR Interview, 1st Technical Interview, Final interview, Offer, and an Onboarding Plan.

On your first day, you will be met by an HR Representative, who will introduce you to the company, and conduct a tour of the office. Everything you need will be waiting for you (laptop, workplace, welcome package).

You will have the opportunity to meet colleagues during lunch or coffee breaks. We will do everything necessary to make you feel comfortable and support you during and after the adaptation period.


Your onboarding will continue with meeting the important stakeholders working with your team. In addition, you will have regular 1:1 meetings with your manager where you can receive and give feedback. Later on, you will get acquainted with our employee development program.


Our routine at OpenTag:

We’re pretty proud to be working here, and we hope you’ll be too. It’s essential that we don’t like micromanagement.

Do your job. If you want help - come and ask for it. No one will track your time or check you every 30 minutes to see how it’s going.

The position is hybrid: 3 days in the office (for collaboration and team synergy) and 2 days remote (for flexibility and focus). 

Our office at Pope John Paul II 6 is an amazing space with its own barista, incredible colleagues, and a rooftop terrace - the perfect environment for both work and creativity! ☕🌇

What do We offer?

  • Fast recruitment process - an interview and then possibly an offer in a matter of a few working days

  • Excellent remuneration

  • Great office space with amazing colleagues

  • The opportunity to build a scalable online betting platform from scratch

  • Work with the latest technologies

  • 25 vacation days a year + a day off for your birthday

  • Premium Health Insurance

  • Birthday vouchers

  • Office snacks and team lunches

  • Sports Card

  • Transportation and food allowance

  • Quarterly team events

  •  ... and many more!

What does a Java developer in web3 do?

A Java developer in web3 would likely be focused on developing applications that use the Java programming language in the context of the web3 technology stack

Web3 is a collective term used to refer to the next generation of decentralized, blockchain-based technologies that are aimed at creating a more open and secure internet

In this context, a Java developer would be responsible for writing code that interacts with web3 technologies, such as decentralized applications (DApps) and smart contracts, to create new tools and services that run on the blockchain

This could involve working with cutting-edge technologies such as Ethereum, which is a popular blockchain platform that uses the Java programming language, as well as other web3 technologies and frameworks.