Mid-Senior Java Software Engineer

The TeamOpenBet stands as a premier global provider in the betting and gaming entertainment industry, partnered with over 200 clients to craft unforgettable winning moments for millions of players globally. From managing bets during landmark events such as the FIFA World Cup and the Super Bowl to developing innovative products like BetBuilder, we are committed to enhancing the player experience with top-tier content, state-of-the-art technology, and robust player protection mechanisms.For more than 25 years, our unparalleled platform has fueled the most prominent betting brands, maintaining optimal performance with 100% uptime, unmatched scalability, and rapid response times. With 85 licenses and a clientele that includes 20 operators from the World Lottery Association, our team of over 1,200 experts across 14 countries remains at the forefront of the industry. Join OpenBet and elevate your career by being part of a dynamic global team that is shaping the future of betting entertainment for millions.The GoalAs a Senior Software Engineer at OpenBet, you will gain exposure to vital systems, along with comprehensive training and mentorship to advance both our software and your professional growth.Your Responsibilities:Develop new features and functionalities for high-transaction, large-scale betting platforms and systems;Lead design and code reviews;Identify and resolve performance bottlenecks in the software;Design modular, scalable, and portable solutions; spearhead enhancements to system architecture;Mentor, guide, and potentially manage junior software engineers;Collaborate with customer stakeholders to communicate complex technical concepts.Your Profile:A bachelor’s degree in computer science, engineering, or information systems from a recognized institution;Proven programming proficiency in Java;Strong foundational programming skills (data structures, algorithms);Experience in database design and optimization (any vendor);Familiarity with web technologies and internet protocols (SOAP, WS-*, ReST, XML, HTTP, TCP/IP);Exceptional communication skills, both written and verbal;6+ years of professional software development experience.Preferred Skills and Experiences:Experience in Linux development;Proficiency in TCL;Web development experience with React, HTML, HTML5, and CSS;Knowledge of Agile methodologies, Scrum, BDD, TDD;Experience with Jenkins or other CI tools;Good understanding of Git or other version control systems;Scripting knowledge in Bash, Perl, Python, and JavaScript;Experience developing software that integrates with third-party systems;Background in software development for high-availability environments.

Join Our Innovative TeamOpenBet is a pioneering force in the global betting and gaming entertainment sector, collaborating with over 200 partners to deliver unforgettable winning experiences to millions of players around the globe. From facilitating bets during globally significant events such as the FIFA World Cup and the Super Bowl to innovating next-generation products like BetBuilder, we are committed to redefining player experiences with top-notch content, state-of-the-art technology, and advanced player protection mechanisms.With over 25 years of industry leadership, our robust platform supports some of the most recognized betting brands, ensuring peak performance with 100% uptime, exceptional scalability, and rapid processing speeds. Boasting 85 licenses and serving 20 World Lottery Association operators, our team of more than 1,200 professionals across 14 countries keeps us at the forefront of the industry.Your Role and ResponsibilitiesDesign and develop new features and functionalities for customer products and services, including generating unit tests as necessary;Maintain high standards of code quality for the products and services developed by your team;Participate in planning sessions and contribute valuable insights;Identify and escalate issues related to performance, security, and scalability that require significant improvement;Develop a comprehensive understanding of the system architecture and design components to meet product requirements;Align development processes with the technical methodologies prevalent in the broader organization;Utilize Agile development processes effectively;Collaborate within a self-organizing Agile team to create new features and functionalities for large-scale betting websites;Write robust, clean, and efficient code following practices such as Test-Driven Development (TDD);Gather and define customer requirements using Behavior-Driven Development (BDD) techniques;Create solutions that are modular, scalable, and portable.What You Bring to the TeamA Bachelor's degree in a relevant scientific discipline, preferably in computer science, engineering, or information systems from a reputable university;2-4 years of experience in a development environment;Proficiency in one or more major programming languages (such as Java, C/C++, Python, PHP, TCL) and a willingness to learn additional languages;Experience with Agile methodologies including Scrum, Lean, and Kanban;Strong teamwork and collaboration skills within an Agile team setting;Excellent communication skills, both verbal and written, including the ability to present to peers;A proactive attitude and innovative problem-solving abilities;Capability to adapt to changing priorities and deliver results.

The TeamOpenBet stands as a premier global authority in the realm of betting and gaming entertainment, relied upon by over 200 partners to craft unforgettable winning experiences for millions globally. From managing bets during monumental events such as the FIFA World Cup and Super Bowl to innovating next-generation products like Bet Builder, we are constantly reshaping the player experience with superior content, innovative technology, and advanced player protection measures.With a legacy spanning over 25 years, our unparalleled platform has fueled the most recognizable betting brands, guaranteeing peak performance with 100% uptime, unmatched scalability, and speed. Holding 85 licenses and counting, alongside 20 World Lottery Association operators in our clientele, we boast a robust team of over 1,200 experts across 14 countries. Join OpenBet to elevate your career and collaborate with a global team at the forefront of shaping the future of betting entertainment for millions.The GoalWe are in search of a driven and ambitious Senior .NET Software Engineer to propel Sportcast's growth from our European offices.As a Senior Software Developer within the Trading & Data Solutions team, you will engage in a cross-functional capacity, developing, deploying, and supporting various projects and initiatives. You'll have the chance to work on diverse projects, producing code that is both testable and maintainable. As a valued team player, your contributions will be instrumental in team design, scoping, and prioritization discussions. This team is dedicated to assisting the business in achieving scalability through automation.Your role will encompass the development and maintenance of real-time systems.What You’ll Be DoingAnalyze and question business requirements critically.Actively participate in solution design efforts.Ensure our systems' performance, security, and availability.Develop high-quality, high-performing code aligned with business needs.Optimize solutions to support service levels while minimizing cloud expenses.Mentor fellow team members.Automate processes wherever feasible.Challenge existing practices to enhance our patterns, standards, and procedures throughout the organization.The Player5+ years of experience with .NET/.NET Core and C#Familiarity with Unit Testing, serverless technologies like Azure Functions, and containerized microservices using Azure Container Apps or AWS equivalentsExtensive expertise in SQL-based databases, including MSSQL and PostgreSQL, with a strong grasp of query optimization, indexing strategies, and performance tuning for large-scale, high-throughput applicationsProficient in utilizing GitHub Copilot and Cursor AI to enhance development speed while ensuring secure and compliant coding practices

Join Our TeamAt OpenBet, we pride ourselves on being a premier global leader in betting and gaming entertainment. Trusted by over 200 partners worldwide, we are dedicated to creating unforgettable winning moments for millions of players. Our innovations have transformed the player experience, from processing bets during major events such as the FIFA World Cup and Super Bowl to developing cutting-edge products like BetBuilder. We are committed to delivering high-quality content and advanced player protection tools.For more than 25 years, our industry-leading platform has powered the most recognizable betting brands, ensuring peak performance with 100% uptime, unmatched scale, and speed. With 85 licenses and a team of over 1,200 experts across 14 countries, we continue to be at the forefront of the industry.Your MissionWhat You Will DoDevelop and enhance features for high-transaction, large-scale betting websites.Engage in design and code reviews to ensure quality and efficiency.Identify and resolve performance bottlenecks within the software.Create modular, scalable, and portable solutions.Contribute to the overall system architecture while designing components that align with our objectives.Work on full stack, end-to-end solutions.Collaborate with and learn from seasoned team members.Your ProfileWhat You BringIf you are the right candidate for this Software Engineer role, you will have:A minimum of 3 years of hands-on experience in designing and developing applications using Java Enterprise platforms, particularly in UNIX/Linux environments.Proficiency in the Spring framework (Spring Boot, Spring MVC).Strong understanding of Relational Databases, SQL, and ORM technologies such as JPA and Hibernate.Experience in developing distributed systems with a solid grasp of concepts like caching, interprocess communication, and brokering.Excellent communication skills, both written and verbal.Familiarity with microservices architecture and distributed systems.A quick ability to learn and adapt to new technologies.Experience with Test-Driven Development (TDD) and/or Behavior-Driven Development (BDD).Bonus QualificationsExperience developing applications on Unix/Linux.Familiarity with web technologies and internet protocols (REST APIs, JSON, XML, HTTP, TCP/IP).Experience with Maven and automated testing frameworks.Knowledge of third-party system integration.Familiarity with messaging systems such as Kafka and RabbitMQ.Experience with version control (Git), CI/CD tools (Jenkins, Bitbucket), and containerization technologies (Docker, Kubernetes).Knowledge of infrastructure-as-code tools (Terraform, Ansible).Experience with cloud services, preferably AWS.Scripting skills in Bash, Perl, Python, or JavaScript.

About UsAgile Actors is a dynamic tech company dedicated to enhancing and empowering technical teams for both international and local clients. Our distinct combination of coaching, ongoing education, and innovative practices fosters an environment where professionals not only contribute, but also thrive.When you join Agile Actors, you become part of diverse, agile teams working on cutting-edge solutions. Our talented professionals collaborate with global leaders in their fields, such as Austrian Post, Red Hat, and Swissquote, among others.We believe that work is more than a job; it should be a space where individuals flourish. Our recognition as a Great Place to Work 2026 underscores our commitment to nurturing an environment where talent, passion, and growth can prosper.Our Core ValuesPurpose-drivenAdventurous spiritAgilityRespect and EmpowermentAuthenticity and TrustEvolving alongside our clientsWho We’re Looking ForWe seek passionate tech professionals who possess a strong sense of purpose, curiosity, and a desire to make a genuine impact. If you view challenges as opportunities and thrive in collaborative environments, you will find your place with us.At Agile Actors, you will embrace adventure and adaptability, ready to implement innovative ideas in a fast-paced context. You will join one of our local teams in Athens, working alongside talented clients to deliver impactful solutions that shape the future of technology. As you engage with projects from global leaders, you will continuously evolve in a supportive environment built on trust, respect, and empowerment.

Role Overview Intralot is seeking a Senior Software Engineer with strong Java expertise to help build and improve software for gaming and lottery systems. This role focuses on designing and developing solutions that support the company's products and services. What You Will Do Develop and maintain Java-based applications for gaming and lottery platforms. Collaborate with team members to solve technical challenges and deliver new features. Contribute to the architecture and design of scalable, reliable systems. Location This position is based in Athens, Attikí, Greece.

IKH is a premier Software and Robotics Solutions provider making significant strides in the global market. Over the past few years, our team has expanded by over 80%, leading us to relocate to a modern, spacious office. As we embark on 2025, we're excited to introduce several innovative projects focused on digital transformation, custom software development, and robotics.We are currently seeking a talented Senior Java Software Engineer with a robust technical background and extensive experience to tackle challenging outsourced projects.In this position, you will not only develop complex project tasks but also supervise the development efforts of junior developers. You will analyze functional requirements and decompose tasks for team assignment.To thrive as a Senior Software Developer, you should possess profound knowledge of Java technologies and exhibit strong leadership capabilities. Exceptional communication skills are essential as you will collaborate with clients and various development teams.Your Daily Responsibilities:Design, develop, and maintain the back-end of large-scale web-based Java EE/Spring applications.Engage in technical analysis, documentation, implementation, and integration.Test and manage early support for core software tools and assets developed during software projects.Translate requirements into functional specifications.Employ BDD (Behaviour-Driven Development) methodology in coding and software implementation.Align solutions with client needs, particularly in collaboration with the architecture team.Execute integrations with other applications and developed modules.Provide assistance with deployment and configuration management.

Join Our Innovative TeamAt Sportcast, a pioneer in sports betting engagement, we revolutionized player experiences with our cutting-edge technologies and pricing strategies. Our flagship product, BetBuilder, is an award-winning innovation that transforms the betting landscape, allowing players to delve into billions of unique combinations across sporting events. As part of OpenBet, we have united top developers, statisticians, and data scientists, all dedicated to shaping the future of sports betting. Our mission is to provide unprecedented access to betting opportunities, creating thrilling moments for players worldwide.We invite you to become a part of Sportcast's dynamic team at OpenBet, where your contributions will drive our growth from our European offices.Your Role as a .NET Software EngineerAs a member of the Trade team, you will collaborate with a diverse group of professionals to develop, deploy, and maintain innovative projects. You'll have the chance to write high-quality, testable code while participating in design and prioritization discussions. Our focus is on supporting business scalability while ensuring top-notch quality in our deliverables.Key ResponsibilitiesWrite high-quality, efficient code that meets business needs.Optimize our solutions to uphold service levels and reduce cloud costs.Automate processes wherever feasible.Challenge existing norms and enhance our organizational standards and procedures.

Join Workable, the leading provider of an all-in-one HR suite designed for over 31,000 businesses and HR teams. Our innovative solution combines the globally recognized Applicant Tracking System (Workable Recruiting) with a comprehensive employee management system (Workable HR). At Workable, we empower organizations to prioritize what matters most: recruiting the right talent and nurturing their development.We pride ourselves on our vibrant and collaborative culture, where talented individuals thrive while having fun, learning, innovating, and assisting others in their growth. We respect every team member, hire top talent, and ensure every experience is memorable.We are expanding rapidly and are seeking a Senior Software Engineer to enhance our Product team!Our engineering culture is robust, emphasizing customer-centric design. We are involved in a variety of stimulating application development areas, including web and mobile applications, infrastructure, performance optimization, UI/UX design, integration with numerous web services, API development, modern front-end frameworks, scalability, video technology, natural language processing, data science, and usability engineering. We practice Agile methodology and test-driven development daily!Our technology stack includes Rails, Node, Python, and Java applications utilizing PostgreSQL, MongoDB, RabbitMQ, Redis, and Elastic, all deployed on Kubernetes and GCP. We are on the lookout for developers across all domains of SaaS application development, with various teams focusing on different aspects from core applications to mobile/tablet applications and beyond. We'll align you with the right team based on your expertise and interests.

Join Our TeamOpenBet stands at the forefront of the global betting and gaming entertainment industry, partnering with over 200 clients to deliver unforgettable winning moments to millions of players worldwide. From managing bets during monumental events such as the FIFA World Cup and Super Bowl to innovating next-generation products like BetBuilder, we are committed to continuously enhancing the player experience through exceptional content, state-of-the-art technology, and advanced player protection measures.For more than 25 years, our unparalleled platform has powered the most recognizable betting brands, providing peak performance with 100% uptime, unmatched scalability, and remarkable speed. With 85 licenses in our portfolio, 20 World Lottery Association operators among our clients, and a talented team of over 1,200 experts across 14 countries, we are undeniably at the heart of the industry. Step into your future with OpenBet and contribute to a global team that is redefining the future of betting entertainment.Your RoleAs a Platform Engineer at OpenBet, you will play a critical role in the design, construction, and maintenance of the cloud infrastructure that supports our leading sports betting platform. Utilizing your expertise in Microsoft Azure, Azure DevOps, and Terraform, you'll ensure our systems are scalable, secure, and resilient, fulfilling the demands of users across the globe.This position calls for a strategic thinker who excels in collaborative settings, drives automation, and advocates best practices in cloud engineering. You will collaborate with cross-functional teams to innovate and optimize our platform, enabling seamless delivery of real-time betting experiences.Key ResponsibilitiesDesign, deploy, and manage scalable, secure, and cost-effective cloud solutions on Microsoft Azure.Optimize infrastructure for high availability, disaster recovery, and performance across global regions.CI/CD Pipelines & DevOps PracticesDevelop and maintain robust CI/CD pipelines using Azure DevOps to facilitate rapid, reliable software delivery.Automate deployment processes, monitor system performance, and ensure compliance with industry best practices.

Join Our Team as a Full-Stack Java Software Engineer!Core Values: Trust | Respect | Team SpiritOur Key to Success: Our dedicated team members who enhance our projects with their skills and integrity!Your daily tasks will encompass back-end development and testing of web applications utilizing the Java programming language (version 8 and above). Collaborate in a dynamic environment that fosters both professional growth and team collaboration.

Role Overview Avis Greece is looking for a Seasonal Parking Agent in Athens. This role focuses on preparing vehicles for delivery and inspecting them when they return from rental. Main Responsibilities Prepare vehicles and check additional equipment such as GPS units and Wi-Fi devices before handing them over to customers. Inspect the condition of vehicles and any rented equipment when customers return them. Complete reservations by finalizing contracts in the system and recording any necessary damage compensation. Monitor and maintain the parking area to ensure it stays organized and safe. Provide helpful and attentive customer service throughout the process.

Location: Our Athens office is located in Marousi. On-site presence is required for two days each week.The TeamOpenBet stands at the forefront of the global betting and gaming entertainment sector. Trusted by over 200 partners, we craft unforgettable winning experiences for millions of players globally. Whether we’re processing bets during landmark events like the FIFA World Cup and Super Bowl or innovating with next-gen products like BetBuilder, we are committed to elevating the player experience through high-quality content, pioneering technology, and state-of-the-art player protection tools. For more than 25 years, our unparalleled platform has been the powerhouse behind the most recognizable betting brands, ensuring peak performance with 100% uptime, unmatched scalability, and rapid speed. With 85 licenses and a roster of 20 World Lottery Association operators, our team of over 1,200 experts across 14 countries is dedicated to leading the industry. Join OpenBet to advance your career and contribute to a global team that is reshaping the future of betting entertainment for millions around the world.The GoalAs a key member of our global team, the Customer Success Engineer will be instrumental in managing the centralized communications for client integrations with both internal and external partners. Your role will involve delivering professional, accurate, and timely services while managing client expectations, triaging, and resolving issues throughout the integration process, and handling communication for B2B customers.You are an exceptional communicator with solid technical skills and industry knowledge, enabling you to assist customers in efficiently implementing SportCast's product suite. Flexibility and a collaborative spirit are essential as you will interact with clients from around the globe.Primary ResponsibilitiesManage client integrations via Slack and email channels.Respond promptly to all integration inquiries and testing requests.Triage, troubleshoot, and resolve customer issues related to testing and integration environments.Classify and prioritize issues for escalation to the appropriate technical teams.Oversee the creation, maintenance, and sharing of all integration documentation related to all SportCast products.Stay updated with internal Standard Operating Procedures.Develop expert knowledge of BetBuilder products, business partners, company organization, and industry specifics.Identify and recommend automation opportunities to streamline manual tasks.Other duties as assigned.

Join INTRALOT as an Application Support EngineerYour Role: As an Application Support Engineer, you will play a vital role in maintaining the smooth functioning of our applications. Your responsibilities include:Monitoring and addressing production issues at the 2nd level within specified timelines.Quickly initiating a 'Problem' report when the root cause of an incident is not identified.Performing in-depth troubleshooting for incidents and problems in production.Taking ownership of problem tracking and monitoring with a goal to improve processes for recurring issues.Reproducing incidents and confirming fixes through comprehensive regression testing.Contributing to root cause analysis initiatives to avert future outages or quality challenges.This role requires flexibility, as it may involve shift work and occasional international travel to serve our global clientele.

At GRNET S.A., we are dedicated to bridging the digital divide by providing top-tier Internet connectivity and e-Infrastructures to the Greek Educational, Academic, and Research community. Our mission is to facilitate equal participation in the global Society of Knowledge, serving sectors such as Education, Research, Health, and Culture.We are currently seeking a talented Java Developer to join our innovative team. In this role, you will be instrumental in designing and implementing solutions that expand our service portfolio, which features scalable and modular offerings for big data analytics (e.g. ARGO Monitoring Service) and Identity Management (e.g. RCIAM).As part of our team, you will contribute to the development of services for the European eInfrastructures, including the European Open Science Cloud (EOSC), and support the European research and education community.You will collaborate with a group of highly skilled engineers committed to delivering critical services while ensuring optimal availability, performance, and security. Our team thrives on innovation, automation, and the pursuit of excellence, providing substantial value to GRNET and its users.

Role overview Ballys Central Lotsa is looking for a Senior Java Software Engineer in Athens, Attikí, Greece. This position focuses on designing, building, and maintaining complex software systems that support core business needs. What you will do Design, implement, and support Java-based software solutions Work with teams across disciplines to clarify and refine project requirements Help ensure deliverables meet quality standards and business goals

Join Our TeamOpenBet stands at the forefront of global betting and gaming entertainment, collaborating with over 200 partners to deliver unforgettable winning experiences to millions worldwide. Whether it's processing bets during monumental events like the FIFA World Cup and Super Bowl or innovating next-generation products like BetBuilder, we are committed to continuously enhancing the player experience with top-tier content, state-of-the-art technology, and advanced player protection measures.With a legacy spanning over 25 years, our unparalleled platform has supported the most renowned betting brands, guaranteeing peak performance with 100% uptime, exceptional scalability, and rapid processing. Boasting 85 licenses and a robust client base of 20 World Lottery Association operators, our team of more than 1,200 professionals across 14 countries is at the heart of the industry. Elevate your career with OpenBet and become part of a global team that is shaping the future of betting entertainment.Your RoleWe are seeking an enthusiastic Operations Support Engineer to join our dynamic team. In this pivotal role, you will support, debug, and enhance the performance and functionality of our applications and systems operating in high-availability production environments. Your contributions will be vital as you work with our products and advance your career.Key ResponsibilitiesTake ownership of investigating various production issues at both application and database levels.Develop robust, well-structured solutions to production problems.Communicate investigation statuses effectively to the customer.Deploy fixes to production environments.Escalate issues to senior team members as needed.Assist in creating and maintaining support documentation, including FAQs, knowledge base articles, and troubleshooting guides.Participate in a rotational schedule that includes weekend and holiday work.Your ProfileIf you are the ideal candidate for the Operations Support Engineer position, you will possess:A Bachelor's degree in a relevant scientific discipline, preferably in computer science, engineering, or information systems from a reputable university.2-3 years of experience in an application support role, demonstrating a strong record in technical investigation and problem-solving.Hands-on experience with at least one major programming language (Java, J2EE, C, C++, Python, PHP, etc.) and SQL.Solid understanding of programming fundamentals (data structures, algorithms).Strong analytical and problem-solving capabilities.Excellent verbal and written communication skills.A quick-learning ability to adapt to new technologies, work independently, and manage workload effectively.

Join Skroutz, where our mission is to deliver extraordinary experiences. Since our inception in 2005, we have believed that satisfied customers lead to satisfied merchants, driving us to understand and fulfill their needs while providing a seamless shopping journey.Our ambition is to transform into the Everyday App, the preferred platform for millions to meet their online shopping requirements. From the latest smartphone to essential pantry items, stylish outfits, or collectible gaming consoles, Skroutz is your reliable partner for effortless shopping.With aspirations that extend beyond Greece, we are on the path to becoming one of Europe's fastest-growing Marketplaces, with exciting ventures underway in Cyprus and the Balkans. Our commitment to customer satisfaction shapes every decision we make.We are looking for passionate individuals who thrive in the intersection of e-commerce and technology. If your drive is to create remarkable shopping experiences for users while enabling sellers globally to thrive, we want you on our team.At Skroutz, be a part of a transformative journey that redefines online shopping. Together, let’s turn everyday moments into exceptional experiences.Are you ready for the challenge?#AimToAmazeOur Engineering ValuesMaster your craft and take pride in your work.Deliver early and iterate based on feedback.Collaborate and be proactive within your team.Avoid over-engineering and focus on simplicity.Enjoy the process and celebrate achievements.Technologies We UseOur primary stack includes Ruby for backend development, utilizing the Ruby on Rails framework, alongside Javascript (ES6) and React/Redux for frontend. We leverage a MariaDB cluster for storage, with extensive use of Elasticsearch, Kafka, MongoDB, Redis, and Memcached. Jenkins is our go-to for CI, and we utilize tools like Sentry, DataDog, and Grafana for monitoring purposes. We consistently seek the most effective tools tailored to our needs. Discover more about our projects on our Engineering blog.Your Contribution to Skroutz's VisionWe are searching for Senior Backend Software Engineers with a robust technical background...

About Avis Greece Avis Greece is part of a global brand focused on reshaping how people move. The company develops integrated products and services that aim to make travel more flexible and convenient for customers worldwide. Why Work at Avis Greece? Supportive team culture: Colleagues work together to encourage new ideas and keep customer needs at the center of every decision. Purpose-driven work: Employees help shape the future of mobility, contributing to a more connected world. Rental Sales Agent – Athens Downtown The Athens Downtown team is looking for a Rental Sales Agent who will deliver excellent service, drive sales, and make the rental process smooth for every customer. Main Responsibilities Deliver friendly, reliable customer service for each car rental and build long-term relationships with clients. Promote relevant products and services to improve the customer experience. Monitor competitor offerings and market trends to help maintain competitive rates in line with company guidelines. Support daily station operations and suggest improvements for better results. Work with other departments to resolve customer issues and ensure high service standards. Location Athens, Attica, Greece