Senior Backend Developer

Join our team as a Senior Backend Engineer (Python) and engage in a challenging project that focuses on data-intensive processing, system integration, and semantic technologies. In this pivotal role, you will take charge of an established codebase, enhancing its stability and evolving it to meet the project’s demands. This position is perfect for seasoned engineers who thrive in working with complex systems and have a solid grasp of data-driven architectures.Key Responsibilities:Thoroughly analyze and take ownership of an existing Python-based backend.Refactor and optimize backend components with an emphasis on maintainability and performance.Develop and sustain data processing pipelines and integration workflows.Collaborate closely with data and semantic engineers on RDF/SPARQL-driven processes.Contribute to the architectural redesign and technical documentation.Assist with deployment, configuration, and troubleshooting tasks.Ensure high code quality through rigorous reviews, testing, and adherence to best practices.Requirements:A minimum of 3 years of professional experience in backend development.Expertise in Python programming.Experience with:Apache Airflow and AWS.Data-intensive or integration-heavy systems.APIs, batch processing, and backend services.Configuration-driven systems (XML / JSON / YAML).Strong understanding of:Software architecture and design patterns.Debugging and maintaining legacy codebases.Proven experience in complex, multi-stakeholder projects (experience in EU or public-sector projects is a plus).Preferred Qualifications:Familiarity with Semantic Web technologies (RDF, SPARQL, OWL).Experience in data modeling or knowledge-based systems.Exposure to DevOps practices (CI/CD, containerization).Experience in contributing to or maintaining technical documentation (e.g., AsciiDoc, Antora).Benefits:We value talent and commitment, offering the following perks:Attractive full-time salary.Private health insurance under the company’s group plan.Flexible working hours.Access to top-quality tools.Opportunities for professional development, including language courses and specialized training.Career advancement potential by collaborating with leading specialists in the field.A dynamic work environment that encourages personal and professional growth.If you're ready for an exciting challenge, we would love to hear from you!

Join Kaizen Gaming as a Senior Backend Engineer and be part of a dynamic Agile team dedicated to crafting innovative solutions for millions of users worldwide. Collaborate with cross-functional teams to drive impactful projects, from user-facing applications to robust backend services, ensuring high performance and reliability. Your expertise will guide the development of scalable systems, turning complex requirements into elegant technological solutions.

Join Kiefer Tech, a pioneering force in the technology sector, where we harness over 12 years of engineering expertise from the Green Energy domain to craft innovative AI, robotics, and enterprise solutions throughout Greece and the EU. Our mission is to construct sovereign AI infrastructure that upholds data privacy within EU borders while driving substantial business outcomes. We are committed to our values of innovation, quality, and sustainable partnerships with clients, which empower us to develop cutting-edge AI infrastructure, including the first authentic Greek Large Language Models and intelligent automation solutions that help organizations flourish.Collaborating with NVIDIA, we merge our sustainable infrastructure knowledge with top-tier AI technology, fostering an ecosystem that drives innovation and augments Greece’s technological independence. Join our team to help shape the AI-driven future.Technology Stack: Python (FastAPI) and TypeScript (Node.js) microservices deployed on Kubernetes, supported by PostgreSQL, Redis, and AWS.Role Overview: As a Senior Backend Engineer within the Sophea platform team, you will be pivotal in defining the architecture for enterprise-grade AI products. Your contributions will enhance system reliability and empower engineering teams to deploy faster and with greater confidence. You will enjoy significant technical autonomy, focusing on innovation rather than maintenance.

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...

Join our dynamic team as a Python Developer in Athens or work remotely from anywhere! Be a part of our expanding development teams engaged in groundbreaking projects that push the boundaries of technology.Your Role:As a Python Developer, you will be responsible for designing and implementing efficient solutions for big data processing. You will leverage technologies including Python, R, and Apache Spark on the Azure Cloud platform.

Join Our Journey at Welcome!Established in 2015 in Athens, Greece, Welcome is revolutionizing travel experiences by offering more than just a transfer service. We are pioneers in delivering a comprehensive and personalized journey for travelers from their arrival to their departure. Welcome Pickups caters to every travel need, providing seamless transfers, engaging sightseeing tours, and invaluable local insights in the most user-friendly and personalized manner. Our drivers are not just transporters; they are local experts who enhance travelers' experiences, making them feel at home no matter where they are. Our commitment to safety is paramount, featuring contactless rides, stringent cleaning protocols, and protective equipment for every journey.As a rapidly growing travel tech startup, Welcome is quickly establishing itself as a global leader in in-destination travel services.Rated 4.9/5 stars, we are among the highest-rated global transportation companies.We service over 300 destinations with plans to expand to 350 by 2024.Our network includes over 4,000 travel partners, including 2,500 hotels and numerous vacation rentals, welcoming over 50 new partners each month.We delight over 2.5 million travelers annually.⭐ Dive deeper into the culture of Welcome by visiting our TikTok account.⭐About Our TeamOur team is a vibrant mix of diverse individuals passionate about travel and dedicated to quality. Each member is committed to Welcome's vision and works tirelessly to achieve it. We think outside the box, prioritize design and usability, and strive to create unforgettable experiences. We are committed to continuous learning and personal and professional growth while maintaining a humble, 'pay it forward' mindset and ambitious goals.Role OverviewAs a Backend Software Engineer, you will play a pivotal role in transforming our vision into tangible products. Your contributions will directly impact the travel experience for users, drivers, and partners. You will be responsible for enhancing our tech infrastructure and optimizing the code that powers our production servers, ensuring a flawless user experience.In the past 18 months, our full-stack approach has yielded remarkable results. Our engineers focus primarily on back-end development, working on logic, APIs, and databases, while also having the capability to build functional UI using React.

The Sportsbook Area within Product Development is expanding rapidly, and we are on the lookout for a talented Backend Software Engineer to join our world-class Sportsbook team. Our platform, meticulously crafted in-house, is gaining traction not only in new markets but also as a B2B offering. With our product available globally, we provide around-the-clock support to enhance the experience for users betting on various sports.Our Product Development organization boasts a truly global presence, featuring cross-functional teams across five Tech Hubs: Malta, Budapest, Stockholm, Tallinn, and Athens. Life at Betsson Group is akin to a thrilling rollercoaster ride—fast-paced, full of unexpected turns, and always exhilarating. Our diverse team of over 2,800 colleagues from more than 75 nationalities collaborates daily to tackle new challenges and seize opportunities for growth. If you thrive in an innovative environment and enjoy pushing boundaries, you will find your place among us.As a vital member of our Sportsbook tech team—a high-performance group focused on delivering optimal functionality and user experience in the iGaming sector—you will play a key role in ensuring our platform meets the demands of our brands serving over 20 different markets. Join us in our mission to create unmatched performance and functionality in the industry!

Join AbZorba Games, a leading studio within Greentube and NOVOMATIC Interactive, renowned for crafting exceptional social casino games. As we enhance and expand our mobile casino application, 'Diamond Cash Slots', we are on the lookout for a talented Senior Back-End Software Engineer to enrich our dynamic development team.In this role, you will be the architect of the core mechanics behind our slot games and the underlying server-side logic that shapes player experiences. Your key responsibilities will include designing, developing, and maintaining robust back-end systems that support our array of slot titles. This encompasses everything from implementing core game features to ensuring our game servers' integrity and performance. Collaborating with game designers, front-end developers, and product stakeholders, you will help breathe life into innovative slot games and features.The ideal candidate will be enthusiastic, team-oriented, and possess a solid grasp of Game Dynamics.Note: This position is fully remote but will require occasional travel to our Athens office every few months for team meetings and workshops. Therefore, preference will be given to candidates residing in Greece.

Role overview tgndata is hiring a Data Engineer in Athens, Attica. This hybrid role focuses on building and maintaining the data infrastructure that supports the company’s analytics and decision-making. What you will do Design, develop, and maintain data pipelines Work closely with teams to ensure reliable data flows for analytics and reporting Use Python to create scalable and efficient solutions for extracting insights from company data Location This position is based in Athens, Greece, with a hybrid work arrangement.

At Skroutz, we are driven by a straightforward mission: to amaze our customers. Since our inception in 2005, we've believed that satisfied customers lead to satisfied merchants. Our goal is to understand and anticipate customer needs, providing them with an unparalleled and worry-free shopping experience.Our vision is ambitious: we strive to be the Everyday App, the ultimate platform where millions can satisfy their online shopping desires. Whether you’re in search of the latest smartphone, replenishing pantry staples, finding the ideal outfit for an occasion, or hunting down that elusive gaming console, Skroutz is your reliable partner for effortless shopping.Our aspirations extend well beyond Greece. We are on track to become one of Europe’s fastest-growing marketplaces, with exciting expansions already taking place in Cyprus and the Balkans. Our unwavering commitment to customer satisfaction drives every decision we make.To fulfill our vision, we are in search of individuals who share our enthusiasm for e-commerce and technology. If you are motivated by the desire to create extraordinary shopping experiences for our users and assist sellers worldwide in growing their businesses, we would love to have you on our team.Join us at Skroutz and be part of a transformative journey that is redefining online shopping. Together, let’s turn everyday moments into extraordinary experiences.Are you ready to embark on this challenge?#AimToAmazeOur Engineering ValuesMaster Your Craft: Develop and refine your technical skills, and take pride in your work.Release Early & Iterate: Launch prototypes swiftly to gather critical feedback and refine based on insights. Don’t hesitate to make adjustments and revisit to enhance.Be a Team Player: Offer assistance, listen, and seek to comprehend. Take initiative and be proactive.Avoid Over-Engineering: Steer clear of unnecessary complexity or regulation.Enjoy Your Work: Celebrate achievements along the way.Technologies We UseOur primary tech stack includes Ruby for backend development, utilizing the Ruby on Rails framework, along with JavaScript (ES6) and React/Redux for frontend development. We operate on a MariaDB cluster for storage and utilize Elasticsearch, Kafka, MongoDB, Redis, and Memcached extensively. Jenkins is employed for CI, while tools like Sentry, DataDog, and Grafana are used for monitoring. We strive to select the best tools available to meet our needs. To learn more about our projects, visit our Engineering blog.Your Contribution to Skroutz's Vision

Join the dynamic team at Finartix as a Senior Software Engineer specializing in .NET technologies. We are seeking a motivated and talented Backend Application Developer to contribute to our Software Engineering Practice. You will play an essential role in designing, implementing, and managing innovative technology-driven solutions that enhance our clients’ operational efficiency across various sectors. Key ResponsibilitiesEngage in the complete software development lifecycle including designing, testing, and maintaining bespoke applications.Adhere to established programming standards for naming conventions, security, performance, and ensure comprehensive code documentation.Act as a trusted technical advisor to clients, offering solutions tailored to their needs.Provide ongoing support to both business and IT users for existing applications.

Join Kaizen GamingAt Kaizen Gaming, the driving force behind Betano, we are proud to be one of the leading GameTech companies globally, with operations spanning 20 diverse markets. Our commitment lies in leveraging state-of-the-art technology to deliver unparalleled experiences for millions of customers who rely on us for their entertainment.Our vibrant team consists of over 2,700 talented individuals from more than 40 nationalities across three continents.Recognized as one of the Best Workplaces in Europe and certified as a Great Place to Work in all our offices, we guarantee that no two days will ever be the same. Are you ready to Press Play on Your Potential?About the RoleAs a Backend Engineer, you will be an integral part of an autonomous Agile team, collaborating closely with the Product Owner, Agile Delivery Lead, Automation Testers, and fellow Software Engineers to create a competitive edge for Kaizen and provide an exceptional online experience for our customers.At Kaizen, our software engineers are entrusted with a variety of projects, ranging from customer-facing websites and mobile applications to internal tools and backend services, all designed to handle high traffic and volume.Your ResponsibilitiesDevelop innovative solutions from the ground up, guiding them from concept to production.Transform requirements into efficient and sophisticated technological systems, leveraging our large-scale, highly available infrastructure.Design, build, and maintain efficient, reusable, and reliable code.Explore new technologies to identify effective solutions for everyday challenges.Deliver high-value features rapidly.Question the status quo and drive improvements for both the team and the product.Technology StackOur platforms primarily utilize C# / ASP.NET, with new services developed in .NET Core. Contemporary applications employ Vue.js for the frontend, while legacy systems utilize server-rendered (Razor) views combined with jQuery and Knockout.js. We predominantly rely on MS SQL Server for data storage, supplemented by Redis and ElasticSearch when applicable. RabbitMQ serves as our primary message broker, and we use GitLab for code versioning and continuous integration, alongside the Atlassian suite for issue tracking and documentation.

Welcome to Kaizen Gaming!At Kaizen Gaming, the driving force behind Betano, we are proud to be one of the leading GameTech companies globally, actively operating in 19 diverse markets. Our mission is to harness cutting-edge technology to deliver exceptional experiences to millions of customers who rely on us for their entertainment needs.Our vibrant team consists of over 2,700 Kaizeners from more than 40 nationalities, spread across three continents.As a recognized Best Workplace in Europe and a certified Great Place to Work, we promise that no two days will be the same. Are you ready to Press Play on your potential?About the Role:As the Lead Software Engineer, you will be instrumental in guiding a talented team of software engineers in crafting and delivering top-tier software products. Your leadership will involve overseeing project execution, mentoring team members, and ensuring adherence to engineering best practices. This role seamlessly combines technical acumen with leadership and communication skills to drive both team and organizational success.

Satori Analytics delivers data and AI solutions for clients in sectors such as fintech, airlines, FMCG, retail, manufacturing, and financial services. The company’s team of over 100 specialists, including Data Engineers and Data Scientists, supports the entire data lifecycle, from ingestion to AI-powered applications. Projects range from building cloud infrastructure to developing predictive analytics tools. Role overview This Python Software Developer position is based in Athens, Attica, Greece. The role centers on building backend services, APIs, and data-driven software that support Satori’s analytics products. As part of a growing team, the developer will help create scalable, reliable solutions for clients across South-Eastern Europe and beyond. What you will do Design and implement Python applications: Build APIs and microservices that are clean, well-tested, and scalable. Develop and maintain data pipelines: Create reliable data ingestion and processing systems that are observable and easy to support. Collaborate with specialists: Work closely with Data Scientists, Data Engineers, AI Engineers, and domain experts to turn analytical needs into practical software. Focus on quality delivery: Use Git, CI/CD, code reviews, testing, and documentation to support fast, maintainable releases. Translate business needs: Break down real-world problems into actionable technical solutions, balancing speed, quality, and long-term scalability. Improve engineering practices: Help raise the standard of software development across the team. Location Athens, Attica, Greece

Are you excited about the power of Artificial Intelligence? At Satori Analytics, we are dedicated to transforming industries through innovative Data & AI solutions. Our mission is to empower global brands by providing unparalleled clarity and insights, utilizing cutting-edge technologies. Our diverse range of services spans from developing cloud-based ecosystems for fintech to creating predictive models for the airline industry, covering the entire data lifecycle—from data ingestion to AI implementation.As a rapidly expanding scale-up, our talented team of over 100 professionals—including Data Engineers, Data Scientists, and other tech experts—delivers pioneering analytics solutions for various sectors, including FMCG, retail, manufacturing, and financial services. Join us as we spearhead the data revolution in South-Eastern Europe and beyond!Ready to collaborate with one of Greece's largest energy companies?Your Daily Responsibilities:Design, construct, and maintain backend services that address real-world business challenges, guiding projects from concept to production.Engage in the complete software development lifecycle—from gathering requirements to deploying and managing systems in a live environment.Monitor, diagnose, and enhance production systems and cloud infrastructure utilizing observability tools.Work closely with product teams and stakeholders to translate business requirements into precise, actionable technical solutions.

Elevate your career with us! Join our dynamic development teams in Athens or work remotely as a Data Engineer. In this vital role within our agile team, you will help design and implement cutting-edge big data solutions on a scalable cloud platform. You will analyze millions of real-time data points to extract advanced insights and enhance analytics capabilities for our end users.Your Responsibilities: Develop and implement batch processing pipelines utilizing Spark (Python or Scala) and SQL; Design and execute streaming ETL/ELT processes from a variety of data sources; Write and maintain code for developing comprehensive big data solutions, focusing on data integration and analytics use cases; Create and implement APIs using contemporary Python frameworks; Collaborate effectively with our Business Analysis teams to align technical solutions with business needs; Conduct end-to-end and functional testing using open-source tools; Set up monitoring solutions for our data platform, including alerts and dashboards. Essential Qualifications: Bachelor’s degree in Computer Science or Software Engineering; Extensive knowledge of Apache Spark; Proficient in Python and database management; Previous experience as a Data Engineer; Familiarity with Azure Data Lake Storage and Delta Live Tables; Fluency in English, both written and spoken; Strong analytical skills and a team-oriented mindset; A passion for learning and professional growth in data engineering. Preferred Qualifications: Experience with Databricks; Proficiency in API development with FastAPI; Familiarity with cloud platforms (AWS, Azure, GCP, etc.); Experience with Docker. Why Join Us?We value talent and commitment, offering a range of benefits for our team members, including:Competitive full-time salary;Comprehensive private health coverage under the company’s group program;Flexible working hours;Access to state-of-the-art tools;Opportunities for professional development including language courses and specialized training;Career advancement opportunities with industry-leading specialists;A dynamic work environment that encourages personal and professional growth through challenging goals and mentorship.If you're ready to embrace an exciting challenge, work with cutting-edge technologies, and enjoy your daily tasks, we invite you to apply! Please submit your detailed CV in English, referencing: (SDE/02/26).Explore all our open vacancies by visiting the career section of our website.

Join the dynamic team at FINARTIX as a passionate Backend Application Developer. Contribute to innovative projects across various sectors, playing a vital role in developing, implementing, and managing technology-driven business solutions that enhance our clients' delivery approaches. Key Responsibilities Engage in the complete software development lifecycle, including the implementation, testing, and maintenance of custom applications. Adhere to established standards for programming, security, and performance while ensuring thorough code documentation. Act as a technical consultant to clients, providing expert advice and support. Assist both business and IT users with existing applications to ensure optimal performance. QualificationsBachelor's or Master's degree in Computer Science, Engineering, or a related field is required.A minimum of 3 years of experience in Software Engineering.Strong proficiency in Backend Engineering with the .Net Framework.Hands-on experience with various database technologies, including SQL, NoSQL, and Vector.Familiarity with Web Services (SOAP/REST) and Application Servers (IIS).Understanding of system frameworks such as Git and Azure DevOps (ADO), as well as container technologies like Docker or Kubernetes.Previous experience in Infrastructure Architecture and support is a plus.Cloud Services certification (AWS, Azure, GCP) is an added advantage.Exceptional programming skills and a creative approach to problem-solving.Excellent communication and time management skills.Proficient in both English and Greek, with strong written and verbal capabilities.BenefitsProfessional development through engaging, real-world projects across diverse industries.Work within a rapidly-growing technology company with esteemed partners.Opportunity to collaborate with talented colleagues in a diverse environment.Competitive salary package.Comprehensive private health insurance.Access to training and development opportunities.Company laptop provided.Flexible work environment.

Are you a skilled Azure DevSecOps Engineer with a strong background in Git, Infrastructure as Code (IaC), and automation tool development? Join our dynamic team in Athens or work remotely to contribute to significant international IT projects.Your Responsibilities: Design, implement, and oversee secure CI/CD pipelines utilizing Azure DevOps or Jenkins; Develop and enhance IaC solutions using Bicep and/or Terraform; Automate the provisioning, configuration, and deployment of infrastructure across Development, Testing, and Production environments; Help shape our DevSecOps strategy, ensuring secure, scalable, and reliable delivery processes. Essential Qualifications: Proven experience with Azure Cloud services; Expertise in Terraform and/or Bicep for Infrastructure as Code; Solid experience with CI/CD tools; Proficient in scripting languages such as Bash, Python, or similar; Strong understanding of Git workflows and branching strategies; Fluent in both written and spoken English. Preferred Qualifications: Familiarity with Jenkins in addition to Azure DevOps; Knowledge of Azure IaaS, PaaS, and SaaS services; Experience with monitoring, logging, and alerting in cloud environments. Benefits:We value talent and commitment. Here’s what you can look forward to as part of our team:Competitive full-time salary;Private Health Coverage through the Company’s group program;Flexible Working Hours;Access to top-tier tools;Professional Development opportunities: language courses, specialized training, and continuous learning;Career Growth: collaborate with some of the industry's most innovative specialists;A dynamic work environment that promotes challenging goals, autonomy, and mentorship for both personal and company growth.If you’re ready for an exciting challenge and want to work with cutting-edge technologies while enjoying your role, we invite you to apply! Submit your detailed CV in English, referencing: (JDEN/02/26).Explore our other open vacancies by visiting our career section at www.eurodyn.com and follow us on Twitter (@EURODYN_Careers) and LinkedIn.European Dynamics (ED) (www.eurodyn.com) is a prominent European company specializing in Software, Information, and Communication Technologies, with an international footprint.

Ready to Make a Difference? Join MORO TECH!MORO TECH is a cutting-edge technology firm with a diverse, global team dedicated to empowering businesses through transformative solutions, data-driven strategies, and exceptional technical expertise.Envision yourself as part of a team that collaborates with one of the world's largest OEMs, influencing the future of the smart mobility industry. Here, your innovative ideas are not just welcomed; they are crucial to our mission!We value creativity, diverse perspectives, and an inclusive atmosphere where every contribution matters. If you're passionate about meaningful work and eager to grow in a dynamic environment, we want to hear from you!Role Impact:As a QA Automation Engineer, you will collaborate with Software Engineers and Product Owners within a cross-functional team to deliver pioneering solutions in the smart mobility ecosystem.Daily Responsibilities:Lead the software testing lifecycle, ensuring effective test plan design and providing timely feedback on requirements and technical documents.Conduct manual testing for new features and bug fixes.Coordinate and execute integration testing with clients and third-party teams.Contribute to designing, developing, and maintaining advanced automated test suites for mobile applications.Work closely with Development teams, QA members, and the Delivery Manager to ensure high-quality deliverables.Collaborate with Business Analysts and Product Owners to define structured and testable user stories.Engage in test management activities including test execution, reporting, and tracking.Drive continuous improvement by exploring and recommending new technologies.