Jobs

Seeking a Backend Developer (Games) to build and maintain server-side systems, game engines, and APIs for casino games. Requires strong Java skills and a passion for iGaming.

What You Will Do:

We are seeking a passionate and experienced Backend Developer, responsible for building the Server-side foundations of new and exciting Casino gaming projects. An ideal candidate will stay excited to take challenges, contribute towards building new verticals and depict strong entrepreneurial skills. Primary responsibilities of this position include building, maintaining, and optimising our Casino Game Server, Game Engines, Game APIs, and supporting tools.

Summary of Responsibilities:

• Designing, developing, and maintaining the back-end functionality, which involves high-volume transaction systems;
• Developing game engines and tools for the Casino Remote Game Server (RGS) from complex math models shaped into programming logic and data structures;
• Developing, enhancing and maintaining existing gaming API’s, game engines and providing Back-End development support for Front-End Developers;
• Experience in all aspects of application development lifecycle (analysis and design to implementation and support);
• Working closely with different interfaces such as Game Producers, Mathematicians, Statisticians, Front-end game developers, and QA;
• Coordinating the quality assurance, certification, and translation processes of the games;
• Researching, playing, and studying casino games to stay up-to-date with market trends and competition;
• Performing other tasks as required.

What you'll need to have:

• Strong track record of developing and maintaining Casino Game Engines with the successful production of impactful slot games;
• Excellent knowledge of Java;
• Experience with client-server integrations, multithreading and micro-service design;
• Experience of working with MongoDB, relational and/or NoSQL databases;
• Solid knowledge of Object-Oriented Programming, MVC and other design principles;
• Experience working with project tracking tools such as JIRA;
• Familiarity with Git and feature branching approach;
• Highly organised, experienced in running multiple projects and delivering to tight deadlines;
• Passionate about whatever you do and want to make a difference in the iGaming Industry;
• Knowledge or experience with various game development pipelines & methodologies;
• Knowledge about games and/or the casino industry, including the current market landscape;
• Experience working with multiple disciplines, including artists, mathematicians, software developers, etc., in creating games or products;
• Strong written and verbal communication skills.

Other Duties and Responsibilities:

• Participation in team brainstorming;
• Contributing to the review of other developers’ games and code;
• Contributing to the evolution of the team’s processes and best practices;
• Leadership attitude and not afraid to get your hands dirty;
• Excellent teamwork skills and ability to adapt.

Qualifications:

• Minimum 2-5 years of experience in related domains;
• Bachelor’s degree or higher in computer science.

The company offers:

• Flexible working hours;
• Free to work from any location;
• Great work-life balance;
• Company culture of transparency & openness;
• Further opportunities for personal development and influence on product direction.

If you find this opportunity right for you, don't hesitate to apply or get in touch with us if you have any questions!

We are hiring a Senior Backend Java Engineer for a fast-paced InsurTech project developed for a major U.S.-based client in the insurance sector. The project aims to modernize and expand an enterprise platform used for risk analysis, policy management, and real-time claims processing.

About the Project:

You’ll join a cross-functional engineering team building and optimizing a distributed, event-driven backend system designed to handle complex business logic at scale. The system leverages Java with Spring Boot, integrates with Kafka for asynchronous communication, and applies Domain-Driven Design (DDD) principles to model intricate insurance workflows. You’ll work with both legacy and new microservices, contributing to a large-scale modernization initiative in close collaboration with client-side stakeholders.

Key Responsibilities:

• Design and implement scalable backend services using Java and Spring Boot

• Refactor legacy components to align with modern design and coding standards

• Model complex business domains following DDD best practices

• Contribute to architectural decisions and propose technical improvements

• Write reliable tests with JUnit and Cucumber

• Collaborate closely with QA and product teams to ensure smooth delivery

• Participate in daily standups, sprint planning, and other agile ceremonies

Requirements:

• 6+ years of backend software development experience

• Strong expertise in Java and Spring Boot

• Solid understanding of event-driven architecture, preferably with Kafka

• Hands-on experience with testing frameworks like JUnit and Cucumber

• Practical knowledge of Domain-Driven Design principles

• Good communicator with at least B2-level English

• Ability to work independently in a remote, distributed environment

• Bonus: prior experience in the insurance domain or with large-scale enterprise systems

This is a 3–6 month full-time remote engagement starting in June 2025, with potential for extension based on project needs. You’ll work flexible hours with overlapping availability for client calls, alongside a supportive engineering team dedicated to continuous learning, quality delivery, and mutual growth.

The company, an innovative blockchain technology company, is looking for Principal EVM Software Engineer to work remotely.
 

This company is a technology company that uses a unique, patented consensus algorithm for the fully open-source platform. 

The platform's network services include smart contracts based on Solidity, as well as a native tokenization and consensus service used to create decentralized applications.

This cutting-edge technology is recognized as an alternative to traditional blockchain solutions due to its superior speed and scalability.

The platform's public network is governed by industry-leading organizations, spanning 11 sectors and 14 regions who oversee the development and direction of the decentralized platform.
 

The company's management board includes IBM, Boeing, Google, Deutsche Telekom, LG, and others.
 

You will be contributing to the performance and optimization of the native services (Java) and the web3 services (JS/TS) that process transaction bytes to transform the network node states and expose network block, transaction, and account data.
 

The company offers unlimited vacation and sick leave, stock options, paid work-related education/certifications, and workplace equipment.

Requirements: deep software development experience with Java, experience with JavaScript, people management and blockchain experience.

Practical experience with EVM-based blockchain wiil be a plus.

Fundomate is looking for a Senior Java Back-End Developer to join our team. Fundomate is an innovative fintech company operating in the alternative lending space and providing both direct-to-business and white-label turnkey solutions.

Please provide your CV and LinkedIn profile. We demand your LinkedIn profile with actual working experience to move forward with your application!

You will be good match if:

- You have history of solving non trivial problems in one of your previous projects

- You have wide technology background (backend, frontend, devops, ops, mobile development, etc), so you will understand the connections between technologies and expand this knowledge with domain and business needs. 

- You have experience working in US fintech domain 

We will be good match if:

- You want to solve (or learn to solve) complex business problems

- You want to experiment with processes/development technics/tools

- You are interested in continuous improvement and automation of product and working process

Requirements:

- 6+ years of experience developing web applications

- 3+ years of experience in any IoC & DI framework (Spring, Quarkus, Micronaut, etc.)

- TDD experience in production is a must have

- Good knowledge of MicroServices (Kubernetes knowledge is a plus)

- Experience working with tools like Git, Gradle, Jenkins or similar CI/CD

- Working experience in Industry Standard protocols related API Security including OAuth (KeyCloak is a plus)

- Working experience with RDBMs like Postgres/MySQL or any similar

- Understanding of asynchronous message-based communication like Kafka, GCP Pub/Sub, AWS SNS/SQS, etc. (Kafka as an advantage)

- Strong Agile/Scrum/Kanban development experience

- Experience in third party systems integration (XML or JSON api)

- Knowledge of any cloud provider (AWS as an advantage)

Our technical Stack:

- Java 21

- Microservices (Quarkus)

- Postgresql/MySQL

- Kafka

- Keycloak

- Kubernetes & Docker

- AWS (EKS, MSK, RDS, etc.)

- Gradle

- Bitbucket pipelines, gitops approach

- Lombok, MapStruct, Flyway

We also have a legacy system. We do not change it and replace it with microservices. So you will also spend time on reading legacy code.

Monolith tech stack:

- Java 8

- Play 1.5

- Mysql

- FreeMarker templates

We offer:

- Innovative product with modern technology stack

- Competitive salary (paid in $)

- Social package (paid vacations, sick leaves and etc)

- PE accounting and support

- WFH and remote working mode possibility, Ukrainian working hours

- No bureaucracy, micromanagement and time-tracking

We are developing a cutting-edge commercial web application for an advertising platform. The application’s purpose is to create and manage media content links from media platforms to merchandisers, leveraging AI to track and collect user experience statistics.

Our technology stack includes:

• Java 17 (Spring 6), PHP, Python, Servlets

   

• AWS: SQS, Athena, DynamoDB, S3, EC2, RDS, CloudWatch

   

• Auth0 for authentication

   

• Docker for containerization

   

• MySQL for data storage

Key Responsibilities:

• Lead the migration of existing Java applications from PostgreSQL to MySQL, ensuring data integrity, performance, and scalability.

   

• Develop and maintain Java-based backend services using Java 17, Spring 6, and related frameworks

   

• Implement RESTful APIs and integrate with front-end applications

   

• Collaborate with cross-functional teams to clarify requirements and deliver features on schedule

   

• Integrate with third-party services and data sources, including AI modules and media platforms

   

• Optimize application performance and scalability

   

• Write clean, maintainable, and well-documented code

   

• Contribute to continuous improvement of development processes and best practices

Requirements:

• Strong experience (at least 5 years) with Java 17, Spring Framework (Spring 6)

   

• Experience with servlet-based applications

   

• Familiarity with AWS services (SQS, Athena, DynamoDB, S3, EC2, RDS, CloudWatch)

   

• Experience with containerization using Docker

   

• Proficiency with MySQL and writing optimized SQL queries

   

• Understanding of Auth0 for authentication and authorization

   

• Strong problem-solving skills and ability to work independently and collaboratively

   

• Good communication skills and ability to participate in Agile development processes
   
• Upper-Intermediate+ English level, ability to communicate effectively in English

Nice to Have:

• Familiarity with PHP, Python for integrations and support tasks

   

• Exposure to AI-driven applications or advertising platforms

   

• Knowledge of microservices architecture
  
  We offer:

• Competitive salary, long-term employment;

• Honest attitude, individual approach, stability, and keeping promises;

• Flexible schedule, possibility to partially work from home or remotely;

• Personal Development Plan;

• English lessons;

• Support in the war-situation;

• Yoga classes 2 times per week;

• Personal Time Off (Kid’s activities, Car maintenance, Doctor appointment, etc.);

• Supportive and friendly team members.

Selection Process:
1. HR interview
2. Technical interview
3. Client interview

We’re building a pool of Java engineers (Java 11+, Spring Boot, Microservices, Kafka) for stable contracts with startups and tech companies.

🌍 Location doesn’t matter — we work remote-only
🎥 Short verification video required
💰 Rates: $18–23/h

📩 Interested? Drop your LinkedIn or CV — we’ll reach out when a fit arises.

About the Role

We are seeking a Java Developer with hands-on experience in telecom billing systems to join our technology team. The ideal candidate will be responsible for designing, developing, and maintaining Java-based applications that support mission-critical billing processes within a telecommunications environment. You will be responsible for adding new features, correct business process changes, bug fixing, different integration and correction of the customer portal.

Key Responsibilities

• Design, develop, test, and deploy scalable Java-based applications supporting telecom billing platforms.
• Work closely with Business Analysts and Product Owners to gather billing-related requirements and translate them into technical specifications.
• Integrate Java applications with rating, mediation, invoicing, and customer management systems.
• Enhance and maintain existing billing modules, ensuring they are accurate, compliant, and efficient.
• Optimize application performance, especially in high-volume transaction environments typical of telecom operations.
• Write and maintain technical documentation.
• Collaborate with DevOps, and support teams to ensure system stability and timely issue resolution.

Required Qualifications

• 2+ years of professional experience in Java Core development 
• Solid knowledge of object-oriented principles approach
• Understanding monolithic architecture and multi-threading.
• Experience in the telecommunications domain, especially with billing, rating, mediation, or revenue assurance. 
• Knowledge of telecom billing standards such as TPM (Telecom Product Management), RA (Revenue Assurance) processes, taxation processes management. 
• Familiarity with SOAP/RESTful APIs, SQL/PLSQL, and relational databases like MySQL, or Oracle, PostgreSQL. 
• Commercial experience in AWS services utilization 
• Perfect knowledge of GIT and delivery pipelines. 
• Comfortable working in a Linux environment for development, deployment, and troubleshooting.
• Experience with monitoring tools such as Grafana for troubleshooting.
• Experience in writing unit and integration tests.

Preferred Skills

• Experience with billing platforms development.
• Experience working with high-throughput transactional systems.
• Exposure to monolith and microservices architecture 
• Understanding of containerization tools like Docker or Kubernetes.
• Understanding of data processes, data transformation, and mediation engines.
• Knowledge of CI/CD pipelines, source control (Git), and agile development methodologies.
• Knowledge of PHP backend frameworks, HTML, CSS to support integration between billing and customer portal 

Soft Skills

• Strong analytical and problem-solving abilities.
• Excellent communication and documentation skills.
• Ability to work independently and within cross-functional teams including business team.
• Detail-oriented with a focus on delivering high-quality solutions.
• Good English speaking communication and writing skills

Education

• Bachelor’s or Master’s degree in Computer Science, Information Technology, or a related field.

Looking for a Java developer for our client from USA.

Key Responsibilities

• Design, develop and maintain backend services using Java 17+, Spring Boot and related Spring components.
• Build data-access layers with JPA / Hibernate and SQL.
• Deploy and operate services on AWS (ECS, S3, RDS, CloudWatch).

• Contribute to code reviews, technical discussions and continuous improvement initiatives.

   

Required Qualifications

• 5+ years of commercial Java development experience.
• Solid knowledge of Spring Framework (Boot, Data, Security).
• Hands-on experience with AWS cloud services (ECS, S3, RDS, CloudWatch).
• Proficiency in JPA / Hibernate and relational databases (SQL).
• Upper-intermediate or higher spoken and written English.
   

What We Offer

• 100 % remote engagement with flexible working hours.
• Dedicated mentorship from a Senior / Tech Lead-level engineer.
• Clear pathway to technical-leadership roles.
• Challenging, domain-critical tasks within a modern cloud environment.
• Knowledge-sharing culture and support from an experienced, collaborative team.

About the Role:

We need a Tech Lead to guide our team as we fold a new Payment Hub into two existing platforms. Our team has about 60 microservices built on the latest Java and Spring. You’ll work with 13 Java devs, 2 React devs, 2 QA engineers, and an Architect. You’ll own both backend and some frontend work. On the backend, you’ll use Java 16 (and Java 23 for new services) with Spring Boot 2.4 and Spring 3.4.2 to build and improve microservices. On the frontend, you’ll use React. You’ll shape the architecture, run code reviews, and work with DevOps to run things on AWS.

What We’re Looking For:

• 5+ years in Java (8+) with Spring Boot (2.x). Java 16 is a plus; we use Java 23 and Spring 3.4.2 for new services.

• React experience—build components, manage state, connect to REST APIs.

• Hands-on AWS skills—EC2, RDS, S3, CloudWatch must be solid.

• Microservices architecture—REST API design, scaling, fault tolerance.

• Maven, PostgreSQL, Redis, and Liquibase for database changes.

• Keycloak or similar auth/SSO experience.

• Docker and Kubernetes basics; familiarity with Ingress and Nginx.

• CI/CD pipeline setup and maintenance GitLab.

• Messaging and search tech—experience with SQS, Kafka, Elasticsearch, or OpenSearch.

• Clear communication and mentoring—you’ll guide junior devs and work with QA.

• Understanding of payment flows and high-load financial systems.

Nice to Have:

• AWS networking—VPC, Route 53, ELB, and Secrets Manager.

• Terraform, terragrant or Helm for infrastructure as code.

• Configure ingress rules

• Gherkin language for cucumber framework 

• Node.js tooling for frontend builds or scripts.

What You’ll Do:

• Lead design and build of Java microservices (part of those 60+ services).

• Set coding standards, run code reviews, and keep quality high.

• Conduct tech interviews and help hire strong team members.

• Participate in tech talks—share knowledge and learn from others.

• Take ownership of features and guide juniors through designs and best practices.

• Work with DevOps to spin up AWS resources, containers, and pipelines.

• Troubleshoot production issues and provide on-call support.

• Coach junior team members—pair-programming, design discussions, skill tips.

• Drive continuous improvement—better performance, cleaner code, smoother releases.

We offer:

• Flexible work schedule remotely
• Paid sick leave and vacation days
• Necessary equipment for work as needed
• Opportunity to participate in company's internal events: open discussions
• Product meetups and training sessions on soft skills development
• Absence of micromanagement, hierarchy, quick decision-making.

 
If you’re ready to bring your expertise to a dynamic and growing team, join us and be a part of our exciting journey.

Job Description

We are looking for a Java Developer to join our growing engineering team. In this role, you’ll contribute to the development of robust, scalable applications and services that power our health intelligence platform. You’ll work closely with other developers, DevOps, and product teams to create impactful solutions that help users optimize their health.

Key Responsibilities

• Participate in all phases of the software development lifecycle
• Write clean, maintainable, and scalable Java code
• Ensure that design and implementation comply with technical specifications
• Participate in code reviews, testing, and debugging
• Collaborate with cross-functional teams to troubleshoot and resolve issues
• Continuously improve the performance and reliability of backend services

Requirements

• BS/MS in Computer Science, Engineering, or a related field
• 5+ years of professional experience in Java development
• Proficiency in Java 8 or higher
• Strong knowledge of the Spring Framework
• Experience building and consuming RESTful APIs
• Familiarity with *nix-based operating systems
• Solid understanding of SQL and relational databases
• Good written and verbal communication skills in English

Preferred Qualifications

• Experience working in Agile/Scrum environments
• Understanding of microservices architecture
• Familiarity with cloud platforms such as AWS, Azure, or GCP
• Experience with NoSQL databases (e.g., MongoDB, DynamoDB)
• Proficiency with build tools such as Maven or Gradle
• Knowledge of CI/CD processes and tooling

About the Role:

We are seeking a Junior Java Developer to join our team as we integrate and enhance a newly acquired core platform with limited initial functionality. You will work under the guidance of senior developers, focusing on adding and refining backend features using Java 16, Spring Boot 2.4, and related technologies. This role will help you gain hands-on experience within a modern AWS-based environment, learning best practices in coding, testing, and deployment.

What We’re Looking For:

• Basic understanding of Java 8+ (Java 16 preferred) and OOP principles.
• Some experience in Spring Boot.
• Familiarity with Maven (gradle) for build and dependency management.
• Knowledge of relational databases (PostgreSQL) and caching (Redis).
• Interest in working within a cloud environment (AWS) and using GitLab for version control.
• Basic understanding of RESTful APIs and microservices concepts.
• Good written and spoken English skills.

Nice to have:

• Exposure to Keycloak for authentication/authorization.
• Familiarity with Liquibase for database migrations.
• Understanding of containerization tools like Docker and orchestration platforms like Kubernetes.
• Any prior knowledge of Terraform, Helm, or AWS services like S3, EC2, and RDS.

What You’ll Do:

• Assist in implementing and maintaining Java-based backend services and integrations.
• Write clean, maintainable code and participate in code reviews with senior team members.
• Test, debug, and resolve issues in backend components.
• Collaborate with other teams to integrate platform functionalities into existing applications.
• Learn best practices for CI/CD, containerization, and cloud deployments.
• Communicate progress, challenges, and outcomes to the development team.

We offer:

• Flexible work schedule remotely
• Paid sick leave and vacation days
• Necessary equipment for work as needed
• Opportunity to participate in company's internal events: open discussions
• Product meetups and training sessions on soft skills development
• Absence of micromanagement, hierarchy, quick decision-making.

 
If you’re ready to bring your expertise to a dynamic and growing team, join us and be a part of our exciting journey.

We are looking for Senior Software Engineer

Minimum 3 years of professional experience in software development using one or more OOP languages (e.g., Java, PHP).

Strong knowledge of OOP principles, design patterns, and best practices.

Experience with modern frameworks such as Laravel, Spring boot, Quarkus, or similar.

Solid understanding of relational databases (MySQL, MariaDB) and NoSQL systems such as MongoDB.

English - upper intermediate

Fintech. European client.
English B2+

Must have - experience within contract management systems for leasing.
 ⁃ Strong experience with Java EE
 ⁃ Practical experience with EJB, JMS, CDI, REST/SOAP, Hibernate, Maven and Git
 ⁃ Experience with JBoss / Camunda
 ⁃ Very good knowledge of SQL and relational DB
 ⁃ Experience with microservice architectures and container technologies
 ⁃ Initiative and the ability to generate ideas/provide solutions, not just code
 ⁃ Very good soft skills


We offer:

• Cooperation with a stable company with well-established processes and a positive atmosphere
• Experience in project management of different levels of complexity, methodology, and approaches
• Flexible schedule: Mon-Fri (8 hours a day)
• 18 days of paid vacation; 15 days sick leave
• A decent level of remuneration with regular reviews of the results of cooperation
• Extensive loyalty program 

On behalf of our Client, a well-established financial institution from the Caribbean region Mobilunity is looking for a Java Technical Lead. 

Our Client is the largest bank in the Caribbean region that serves 14 countries/territories. The aim is to make this organization from a traditional bank into a new era of fintech, working on the edge of what current fintech may offer.

Requirements:

• Experience as a Technical Lead.
• Proficiency in Java and corresponding frameworks.
• Strong knowledge of database technologies and web server technologies (e.g., Apache, Nginx).
• Familiarity with version control tools such as Git and experience with RESTful API development.
• Excellent problem-solving skills, communication skills, and attention to detail.
• Bachelor’s degree in computer science, Software Engineering, or related field.
• Level of English – Upper-Intermediate and higher.

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups

We are seeking an experienced and visionary Middle Java Developer who will play a key role in our software development initiatives. Working as a developer on this project requires the mindset of someone who is able to plan, build, and deliver tasks as part of a team. As a solid group, we share responsibility for the product delivery, including speed, efficiency, and quality. But we also take full responsibility for the operational condition of what we deliver. 
👉 We are only considering candidates who are currently based in Warsaw.
  
As an individual, you need to take ownership, drive initiatives forward, and suggest and incorporate improvements in all areas.  
  
If this approach resonates with you, we invite you to join us!  

CUSTOMER
Our Customer owns one of the largest mobile gambling platforms with millions of users.  

PROJECT
We work with a big company on a project, following a startup approach. We use a state-of-the-art technology stack.  
  
It is a new proprietary multi-brand platform that will allow the Swedish operator to launch new brands under the collective name and will allow the launch of new brands with a high level of flexibility and scalability.

Job Description

• Provide day-to-day communication with stakeholders and the team to achieve a common goal
• Design separate components, modules, classes, database tables, etc.
• Code, debug, document, and maintain portions of software
• Investigate manager requests, suggest solutions, and engage other team members when required 
• Clarify requirements, split tasks into the sub-tasks, and estimate them
• Create technical specifications
• Perform unit and integration testing
• Take full responsibility for the results of your work and proactively resolve issues as they arise 

Qualifications

• 3+ years of practical experience with Core Java, including Java 8–17 
• Proficiency in Spring Boot 
• Solid experience in SQL 
• Experience with RabbitMQ or any other message broker 
• Experience in ELK, Datadog, or any other monitoring tools 
• Upper-Intermediate level of English  

WOULD BE A PLUS

• Knowledge of Kotlin and Kafka